diff -r 000000000000 -r 6474c204b198 browser/devtools/debugger/test/browser_dbg_parser-02.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/devtools/debugger/test/browser_dbg_parser-02.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,26 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Check that syntax errors are reported correctly.
+ */
+
+function test() {
+  let { Parser } = Cu.import("resource:///modules/devtools/Parser.jsm", {});
+
+  let source = "let x + 42;";
+  let parser = new Parser();
+  let parsed = parser.get(source);
+
+  ok(parsed,
+    "An object should be returned even though the source had a syntax error.");
+
+  is(parser.errors.length, 1,
+    "There should be one error logged when parsing.");
+  is(parser.errors[0].name, "SyntaxError",
+    "The correct exception was caught.");
+  is(parser.errors[0].message, "missing ; before statement",
+    "The correct exception was caught.");
+
+  finish();
+}