Add webhook tests

pkg/controller/webhook.go

@@ -16,7 +16,6 @@ import (
 // CallWebhook does a HTTP POST to an external service and
 // returns an error if the response status code is non-2xx
 func CallWebhook(name string, namepace string, w flaggerv1.CanaryWebhook) error {
-
 	payload := flaggerv1.CanaryWebhookPayload{
 		Name:      name,
 		Namespace: namepace,

pkg/controller/webhook_test.go

@@ -0,0 +1,42 @@
+package controller
+
+import (
+	flaggerv1 "github.com/stefanprodan/flagger/pkg/apis/flagger/v1alpha2"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+)
+
+func TestCallWebhook(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusAccepted)
+	}))
+	defer ts.Close()
+	hook := flaggerv1.CanaryWebhook{
+		Name:     "validation",
+		URL:      ts.URL,
+		Timeout:  "10s",
+		Metadata: &map[string]string{"key1": "val1"},
+	}
+
+	err := CallWebhook("podinfo", "default", hook)
+	if err != nil {
+		t.Fatal(err.Error())
+	}
+}
+
+func TestCallWebhook_StatusCode(t *testing.T) {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusInternalServerError)
+	}))
+	defer ts.Close()
+	hook := flaggerv1.CanaryWebhook{
+		Name: "validation",
+		URL:  ts.URL,
+	}
+
+	err := CallWebhook("podinfo", "default", hook)
+	if err == nil {
+		t.Errorf("Got no error wanted %v", http.StatusInternalServerError)
+	}
+}