Replace uses of ObjectReflectDiff with cmp.Diff

ObjectReflectDiff is already a shim over cmp.Diff, so no actual output
or behavior changes

cmd/kube-controller-manager/app/options/options_test.go

@@ -23,11 +23,11 @@ import (
 	"testing"
 	"time"
 
+	"github.com/google/go-cmp/cmp"
 	"github.com/spf13/pflag"
 
 	eventv1 "k8s.io/api/events/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/apimachinery/pkg/util/diff"
 	utilerrors "k8s.io/apimachinery/pkg/util/errors"
 	apiserveroptions "k8s.io/apiserver/pkg/server/options"
 	cpconfig "k8s.io/cloud-provider/config"
@@ -441,7 +441,7 @@ func TestAddFlags(t *testing.T) {
 	sort.Sort(sortedGCIgnoredResources(expected.GarbageCollectorController.GCIgnoredResources))
 
 	if !reflect.DeepEqual(expected, s) {
-		t.Errorf("Got different run options than expected.\nDifference detected on:\n%s", diff.ObjectReflectDiff(expected, s))
+		t.Errorf("Got different run options than expected.\nDifference detected on:\n%s", cmp.Diff(expected, s))
 	}
 }
 
@@ -640,7 +640,7 @@ func TestApplyTo(t *testing.T) {
 	s.ApplyTo(c)
 
 	if !reflect.DeepEqual(expected.ComponentConfig, c.ComponentConfig) {
-		t.Errorf("Got different configuration than expected.\nDifference detected on:\n%s", diff.ObjectReflectDiff(expected.ComponentConfig, c.ComponentConfig))
+		t.Errorf("Got different configuration than expected.\nDifference detected on:\n%s", cmp.Diff(expected.ComponentConfig, c.ComponentConfig))
 	}
 }
 

cmd/kubelet/app/options/options_test.go

@@ -21,9 +21,9 @@ import (
 	"reflect"
 	"testing"
 
+	"github.com/google/go-cmp/cmp"
 	"github.com/spf13/pflag"
 
-	"k8s.io/apimachinery/pkg/util/diff"
 	cliflag "k8s.io/component-base/cli/flag"
 	"k8s.io/kubernetes/pkg/kubelet/config"
 )
@@ -101,7 +101,7 @@ func TestRoundTrip(t *testing.T) {
 			continue
 		}
 		if !reflect.DeepEqual(modifiedFlags, outputFlags) {
-			t.Errorf("%s: flags did not round trip: %s", testCase.name, diff.ObjectReflectDiff(modifiedFlags, outputFlags))
+			t.Errorf("%s: flags did not round trip: %s", testCase.name, cmp.Diff(modifiedFlags, outputFlags))
 			continue
 		}
 	}

pkg/api/pod/util_test.go

@@ -27,7 +27,6 @@ import (
 	v1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/resource"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/util/sets"
 	"k8s.io/apimachinery/pkg/util/validation/field"
 	utilfeature "k8s.io/apiserver/pkg/util/feature"
@@ -2382,14 +2381,14 @@ func TestDropInPlacePodVerticalScaling(t *testing.T) {
 
 					// old pod should never be changed
 					if !reflect.DeepEqual(oldPod, oldPodInfo.pod()) {
-						t.Errorf("old pod changed: %v", diff.ObjectReflectDiff(oldPod, oldPodInfo.pod()))
+						t.Errorf("old pod changed: %v", cmp.Diff(oldPod, oldPodInfo.pod()))
 					}
 
 					switch {
 					case enabled || oldPodHasInPlaceVerticalScaling:
 						// new pod shouldn't change if feature enabled or if old pod has ResizePolicy set
 						if !reflect.DeepEqual(newPod, newPodInfo.pod()) {
-							t.Errorf("new pod changed: %v", diff.ObjectReflectDiff(newPod, newPodInfo.pod()))
+							t.Errorf("new pod changed: %v", cmp.Diff(newPod, newPodInfo.pod()))
 						}
 					case newPodHasInPlaceVerticalScaling:
 						// new pod should be changed
@@ -2398,12 +2397,12 @@ func TestDropInPlacePodVerticalScaling(t *testing.T) {
 						}
 						// new pod should not have ResizePolicy
 						if !reflect.DeepEqual(newPod, podWithoutInPlaceVerticalScaling()) {
-							t.Errorf("new pod has ResizePolicy: %v", diff.ObjectReflectDiff(newPod, podWithoutInPlaceVerticalScaling()))
+							t.Errorf("new pod has ResizePolicy: %v", cmp.Diff(newPod, podWithoutInPlaceVerticalScaling()))
 						}
 					default:
 						// new pod should not need to be changed
 						if !reflect.DeepEqual(newPod, newPodInfo.pod()) {
-							t.Errorf("new pod changed: %v", diff.ObjectReflectDiff(newPod, newPodInfo.pod()))
+							t.Errorf("new pod changed: %v", cmp.Diff(newPod, newPodInfo.pod()))
 						}
 					}
 				})

pkg/apis/core/v1/defaults_test.go

@@ -28,7 +28,6 @@ import (
 	"k8s.io/apimachinery/pkg/api/resource"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/util/intstr"
 	utilfeature "k8s.io/apiserver/pkg/util/feature"
 	featuregatetesting "k8s.io/component-base/featuregate/testing"
@@ -181,7 +180,7 @@ func testWorkloadDefaults(t *testing.T, featuresEnabled bool) {
 	defaults := detectDefaults(t, rc, reflect.ValueOf(template))
 	if !reflect.DeepEqual(expectedDefaults, defaults) {
 		t.Errorf("Defaults for PodTemplateSpec changed. This can cause spurious rollouts of workloads on API server upgrade.")
-		t.Logf(diff.ObjectReflectDiff(expectedDefaults, defaults))
+		t.Logf(cmp.Diff(expectedDefaults, defaults))
 	}
 }
 
@@ -327,7 +326,7 @@ func testPodDefaults(t *testing.T, featuresEnabled bool) {
 	defaults := detectDefaults(t, pod, reflect.ValueOf(pod))
 	if !reflect.DeepEqual(expectedDefaults, defaults) {
 		t.Errorf("Defaults for PodSpec changed. This can cause spurious restarts of containers on API server upgrade.")
-		t.Logf(diff.ObjectReflectDiff(expectedDefaults, defaults))
+		t.Logf(cmp.Diff(expectedDefaults, defaults))
 	}
 }
 

pkg/controller/endpoint/endpoints_controller_test.go

@@ -26,11 +26,11 @@ import (
 	"testing"
 	"time"
 
+	"github.com/google/go-cmp/cmp"
 	v1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/util/intstr"
 	"k8s.io/apimachinery/pkg/util/wait"
 	"k8s.io/client-go/informers"
@@ -1070,7 +1070,7 @@ func TestSyncEndpointsHeadlessService(t *testing.T) {
 		}},
 	})
 	if !reflect.DeepEqual(originalService, service) {
-		t.Fatalf("syncing endpoints changed service: %s", diff.ObjectReflectDiff(service, originalService))
+		t.Fatalf("syncing endpoints changed service: %s", cmp.Diff(service, originalService))
 	}
 	endpointsHandler.ValidateRequestCount(t, 1)
 	endpointsHandler.ValidateRequest(t, "/api/v1/namespaces/"+ns+"/endpoints/foo", "PUT", &data)

pkg/controlplane/controller/clusterauthenticationtrust/cluster_authentication_trust_controller_test.go

@@ -21,13 +21,13 @@ import (
 	"testing"
 
 	"github.com/davecgh/go-spew/spew"
+	"github.com/google/go-cmp/cmp"
 
 	corev1 "k8s.io/api/core/v1"
 	apierrors "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/util/validation/field"
 	"k8s.io/apiserver/pkg/authentication/request/headerrequest"
 	"k8s.io/apiserver/pkg/server/dynamiccertificates"
@@ -298,7 +298,7 @@ func TestWriteClientCAs(t *testing.T) {
 
 			actualConfigMaps, updated := getFinalConfigMaps(t, client)
 			if !reflect.DeepEqual(test.expectedConfigMaps, actualConfigMaps) {
-				t.Fatalf("%s: %v", test.name, diff.ObjectReflectDiff(test.expectedConfigMaps, actualConfigMaps))
+				t.Fatalf("%s: %v", test.name, cmp.Diff(test.expectedConfigMaps, actualConfigMaps))
 			}
 			if test.expectCreate != updated {
 				t.Fatalf("%s: expected %v, got %v", test.name, test.expectCreate, updated)

pkg/generated/openapi/openapi_test.go

@@ -21,7 +21,7 @@ import (
 	"reflect"
 	"testing"
 
-	"k8s.io/apimachinery/pkg/util/diff"
+	"github.com/google/go-cmp/cmp"
 	"k8s.io/kube-openapi/pkg/common"
 	"k8s.io/kube-openapi/pkg/handler"
 	"k8s.io/kube-openapi/pkg/validation/spec"
@@ -52,7 +52,7 @@ func TestOpenAPIRoundtrip(t *testing.T) {
 			delete(value.Schema.Extensions, common.ExtensionV2Schema)
 
 			if !reflect.DeepEqual(value.Schema, roundTripped) {
-				t.Errorf("unexpected diff (a=expected,b=roundtripped):\n%s", diff.ObjectReflectDiff(value.Schema, roundTripped))
+				t.Errorf("unexpected diff (a=expected,b=roundtripped):\n%s", cmp.Diff(value.Schema, roundTripped))
 				return
 			}
 		})

pkg/kubelet/cloudresource/cloud_request_manager_test.go

@@ -22,8 +22,8 @@ import (
 	"testing"
 	"time"
 
-	"k8s.io/api/core/v1"
+	"github.com/google/go-cmp/cmp"
-	"k8s.io/apimachinery/pkg/util/diff"
+	v1 "k8s.io/api/core/v1"
 	"k8s.io/cloud-provider/fake"
 )
 
@@ -54,7 +54,7 @@ func TestNodeAddressesDelay(t *testing.T) {
 		t.Errorf("Unexpected err: %q\n", err)
 	}
 	if !reflect.DeepEqual(nodeAddresses, cloud.Addresses) {
-		t.Errorf("Unexpected diff of node addresses: %v", diff.ObjectReflectDiff(nodeAddresses, cloud.Addresses))
+		t.Errorf("Unexpected diff of node addresses: %v", cmp.Diff(nodeAddresses, cloud.Addresses))
 	}
 
