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/*
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 dynamiclister_test
import (
"reflect"
"testing"
"github.com/google/go-cmp/cmp"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/client-go/dynamic/dynamiclister"
"k8s.io/client-go/tools/cache"
)
func TestNamespaceGetMethod(t *testing.T) {
tests := []struct {
name string
existingObjects []runtime.Object
namespaceToSync string
gvrToSync schema.GroupVersionResource
objectToGet string
expectedObject *unstructured.Unstructured
expectError bool
}{
{
name: "scenario 1: gets name-foo1 resource from the indexer from ns-foo namespace",
existingObjects: []runtime.Object{
newUnstructured("group/version", "TheKind", "ns-foo", "name-foo"),
newUnstructured("group/version", "TheKind", "ns-foo", "name-foo1"),
newUnstructured("group/version", "TheKind", "ns-bar", "name-bar"),
},
namespaceToSync: "ns-foo",
gvrToSync: schema.GroupVersionResource{Group: "group", Version: "version", Resource: "TheKinds"},
objectToGet: "name-foo1",
expectedObject: newUnstructured("group/version", "TheKind", "ns-foo", "name-foo1"),
},
{
name: "scenario 2: gets name-foo-non-existing resource from the indexer from ns-foo namespace",
existingObjects: []runtime.Object{
newUnstructured("group/version", "TheKind", "ns-foo", "name-foo"),
newUnstructured("group/version", "TheKind", "ns-foo", "name-foo1"),
newUnstructured("group/version", "TheKind", "ns-bar", "name-bar"),
},
namespaceToSync: "ns-foo",
gvrToSync: schema.GroupVersionResource{Group: "group", Version: "version", Resource: "TheKinds"},
objectToGet: "name-foo-non-existing",
expectError: true,
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
// test data
indexer := cache.NewIndexer(cache.MetaNamespaceKeyFunc, cache.Indexers{})
for _, obj := range test.existingObjects {
err := indexer.Add(obj)
if err != nil {
t.Fatal(err)
}
}
// act
target := dynamiclister.New(indexer, test.gvrToSync).Namespace(test.namespaceToSync)
actualObject, err := target.Get(test.objectToGet)
// validate
if test.expectError {
if err == nil {
t.Fatal("expected to get an error but non was returned")
}
return
}
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(test.expectedObject, actualObject) {
t.Fatalf("unexpected object has been returned expected = %v actual = %v, diff = %v", test.expectedObject, actualObject, cmp.Diff(test.expectedObject, actualObject))
}
})
}
}
func TestNamespaceListMethod(t *testing.T) {
// test data
objs := []runtime.Object{
newUnstructured("group/version", "TheKind", "ns-foo", "name-foo"),
newUnstructured("group/version", "TheKind", "ns-foo", "name-foo1"),
newUnstructured("group/version", "TheKind", "ns-bar", "name-bar"),
}
indexer := cache.NewIndexer(cache.MetaNamespaceKeyFunc, cache.Indexers{})
for _, obj := range objs {
err := indexer.Add(obj)
if err != nil {
t.Fatal(err)
}
}
expectedOutput := []*unstructured.Unstructured{
newUnstructured("group/version", "TheKind", "ns-foo", "name-foo"),
newUnstructured("group/version", "TheKind", "ns-foo", "name-foo1"),
}
namespaceToList := "ns-foo"
// act
target := dynamiclister.New(indexer, schema.GroupVersionResource{Group: "group", Version: "version", Resource: "TheKinds"}).Namespace(namespaceToList)
actualOutput, err := target.List(labels.Everything())
// validate
if err != nil {
t.Fatal(err)
}
assertListOrDie(expectedOutput, actualOutput, t)
}
func TestListerGetMethod(t *testing.T) {
tests := []struct {
name string
existingObjects []runtime.Object
namespaceToSync string
gvrToSync schema.GroupVersionResource
objectToGet string
expectedObject *unstructured.Unstructured
expectError bool
}{
{
