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| 1 | +/* |
| 2 | +Copyright 2024. |
| 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 namespaces |
| 18 | + |
| 19 | +import ( |
| 20 | + "context" |
| 21 | + "errors" |
| 22 | + "testing" |
| 23 | + |
| 24 | + . "github.com/onsi/ginkgo/v2" |
| 25 | + . "github.com/onsi/gomega" |
| 26 | + corev1 "k8s.io/api/core/v1" |
| 27 | + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" |
| 28 | + "k8s.io/apimachinery/pkg/runtime" |
| 29 | + "sigs.k8s.io/controller-runtime/pkg/client" |
| 30 | + "sigs.k8s.io/controller-runtime/pkg/client/fake" |
| 31 | +) |
| 32 | + |
| 33 | +func TestNamespaceRepository(t *testing.T) { |
| 34 | + RegisterFailHandler(Fail) |
| 35 | + RunSpecs(t, "NamespaceRepository Suite") |
| 36 | +} |
| 37 | + |
| 38 | +var _ = Describe("Namespaces", Ordered, func() { |
| 39 | + var ( |
| 40 | + scheme *runtime.Scheme |
| 41 | + fakeClient client.Client |
| 42 | + namespaceRepo *NamespaceRepository |
| 43 | + ctx context.Context |
| 44 | + ) |
| 45 | + BeforeAll(func() { |
| 46 | + ctx = context.Background() |
| 47 | + scheme = runtime.NewScheme() |
| 48 | + Expect(corev1.AddToScheme(scheme)).To(Succeed()) |
| 49 | + }) |
| 50 | + Context("with no existing Namespaces", func() { |
| 51 | + BeforeEach(func() { |
| 52 | + fakeClient = fake.NewClientBuilder().WithScheme(scheme).Build() |
| 53 | + namespaceRepo = NewNamespaceRepository(fakeClient) |
| 54 | + |
| 55 | + }) |
| 56 | + It("should return an empty list of Namespaces", func() { |
| 57 | + namespaces, err := namespaceRepo.GetNamespaces(ctx) |
| 58 | + Expect(err).NotTo(HaveOccurred()) |
| 59 | + Expect(namespaces).To(BeEmpty()) |
| 60 | + }) |
| 61 | + }) |
| 62 | + Context("with existing Namespaces", func() { |
| 63 | + BeforeEach(func() { |
| 64 | + ns1 := &corev1.Namespace{ObjectMeta: metav1.ObjectMeta{Name: "test-ns-1"}} |
| 65 | + ns2 := &corev1.Namespace{ObjectMeta: metav1.ObjectMeta{Name: "test-ns-2"}} |
| 66 | + |
| 67 | + fakeClient = fake.NewClientBuilder().WithScheme(scheme).WithObjects(ns1, ns2).Build() |
| 68 | + namespaceRepo = NewNamespaceRepository(fakeClient) |
| 69 | + |
| 70 | + }) |
| 71 | + It("should return all namespaces", func() { |
| 72 | + namespaces, err := namespaceRepo.GetNamespaces(ctx) |
| 73 | + Expect(err).NotTo(HaveOccurred()) |
| 74 | + Expect(namespaces).To(HaveLen(2)) |
| 75 | + Expect(namespaces[0].Name).To(Equal("test-ns-1")) |
| 76 | + Expect(namespaces[1].Name).To(Equal("test-ns-2")) |
| 77 | + }) |
| 78 | + }) |
| 79 | + Context("when client.List returns an error", func() { |
| 80 | + BeforeEach(func() { |
| 81 | + fakeClient := fake.NewClientBuilder().WithScheme(scheme).Build() |
| 82 | + errorClient := &erroringClient{Client: fakeClient} |
| 83 | + namespaceRepo = NewNamespaceRepository(errorClient) |
| 84 | + }) |
| 85 | + |
| 86 | + It("should return an error", func() { |
| 87 | + namespaces, err := namespaceRepo.GetNamespaces(ctx) |
| 88 | + Expect(err).To(HaveOccurred()) |
| 89 | + var mockErr *MockError |
| 90 | + Expect(errors.As(err, &mockErr)).To(BeTrue()) |
| 91 | + Expect(namespaces).To(BeNil()) |
| 92 | + }) |
| 93 | + }) |
| 94 | +}) |
| 95 | + |
| 96 | +// Define a wrapper client that forces an error on List() method of client |
| 97 | +type erroringClient struct { |
| 98 | + client.Client |
| 99 | +} |
| 100 | + |
| 101 | +type MockError struct { |
| 102 | + message string |
| 103 | +} |
| 104 | + |
| 105 | +func (e *MockError) Error() string { |
| 106 | + return e.message |
| 107 | +} |
| 108 | + |
| 109 | +func (e *erroringClient) List(ctx context.Context, list client.ObjectList, opts ...client.ListOption) error { |
| 110 | + return &MockError{message: "mocked list error"} |
| 111 | +} |
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