 	// Change the IP address
@@ -140,7 +140,7 @@ func TestNodeAddressesUsesLastSuccess(t *testing.T) {
 				t.Errorf("unexpected err: %v", err)
 			}
 			if got, want := nodeAddresses, test.wantAddrs; !reflect.DeepEqual(got, want) {
-				t.Errorf("Unexpected diff of node addresses: %v", diff.ObjectReflectDiff(got, want))
+				t.Errorf("Unexpected diff of node addresses: %v", cmp.Diff(got, want))
 			}
 		})
 	}

pkg/kubelet/kubelet_pods_test.go

@@ -40,7 +40,6 @@ import (
 	"k8s.io/apimachinery/pkg/labels"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/types"
-	"k8s.io/apimachinery/pkg/util/diff"
 	utilfeature "k8s.io/apiserver/pkg/util/feature"
 	core "k8s.io/client-go/testing"
 	"k8s.io/client-go/tools/record"
@@ -3273,7 +3272,7 @@ func Test_generateAPIPodStatus(t *testing.T) {
 					expected.Conditions = append([]v1.PodCondition{test.expectedPodDisruptionCondition}, expected.Conditions...)
 				}
 				if !apiequality.Semantic.DeepEqual(*expected, actual) {
-					t.Fatalf("Unexpected status: %s", diff.ObjectReflectDiff(*expected, actual))
+					t.Fatalf("Unexpected status: %s", cmp.Diff(*expected, actual))
 				}
 			})
 		}

pkg/kubelet/status/status_manager_test.go

@@ -35,7 +35,6 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
-	"k8s.io/apimachinery/pkg/util/diff"
 	utilfeature "k8s.io/apiserver/pkg/util/feature"
 	clientset "k8s.io/client-go/kubernetes"
 	"k8s.io/client-go/kubernetes/fake"
@@ -613,7 +612,7 @@ func TestTerminatePod(t *testing.T) {
 
 	expectUnknownState := v1.ContainerState{Terminated: &v1.ContainerStateTerminated{Reason: "ContainerStatusUnknown", Message: "The container could not be located when the pod was terminated", ExitCode: 137}}
 	if !reflect.DeepEqual(newStatus.InitContainerStatuses[0].State, expectUnknownState) {
-		t.Errorf("terminated container state not defaulted: %s", diff.ObjectReflectDiff(newStatus.InitContainerStatuses[0].State, expectUnknownState))
+		t.Errorf("terminated container state not defaulted: %s", cmp.Diff(newStatus.InitContainerStatuses[0].State, expectUnknownState))
 	}
 	if !reflect.DeepEqual(newStatus.InitContainerStatuses[1].State, firstStatus.InitContainerStatuses[1].State) {
 		t.Errorf("existing terminated container state not preserved: %#v", newStatus.ContainerStatuses)
@@ -622,7 +621,7 @@ func TestTerminatePod(t *testing.T) {
 		t.Errorf("existing terminated container state not preserved: %#v", newStatus.ContainerStatuses)
 	}
 	if !reflect.DeepEqual(newStatus.ContainerStatuses[0].State, expectUnknownState) {
-		t.Errorf("terminated container state not defaulted: %s", diff.ObjectReflectDiff(newStatus.ContainerStatuses[0].State, expectUnknownState))
+		t.Errorf("terminated container state not defaulted: %s", cmp.Diff(newStatus.ContainerStatuses[0].State, expectUnknownState))
 	}
 	if !reflect.DeepEqual(newStatus.ContainerStatuses[1].State, firstStatus.ContainerStatuses[1].State) {
 		t.Errorf("existing terminated container state not preserved: %#v", newStatus.ContainerStatuses)
@@ -674,22 +673,22 @@ func TestTerminatePodWaiting(t *testing.T) {
 
 	expectUnknownState := v1.ContainerState{Terminated: &v1.ContainerStateTerminated{Reason: "ContainerStatusUnknown", Message: "The container could not be located when the pod was terminated", ExitCode: 137}}
 	if !reflect.DeepEqual(newStatus.InitContainerStatuses[0].State, expectUnknownState) {
-		t.Errorf("terminated container state not defaulted: %s", diff.ObjectReflectDiff(newStatus.InitContainerStatuses[0].State, expectUnknownState))
+		t.Errorf("terminated container state not defaulted: %s", cmp.Diff(newStatus.InitContainerStatuses[0].State, expectUnknownState))
 	}
 	if !reflect.DeepEqual(newStatus.InitContainerStatuses[1].State, firstStatus.InitContainerStatuses[1].State) {
 		t.Errorf("existing terminated container state not preserved: %#v", newStatus.ContainerStatuses)
 	}
 	if !reflect.DeepEqual(newStatus.InitContainerStatuses[2].State, firstStatus.InitContainerStatuses[2].State) {
-		t.Errorf("waiting container state not defaulted: %s", diff.ObjectReflectDiff(newStatus.InitContainerStatuses[2].State, firstStatus.InitContainerStatuses[2].State))
+		t.Errorf("waiting container state not defaulted: %s", cmp.Diff(newStatus.InitContainerStatuses[2].State, firstStatus.InitContainerStatuses[2].State))
 	}
 	if !reflect.DeepEqual(newStatus.ContainerStatuses[0].State, expectUnknownState) {
-		t.Errorf("terminated container state not defaulted: %s", diff.ObjectReflectDiff(newStatus.ContainerStatuses[0].State, expectUnknownState))
+		t.Errorf("terminated container state not defaulted: %s", cmp.Diff(newStatus.ContainerStatuses[0].State, expectUnknownState))
 	}
 	if !reflect.DeepEqual(newStatus.ContainerStatuses[1].State, firstStatus.ContainerStatuses[1].State) {
 		t.Errorf("existing terminated container state not preserved: %#v", newStatus.ContainerStatuses)
 	}
 	if !reflect.DeepEqual(newStatus.ContainerStatuses[2].State, expectUnknownState) {
-		t.Errorf("waiting container state not defaulted: %s", diff.ObjectReflectDiff(newStatus.ContainerStatuses[2].State, expectUnknownState))
+		t.Errorf("waiting container state not defaulted: %s", cmp.Diff(newStatus.ContainerStatuses[2].State, expectUnknownState))
 	}
 
 	t.Logf("we expect the previous status update to be preserved.")

pkg/printers/internalversion/printers_test.go

@@ -24,10 +24,10 @@ import (
 	"testing"
 	"time"
 
+	"github.com/google/go-cmp/cmp"
 	"k8s.io/apimachinery/pkg/api/resource"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime/schema"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/util/intstr"
 	"k8s.io/client-go/util/certificate/csr"
 	"k8s.io/kubernetes/pkg/apis/admissionregistration"
@@ -293,7 +293,7 @@ func TestPrintEvent(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -394,7 +394,7 @@ func TestPrintNamespace(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -442,7 +442,7 @@ func TestPrintSecret(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -490,7 +490,7 @@ func TestPrintServiceAccount(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -590,7 +590,7 @@ func TestPrintNodeStatus(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -639,7 +639,7 @@ func TestPrintNodeRole(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -691,7 +691,7 @@ func TestPrintNodeOSImage(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -743,7 +743,7 @@ func TestPrintNodeKernelVersion(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -795,7 +795,7 @@ func TestPrintNodeContainerRuntimeVersion(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -832,7 +832,7 @@ func TestPrintNodeName(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -893,7 +893,7 @@ func TestPrintNodeExternalIP(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -955,7 +955,7 @@ func TestPrintNodeInternalIP(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -998,7 +998,7 @@ func TestPrintIngress(t *testing.T) {
 	}
 	rows[0].Object.Object = nil
 	if !reflect.DeepEqual(expected, rows) {
-		t.Errorf("mismatch: %s", diff.ObjectReflectDiff(expected, rows))
+		t.Errorf("mismatch: %s", cmp.Diff(expected, rows))
 	}
 }
 
@@ -1061,7 +1061,7 @@ func TestPrintIngressClass(t *testing.T) {
 				rows[i].Object.Object = nil
 			}
 			if !reflect.DeepEqual(testCase.expected, rows) {
-				t.Errorf("mismatch: %s", diff.ObjectReflectDiff(testCase.expected, rows))
+				t.Errorf("mismatch: %s", cmp.Diff(testCase.expected, rows))
 			}
 		})
 	}
@@ -1171,7 +1171,7 @@ func TestPrintServiceLoadBalancer(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -1531,7 +1531,7 @@ func TestPrintPod(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expect, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expect, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expect, rows))
 		}
 	}
 }
@@ -1655,7 +1655,7 @@ func TestPrintPodwide(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expect, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expect, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expect, rows))
 		}
 	}
 }
@@ -1737,7 +1737,7 @@ func TestPrintPodConditions(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expect, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expect, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expect, rows))
 		}
 	}
 }
@@ -1788,7 +1788,7 @@ func TestPrintPodList(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expect, rows) {
-			t.Errorf("mismatch: %s", diff.ObjectReflectDiff(test.expect, rows))
+			t.Errorf("mismatch: %s", cmp.Diff(test.expect, rows))
 		}
 	}
 }
@@ -1899,7 +1899,7 @@ func TestPrintNonTerminatedPod(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expect, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expect, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expect, rows))
 		}
 	}
 }
@@ -1981,7 +1981,7 @@ func TestPrintPodTemplate(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -2031,7 +2031,7 @@ func TestPrintPodTemplateList(t *testing.T) {
 		rows[i].Object.Object = nil
 	}
 	if !reflect.DeepEqual(expectedRows, rows) {
-		t.Errorf("mismatch: %s", diff.ObjectReflectDiff(expectedRows, rows))
+		t.Errorf("mismatch: %s", cmp.Diff(expectedRows, rows))
 	}
 }
 
@@ -2148,7 +2148,7 @@ func TestPrintDeployment(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -2216,7 +2216,7 @@ func TestPrintDaemonSet(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -2288,7 +2288,7 @@ func TestPrintDaemonSetList(t *testing.T) {
 		rows[i].Object.Object = nil
 	}
 	if !reflect.DeepEqual(expectedRows, rows) {
-		t.Errorf("mismatch: %s", diff.ObjectReflectDiff(expectedRows, rows))
+		t.Errorf("mismatch: %s", cmp.Diff(expectedRows, rows))
 	}
 }
 
@@ -2437,7 +2437,7 @@ func TestPrintJob(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -2518,7 +2518,7 @@ func TestPrintJobList(t *testing.T) {
 		rows[i].Object.Object = nil
 	}
 	if !reflect.DeepEqual(expectedRows, rows) {
-		t.Errorf("mismatch: %s", diff.ObjectReflectDiff(expectedRows, rows))
+		t.Errorf("mismatch: %s", cmp.Diff(expectedRows, rows))
 	}
 }
 
@@ -3290,7 +3290,7 @@ func TestPrintHPA(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -3490,7 +3490,7 @@ func TestPrintService(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -3541,7 +3541,7 @@ func TestPrintServiceList(t *testing.T) {
 		rows[i].Object.Object = nil
 	}
 	if !reflect.DeepEqual(expectedRows, rows) {
-		t.Errorf("mismatch: %s", diff.ObjectReflectDiff(expectedRows, rows))
+		t.Errorf("mismatch: %s", cmp.Diff(expectedRows, rows))
 	}
 }
 
@@ -3598,7 +3598,7 @@ func TestPrintPodDisruptionBudget(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -3652,7 +3652,7 @@ func TestPrintPodDisruptionBudgetList(t *testing.T) {
 		rows[i].Object.Object = nil
 	}
 	if !reflect.DeepEqual(expectedRows, rows) {
-		t.Errorf("mismatch: %s", diff.ObjectReflectDiff(expectedRows, rows))
+		t.Errorf("mismatch: %s", cmp.Diff(expectedRows, rows))
 	}
 }
 
@@ -3729,7 +3729,7 @@ func TestPrintControllerRevision(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -3796,7 +3796,7 @@ func TestPrintConfigMap(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -3843,7 +3843,7 @@ func TestPrintNetworkPolicy(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -3918,7 +3918,7 @@ func TestPrintRoleBinding(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -3993,7 +3993,7 @@ func TestPrintClusterRoleBinding(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -4135,7 +4135,7 @@ func TestPrintCertificateSigningRequest(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -4262,7 +4262,7 @@ func TestPrintReplicationController(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -4352,7 +4352,7 @@ func TestPrintReplicaSet(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -4420,7 +4420,7 @@ func TestPrintReplicaSetList(t *testing.T) {
 		rows[i].Object.Object = nil
 	}
 	if !reflect.DeepEqual(expectedRows, rows) {
-		t.Errorf("mismatch: %s", diff.ObjectReflectDiff(expectedRows, rows))
+		t.Errorf("mismatch: %s", cmp.Diff(expectedRows, rows))
 	}
 }
 
