/*
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Copyright 2019 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package testing
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import (
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"testing"
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"github.com/stretchr/testify/assert"
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"k8s.io/apimachinery/pkg/api/meta"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/schema"
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)
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func TestOriginalObjectCaptured(t *testing.T) {
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// this ReactionFunc sets the resources ClusterName
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const testClusterName = "some-value"
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reactors := []ReactionFunc{
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func(action Action) (bool, runtime.Object, error) {
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createAction := action.(CreateActionImpl)
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accessor, err := meta.Accessor(createAction.Object)
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if err != nil {
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return false, nil, err
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}
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// set any field on the resource
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accessor.SetClusterName(testClusterName)
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return true, createAction.Object, nil
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},
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}
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// create a new Fake with the test reactors
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f := &Fake{}
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for _, r := range reactors {
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f.AddReactor("", "", r)
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}
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// construct a test resource
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testResource := schema.GroupVersionResource{Group: "", Version: "test_version", Resource: "test_kind"}
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testObj := getArbitraryResource(testResource, "test_name", "test_namespace")
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// create a fake CreateAction
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action := CreateActionImpl{
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Object: testObj,
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}
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// execute the reaction chain
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ret, err := f.Invokes(action, nil)
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assert.NoError(t, err, "running Invokes failed")
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// obtain a metadata accessor for the returned resource
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accessor, err := meta.Accessor(ret)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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// validate that the returned resource was modified by the ReactionFunc
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if accessor.GetClusterName() != testClusterName {
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t.Errorf("expected resource returned by Invokes to be modified by the ReactionFunc")
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}
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// verify one action was performed
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if len(f.actions) != 1 {
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t.Errorf("expected 1 action to be executed")
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t.FailNow()
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}
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// check to ensure the recorded action has not been modified by the chain
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createAction := f.actions[0].(CreateActionImpl)
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accessor, err = meta.Accessor(createAction.Object)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if accessor.GetClusterName() != "" {
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t.Errorf("expected Action recorded to not be modified by ReactionFunc but it was")
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}
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}
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func TestReactorChangesPersisted(t *testing.T) {
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// this ReactionFunc sets the resources ClusterName
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const testClusterName = "some-value"
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reactors := []ReactionFunc{
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func(action Action) (bool, runtime.Object, error) {
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createAction := action.(CreateActionImpl)
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accessor, err := meta.Accessor(createAction.Object)
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if err != nil {
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return false, nil, err
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}
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// set any field on the resource
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accessor.SetClusterName(testClusterName)
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return false, createAction.Object, nil
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},
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func(action Action) (bool, runtime.Object, error) {
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createAction := action.(CreateActionImpl)
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accessor, err := meta.Accessor(createAction.Object)
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if err != nil {
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return false, nil, err
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}
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// ensure the clusterName is set to testClusterName already
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if accessor.GetClusterName() != testClusterName {
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t.Errorf("expected resource passed to second reactor to be modified by first reactor")
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}
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return true, createAction.Object, nil
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},
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}
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// create a new Fake with the test reactors
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f := &Fake{}
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for _, r := range reactors {
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f.AddReactor("", "", r)
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}
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// construct a test resource
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testResource := schema.GroupVersionResource{Group: "", Version: "test_version", Resource: "test_kind"}
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testObj := getArbitraryResource(testResource, "test_name", "test_namespace")
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// create a fake CreateAction
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action := CreateActionImpl{
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Object: testObj,
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}
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// execute the reaction chain
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ret, err := f.Invokes(action, nil)
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assert.NoError(t, err, "running Invokes failed")
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// obtain a metadata accessor for the returned resource
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accessor, err := meta.Accessor(ret)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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// validate that the returned resource was modified by the ReactionFunc
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if accessor.GetClusterName() != testClusterName {
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t.Errorf("expected resource returned by Invokes to be modified by the ReactionFunc")
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}
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// verify one action was performed
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if len(f.actions) != 1 {
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t.Errorf("expected 1 action to be executed")
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t.FailNow()
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}
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// check to ensure the recorded action has not been modified by the chain
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createAction := f.actions[0].(CreateActionImpl)
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accessor, err = meta.Accessor(createAction.Object)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if accessor.GetClusterName() != "" {
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t.Errorf("expected Action recorded to not be modified by ReactionFunc but it was")
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}
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}
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