1 files changed, 24 insertions, 0 deletions
diff --git a/devtools/client/webconsole/test/browser/browser_webconsole_console_timeStamp.js b/devtools/client/webconsole/test/browser/browser_webconsole_console_timeStamp.js
new file mode 100644
index 0000000000..158e10b7a4
--- /dev/null
+++ b/devtools/client/webconsole/test/browser/browser_webconsole_console_timeStamp.js
@@ -0,0 +1,24 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Tests that a console.timeStamp() does not print anything in the console
+
+"use strict";
+
+const TEST_URI = "data:text/html,<!DOCTYPE html><meta charset=utf8>";
+
+add_task(async function () {
+  // We open the console and an empty tab, as we only want to evaluate something.
+  const hud = await openNewTabAndConsole(TEST_URI);
+  // We execute `console.timeStamp('test')` from the console input.
+  execute(hud, "console.timeStamp('test')");
+  info(`Checking size`);
+  await waitFor(() => findAllMessages(hud).length == 2);
+  const [first, second] = findAllMessages(hud).map(message =>
+    message.textContent.trim()
+  );
+  info(`Checking first message`);
+  is(first, "console.timeStamp('test')", "First message has expected text");
+  info(`Checking second message`);
+  is(second, "undefined", "Second message has expected text");
+});