@@ -4507,7 +4507,7 @@ func TestPrintStatefulSet(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -4651,7 +4651,7 @@ func TestPrintPersistentVolume(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -4774,7 +4774,7 @@ func TestPrintPersistentVolumeClaim(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -4842,7 +4842,7 @@ func TestPrintComponentStatus(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -4980,7 +4980,7 @@ func TestPrintCronJob(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -5046,7 +5046,7 @@ func TestPrintCronJobList(t *testing.T) {
 		rows[i].Object.Object = nil
 	}
 	if !reflect.DeepEqual(expectedRows, rows) {
-		t.Errorf("mismatch: %s", diff.ObjectReflectDiff(expectedRows, rows))
+		t.Errorf("mismatch: %s", cmp.Diff(expectedRows, rows))
 	}
 }
 
@@ -5144,7 +5144,7 @@ func TestPrintStorageClass(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -5191,7 +5191,7 @@ func TestPrintLease(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -5233,7 +5233,7 @@ func TestPrintPriorityClass(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -5274,7 +5274,7 @@ func TestPrintRuntimeClass(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -5394,7 +5394,7 @@ func TestPrintEndpoint(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 
@@ -5493,7 +5493,7 @@ func TestPrintEndpointSlice(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -5641,7 +5641,7 @@ func TestPrintFlowSchema(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -5718,7 +5718,7 @@ func TestPrintPriorityLevelConfiguration(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -5840,7 +5840,7 @@ func TestPrintStorageVersion(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -5877,7 +5877,7 @@ func TestPrintScale(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -6399,7 +6399,7 @@ func TestPrintClusterCIDR(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("%d mismatch: %s", i, diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("%d mismatch: %s", i, cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -6478,7 +6478,7 @@ func TestPrintClusterCIDRList(t *testing.T) {
 			rows[i].Object.Object = nil
 		}
 		if !reflect.DeepEqual(test.expected, rows) {
-			t.Errorf("mismatch: %s", diff.ObjectReflectDiff(test.expected, rows))
+			t.Errorf("mismatch: %s", cmp.Diff(test.expected, rows))
 		}
 	}
 }
@@ -6507,7 +6507,7 @@ func TestPrintIPAddress(t *testing.T) {
 	}
 	rows[0].Object.Object = nil
 	if !reflect.DeepEqual(expected, rows) {
-		t.Errorf("mismatch: %s", diff.ObjectReflectDiff(expected, rows))
+		t.Errorf("mismatch: %s", cmp.Diff(expected, rows))
 	}
 }
 
@@ -6558,7 +6558,7 @@ func TestPrintIPAddressList(t *testing.T) {
 
 	}
 	if !reflect.DeepEqual(expected, rows) {
-		t.Errorf("mismatch: %s", diff.ObjectReflectDiff(expected, rows))
+		t.Errorf("mismatch: %s", cmp.Diff(expected, rows))
 	}
 
 }

pkg/registry/core/node/strategy_test.go

@@ -22,11 +22,11 @@ import (
 	"strings"
 	"testing"
 
+	"github.com/google/go-cmp/cmp"
 	"k8s.io/apimachinery/pkg/api/resource"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/fields"
 	"k8s.io/apimachinery/pkg/labels"
-	"k8s.io/apimachinery/pkg/util/diff"
 	apitesting "k8s.io/kubernetes/pkg/api/testing"
 	api "k8s.io/kubernetes/pkg/apis/core"
 
@@ -167,11 +167,11 @@ func TestDropFields(t *testing.T) {
 			old := tc.oldNode.DeepCopy()
 			// old node  should never be changed
 			if !reflect.DeepEqual(tc.oldNode, old) {
-				t.Errorf("%v: old node changed: %v", tc.name, diff.ObjectReflectDiff(tc.oldNode, old))
+				t.Errorf("%v: old node changed: %v", tc.name, cmp.Diff(tc.oldNode, old))
 			}
 
 			if !reflect.DeepEqual(tc.node, tc.compareNode) {
-				t.Errorf("%v: unexpected node spec: %v", tc.name, diff.ObjectReflectDiff(tc.node, tc.compareNode))
+				t.Errorf("%v: unexpected node spec: %v", tc.name, cmp.Diff(tc.node, tc.compareNode))
 			}
 		}()
 	}

pkg/registry/core/persistentvolumeclaim/strategy_test.go

@@ -21,7 +21,7 @@ import (
 	"reflect"
 	"testing"
 
-	"k8s.io/apimachinery/pkg/util/diff"
+	"github.com/google/go-cmp/cmp"
 	genericapirequest "k8s.io/apiserver/pkg/endpoints/request"
 	utilfeature "k8s.io/apiserver/pkg/util/feature"
 	featuregatetesting "k8s.io/component-base/featuregate/testing"
@@ -86,19 +86,19 @@ func TestDropConditions(t *testing.T) {
 
 				// old pvc should never be changed
 				if !reflect.DeepEqual(oldPvc, oldPvcInfo.pvc()) {
-					t.Errorf("old pvc changed: %v", diff.ObjectReflectDiff(oldPvc, oldPvcInfo.pvc()))
+					t.Errorf("old pvc changed: %v", cmp.Diff(oldPvc, oldPvcInfo.pvc()))
 				}
 
 				switch {
 				case oldPvcHasConditins || newPvcHasConditions:
 					// new pvc should not be changed if the feature is enabled, or if the old pvc had Conditions
 					if !reflect.DeepEqual(newPvc, newPvcInfo.pvc()) {
-						t.Errorf("new pvc changed: %v", diff.ObjectReflectDiff(newPvc, newPvcInfo.pvc()))
+						t.Errorf("new pvc changed: %v", cmp.Diff(newPvc, newPvcInfo.pvc()))
 					}
 				default:
 					// new pvc should not need to be changed
 					if !reflect.DeepEqual(newPvc, newPvcInfo.pvc()) {
-						t.Errorf("new pvc changed: %v", diff.ObjectReflectDiff(newPvc, newPvcInfo.pvc()))
+						t.Errorf("new pvc changed: %v", cmp.Diff(newPvc, newPvcInfo.pvc()))
 					}
 				}
 			})

pkg/registry/core/pod/storage/storage_test.go

@@ -34,7 +34,6 @@ import (
 	"k8s.io/apimachinery/pkg/labels"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/types"
-	"k8s.io/apimachinery/pkg/util/diff"
 	genericapirequest "k8s.io/apiserver/pkg/endpoints/request"
 	"k8s.io/apiserver/pkg/registry/generic"
 	genericregistry "k8s.io/apiserver/pkg/registry/generic/registry"
@@ -610,7 +609,7 @@ func TestConvertToTableList(t *testing.T) {
 			continue
 		}
 		if !apiequality.Semantic.DeepEqual(test.out, out) {
-			t.Errorf("%d: mismatch: %s", i, diff.ObjectReflectDiff(test.out, out))
+			t.Errorf("%d: mismatch: %s", i, cmp.Diff(test.out, out))
 		}
 	}
 }

pkg/registry/core/service/strategy_test.go

@@ -20,9 +20,9 @@ import (
 	"reflect"
 	"testing"
 
+	"github.com/google/go-cmp/cmp"
 	"k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/util/intstr"
 	genericapirequest "k8s.io/apiserver/pkg/endpoints/request"
 	"k8s.io/apiserver/pkg/registry/rest"
@@ -218,11 +218,11 @@ func TestDropDisabledField(t *testing.T) {
 
 			// old node should never be changed
 			if !reflect.DeepEqual(tc.oldSvc, old) {
-				t.Errorf("%v: old svc changed: %v", tc.name, diff.ObjectReflectDiff(tc.oldSvc, old))
+				t.Errorf("%v: old svc changed: %v", tc.name, cmp.Diff(tc.oldSvc, old))
 			}
 
 			if !reflect.DeepEqual(tc.svc, tc.compareSvc) {
-				t.Errorf("%v: unexpected svc spec: %v", tc.name, diff.ObjectReflectDiff(tc.svc, tc.compareSvc))
+				t.Errorf("%v: unexpected svc spec: %v", tc.name, cmp.Diff(tc.svc, tc.compareSvc))
 			}
 		}()
 	}

plugin/pkg/admission/noderestriction/admission.go

@@ -22,12 +22,12 @@ import (
 	"io"
 	"strings"
 
+	"github.com/google/go-cmp/cmp"
 	v1 "k8s.io/api/core/v1"
 	apiequality "k8s.io/apimachinery/pkg/api/equality"
 	"k8s.io/apimachinery/pkg/api/errors"
 	"k8s.io/apimachinery/pkg/api/meta"
 	"k8s.io/apimachinery/pkg/labels"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/util/sets"
 	"k8s.io/apiserver/pkg/admission"
 	apiserveradmission "k8s.io/apiserver/pkg/admission/initializer"
@@ -375,7 +375,7 @@ func (p *Plugin) admitPVCStatus(nodeName string, a admission.Attributes) error {
 
 		// ensure no metadata changed. nodes should not be able to relabel, add finalizers/owners, etc
 		if !apiequality.Semantic.DeepEqual(oldPVC, newPVC) {
-			return admission.NewForbidden(a, fmt.Errorf("node %q is not allowed to update fields other than status.capacity and status.conditions: %v", nodeName, diff.ObjectReflectDiff(oldPVC, newPVC)))
+			return admission.NewForbidden(a, fmt.Errorf("node %q is not allowed to update fields other than status.capacity and status.conditions: %v", nodeName, cmp.Diff(oldPVC, newPVC)))
 		}
 
 		return nil

plugin/pkg/admission/serviceaccount/admission_test.go

@@ -27,7 +27,6 @@ import (
 	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/types"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apiserver/pkg/admission"
 	admissiontesting "k8s.io/apiserver/pkg/admission/testing"
 	"k8s.io/client-go/informers"
@@ -224,10 +223,10 @@ func TestAssignsDefaultServiceAccountAndBoundTokenWithNoSecretTokens(t *testing.
 	}
 
 	if !reflect.DeepEqual(expectedVolumes, pod.Spec.Volumes) {
-		t.Errorf("unexpected volumes: %s", diff.ObjectReflectDiff(expectedVolumes, pod.Spec.Volumes))
+		t.Errorf("unexpected volumes: %s", cmp.Diff(expectedVolumes, pod.Spec.Volumes))
 	}
 	if !reflect.DeepEqual(expectedVolumeMounts, pod.Spec.Containers[0].VolumeMounts) {
-		t.Errorf("unexpected volumes: %s", diff.ObjectReflectDiff(expectedVolumeMounts, pod.Spec.Containers[0].VolumeMounts))
+		t.Errorf("unexpected volumes: %s", cmp.Diff(expectedVolumeMounts, pod.Spec.Containers[0].VolumeMounts))
 	}
 
 	// ensure result converted to v1 matches defaulted object

staging/src/k8s.io/apiextensions-apiserver/pkg/apiserver/schema/objectmeta/coerce_test.go

@@ -21,6 +21,7 @@ import (
 	"reflect"
 	"testing"
 
