test: remove RetroactiveDefaultStorageClass feature gate

Since the feature is GA and locked to true, tests can no longer set it
to false. Cleaning up by removing all references to this feature gate
from tests.

Feature gate will be removed in v1.29.

pkg/apis/core/validation/validation_test.go

@@ -2424,7 +2424,6 @@ func TestValidatePersistentVolumeClaimUpdate(t *testing.T) {
 		oldClaim                   *core.PersistentVolumeClaim
 		newClaim                   *core.PersistentVolumeClaim
 		enableRecoverFromExpansion bool
-		enableRetroactiveDefaultStorageClass bool
 	}{
 		"valid-update-volumeName-only": {
 			isExpectedFailure: false,
@@ -2539,64 +2538,31 @@ func TestValidatePersistentVolumeClaimUpdate(t *testing.T) {
 			isExpectedFailure: false,
 			oldClaim:          validClaimStorageClassNil,
 			newClaim:          validClaimStorageClassInSpec,
-			enableRetroactiveDefaultStorageClass: true,
-			// Feature enabled - change from nil sc name is valid if there is no beta annotation.
-		},
-		"invalid-upgrade-nil-storage-class-spec-to-spec": {
-			isExpectedFailure:                    true,
-			oldClaim:                             validClaimStorageClassNil,
-			newClaim:                             validClaimStorageClassInSpec,
-			enableRetroactiveDefaultStorageClass: false,
-			// Feature disabled - change from nil sc name is invalid if there is no beta annotation.
 		},
 		"invalid-upgrade-not-nil-storage-class-spec-to-spec": {
 			isExpectedFailure: true,
 			oldClaim:          validClaimStorageClassInSpec,
 			newClaim:          validClaimStorageClassInSpecChanged,
-			enableRetroactiveDefaultStorageClass: true,
-			// Feature enablement must not allow non nil value change.
 		},
 		"invalid-upgrade-to-nil-storage-class-spec-to-spec": {
 			isExpectedFailure: true,
 			oldClaim:          validClaimStorageClassInSpec,
 			newClaim:          validClaimStorageClassNil,
-			enableRetroactiveDefaultStorageClass: true,
-			// Feature enablement must not allow change to nil value change.
-		},
-		"valid-upgrade-storage-class-annotation-and-nil-spec-to-spec": {
-			isExpectedFailure:                    false,
-			oldClaim:                             validClaimStorageClassInAnnotationAndNilInSpec,
-			newClaim:                             validClaimStorageClassInAnnotationAndSpec,
-			enableRetroactiveDefaultStorageClass: false,
-			// Change from nil sc name is valid if annotations match.
 		},
 		"valid-upgrade-storage-class-annotation-and-nil-spec-to-spec-retro": {
 			isExpectedFailure: false,
 			oldClaim:          validClaimStorageClassInAnnotationAndNilInSpec,
 			newClaim:          validClaimStorageClassInAnnotationAndSpec,
-			enableRetroactiveDefaultStorageClass: true,
-			// Change from nil sc name is valid if annotations match, feature enablement must not break this old behavior.
-		},
-		"invalid-upgrade-storage-class-annotation-and-spec-to-spec": {
-			isExpectedFailure:                    true,
-			oldClaim:                             validClaimStorageClassInAnnotationAndSpec,
-			newClaim:                             validClaimStorageClassInSpecChanged,
-			enableRetroactiveDefaultStorageClass: false,
-			// Change from non nil sc name is invalid if annotations don't match.
 		},
 		"invalid-upgrade-storage-class-annotation-and-spec-to-spec-retro": {
 			isExpectedFailure: true,
 			oldClaim:          validClaimStorageClassInAnnotationAndSpec,
 			newClaim:          validClaimStorageClassInSpecChanged,
-			enableRetroactiveDefaultStorageClass: true,
-			// Change from non nil sc name is invalid if annotations don't match, feature enablement must not break this old behavior.
 		},
 		"invalid-upgrade-storage-class-annotation-and-no-spec": {
 			isExpectedFailure: true,
 			oldClaim:          validClaimStorageClassInAnnotationAndNilInSpec,
 			newClaim:          validClaimStorageClassInSpecChanged,
-			enableRetroactiveDefaultStorageClass: true,
-			// Change from nil sc name is invalid if annotations don't match, feature enablement must not break this old behavior.
 		},
 		"invalid-upgrade-storage-class-annotation-to-spec": {
 			isExpectedFailure: true,
@@ -2662,7 +2628,6 @@ func TestValidatePersistentVolumeClaimUpdate(t *testing.T) {
 	for name, scenario := range scenarios {
 		t.Run(name, func(t *testing.T) {
 			defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.RecoverVolumeExpansionFailure, scenario.enableRecoverFromExpansion)()
-			defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.RetroactiveDefaultStorageClass, scenario.enableRetroactiveDefaultStorageClass)()
 			scenario.oldClaim.ResourceVersion = "1"
 			scenario.newClaim.ResourceVersion = "1"
 			opts := ValidationOptionsForPersistentVolumeClaim(scenario.newClaim, scenario.oldClaim)
@@ -2689,7 +2654,6 @@ func TestValidationOptionsForPersistentVolumeClaim(t *testing.T) {
 			expectValidationOpts: PersistentVolumeClaimSpecValidationOptions{
 				AllowReadWriteOncePod:             true,
 				EnableRecoverFromExpansionFailure: false,
-				EnableRetroactiveDefaultStorageClass: true,
 			},
 		},
 		"rwop allowed because feature enabled": {
@@ -2698,7 +2662,6 @@ func TestValidationOptionsForPersistentVolumeClaim(t *testing.T) {
 			expectValidationOpts: PersistentVolumeClaimSpecValidationOptions{
 				AllowReadWriteOncePod:             true,
 				EnableRecoverFromExpansionFailure: false,
-				EnableRetroactiveDefaultStorageClass: true,
 			},
 		},
 		"rwop not allowed because not used and feature disabled": {
@@ -2707,7 +2670,6 @@ func TestValidationOptionsForPersistentVolumeClaim(t *testing.T) {
 			expectValidationOpts: PersistentVolumeClaimSpecValidationOptions{
 				AllowReadWriteOncePod:             false,
 				EnableRecoverFromExpansionFailure: false,
-				EnableRetroactiveDefaultStorageClass: true,
 			},
 		},
 		"rwop allowed because used and feature enabled": {
@@ -2716,7 +2678,6 @@ func TestValidationOptionsForPersistentVolumeClaim(t *testing.T) {
 			expectValidationOpts: PersistentVolumeClaimSpecValidationOptions{
 				AllowReadWriteOncePod:             true,
 				EnableRecoverFromExpansionFailure: false,
-				EnableRetroactiveDefaultStorageClass: true,
 			},
 		},
 		"rwop allowed because used and feature disabled": {
@@ -2725,7 +2686,6 @@ func TestValidationOptionsForPersistentVolumeClaim(t *testing.T) {
 			expectValidationOpts: PersistentVolumeClaimSpecValidationOptions{
 				AllowReadWriteOncePod:             true,
 				EnableRecoverFromExpansionFailure: false,
-				EnableRetroactiveDefaultStorageClass: true,
 			},
 		},
 	}

