|
| 1 | +package kubernetes |
| 2 | + |
| 3 | +import ( |
| 4 | + "errors" |
| 5 | + "k8s.io/client-go/rest" |
| 6 | + "os" |
| 7 | + "path" |
| 8 | + "strings" |
| 9 | + "testing" |
| 10 | +) |
| 11 | + |
| 12 | +func TestKubernetes_IsInCluster(t *testing.T) { |
| 13 | + t.Run("with explicit kubeconfig", func(t *testing.T) { |
| 14 | + k := Kubernetes{ |
| 15 | + Kubeconfig: "kubeconfig", |
| 16 | + } |
| 17 | + if k.IsInCluster() { |
| 18 | + t.Errorf("expected not in cluster, got in cluster") |
| 19 | + } |
| 20 | + }) |
| 21 | + t.Run("with empty kubeconfig and in cluster", func(t *testing.T) { |
| 22 | + originalFunction := InClusterConfig |
| 23 | + InClusterConfig = func() (*rest.Config, error) { |
| 24 | + return &rest.Config{}, nil |
| 25 | + } |
| 26 | + defer func() { |
| 27 | + InClusterConfig = originalFunction |
| 28 | + }() |
| 29 | + k := Kubernetes{ |
| 30 | + Kubeconfig: "", |
| 31 | + } |
| 32 | + if !k.IsInCluster() { |
| 33 | + t.Errorf("expected in cluster, got not in cluster") |
| 34 | + } |
| 35 | + }) |
| 36 | + t.Run("with empty kubeconfig and not in cluster (empty)", func(t *testing.T) { |
| 37 | + originalFunction := InClusterConfig |
| 38 | + InClusterConfig = func() (*rest.Config, error) { |
| 39 | + return nil, nil |
| 40 | + } |
| 41 | + defer func() { |
| 42 | + InClusterConfig = originalFunction |
| 43 | + }() |
| 44 | + k := Kubernetes{ |
| 45 | + Kubeconfig: "", |
| 46 | + } |
| 47 | + if k.IsInCluster() { |
| 48 | + t.Errorf("expected not in cluster, got in cluster") |
| 49 | + } |
| 50 | + }) |
| 51 | + t.Run("with empty kubeconfig and not in cluster (error)", func(t *testing.T) { |
| 52 | + originalFunction := InClusterConfig |
| 53 | + InClusterConfig = func() (*rest.Config, error) { |
| 54 | + return nil, errors.New("error") |
| 55 | + } |
| 56 | + defer func() { |
| 57 | + InClusterConfig = originalFunction |
| 58 | + }() |
| 59 | + k := Kubernetes{ |
| 60 | + Kubeconfig: "", |
| 61 | + } |
| 62 | + if k.IsInCluster() { |
| 63 | + t.Errorf("expected not in cluster, got in cluster") |
| 64 | + } |
| 65 | + }) |
| 66 | +} |
| 67 | + |
| 68 | +func TestKubernetes_ResolveKubernetesConfigurations_Explicit(t *testing.T) { |
| 69 | + t.Run("with missing file", func(t *testing.T) { |
| 70 | + tempDir := t.TempDir() |
| 71 | + k := Kubernetes{Kubeconfig: path.Join(tempDir, "config")} |
| 72 | + err := resolveKubernetesConfigurations(&k) |
| 73 | + if err == nil { |
| 74 | + t.Errorf("expected error, got nil") |
| 75 | + } |
| 76 | + if !errors.Is(err, os.ErrNotExist) { |
| 77 | + t.Errorf("expected file not found error, got %v", err) |
| 78 | + } |
| 79 | + if !strings.HasSuffix(err.Error(), ": no such file or directory") { |
| 80 | + t.Errorf("expected file not found error, got %v", err) |
| 81 | + } |
| 82 | + }) |
| 83 | + t.Run("with empty file", func(t *testing.T) { |
| 84 | + tempDir := t.TempDir() |
| 85 | + kubeconfigPath := path.Join(tempDir, "config") |
| 86 | + if err := os.WriteFile(kubeconfigPath, []byte(""), 0644); err != nil { |
| 87 | + t.Fatalf("failed to create kubeconfig file: %v", err) |
| 88 | + } |
| 89 | + k := Kubernetes{Kubeconfig: kubeconfigPath} |
| 90 | + err := resolveKubernetesConfigurations(&k) |
| 91 | + if err == nil { |
| 92 | + t.Errorf("expected error, got nil") |
| 93 | + } |
| 94 | + if !strings.Contains(err.Error(), "no configuration has been provided") { |
| 95 | + t.Errorf("expected no kubeconfig error, got %v", err) |
| 96 | + } |
| 97 | + }) |
| 98 | + t.Run("with valid file", func(t *testing.T) { |
| 99 | + tempDir := t.TempDir() |
| 100 | + kubeconfigPath := path.Join(tempDir, "config") |
| 101 | + kubeconfigContent := ` |
| 102 | +apiVersion: v1 |
| 103 | +kind: Config |
| 104 | +clusters: |
| 105 | +- cluster: |
| 106 | + server: https://example.com |
| 107 | + name: example-cluster |
| 108 | +contexts: |
| 109 | +- context: |
| 110 | + cluster: example-cluster |
| 111 | + user: example-user |
| 112 | + name: example-context |
| 113 | +current-context: example-context |
| 114 | +users: |
| 115 | +- name: example-user |
| 116 | + user: |
| 117 | + token: example-token |
| 118 | +` |
| 119 | + if err := os.WriteFile(kubeconfigPath, []byte(kubeconfigContent), 0644); err != nil { |
| 120 | + t.Fatalf("failed to create kubeconfig file: %v", err) |
| 121 | + } |
| 122 | + k := Kubernetes{Kubeconfig: kubeconfigPath} |
| 123 | + err := resolveKubernetesConfigurations(&k) |
| 124 | + if err != nil { |
| 125 | + t.Fatalf("expected no error, got %v", err) |
| 126 | + } |
| 127 | + if k.cfg == nil { |
| 128 | + t.Errorf("expected non-nil config, got nil") |
| 129 | + } |
| 130 | + if k.cfg.Host != "https://example.com" { |
| 131 | + t.Errorf("expected host https://example.com, got %s", k.cfg.Host) |
| 132 | + } |
| 133 | + }) |
| 134 | +} |
0 commit comments