+	"github.com/google/go-cmp/cmp"
 	corev1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/apitesting/fuzzer"
 	"k8s.io/apimachinery/pkg/api/equality"
@@ -30,7 +31,6 @@ import (
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/serializer"
 	"k8s.io/apimachinery/pkg/runtime/serializer/json"
-	"k8s.io/apimachinery/pkg/util/diff"
 	utiljson "k8s.io/apimachinery/pkg/util/json"
 	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
 )
@@ -56,7 +56,7 @@ func TestRoundtripObjectMeta(t *testing.T) {
 		}
 
 		if !equality.Semantic.DeepEqual(original, o) {
-			t.Errorf("diff: %v\nCodec: %#v", diff.ObjectReflectDiff(original, o), codec)
+			t.Errorf("diff: %v\nCodec: %#v", cmp.Diff(original, o), codec)
 		}
 	}
 }
@@ -153,7 +153,7 @@ func TestMalformedObjectMetaFields(t *testing.T) {
 				}
 
 				if !equality.Semantic.DeepEqual(expectedObjectMeta, actualObjectMeta) {
-					t.Errorf("%v=%#v, diff: %v\n", pth, v, diff.ObjectReflectDiff(expectedObjectMeta, actualObjectMeta))
+					t.Errorf("%v=%#v, diff: %v\n", pth, v, cmp.Diff(expectedObjectMeta, actualObjectMeta))
 					t.Errorf("expectedObjectMeta %#v", expectedObjectMeta)
 				}
 			}

staging/src/k8s.io/apiextensions-apiserver/pkg/registry/customresource/tableconvertor/tableconvertor_test.go

@@ -23,11 +23,11 @@ import (
 	"testing"
 	"time"
 
+	"github.com/google/go-cmp/cmp"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
 	metav1beta1 "k8s.io/apimachinery/pkg/apis/meta/v1beta1"
 	"k8s.io/apimachinery/pkg/runtime"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/client-go/util/jsonpath"
 )
 
@@ -434,7 +434,7 @@ func Test_convertor_ConvertToTable(t *testing.T) {
 				return
 			}
 			if !reflect.DeepEqual(got, tt.want) {
-				t.Errorf("convertor.ConvertToTable() = %s", diff.ObjectReflectDiff(tt.want, got))
+				t.Errorf("convertor.ConvertToTable() = %s", cmp.Diff(tt.want, got))
 			}
 		})
 	}

staging/src/k8s.io/apimachinery/pkg/api/apitesting/roundtrip/roundtrip.go

@@ -26,6 +26,7 @@ import (
 
 	//nolint:staticcheck //iccheck // SA1019 Keep using deprecated module; it still seems to be maintained and the api of the recommended replacement differs
 	"github.com/golang/protobuf/proto"
+	"github.com/google/go-cmp/cmp"
 	fuzz "github.com/google/gofuzz"
 	flag "github.com/spf13/pflag"
 
@@ -39,7 +40,6 @@ import (
 	runtimeserializer "k8s.io/apimachinery/pkg/runtime/serializer"
 	"k8s.io/apimachinery/pkg/runtime/serializer/json"
 	"k8s.io/apimachinery/pkg/runtime/serializer/protobuf"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/util/dump"
 	"k8s.io/apimachinery/pkg/util/sets"
 )
@@ -305,7 +305,7 @@ func roundTrip(t *testing.T, scheme *runtime.Scheme, codec runtime.Codec, object
 	object = object.DeepCopyObject()
 	name := reflect.TypeOf(object).Elem().Name()
 	if !apiequality.Semantic.DeepEqual(original, object) {
-		t.Errorf("%v: DeepCopy altered the object, diff: %v", name, diff.ObjectReflectDiff(original, object))
+		t.Errorf("%v: DeepCopy altered the object, diff: %v", name, cmp.Diff(original, object))
 		t.Errorf("%s", dump.Pretty(original))
 		t.Errorf("%s", dump.Pretty(object))
 		return
@@ -326,7 +326,7 @@ func roundTrip(t *testing.T, scheme *runtime.Scheme, codec runtime.Codec, object
 	// copy or conversion should alter the object
 	// TODO eliminate this global
 	if !apiequality.Semantic.DeepEqual(original, object) {
-		t.Errorf("%v: encode altered the object, diff: %v", name, diff.ObjectReflectDiff(original, object))
+		t.Errorf("%v: encode altered the object, diff: %v", name, cmp.Diff(original, object))
 		return
 	}
 
@@ -357,7 +357,7 @@ func roundTrip(t *testing.T, scheme *runtime.Scheme, codec runtime.Codec, object
 	// ensure that the object produced from decoding the encoded data is equal
 	// to the original object
 	if !apiequality.Semantic.DeepEqual(original, obj2) {
-		t.Errorf("%v: diff: %v\nCodec: %#v\nSource:\n\n%#v\n\nEncoded:\n\n%s\n\nFinal:\n\n%#v", name, diff.ObjectReflectDiff(original, obj2), codec, dump.Pretty(original), dataAsString(data), dump.Pretty(obj2))
+		t.Errorf("%v: diff: %v\nCodec: %#v\nSource:\n\n%#v\n\nEncoded:\n\n%s\n\nFinal:\n\n%#v", name, cmp.Diff(original, obj2), codec, dump.Pretty(original), dataAsString(data), dump.Pretty(obj2))
 		return
 	}
 
@@ -395,7 +395,7 @@ func roundTrip(t *testing.T, scheme *runtime.Scheme, codec runtime.Codec, object
 	// ensure that the new runtime object is equal to the original after being
 	// decoded into
 	if !apiequality.Semantic.DeepEqual(object, obj3) {
-		t.Errorf("%v: diff: %v\nCodec: %#v", name, diff.ObjectReflectDiff(object, obj3), codec)
+		t.Errorf("%v: diff: %v\nCodec: %#v", name, cmp.Diff(object, obj3), codec)
 		return
 	}
 
@@ -404,7 +404,7 @@ func roundTrip(t *testing.T, scheme *runtime.Scheme, codec runtime.Codec, object
 	// NOTE: we use the encoding+decoding here as an alternative, guaranteed deep-copy to compare against.
 	fuzzer.ValueFuzz(object)
 	if !apiequality.Semantic.DeepEqual(original, obj3) {
-		t.Errorf("%v: fuzzing a copy altered the original, diff: %v", name, diff.ObjectReflectDiff(original, obj3))
+		t.Errorf("%v: fuzzing a copy altered the original, diff: %v", name, cmp.Diff(original, obj3))
 		return
 	}
 }

staging/src/k8s.io/apimachinery/pkg/api/meta/meta_test.go

@@ -23,8 +23,8 @@ import (
 
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	metav1beta1 "k8s.io/apimachinery/pkg/apis/meta/v1beta1"
-	"k8s.io/apimachinery/pkg/util/diff"
 
+	"github.com/google/go-cmp/cmp"
 	fuzz "github.com/google/gofuzz"
 )
 
@@ -36,7 +36,7 @@ func TestAsPartialObjectMetadata(t *testing.T) {
 		f.Fuzz(m)
 		partial := AsPartialObjectMetadata(m)
 		if !reflect.DeepEqual(&partial.ObjectMeta, m) {
-			t.Fatalf("incomplete partial object metadata: %s", diff.ObjectReflectDiff(&partial.ObjectMeta, m))
+			t.Fatalf("incomplete partial object metadata: %s", cmp.Diff(&partial.ObjectMeta, m))
 		}
 	}
 
@@ -45,7 +45,7 @@ func TestAsPartialObjectMetadata(t *testing.T) {
 		f.Fuzz(&m.ObjectMeta)
 		partial := AsPartialObjectMetadata(m)
 		if !reflect.DeepEqual(&partial.ObjectMeta, &m.ObjectMeta) {
-			t.Fatalf("incomplete partial object metadata: %s", diff.ObjectReflectDiff(&partial.ObjectMeta, &m.ObjectMeta))
+			t.Fatalf("incomplete partial object metadata: %s", cmp.Diff(&partial.ObjectMeta, &m.ObjectMeta))
 		}
 	}
 }

staging/src/k8s.io/apimachinery/pkg/apis/meta/internalversion/scheme/register_test.go

@@ -21,9 +21,9 @@ import (
 	"reflect"
 	"testing"
 
+	"github.com/google/go-cmp/cmp"
 	metainternalversion "k8s.io/apimachinery/pkg/apis/meta/internalversion"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/apimachinery/pkg/util/diff"
 )
 
 func TestListOptions(t *testing.T) {
@@ -45,7 +45,7 @@ func TestListOptions(t *testing.T) {
 		t.Fatal(err)
 	}
 	if !reflect.DeepEqual(in, actual) {
-		t.Errorf("unexpected: %s", diff.ObjectReflectDiff(in, actual))
+		t.Errorf("unexpected: %s", cmp.Diff(in, actual))
 	}
 
 	// verify failing conversion
@@ -85,6 +85,6 @@ func TestListOptions(t *testing.T) {
 		t.Fatal(err)
 	}
 	if !reflect.DeepEqual(in, actual) {
-		t.Errorf("unexpected: %s", diff.ObjectReflectDiff(in, actual))
+		t.Errorf("unexpected: %s", cmp.Diff(in, actual))
 	}
 }

staging/src/k8s.io/apimachinery/pkg/apis/meta/v1/unstructured/unstructured_test.go

@@ -21,6 +21,7 @@ import (
 	"reflect"
 	"testing"
 
+	"github.com/google/go-cmp/cmp"
 	"github.com/stretchr/testify/assert"
 	"k8s.io/apimachinery/pkg/api/apitesting/fuzzer"
 	"k8s.io/apimachinery/pkg/api/equality"
@@ -29,7 +30,6 @@ import (
 	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/serializer"
-	"k8s.io/apimachinery/pkg/util/diff"
 )
 
 func TestNilUnstructuredContent(t *testing.T) {
@@ -65,7 +65,7 @@ func TestUnstructuredMetadataRoundTrip(t *testing.T) {
 		setObjectMetaUsingAccessors(u, uCopy)
 
 		if !equality.Semantic.DeepEqual(u, uCopy) {
-			t.Errorf("diff: %v", diff.ObjectReflectDiff(u, uCopy))
+			t.Errorf("diff: %v", cmp.Diff(u, uCopy))
 		}
 	}
 }

staging/src/k8s.io/apimachinery/pkg/runtime/converter_test.go

@@ -33,9 +33,9 @@ import (
 	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
 	"k8s.io/apimachinery/pkg/conversion"
 	"k8s.io/apimachinery/pkg/runtime"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/util/json"
 
+	"github.com/google/go-cmp/cmp"
 	fuzz "github.com/google/gofuzz"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
@@ -194,7 +194,7 @@ func doRoundTrip(t *testing.T, item interface{}) {
 		return
 	}
 	if !reflect.DeepEqual(item, unmarshalledObj) {
-		t.Errorf("Object changed during JSON operations, diff: %v", diff.ObjectReflectDiff(item, unmarshalledObj))
+		t.Errorf("Object changed during JSON operations, diff: %v", cmp.Diff(item, unmarshalledObj))
 		return
 	}
 
@@ -213,7 +213,7 @@ func doRoundTrip(t *testing.T, item interface{}) {
 	}
 
 	if !reflect.DeepEqual(item, newObj) {
-		t.Errorf("Object changed, diff: %v", diff.ObjectReflectDiff(item, newObj))
+		t.Errorf("Object changed, diff: %v", cmp.Diff(item, newObj))
 	}
 }
 
@@ -687,7 +687,7 @@ func doUnrecognized(t *testing.T, jsonData string, item interface{}, expectedErr
 	}
 
 	if expectedErr == nil && !reflect.DeepEqual(unmarshalledObj, newObj) {
-		t.Errorf("Object changed, diff: %v", diff.ObjectReflectDiff(unmarshalledObj, newObj))
+		t.Errorf("Object changed, diff: %v", cmp.Diff(unmarshalledObj, newObj))
 	}
 }
 