pkg/controller/volume/persistentvolume/pv_controller_test.go

@@ -754,8 +754,6 @@ func TestModifyDeletionFinalizers(t *testing.T) {
 }
 
 func TestRetroactiveStorageClassAssignment(t *testing.T) {
-	// Enable RetroactiveDefaultStorageClass feature gate.
-	defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.RetroactiveDefaultStorageClass, true)()
 	tests := []struct {
 		storageClasses []*storagev1.StorageClass
 		tests          []controllerTest

test/integration/volume/persistent_volumes_test.go

@@ -19,9 +19,6 @@ package volume
 import (
 	"context"
 	"fmt"
-	utilfeature "k8s.io/apiserver/pkg/util/feature"
-	featuregatetesting "k8s.io/component-base/featuregate/testing"
-	"k8s.io/kubernetes/pkg/features"
 	"math/rand"
 	"os"
 	"strconv"
@@ -1045,7 +1042,6 @@ func TestPersistentVolumeMultiPVsDiffAccessModes(t *testing.T) {
 // assignment and binding of PVCs with storage class name set to nil or "" with
 // and without presence of a default SC.
 func TestRetroactiveStorageClassAssignment(t *testing.T) {
-	defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.RetroactiveDefaultStorageClass, true)()
 	s := kubeapiservertesting.StartTestServerOrDie(t, nil, []string{"--disable-admission-plugins=DefaultStorageClass"}, framework.SharedEtcd())
 	defer s.TearDownFn()
 	namespaceName := "retro-pvc-sc"