name: "scenario 1: gets name-foo1 resource from the indexer",
existingObjects: []runtime.Object{
newUnstructured("group/version", "TheKind", "ns-foo", "name-foo"),
newUnstructured("group/version", "TheKind", "", "name-foo1"),
newUnstructured("group/version", "TheKind", "ns-bar", "name-bar"),
},
namespaceToSync: "",
gvrToSync: schema.GroupVersionResource{Group: "group", Version: "version", Resource: "TheKinds"},
objectToGet: "name-foo1",
expectedObject: newUnstructured("group/version", "TheKind", "", "name-foo1"),
},
{
name: "scenario 2: doesn't get name-foo resource from the indexer from ns-foo namespace",
existingObjects: []runtime.Object{
newUnstructured("group/version", "TheKind", "ns-foo", "name-foo"),
newUnstructured("group/version", "TheKind", "ns-foo", "name-foo1"),
newUnstructured("group/version", "TheKind", "ns-bar", "name-bar"),
},
namespaceToSync: "ns-foo",
gvrToSync: schema.GroupVersionResource{Group: "group", Version: "version", Resource: "TheKinds"},
objectToGet: "name-foo",
expectError: true,
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
// test data
indexer := cache.NewIndexer(cache.MetaNamespaceKeyFunc, cache.Indexers{})
for _, obj := range test.existingObjects {
err := indexer.Add(obj)
if err != nil {
t.Fatal(err)
}
}
// act
target := dynamiclister.New(indexer, test.gvrToSync)
actualObject, err := target.Get(test.objectToGet)
// validate
if test.expectError {
if err == nil {
t.Fatal("expected to get an error but non was returned")
}
return
}
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(test.expectedObject, actualObject) {
t.Fatalf("unexpected object has been returned expected = %v actual = %v, diff = %v", test.expectedObject, actualObject, cmp.Diff(test.expectedObject, actualObject))
}
})
}
}
func TestListerListMethod(t *testing.T) {
// test data
objs := []runtime.Object{
newUnstructured("group/version", "TheKind", "ns-foo", "name-foo"),
newUnstructured("group/version", "TheKind", "ns-foo", "name-bar"),
}
indexer := cache.NewIndexer(cache.MetaNamespaceKeyFunc, cache.Indexers{})
for _, obj := range objs {
err := indexer.Add(obj)
if err != nil {
t.Fatal(err)
}
}
expectedOutput := []*unstructured.Unstructured{
newUnstructured("group/version", "TheKind", "ns-foo", "name-foo"),
newUnstructured("group/version", "TheKind", "ns-foo", "name-bar"),
}
// act
target := dynamiclister.New(indexer, schema.GroupVersionResource{Group: "group", Version: "version", Resource: "TheKinds"})
actualOutput, err := target.List(labels.Everything())
// validate
if err != nil {
t.Fatal(err)
}
assertListOrDie(expectedOutput, actualOutput, t)
}
func newUnstructured(apiVersion, kind, namespace, name string) *unstructured.Unstructured {
return &unstructured.Unstructured{
Object: map[string]interface{}{
"apiVersion": apiVersion,
"kind": kind,
"metadata": map[string]interface{}{
"namespace": namespace,
"name": name,
},
},
}
}
func assertListOrDie(expected, actual []*unstructured.Unstructured, t *testing.T) {
if len(actual) != len(expected) {
t.Fatalf("unexpected number of items returned, expected = %d, actual = %d", len(expected), len(actual))
}
for _, expectedObject := range expected {
found := false
for _, actualObject := range actual {
if actualObject.GetName() == expectedObject.GetName() {
if !reflect.DeepEqual(expectedObject, actualObject) {
t.Fatalf("unexpected object has been returned expected = %v actual = %v, diff = %v", expectedObject, actualObject, cmp.Diff(expectedObject, actualObject))
}
found = true
}
}
if !found {
t.Fatalf("the resource with the name = %s was not found in the returned output", expectedObject.GetName())
}
}
}
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