@@ -916,7 +916,7 @@ func TestFloatIntConversion(t *testing.T) {
 	}
 
 	if !reflect.DeepEqual(obj, unmarshalled) {
-		t.Errorf("Incorrect conversion, diff: %v", diff.ObjectReflectDiff(obj, unmarshalled))
+		t.Errorf("Incorrect conversion, diff: %v", cmp.Diff(obj, unmarshalled))
 	}
 }
 
@@ -938,7 +938,7 @@ func TestIntFloatConversion(t *testing.T) {
 	}
 
 	if !reflect.DeepEqual(obj, unmarshalled) {
-		t.Errorf("Incorrect conversion, diff: %v", diff.ObjectReflectDiff(obj, unmarshalled))
+		t.Errorf("Incorrect conversion, diff: %v", cmp.Diff(obj, unmarshalled))
 	}
 }
 

staging/src/k8s.io/apimachinery/pkg/runtime/mapper_test.go

@@ -20,8 +20,8 @@ import (
 	"reflect"
 	"testing"
 
+	"github.com/google/go-cmp/cmp"
 	"k8s.io/apimachinery/pkg/runtime/schema"
-	"k8s.io/apimachinery/pkg/util/diff"
 )
 
 func TestResourceMapper(t *testing.T) {
@@ -122,14 +122,14 @@ func TestResourceMapper(t *testing.T) {
 
 			// Verify equivalents to primary resource
 			if resources := mapper.EquivalentResourcesFor(gvr("apps", "v1", "deployments"), ""); !reflect.DeepEqual(resources, tc.ResourcesForV1Deployment) {
-				t.Errorf("diff:\n%s", diff.ObjectReflectDiff(tc.ResourcesForV1Deployment, resources))
+				t.Errorf("diff:\n%s", cmp.Diff(tc.ResourcesForV1Deployment, resources))
 			}
 			// Verify equivalents to subresources
 			if resources := mapper.EquivalentResourcesFor(gvr("apps", "v1", "deployments"), "scale"); !reflect.DeepEqual(resources, tc.ResourcesForV1DeploymentScale) {
-				t.Errorf("diff:\n%s", diff.ObjectReflectDiff(tc.ResourcesForV1DeploymentScale, resources))
+				t.Errorf("diff:\n%s", cmp.Diff(tc.ResourcesForV1DeploymentScale, resources))
 			}
 			if resources := mapper.EquivalentResourcesFor(gvr("apps", "v1", "deployments"), "status"); !reflect.DeepEqual(resources, tc.ResourcesForV1DeploymentStatus) {
-				t.Errorf("diff:\n%s", diff.ObjectReflectDiff(tc.ResourcesForV1DeploymentStatus, resources))
+				t.Errorf("diff:\n%s", cmp.Diff(tc.ResourcesForV1DeploymentStatus, resources))
 			}
 		})
 	}

staging/src/k8s.io/apimachinery/pkg/runtime/scheme_test.go

@@ -22,6 +22,7 @@ import (
 	"strings"
 	"testing"
 
+	"github.com/google/go-cmp/cmp"
 	"k8s.io/apimachinery/pkg/conversion"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
@@ -856,17 +857,17 @@ func TestConvertToVersion(t *testing.T) {
 
 			if test.same {
 				if !reflect.DeepEqual(original, test.in) {
-					t.Fatalf("unexpected mutation of input: %s", diff.ObjectReflectDiff(original, test.in))
+					t.Fatalf("unexpected mutation of input: %s", cmp.Diff(original, test.in))
 				}
 				if !reflect.DeepEqual(out, test.out) {
-					t.Fatalf("unexpected out: %s", diff.ObjectReflectDiff(out, test.out))
+					t.Fatalf("unexpected out: %s", cmp.Diff(out, test.out))
 				}
 				unsafe, err := test.scheme.UnsafeConvertToVersion(test.in, test.gv)
 				if err != nil {
 					t.Fatalf("unexpected error: %v", err)
 				}
 				if !reflect.DeepEqual(unsafe, test.out) {
-					t.Fatalf("unexpected unsafe: %s", diff.ObjectReflectDiff(unsafe, test.out))
+					t.Fatalf("unexpected unsafe: %s", cmp.Diff(unsafe, test.out))
 				}
 				if unsafe != test.in {
 					t.Fatalf("UnsafeConvertToVersion should return same object: %#v", unsafe)
@@ -874,7 +875,7 @@ func TestConvertToVersion(t *testing.T) {
 				return
 			}
 			if !reflect.DeepEqual(out, test.out) {
-				t.Fatalf("unexpected out: %s", diff.ObjectReflectDiff(out, test.out))
+				t.Fatalf("unexpected out: %s", cmp.Diff(out, test.out))
 			}
 		})
 	}
@@ -917,7 +918,7 @@ func TestConvert(t *testing.T) {
 			}
 
 			if !reflect.DeepEqual(test.into, test.out) {
-				t.Fatalf("unexpected out: %s", diff.ObjectReflectDiff(test.into, test.out))
+				t.Fatalf("unexpected out: %s", cmp.Diff(test.into, test.out))
 			}
 		})
 	}

staging/src/k8s.io/apimachinery/pkg/util/proxy/dial_test.go

@@ -29,7 +29,7 @@ import (
 	"regexp"
 	"testing"
 
-	"k8s.io/apimachinery/pkg/util/diff"
+	"github.com/google/go-cmp/cmp"
 	utilnet "k8s.io/apimachinery/pkg/util/net"
 )
 
@@ -147,7 +147,7 @@ func TestDialURL(t *testing.T) {
 
 			// Make sure dialing doesn't mutate the transport's TLSConfig
 			if !reflect.DeepEqual(tc.TLSConfig, tlsConfigCopy) {
-				t.Errorf("%s: transport's copy of TLSConfig was mutated\n%s", k, diff.ObjectReflectDiff(tc.TLSConfig, tlsConfigCopy))
+				t.Errorf("%s: transport's copy of TLSConfig was mutated\n%s", k, cmp.Diff(tc.TLSConfig, tlsConfigCopy))
 			}
 
 			if err != nil {

staging/src/k8s.io/apiserver/pkg/admission/conversion_test.go

@@ -21,13 +21,13 @@ import (
 	"reflect"
 	"testing"
 
+	"github.com/google/go-cmp/cmp"
 	"github.com/stretchr/testify/require"
 
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apiserver/pkg/apis/example"
 	examplev1 "k8s.io/apiserver/pkg/apis/example/v1"
 	example2v1 "k8s.io/apiserver/pkg/apis/example2/v1"
@@ -341,22 +341,22 @@ func TestConvertVersionedAttributes(t *testing.T) {
 				t.Fatal(err)
 			}
 			if e, a := tc.ExpectedAttrs.Attributes.GetObject(), tc.Attrs.Attributes.GetObject(); !reflect.DeepEqual(e, a) {
-				t.Errorf("unexpected diff:\n%s", diff.ObjectReflectDiff(e, a))
+				t.Errorf("unexpected diff:\n%s", cmp.Diff(e, a))
 			}
 			if e, a := tc.ExpectedAttrs.Attributes.GetOldObject(), tc.Attrs.Attributes.GetOldObject(); !reflect.DeepEqual(e, a) {
-				t.Errorf("unexpected diff:\n%s", diff.ObjectReflectDiff(e, a))
+				t.Errorf("unexpected diff:\n%s", cmp.Diff(e, a))
 			}
 			if e, a := tc.ExpectedAttrs.VersionedKind, tc.Attrs.VersionedKind; !reflect.DeepEqual(e, a) {
-				t.Errorf("unexpected diff:\n%s", diff.ObjectReflectDiff(e, a))
+				t.Errorf("unexpected diff:\n%s", cmp.Diff(e, a))
 			}
 			if e, a := tc.ExpectedAttrs.VersionedObject, tc.Attrs.VersionedObject; !reflect.DeepEqual(e, a) {
-				t.Errorf("unexpected diff:\n%s", diff.ObjectReflectDiff(e, a))
+				t.Errorf("unexpected diff:\n%s", cmp.Diff(e, a))
 			}
 			if e, a := tc.ExpectedAttrs.VersionedOldObject, tc.Attrs.VersionedOldObject; !reflect.DeepEqual(e, a) {
-				t.Errorf("unexpected diff:\n%s", diff.ObjectReflectDiff(e, a))
+				t.Errorf("unexpected diff:\n%s", cmp.Diff(e, a))
 			}
 			if e, a := tc.ExpectedAttrs.Dirty, tc.Attrs.Dirty; !reflect.DeepEqual(e, a) {
-				t.Errorf("unexpected diff:\n%s", diff.ObjectReflectDiff(e, a))
+				t.Errorf("unexpected diff:\n%s", cmp.Diff(e, a))
 			}
 		})
 	}

staging/src/k8s.io/apiserver/pkg/admission/plugin/namespace/lifecycle/admission_test.go

@@ -23,12 +23,12 @@ import (
 	"testing"
 	"time"
 
+	"github.com/google/go-cmp/cmp"
 	v1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/util/sets"
 	"k8s.io/apimachinery/pkg/util/wait"
 	"k8s.io/apiserver/pkg/admission"
@@ -202,7 +202,7 @@ func TestAdmissionNamespaceTerminating(t *testing.T) {
 		Field:   "metadata.namespace",
 	}
 	if cause, ok := errors.StatusCause(err, v1.NamespaceTerminatingCause); !ok || !reflect.DeepEqual(expectedCause, cause) {
-		t.Errorf("Expected status cause indicating the namespace is terminating: %t %s", ok, diff.ObjectReflectDiff(expectedCause, cause))
+		t.Errorf("Expected status cause indicating the namespace is terminating: %t %s", ok, cmp.Diff(expectedCause, cause))
 	}
 
 	// verify update operations in the namespace can proceed

staging/src/k8s.io/apiserver/pkg/admission/plugin/webhook/accessors_test.go

@@ -21,9 +21,9 @@ import (
 	"reflect"
 	"testing"
 
