diff --git a/assets/static/watchdog.test.js b/assets/static/watchdog.test.js
index d88b7d8e8..9ea11dd4d 100644
--- a/assets/static/watchdog.test.js
+++ b/assets/static/watchdog.test.js
@@ -1,9 +1,16 @@
 const watchdog = require("./watchdog");
+const moment = require("moment");
 
-test("watchdog init", () => {
+test("watchdog init()", () => {
     watchdog.init();
 });
 
-test("watchdog getTs without pong", () => {
-    expect(watchdog.getTs).toBe(undefined);
+test("watchdog getLastUpdate() without pong", () => {
+    expect(watchdog.getLastUpdate()).toBe(0);
+});
+
+test("watchdog getLastUpdate() with pong", () => {
+    var ts = moment();
+    watchdog.pong(ts);
+    expect(watchdog.getLastUpdate()).toBe(ts.utc().unix());
 });