Merge pull request #73601 from munnerz/reactors-shared-copy

Use a single deep copied object between all reactors in fake client
This commit is contained in:
Kubernetes Prow Robot 2019-02-19 18:38:32 -08:00 committed by GitHub
commit a782adfb9d
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 179 additions and 7 deletions

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@ -34,7 +34,10 @@ go_library(
go_test(
name = "go_default_test",
srcs = ["fixture_test.go"],
srcs = [
"fake_test.go",
"fixture_test.go",
],
embed = [":go_default_library"],
deps = [
"//staging/src/k8s.io/apimachinery/pkg/api/meta:go_default_library",

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@ -131,13 +131,14 @@ func (c *Fake) Invokes(action Action, defaultReturnObj runtime.Object) (runtime.
c.Lock()
defer c.Unlock()
actionCopy := action.DeepCopy()
c.actions = append(c.actions, action.DeepCopy())
for _, reactor := range c.ReactionChain {
if !reactor.Handles(action) {
if !reactor.Handles(actionCopy) {
continue
}
handled, ret, err := reactor.React(action.DeepCopy())
handled, ret, err := reactor.React(actionCopy)
if !handled {
continue
}
@ -154,13 +155,14 @@ func (c *Fake) InvokesWatch(action Action) (watch.Interface, error) {
c.Lock()
defer c.Unlock()
actionCopy := action.DeepCopy()
c.actions = append(c.actions, action.DeepCopy())
for _, reactor := range c.WatchReactionChain {
if !reactor.Handles(action) {
if !reactor.Handles(actionCopy) {
continue
}
handled, ret, err := reactor.React(action.DeepCopy())
handled, ret, err := reactor.React(actionCopy)
if !handled {
continue
}
@ -177,13 +179,14 @@ func (c *Fake) InvokesProxy(action Action) restclient.ResponseWrapper {
c.Lock()
defer c.Unlock()
actionCopy := action.DeepCopy()
c.actions = append(c.actions, action.DeepCopy())
for _, reactor := range c.ProxyReactionChain {
if !reactor.Handles(action) {
if !reactor.Handles(actionCopy) {
continue
}
handled, ret, err := reactor.React(action.DeepCopy())
handled, ret, err := reactor.React(actionCopy)
if !handled || err != nil {
continue
}

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@ -0,0 +1,166 @@
/*
Copyright 2019 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 testing
import (
"testing"
"github.com/stretchr/testify/assert"
"k8s.io/apimachinery/pkg/api/meta"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
)
func TestOriginalObjectCaptured(t *testing.T) {
// this ReactionFunc sets the resources ClusterName
const testClusterName = "some-value"
reactors := []ReactionFunc{
func(action Action) (bool, runtime.Object, error) {
createAction := action.(CreateActionImpl)
accessor, err := meta.Accessor(createAction.Object)
if err != nil {
return false, nil, err
}
// set any field on the resource
accessor.SetClusterName(testClusterName)
return true, createAction.Object, nil
},
}
// create a new Fake with the test reactors
f := &Fake{}
for _, r := range reactors {
f.AddReactor("", "", r)
}
// construct a test resource
testResource := schema.GroupVersionResource{Group: "", Version: "test_version", Resource: "test_kind"}
testObj := getArbitraryResource(testResource, "test_name", "test_namespace")
// create a fake CreateAction
action := CreateActionImpl{
Object: testObj,
}
// execute the reaction chain
ret, err := f.Invokes(action, nil)
assert.NoError(t, err, "running Invokes failed")
// obtain a metadata accessor for the returned resource
accessor, err := meta.Accessor(ret)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
// validate that the returned resource was modified by the ReactionFunc
if accessor.GetClusterName() != testClusterName {
t.Errorf("expected resource returned by Invokes to be modified by the ReactionFunc")
}
// verify one action was performed
if len(f.actions) != 1 {
t.Errorf("expected 1 action to be executed")
t.FailNow()
}
// check to ensure the recorded action has not been modified by the chain
createAction := f.actions[0].(CreateActionImpl)
accessor, err = meta.Accessor(createAction.Object)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if accessor.GetClusterName() != "" {
t.Errorf("expected Action recorded to not be modified by ReactionFunc but it was")
}
}
func TestReactorChangesPersisted(t *testing.T) {
// this ReactionFunc sets the resources ClusterName
const testClusterName = "some-value"
reactors := []ReactionFunc{
func(action Action) (bool, runtime.Object, error) {
createAction := action.(CreateActionImpl)
accessor, err := meta.Accessor(createAction.Object)
if err != nil {
return false, nil, err
}
// set any field on the resource
accessor.SetClusterName(testClusterName)
return false, createAction.Object, nil
},
func(action Action) (bool, runtime.Object, error) {
createAction := action.(CreateActionImpl)
accessor, err := meta.Accessor(createAction.Object)
if err != nil {
return false, nil, err
}
// ensure the clusterName is set to testClusterName already
if accessor.GetClusterName() != testClusterName {
t.Errorf("expected resource passed to second reactor to be modified by first reactor")
}
return true, createAction.Object, nil
},
}
// create a new Fake with the test reactors
f := &Fake{}
for _, r := range reactors {
f.AddReactor("", "", r)
}
// construct a test resource
testResource := schema.GroupVersionResource{Group: "", Version: "test_version", Resource: "test_kind"}
testObj := getArbitraryResource(testResource, "test_name", "test_namespace")
// create a fake CreateAction
action := CreateActionImpl{
Object: testObj,
}
// execute the reaction chain
ret, err := f.Invokes(action, nil)
assert.NoError(t, err, "running Invokes failed")
// obtain a metadata accessor for the returned resource
accessor, err := meta.Accessor(ret)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
// validate that the returned resource was modified by the ReactionFunc
if accessor.GetClusterName() != testClusterName {
t.Errorf("expected resource returned by Invokes to be modified by the ReactionFunc")
}
// verify one action was performed
if len(f.actions) != 1 {
t.Errorf("expected 1 action to be executed")
t.FailNow()
}
// check to ensure the recorded action has not been modified by the chain
createAction := f.actions[0].(CreateActionImpl)
accessor, err = meta.Accessor(createAction.Object)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
if accessor.GetClusterName() != "" {
t.Errorf("expected Action recorded to not be modified by ReactionFunc but it was")
}
}