+	"github.com/google/go-cmp/cmp"
 	fuzz "github.com/google/gofuzz"
-	"k8s.io/api/admissionregistration/v1"
+	v1 "k8s.io/api/admissionregistration/v1"
-	"k8s.io/apimachinery/pkg/util/diff"
 )
 
 func TestMutatingWebhookAccessor(t *testing.T) {
@@ -46,7 +46,7 @@ func TestMutatingWebhookAccessor(t *testing.T) {
 				t.Errorf("expected GetMutatingWebhook to return ok for mutating webhook accessor")
 			}
 			if !reflect.DeepEqual(orig, m) {
-				t.Errorf("expected GetMutatingWebhook to return original webhook, diff:\n%s", diff.ObjectReflectDiff(orig, m))
+				t.Errorf("expected GetMutatingWebhook to return original webhook, diff:\n%s", cmp.Diff(orig, m))
 			}
 			if _, ok := accessor.GetValidatingWebhook(); ok {
 				t.Errorf("expected GetValidatingWebhook to be nil for mutating webhook accessor")
@@ -65,7 +65,7 @@ func TestMutatingWebhookAccessor(t *testing.T) {
 				MatchConditions:         accessor.GetMatchConditions(),
 			}
 			if !reflect.DeepEqual(orig, copy) {
-				t.Errorf("expected mutatingWebhook to round trip through WebhookAccessor, diff:\n%s", diff.ObjectReflectDiff(orig, copy))
+				t.Errorf("expected mutatingWebhook to round trip through WebhookAccessor, diff:\n%s", cmp.Diff(orig, copy))
 			}
 		})
 	}
@@ -87,7 +87,7 @@ func TestValidatingWebhookAccessor(t *testing.T) {
 				t.Errorf("expected GetValidatingWebhook to return ok for validating webhook accessor")
 			}
 			if !reflect.DeepEqual(orig, m) {
-				t.Errorf("expected GetValidatingWebhook to return original webhook, diff:\n%s", diff.ObjectReflectDiff(orig, m))
+				t.Errorf("expected GetValidatingWebhook to return original webhook, diff:\n%s", cmp.Diff(orig, m))
 			}
 			if _, ok := accessor.GetMutatingWebhook(); ok {
 				t.Errorf("expected GetMutatingWebhook to be nil for validating webhook accessor")
@@ -106,7 +106,7 @@ func TestValidatingWebhookAccessor(t *testing.T) {
 				MatchConditions:         accessor.GetMatchConditions(),
 			}
 			if !reflect.DeepEqual(orig, copy) {
-				t.Errorf("expected validatingWebhook to round trip through WebhookAccessor, diff:\n%s", diff.ObjectReflectDiff(orig, copy))
+				t.Errorf("expected validatingWebhook to round trip through WebhookAccessor, diff:\n%s", cmp.Diff(orig, copy))
 			}
 		})
 	}

staging/src/k8s.io/apiserver/pkg/admission/testing/helpers.go

@@ -21,9 +21,9 @@ import (
 	"reflect"
 	"testing"
 
+	"github.com/google/go-cmp/cmp"
 	apiequality "k8s.io/apimachinery/pkg/api/equality"
 	"k8s.io/apimachinery/pkg/runtime"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apiserver/pkg/admission"
 )
 
@@ -63,7 +63,7 @@ func (r *reinvoker) Admit(ctx context.Context, a admission.Attributes, o admissi
 	}
 	for i := 1; i < len(outputs); i++ {
 		if !apiequality.Semantic.DeepEqual(outputs[0], outputs[i]) {
-			r.t.Errorf("expected mutating admission plugin to be idempontent, but got different results on reinvocation, diff:\n%s", diff.ObjectReflectDiff(outputs[0], outputs[i]))
+			r.t.Errorf("expected mutating admission plugin to be idempontent, but got different results on reinvocation, diff:\n%s", cmp.Diff(outputs[0], outputs[i]))
 		}
 	}
 	return nil

staging/src/k8s.io/apiserver/pkg/endpoints/apiserver_test.go

@@ -56,7 +56,6 @@ import (
 	"k8s.io/apimachinery/pkg/runtime/serializer"
 	"k8s.io/apimachinery/pkg/runtime/serializer/streaming"
 	"k8s.io/apimachinery/pkg/types"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/util/net"
 	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
 	"k8s.io/apimachinery/pkg/util/sets"
@@ -1833,7 +1832,7 @@ func TestGetTable(t *testing.T) {
 			}
 			if !reflect.DeepEqual(test.expected, &itemOut) {
 				t.Log(body)
-				t.Errorf("%d: did not match: %s", i, diff.ObjectReflectDiff(test.expected, &itemOut))
+				t.Errorf("%d: did not match: %s", i, cmp.Diff(test.expected, &itemOut))
 			}
 		})
 	}
@@ -2062,7 +2061,7 @@ func TestWatchTable(t *testing.T) {
 				actual = append(actual, &event)
 			}
 			if !reflect.DeepEqual(test.expected, actual) {
-				t.Fatalf("unexpected: %s", diff.ObjectReflectDiff(test.expected, actual))
+				t.Fatalf("unexpected: %s", cmp.Diff(test.expected, actual))
 			}
 		})
 	}
@@ -2240,7 +2239,7 @@ func TestGetPartialObjectMetadata(t *testing.T) {
 				t.Fatal(err)
 			}
 			if !reflect.DeepEqual(test.expected, itemOut) {
-				t.Errorf("%d: did not match: %s", i, diff.ObjectReflectDiff(test.expected, itemOut))
+				t.Errorf("%d: did not match: %s", i, cmp.Diff(test.expected, itemOut))
 			}
 			body = d
 		} else {

staging/src/k8s.io/apiserver/pkg/endpoints/handlers/responsewriters/writers_test.go

@@ -35,11 +35,11 @@ import (
 	"testing"
 	"time"
 
+	"github.com/google/go-cmp/cmp"
 	v1 "k8s.io/api/core/v1"
 	kerrors "k8s.io/apimachinery/pkg/api/errors"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/util/uuid"
 	"k8s.io/apiserver/pkg/features"
 	utilfeature "k8s.io/apiserver/pkg/util/feature"
@@ -114,7 +114,7 @@ func TestSerializeObjectParallel(t *testing.T) {
 				t.Fatalf("unexpected code: %v", result.StatusCode)
 			}
 			if !reflect.DeepEqual(result.Header, ctt.wantHeaders) {
-				t.Fatal(diff.ObjectReflectDiff(ctt.wantHeaders, result.Header))
+				t.Fatal(cmp.Diff(ctt.wantHeaders, result.Header))
 			}
 		})
 	}
@@ -364,7 +364,7 @@ func TestSerializeObject(t *testing.T) {
 				t.Fatalf("unexpected code: %v", result.StatusCode)
 			}
 			if !reflect.DeepEqual(result.Header, tt.wantHeaders) {
-				t.Fatal(diff.ObjectReflectDiff(tt.wantHeaders, result.Header))
+				t.Fatal(cmp.Diff(tt.wantHeaders, result.Header))
 			}
 			body, _ := ioutil.ReadAll(result.Body)
 			if !bytes.Equal(tt.wantBody, body) {

staging/src/k8s.io/apiserver/pkg/endpoints/handlers/rest_test.go

@@ -39,7 +39,6 @@ import (
 	"k8s.io/apimachinery/pkg/runtime/schema"
 	"k8s.io/apimachinery/pkg/runtime/serializer"
 	"k8s.io/apimachinery/pkg/types"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/util/json"
 	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
 	"k8s.io/apimachinery/pkg/util/strategicpatch"
@@ -1280,7 +1279,7 @@ func TestDedupOwnerReferences(t *testing.T) {
 		t.Run(tc.name, func(t *testing.T) {
 			deduped, _ := dedupOwnerReferences(tc.ownerReferences)
 			if !apiequality.Semantic.DeepEqual(deduped, tc.expected) {
-				t.Errorf("diff: %v", diff.ObjectReflectDiff(deduped, tc.expected))
+				t.Errorf("diff: %v", cmp.Diff(deduped, tc.expected))
 			}
 		})
 	}

staging/src/k8s.io/apiserver/pkg/storage/cacher/cache_watcher_test.go

@@ -24,13 +24,13 @@ import (
 	"testing"
 	"time"
 
+	"github.com/google/go-cmp/cmp"
 	v1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/fields"
 	"k8s.io/apimachinery/pkg/labels"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/util/wait"
 	"k8s.io/apimachinery/pkg/watch"
 	"k8s.io/apiserver/pkg/storage"
@@ -189,7 +189,7 @@ TestCase:
 		for j, event := range testCase.expected {
 			e := <-ch
 			if !reflect.DeepEqual(event, e) {
-				t.Errorf("%d: unexpected event %d: %s", i, j, diff.ObjectReflectDiff(event, e))
+				t.Errorf("%d: unexpected event %d: %s", i, j, cmp.Diff(event, e))
 				break TestCase
 			}
 		}

staging/src/k8s.io/apiserver/pkg/util/webhook/authentication_test.go

@@ -19,8 +19,8 @@ package webhook
 import (
 	"testing"
 
+	"github.com/google/go-cmp/cmp"
 	"k8s.io/apimachinery/pkg/api/equality"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/client-go/rest"
 	clientcmdapi "k8s.io/client-go/tools/clientcmd/api"
 )
@@ -230,7 +230,7 @@ func TestAuthenticationDetection(t *testing.T) {
 			actual.Timeout = 0
 
 			if !equality.Semantic.DeepEqual(*actual, tc.expected) {
-				t.Errorf("%v", diff.ObjectReflectDiff(tc.expected, *actual))
+				t.Errorf("%v", cmp.Diff(tc.expected, *actual))
 			}
 		})
 	}

staging/src/k8s.io/apiserver/plugin/pkg/authenticator/token/webhook/round_trip_test.go

@@ -23,11 +23,11 @@ import (
 	"testing"
 	"time"
 
+	"github.com/google/go-cmp/cmp"
 	fuzz "github.com/google/gofuzz"
 
 	authenticationv1 "k8s.io/api/authentication/v1"
 	authenticationv1beta1 "k8s.io/api/authentication/v1beta1"
-	"k8s.io/apimachinery/pkg/util/diff"
 )
 
 func TestRoundTrip(t *testing.T) {
@@ -49,7 +49,7 @@ func TestRoundTrip(t *testing.T) {
 			Status: v1beta1StatusToV1Status(&converted.Status),
 		}
 		if !reflect.DeepEqual(original, roundtripped) {
-			t.Errorf("diff %s", diff.ObjectReflectDiff(original, roundtripped))
+			t.Errorf("diff %s", cmp.Diff(original, roundtripped))
 		}
 	}
 }

staging/src/k8s.io/apiserver/plugin/pkg/authorizer/webhook/round_trip_test.go

@@ -23,11 +23,11 @@ import (
 	"testing"
 	"time"
 
+	"github.com/google/go-cmp/cmp"
 	fuzz "github.com/google/gofuzz"
 
 	authorizationv1 "k8s.io/api/authorization/v1"
 	authorizationv1beta1 "k8s.io/api/authorization/v1beta1"
-	"k8s.io/apimachinery/pkg/util/diff"
 )
 
 func TestRoundTrip(t *testing.T) {
@@ -49,7 +49,7 @@ func TestRoundTrip(t *testing.T) {
 			Status: v1beta1StatusToV1Status(&converted.Status),
 		}
 		if !reflect.DeepEqual(original, roundtripped) {
-			t.Errorf("diff %s", diff.ObjectReflectDiff(original, roundtripped))
+			t.Errorf("diff %s", cmp.Diff(original, roundtripped))
 		}
 	}
 }

staging/src/k8s.io/client-go/discovery/discovery_client_test.go

@@ -36,7 +36,6 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/util/sets"
 	"k8s.io/apimachinery/pkg/version"
 	"k8s.io/client-go/openapi"
@@ -437,7 +436,7 @@ func TestGetServerResourcesForGroupVersion(t *testing.T) {
 		"extensions/v1beta10",
 	}
 	if !reflect.DeepEqual(expectedGroupVersions, serverGroupVersions) {
-		t.Errorf("unexpected group versions: %v", diff.ObjectReflectDiff(expectedGroupVersions, serverGroupVersions))
+		t.Errorf("unexpected group versions: %v", cmp.Diff(expectedGroupVersions, serverGroupVersions))
 	}
 }
 

staging/src/k8s.io/client-go/metadata/metadata_test.go

@@ -26,11 +26,11 @@ import (
 	"strings"
 	"testing"
 
+	"github.com/google/go-cmp/cmp"
 	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/client-go/rest"
 )
 
