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| 1 | +/* |
| 2 | +Copyright 2022 The Kubernetes Authors. |
| 3 | +
|
| 4 | +Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | +you may not use this file except in compliance with the License. |
| 6 | +You may obtain a copy of the License at |
| 7 | +
|
| 8 | + http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | +
|
| 10 | +Unless required by applicable law or agreed to in writing, software |
| 11 | +distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | +See the License for the specific language governing permissions and |
| 14 | +limitations under the License. |
| 15 | +*/ |
| 16 | + |
| 17 | +package internal |
| 18 | + |
| 19 | +import ( |
| 20 | + "fmt" |
| 21 | + |
| 22 | + . "github.com/onsi/ginkgo" |
| 23 | + . "github.com/onsi/gomega" |
| 24 | + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" |
| 25 | + "k8s.io/apimachinery/pkg/runtime" |
| 26 | + "k8s.io/apimachinery/pkg/runtime/schema" |
| 27 | + "k8s.io/apimachinery/pkg/watch" |
| 28 | +) |
| 29 | + |
| 30 | +// Test that gvkFixupWatcher behaves like watch.FakeWatcher |
| 31 | +// and that it overrides the GVK. |
| 32 | +// These tests are adapted from the watch.FakeWatcher tests in: |
| 33 | +// https://github.com/kubernetes/kubernetes/blob/adbda068c1808fcc8a64a94269e0766b5c46ec41/staging/src/k8s.io/apimachinery/pkg/watch/watch_test.go#L33-L78 |
| 34 | +var _ = Describe("gvkFixupWatcher", func() { |
| 35 | + It("behaves like watch.FakeWatcher", func() { |
| 36 | + newTestType := func(name string) runtime.Object { |
| 37 | + return &metav1.PartialObjectMetadata{ |
| 38 | + ObjectMeta: metav1.ObjectMeta{ |
| 39 | + Name: name, |
| 40 | + }, |
| 41 | + } |
| 42 | + } |
| 43 | + |
| 44 | + f := watch.NewFake() |
| 45 | + // This is the GVK which we expect the wrapper to set on all the events |
| 46 | + expectedGVK := schema.GroupVersionKind{ |
| 47 | + Group: "testgroup", |
| 48 | + Version: "v1test2", |
| 49 | + Kind: "TestKind", |
| 50 | + } |
| 51 | + gvkfw := newGVKFixupWatcher(expectedGVK, f) |
| 52 | + |
| 53 | + table := []struct { |
| 54 | + t watch.EventType |
| 55 | + s runtime.Object |
| 56 | + }{ |
| 57 | + {watch.Added, newTestType("foo")}, |
| 58 | + {watch.Modified, newTestType("qux")}, |
| 59 | + {watch.Modified, newTestType("bar")}, |
| 60 | + {watch.Deleted, newTestType("bar")}, |
| 61 | + {watch.Error, newTestType("error: blah")}, |
| 62 | + } |
| 63 | + |
| 64 | + consumer := func(w watch.Interface) { |
| 65 | + for _, expect := range table { |
| 66 | + By(fmt.Sprintf("Fixing up watch.EventType: %v and passing it on", expect.t)) |
| 67 | + got, ok := <-w.ResultChan() |
| 68 | + Expect(ok).To(BeTrue(), "closed early") |
| 69 | + Expect(expect.t).To(Equal(got.Type), "unexpected Event.Type or out-of-order Event") |
| 70 | + Expect(got.Object).To(BeAssignableToTypeOf(&metav1.PartialObjectMetadata{}), "unexpected Event.Object type") |
| 71 | + a := got.Object.(*metav1.PartialObjectMetadata) |
| 72 | + Expect(got.Object.GetObjectKind().GroupVersionKind()).To(Equal(expectedGVK), "GVK was not fixed up") |
| 73 | + expected := expect.s.DeepCopyObject() |
| 74 | + expected.GetObjectKind().SetGroupVersionKind(schema.GroupVersionKind{}) |
| 75 | + actual := a.DeepCopyObject() |
| 76 | + actual.GetObjectKind().SetGroupVersionKind(schema.GroupVersionKind{}) |
| 77 | + Expect(actual).To(Equal(expected), "unexpected change to the Object") |
| 78 | + } |
| 79 | + Eventually(w.ResultChan()).Should(BeClosed()) |
| 80 | + } |
| 81 | + |
| 82 | + sender := func() { |
| 83 | + f.Add(newTestType("foo")) |
| 84 | + f.Action(watch.Modified, newTestType("qux")) |
| 85 | + f.Modify(newTestType("bar")) |
| 86 | + f.Delete(newTestType("bar")) |
| 87 | + f.Error(newTestType("error: blah")) |
| 88 | + f.Stop() |
| 89 | + } |
| 90 | + |
| 91 | + go sender() |
| 92 | + consumer(gvkfw) |
| 93 | + }) |
| 94 | +}) |
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