Unit tests for pkg/client

Author: bpineau

.goreleaser.yml

@@ -25,7 +25,7 @@ dockers:
   - image: bpineau/katafygio
     goos: linux
     goarch: amd64
-    dockerfile: Dockerfile.goreleaser
+    dockerfile: assets/Dockerfile.goreleaser
     tag_templates:
       - '{{ .Tag }}'
       - latest

assets/.kube/config

@@ -0,0 +1,13 @@
+apiVersion: v1
+clusters:
+- cluster:
+    server: http://127.0.0.1:8080
+  name: test-fake-server
+contexts:
+- context:
+    cluster: test-fake-server
+    user: ""
+  name: test-fake-server
+current-context: test-fake-server
+kind: Config
+preferences: {}

Dockerfile.goreleaser assets/Dockerfile.goreleaser

@@ -0,0 +1,38 @@
+package client
+
+import (
+	"fmt"
+	"os"
+	"testing"
+)
+
+const nonExistentPath = "\\/hopefully/non/existent/path"
+
+func TestClientSet(t *testing.T) {
+	here, _ := os.Getwd()
+	_ = os.Setenv("HOME", here+"/../../assets")
+	cs, err := NewClientSet("", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if fmt.Sprintf("%T", cs) != "*kubernetes.Clientset" {
+		t.Errorf("NewClientSet() didn't return a *kubernetes.Clientset: %T", cs)
+	}
+
+	cs, _ = NewClientSet("http://127.0.0.1", "/dev/null")
+	if fmt.Sprintf("%T", cs) != "*kubernetes.Clientset" {
+		t.Errorf("NewClientSet(server) didn't return a *kubernetes.Clientset: %T", cs)
+	}
+
+	_, err = NewClientSet("http://127.0.0.1", nonExistentPath)
+	if err == nil {
+		t.Fatal("NewClientSet() should fail on non existent kubeconfig path")
+	}
+
+	_ = os.Unsetenv("KUBERNETES_SERVICE_HOST")
+	_ = os.Setenv("HOME", nonExistentPath)
+	_, err = NewClientSet("", "")
+	if err == nil {
+		t.Fatal("NewClientSet() should fail to load InClusterConfig without kube address env")
+	}
+}