[GH-443] Add unit tests for ./services/webhook/webhook.go (#710)

* Add unit tests for ./services/webhook/webhook.go

* fix logger in TestClientUpdateNotify

* make ci happy

Co-authored-by: Doug Lauder <wiggin77@warpmail.net>
Co-authored-by: Scott Bishel <scott.bishel@mattermost.com>

server/services/webhook/webhook_test.go

@@ -0,0 +1,31 @@
+package webhook
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/mattermost/focalboard/server/model"
+	"github.com/mattermost/focalboard/server/services/config"
+	"github.com/mattermost/focalboard/server/services/mlog"
+)
+
+func TestClientUpdateNotify(t *testing.T) {
+	var isNotified bool
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		isNotified = true
+	}))
+	defer ts.Close()
+
+	cfg := &config.Configuration{
+		WebhookUpdate: []string{ts.URL},
+	}
+
+	client := NewClient(cfg, mlog.CreateTestLogger(t))
+
+	client.NotifyUpdate(model.Block{})
+
+	if !isNotified {
+		t.Error("webhook url not be notified")
+	}
+}