Implement RuntimeClass support for the Kubelet & CRI

pkg/kubelet/runtimeclass/runtimeclass_manager_test.go

@@ -0,0 +1,61 @@
+/*
+Copyright 2018 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package runtimeclass_test
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"k8s.io/kubernetes/pkg/kubelet/runtimeclass"
+	rctest "k8s.io/kubernetes/pkg/kubelet/runtimeclass/testing"
+	"k8s.io/utils/pointer"
+)
+
+func TestLookupRuntimeHandler(t *testing.T) {
+	tests := []struct {
+		rcn         *string
+		expected    string
+		expectError bool
+	}{
+		{rcn: nil, expected: ""},
+		{rcn: pointer.StringPtr(""), expected: ""},
+		{rcn: pointer.StringPtr(rctest.EmptyRuntimeClass), expected: ""},
+		{rcn: pointer.StringPtr(rctest.SandboxRuntimeClass), expected: "kata-containers"},
+		{rcn: pointer.StringPtr(rctest.InvalidRuntimeClass), expectError: true},
+		{rcn: pointer.StringPtr("phantom"), expectError: true},
+	}
+
+	manager := runtimeclass.NewManager(rctest.NewPopulatedDynamicClient())
+	defer rctest.StartManagerSync(t, manager)()
+
+	for _, test := range tests {
+		tname := "nil"
+		if test.rcn != nil {
+			tname = *test.rcn
+		}
+		t.Run(fmt.Sprintf("%q->%q(err:%v)", tname, test.expected, test.expectError), func(t *testing.T) {
+			handler, err := manager.LookupRuntimeHandler(test.rcn)
+			if test.expectError {
+				assert.Error(t, err, "handler=%q", handler)
+			} else {
+				assert.NoError(t, err)
+				assert.Equal(t, test.expected, handler)
+			}
+		})
+	}
+}