1 files changed, 18 insertions, 0 deletions
diff --git a/devtools/client/webconsole/test/browser/browser_jsterm_null_undefined.js b/devtools/client/webconsole/test/browser/browser_jsterm_null_undefined.js
new file mode 100644
index 0000000000..957495e399
--- /dev/null
+++ b/devtools/client/webconsole/test/browser/browser_jsterm_null_undefined.js
@@ -0,0 +1,18 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const TEST_URI =
+  "data:text/html,<!DOCTYPE html>Test evaluating null and undefined";
+
+add_task(async function () {
+  const hud = await openNewTabAndConsole(TEST_URI);
+
+  // Check that an evaluated null produces "null". See Bug 650780.
+  let message = await executeAndWaitForResultMessage(hud, "null", "null");
+  ok(message, "`null` returned the expected value");
+
+  message = await executeAndWaitForResultMessage(hud, "undefined", "undefined");
+  ok(message, "`undefined` returned the expected value");
+});