@@ -89,7 +89,7 @@ func TestClient(t *testing.T) {
 					},
 				}
 				if !reflect.DeepEqual(expect, obj) {
-					t.Fatal(diff.ObjectReflectDiff(expect, obj))
+					t.Fatal(cmp.Diff(expect, obj))
 				}
 			},
 		},
@@ -146,7 +146,7 @@ func TestClient(t *testing.T) {
 					},
 				}
 				if !reflect.DeepEqual(expect, objs.Items) {
-					t.Fatal(diff.ObjectReflectDiff(expect, objs.Items))
+					t.Fatal(cmp.Diff(expect, objs.Items))
 				}
 			},
 		},

staging/src/k8s.io/client-go/rest/request_test.go

@@ -45,7 +45,6 @@ import (
 	"k8s.io/apimachinery/pkg/runtime/schema"
 	"k8s.io/apimachinery/pkg/runtime/serializer"
 	"k8s.io/apimachinery/pkg/runtime/serializer/streaming"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/util/intstr"
 	utilnet "k8s.io/apimachinery/pkg/util/net"
 	"k8s.io/apimachinery/pkg/watch"
@@ -925,22 +924,22 @@ func TestTransformUnstructuredError(t *testing.T) {
 				expect = err
 			}
 			if !reflect.DeepEqual(expect, transformed) {
-				t.Errorf("unexpected Error(): %s", diff.ObjectReflectDiff(expect, transformed))
+				t.Errorf("unexpected Error(): %s", cmp.Diff(expect, transformed))
 			}
 
 			// verify result.Get properly transforms the error
 			if _, err := result.Get(); !reflect.DeepEqual(expect, err) {
-				t.Errorf("unexpected error on Get(): %s", diff.ObjectReflectDiff(expect, err))
+				t.Errorf("unexpected error on Get(): %s", cmp.Diff(expect, err))
 			}
 
 			// verify result.Into properly handles the error
 			if err := result.Into(&v1.Pod{}); !reflect.DeepEqual(expect, err) {
-				t.Errorf("unexpected error on Into(): %s", diff.ObjectReflectDiff(expect, err))
+				t.Errorf("unexpected error on Into(): %s", cmp.Diff(expect, err))
 			}
 
 			// verify result.Raw leaves the error in the untransformed state
 			if _, err := result.Raw(); !reflect.DeepEqual(result.err, err) {
-				t.Errorf("unexpected error on Raw(): %s", diff.ObjectReflectDiff(expect, err))
+				t.Errorf("unexpected error on Raw(): %s", cmp.Diff(expect, err))
 			}
 		})
 	}
@@ -1220,7 +1219,7 @@ func TestRequestWatch(t *testing.T) {
 						t.Fatalf("Watch closed early, %d/%d read", i, len(testCase.Expect))
 					}
 					if !reflect.DeepEqual(evt, out) {
-						t.Fatalf("Event %d does not match: %s", i, diff.ObjectReflectDiff(evt, out))
+						t.Fatalf("Event %d does not match: %s", i, cmp.Diff(evt, out))
 					}
 				}
 			}

staging/src/k8s.io/client-go/tools/clientcmd/loader_test.go

@@ -26,10 +26,10 @@ import (
 	"strings"
 	"testing"
 
+	"github.com/google/go-cmp/cmp"
 	"sigs.k8s.io/yaml"
 
 	"k8s.io/apimachinery/pkg/runtime"
-	"k8s.io/apimachinery/pkg/util/diff"
 	clientcmdapi "k8s.io/client-go/tools/clientcmd/api"
 	clientcmdlatest "k8s.io/client-go/tools/clientcmd/api/latest"
 )
@@ -248,7 +248,7 @@ preferences: {}
 users: null
 `)
 	if !bytes.Equal(expected, data) {
-		t.Error(diff.ObjectReflectDiff(string(expected), string(data)))
+		t.Error(cmp.Diff(string(expected), string(data)))
 	}
 }
 

staging/src/k8s.io/client-go/tools/events/event_broadcaster_test.go

@@ -21,9 +21,9 @@ import (
 	"reflect"
 	"testing"
 
+	"github.com/google/go-cmp/cmp"
 	eventsv1 "k8s.io/api/events/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/client-go/kubernetes/fake"
 )
 
@@ -96,7 +96,7 @@ func TestRecordEventToSink(t *testing.T) {
 
 			recordedEvent := recordedEvents.Items[0]
 			if !reflect.DeepEqual(recordedEvent, tc.expectedRecordedEvent) {
-				t.Errorf("expected to have recorded Event: %#+v, got: %#+v\n diff: %s", tc.expectedRecordedEvent, recordedEvent, diff.ObjectReflectDiff(tc.expectedRecordedEvent, recordedEvent))
+				t.Errorf("expected to have recorded Event: %#+v, got: %#+v\n diff: %s", tc.expectedRecordedEvent, recordedEvent, cmp.Diff(tc.expectedRecordedEvent, recordedEvent))
 			}
 		})
 	}

staging/src/k8s.io/client-go/tools/leaderelection/leaderelection_test.go

@@ -24,13 +24,13 @@ import (
 	"testing"
 	"time"
 
+	"github.com/google/go-cmp/cmp"
 	coordinationv1 "k8s.io/api/coordination/v1"
 	corev1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/equality"
 	"k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/util/wait"
 	"k8s.io/client-go/kubernetes/fake"
 	fakeclient "k8s.io/client-go/testing"
@@ -371,13 +371,13 @@ func TestLeaseSpecToLeaderElectionRecordRoundTrip(t *testing.T) {
 	newSpec := rl.LeaderElectionRecordToLeaseSpec(oldRecord)
 
 	if !equality.Semantic.DeepEqual(oldSpec, newSpec) {
-		t.Errorf("diff: %v", diff.ObjectReflectDiff(oldSpec, newSpec))
+		t.Errorf("diff: %v", cmp.Diff(oldSpec, newSpec))
 	}
 
 	newRecord := rl.LeaseSpecToLeaderElectionRecord(&newSpec)
 
 	if !equality.Semantic.DeepEqual(oldRecord, newRecord) {
-		t.Errorf("diff: %v", diff.ObjectReflectDiff(oldRecord, newRecord))
+		t.Errorf("diff: %v", cmp.Diff(oldRecord, newRecord))
 	}
 }
 

staging/src/k8s.io/client-go/tools/watch/informerwatcher_test.go

@@ -25,13 +25,13 @@ import (
 	"time"
 
 	"github.com/davecgh/go-spew/spew"
+	"github.com/google/go-cmp/cmp"
 
 	corev1 "k8s.io/api/core/v1"
 	apierrors "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/watch"
 	fakeclientset "k8s.io/client-go/kubernetes/fake"
 	testcore "k8s.io/client-go/testing"
@@ -260,7 +260,7 @@ func TestNewInformerWatcher(t *testing.T) {
 			sort.Sort(byEventTypeAndName(result))
 
 			if !reflect.DeepEqual(expected, result) {
-				t.Error(spew.Errorf("\nexpected: %#v,\ngot:      %#v,\ndiff: %s", expected, result, diff.ObjectReflectDiff(expected, result)))
+				t.Error(spew.Errorf("\nexpected: %#v,\ngot:      %#v,\ndiff: %s", expected, result, cmp.Diff(expected, result)))
 				return
 			}
 

staging/src/k8s.io/client-go/tools/watch/retrywatcher_test.go

@@ -27,12 +27,12 @@ import (
 	"time"
 
 	"github.com/davecgh/go-spew/spew"
+	"github.com/google/go-cmp/cmp"
 
 	apierrors "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/util/wait"
 	"k8s.io/apimachinery/pkg/watch"
 	"k8s.io/client-go/tools/cache"
@@ -564,7 +564,7 @@ func TestRetryWatcher(t *testing.T) {
 			}
 
 			if !reflect.DeepEqual(tc.expected, got) {
-				t.Fatal(spew.Errorf("expected %#+v, got %#+v;\ndiff: %s", tc.expected, got, diff.ObjectReflectDiff(tc.expected, got)))
+				t.Fatal(spew.Errorf("expected %#+v, got %#+v;\ndiff: %s", tc.expected, got, cmp.Diff(tc.expected, got)))
 			}
 		})
 	}

staging/src/k8s.io/cloud-provider/options/options_test.go

@@ -23,9 +23,9 @@ import (
 	"testing"
 	"time"
 
+	"github.com/google/go-cmp/cmp"
 	"github.com/spf13/pflag"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/apimachinery/pkg/util/diff"
 	apiserver "k8s.io/apiserver/pkg/server"
 	apiserveroptions "k8s.io/apiserver/pkg/server/options"
 	appconfig "k8s.io/cloud-provider/app/config"
@@ -150,7 +150,7 @@ func TestDefaultFlags(t *testing.T) {
 		NodeStatusUpdateFrequency: metav1.Duration{Duration: 5 * time.Minute},
 	}
 	if !reflect.DeepEqual(expected, s) {
-		t.Errorf("Got different run options than expected.\nDifference detected on:\n%s", diff.ObjectReflectDiff(expected, s))
+		t.Errorf("Got different run options than expected.\nDifference detected on:\n%s", cmp.Diff(expected, s))
 	}
 }
 
@@ -309,7 +309,7 @@ func TestAddFlags(t *testing.T) {
 		NodeStatusUpdateFrequency: metav1.Duration{Duration: 10 * time.Minute},
 	}
 	if !reflect.DeepEqual(expected, s) {
-		t.Errorf("Got different run options than expected.\nDifference detected on:\n%s", diff.ObjectReflectDiff(expected, s))
+		t.Errorf("Got different run options than expected.\nDifference detected on:\n%s", cmp.Diff(expected, s))
 	}
 }
 
@@ -444,6 +444,6 @@ func TestCreateConfig(t *testing.T) {
 	c.LoopbackClientConfig = nil
 
 	if !reflect.DeepEqual(expected, c) {
-		t.Errorf("Got different config than expected.\nDifference detected on:\n%s", diff.ObjectReflectDiff(expected, c))
+		t.Errorf("Got different config than expected.\nDifference detected on:\n%s", cmp.Diff(expected, c))
 	}
 }

staging/src/k8s.io/kubectl/pkg/cmd/create/create_role_test.go

@@ -20,12 +20,12 @@ import (
 	"reflect"
 	"testing"
 
+	"github.com/google/go-cmp/cmp"
 	rbac "k8s.io/api/rbac/v1"
 	"k8s.io/apimachinery/pkg/api/equality"
-	"k8s.io/apimachinery/pkg/apis/meta/v1"
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/cli-runtime/pkg/genericclioptions"
 	"k8s.io/cli-runtime/pkg/genericiooptions"
 	"k8s.io/client-go/rest/fake"
@@ -150,7 +150,7 @@ func TestCreateRole(t *testing.T) {
 				t.Fatal(err)
 			}
 			if !equality.Semantic.DeepEqual(test.expectedRole, actual) {
-				t.Errorf("%s", diff.ObjectReflectDiff(test.expectedRole, actual))
+				t.Errorf("%s", cmp.Diff(test.expectedRole, actual))
 			}
 		})
 	}

staging/src/k8s.io/kubectl/pkg/cmd/get/sorter_test.go

@@ -22,6 +22,7 @@ import (
 	"strings"
 	"testing"
 
+	"github.com/google/go-cmp/cmp"
 	corev1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/meta"
 	"k8s.io/apimachinery/pkg/api/resource"
@@ -29,7 +30,6 @@ import (
 	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
 	metav1beta1 "k8s.io/apimachinery/pkg/apis/meta/v1beta1"
 	"k8s.io/apimachinery/pkg/runtime"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/kubectl/pkg/scheme"
 )
 
