1 files changed, 43 insertions, 0 deletions
diff --git a/js/src/tests/non262/extensions/keyword-unescaped-requirement.js b/js/src/tests/non262/extensions/keyword-unescaped-requirement.js
new file mode 100644
index 0000000000..20d3555e3d
--- /dev/null
+++ b/js/src/tests/non262/extensions/keyword-unescaped-requirement.js
@@ -0,0 +1,43 @@
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 1204027;
+var summary =
+  "Escape sequences aren't allowed in bolded grammar tokens (that is, in " +
+  "keywords, possibly contextual keywords)";
+
+print(BUGNUMBER + ": " + summary);
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+var randomExtensions =
+  [
+   "for \\u0065ach (var x in []);",
+   "for e\\u0061ch (var x in []);",
+   "[0 for \\u0065ach (var x in [])]",
+   "[0 for e\\u0061ch (var x in [])]",
+   "(0 for \\u0065ach (var x in []))",
+   "(0 for e\\u0061ch (var x in []))",
+
+   // Soon to be not an extension, maybe...
+   "(for (x \\u006ff [1]) x)",
+   "(for (x o\\u0066 [1]) x)",
+  ];
+
+for (var extension of randomExtensions)
+{
+  assertThrowsInstanceOf(() => Function(extension), SyntaxError,
+                         "bad behavior for: " + extension);
+}
+
+/******************************************************************************/
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);
+
+print("Tests complete");