@@ -677,7 +677,7 @@ func TestSortingPrinter(t *testing.T) {
 				t.Fatalf("%s: expected error containing: %q, got none", tt.name, tt.expectedErr)
 			}
 			if !reflect.DeepEqual(table, expectedTable) {
-				t.Errorf("[%s]\nexpected/saw:\n%s", tt.name, diff.ObjectReflectDiff(expectedTable, table))
+				t.Errorf("[%s]\nexpected/saw:\n%s", tt.name, cmp.Diff(expectedTable, table))
 			}
 		})
 		t.Run(tt.name, func(t *testing.T) {

staging/src/k8s.io/kubectl/pkg/cmd/util/helpers_test.go

@@ -36,7 +36,6 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/util/validation/field"
 	"k8s.io/kubectl/pkg/scheme"
 	"k8s.io/utils/exec"
@@ -155,7 +154,7 @@ func TestMerge(t *testing.T) {
 			if err != nil {
 				t.Errorf("testcase[%d], unexpected error: %v", i, err)
 			} else if !apiequality.Semantic.DeepEqual(test.expected, out) {
-				t.Errorf("\n\ntestcase[%d]\nexpected:\n%s", i, diff.ObjectReflectDiff(test.expected, out))
+				t.Errorf("\n\ntestcase[%d]\nexpected:\n%s", i, cmp.Diff(test.expected, out))
 			}
 		}
 		if test.expectErr && err == nil {
@@ -238,7 +237,7 @@ func TestStrategicMerge(t *testing.T) {
 			if err != nil {
 				t.Errorf("testcase[%d], unexpected error: %v", i, err)
 			} else if !apiequality.Semantic.DeepEqual(test.expected, out) {
-				t.Errorf("\n\ntestcase[%d]\nexpected:\n%s", i, diff.ObjectReflectDiff(test.expected, out))
+				t.Errorf("\n\ntestcase[%d]\nexpected:\n%s", i, cmp.Diff(test.expected, out))
 			}
 		}
 		if test.expectErr && err == nil {
@@ -300,7 +299,7 @@ func TestJSONPatch(t *testing.T) {
 			if err != nil {
 				t.Errorf("testcase[%d], unexpected error: %v", i, err)
 			} else if !apiequality.Semantic.DeepEqual(test.expected, out) {
-				t.Errorf("\n\ntestcase[%d]\nexpected:\n%s", i, diff.ObjectReflectDiff(test.expected, out))
+				t.Errorf("\n\ntestcase[%d]\nexpected:\n%s", i, cmp.Diff(test.expected, out))
 			}
 		}
 		if test.expectErr && err == nil {

test/e2e/apimachinery/custom_resource_definition.go

@@ -21,6 +21,7 @@ import (
 	"fmt"
 	"time"
 
+	"github.com/google/go-cmp/cmp"
 	"github.com/onsi/ginkgo/v2"
 
 	v1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
@@ -32,7 +33,6 @@ import (
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
 	"k8s.io/apimachinery/pkg/types"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/util/uuid"
 	"k8s.io/apimachinery/pkg/util/wait"
 	"k8s.io/apiserver/pkg/storage/names"
@@ -125,7 +125,7 @@ var _ = SIGDescribe("CustomResourceDefinition resources [Privileged:ClusterAdmin
 				framework.ExpectNotEqual(expected, nil)
 				if !equality.Semantic.DeepEqual(actual.Spec, expected.Spec) {
 					framework.Failf("Expected CustomResourceDefinition in list with name %s to match crd created with same name, but got different specs:\n%s",
-						actual.Name, diff.ObjectReflectDiff(expected.Spec, actual.Spec))
+						actual.Name, cmp.Diff(expected.Spec, actual.Spec))
 				}
 			}
 
@@ -169,7 +169,7 @@ var _ = SIGDescribe("CustomResourceDefinition resources [Privileged:ClusterAdmin
 				framework.ExpectNoError(err, "getting CustomResourceDefinition status")
 				status := unstructuredToCRD(u)
 				if !equality.Semantic.DeepEqual(status.Spec, crd.Spec) {
-					framework.Failf("Expected CustomResourceDefinition Spec to match status sub-resource Spec, but got:\n%s", diff.ObjectReflectDiff(status.Spec, crd.Spec))
+					framework.Failf("Expected CustomResourceDefinition Spec to match status sub-resource Spec, but got:\n%s", cmp.Diff(status.Spec, crd.Spec))
 				}
 				status.Status.Conditions = append(status.Status.Conditions, updateCondition)
 				updated, err = apiExtensionClient.ApiextensionsV1().CustomResourceDefinitions().UpdateStatus(ctx, status, metav1.UpdateOptions{})

test/e2e/common/node/node_lease.go

@@ -25,7 +25,6 @@ import (
 	v1 "k8s.io/api/core/v1"
 	apiequality "k8s.io/apimachinery/pkg/api/equality"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/util/wait"
 	clientset "k8s.io/client-go/kubernetes"
 	"k8s.io/kubernetes/test/e2e/framework"
@@ -33,6 +32,7 @@ import (
 	testutils "k8s.io/kubernetes/test/utils"
 	admissionapi "k8s.io/pod-security-admission/api"
 
+	"github.com/google/go-cmp/cmp"
 	"github.com/onsi/ginkgo/v2"
 	"github.com/onsi/gomega"
 )
@@ -159,7 +159,7 @@ var _ = SIGDescribe("NodeLease", func() {
 				if !apiequality.Semantic.DeepEqual(lastStatus, currentStatus) {
 					// heartbeat time changed, but there were relevant changes in the status, keep waiting
 					framework.Logf("node status heartbeat changed in %s (with other status changes), waiting for %s", currentHeartbeatTime.Sub(lastHeartbeatTime), leaseDuration)
-					framework.Logf("%s", diff.ObjectReflectDiff(lastStatus, currentStatus))
+					framework.Logf("%s", cmp.Diff(lastStatus, currentStatus))
 					lastHeartbeatTime = currentHeartbeatTime
 					lastObserved = currentObserved
 					lastStatus = currentStatus

test/e2e/instrumentation/core_events.go

@@ -24,12 +24,12 @@ import (
 	v1 "k8s.io/api/core/v1"
 	apiequality "k8s.io/apimachinery/pkg/api/equality"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/util/wait"
 	"k8s.io/kubernetes/test/e2e/framework"
 	"k8s.io/kubernetes/test/e2e/instrumentation/common"
 	admissionapi "k8s.io/pod-security-admission/api"
 
+	"github.com/google/go-cmp/cmp"
 	"github.com/onsi/ginkgo/v2"
 	"k8s.io/apimachinery/pkg/types"
 )
@@ -140,7 +140,7 @@ var _ = common.SIGDescribe("Events", func() {
 		event.ObjectMeta.ResourceVersion = ""
 		event.ObjectMeta.ManagedFields = nil
 		if !apiequality.Semantic.DeepEqual(testEvent, event) {
-			framework.Failf("test event wasn't properly updated: %v", diff.ObjectReflectDiff(testEvent, event))
+			framework.Failf("test event wasn't properly updated: %v", cmp.Diff(testEvent, event))
 		}
 
 		ginkgo.By("deleting the test event")

test/e2e/instrumentation/events.go

@@ -26,7 +26,6 @@ import (
 	eventsv1 "k8s.io/api/events/v1"
 	apiequality "k8s.io/apimachinery/pkg/api/equality"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/apimachinery/pkg/util/diff"
 	"k8s.io/apimachinery/pkg/util/strategicpatch"
 	corev1 "k8s.io/client-go/kubernetes/typed/core/v1"
 	typedeventsv1 "k8s.io/client-go/kubernetes/typed/events/v1"
@@ -34,6 +33,7 @@ import (
 	"k8s.io/kubernetes/test/e2e/instrumentation/common"
 	admissionapi "k8s.io/pod-security-admission/api"
 
+	"github.com/google/go-cmp/cmp"
 	"github.com/onsi/ginkgo/v2"
 	"k8s.io/apimachinery/pkg/types"
 )
@@ -160,7 +160,7 @@ var _ = common.SIGDescribe("Events API", func() {
 
 		testEvent.Series = eventSeries
 		if !apiequality.Semantic.DeepEqual(testEvent, event) {
-			framework.Failf("test event wasn't properly patched: %v", diff.ObjectReflectDiff(testEvent, event))
+			framework.Failf("test event wasn't properly patched: %v", cmp.Diff(testEvent, event))
 		}
 
 		ginkgo.By("updating the test event")
@@ -178,7 +178,7 @@ var _ = common.SIGDescribe("Events API", func() {
 		event.ObjectMeta.ResourceVersion = ""
 		event.ObjectMeta.ManagedFields = nil
 		if !apiequality.Semantic.DeepEqual(testEvent, event) {
-			framework.Failf("test event wasn't properly updated: %v", diff.ObjectReflectDiff(testEvent, event))
+			framework.Failf("test event wasn't properly updated: %v", cmp.Diff(testEvent, event))
 		}
 
 		ginkgo.By("deleting the test event")

test/images/agnhost/webhook/convert_test.go

@@ -22,6 +22,7 @@ import (
 	"reflect"
 	"testing"
 
+	"github.com/google/go-cmp/cmp"
 	fuzz "github.com/google/gofuzz"
 
 	v1 "k8s.io/api/admission/v1"
@@ -29,7 +30,6 @@ import (
 	"k8s.io/apimachinery/pkg/api/apitesting/fuzzer"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/serializer"
-	"k8s.io/apimachinery/pkg/util/diff"
 	admissionfuzzer "k8s.io/kubernetes/pkg/apis/admission/fuzzer"
 )
 
@@ -42,7 +42,7 @@ func TestConvertAdmissionRequestToV1(t *testing.T) {
 			converted := convertAdmissionRequestToV1(orig)
 			rt := convertAdmissionRequestToV1beta1(converted)
 			if !reflect.DeepEqual(orig, rt) {
-				t.Errorf("expected all request fields to be in converted object but found unaccounted for differences, diff:\n%s", diff.ObjectReflectDiff(orig, converted))
+				t.Errorf("expected all request fields to be in converted object but found unaccounted for differences, diff:\n%s", cmp.Diff(orig, converted))
 			}
 		})
 	}
@@ -57,7 +57,7 @@ func TestConvertAdmissionResponseToV1beta1(t *testing.T) {
 			converted := convertAdmissionResponseToV1beta1(orig)
 			rt := convertAdmissionResponseToV1(converted)
 			if !reflect.DeepEqual(orig, rt) {
-				t.Errorf("expected all fields to be in converted object but found unaccounted for differences, diff:\n%s", diff.ObjectReflectDiff(orig, converted))
+				t.Errorf("expected all fields to be in converted object but found unaccounted for differences, diff:\n%s", cmp.Diff(orig, converted))
 			}
 		})
 	}

test/utils/image/manifest_test.go

@@ -21,7 +21,7 @@ import (
 	"reflect"
 	"testing"
 
-	"k8s.io/apimachinery/pkg/util/diff"
+	"github.com/google/go-cmp/cmp"
 )
 
 func BenchmarkReplaceRegistryInImageURL(b *testing.B) {
@@ -177,6 +177,6 @@ func TestGetMappedImageConfigs(t *testing.T) {
 		"docker.io/source/repo:1.0": "quay.io/repo/for-test:e2e-10-docker-io-source-repo-1-0-72R4aXm7YnxQ4_ek",
 	}
 	if !reflect.DeepEqual(expected, actual) {
-		t.Fatal(diff.ObjectReflectDiff(expected, actual))
+		t.Fatal(cmp.Diff(expected, actual))
 	}
 }