1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/tests/ecma_6/Statements/for-in-with-declaration.js b/js/src/tests/ecma_6/Statements/for-in-with-declaration.js
new file mode 100644
index 000000000..13c71b19c
--- /dev/null
+++ b/js/src/tests/ecma_6/Statements/for-in-with-declaration.js
@@ -0,0 +1,31 @@
+// Any copyright is dedicated to the Public Domain.
+// http://creativecommons.org/licenses/publicdomain/
+
+//-----------------------------------------------------------------------------
+var gTestfile = "for-in-with-declaration.js";
+var BUGNUMBER = 1163851;
+var summary =
+  "Declarations in for-in loop heads must not contain |in|-expression " +
+  "initializers";
+
+print(BUGNUMBER + ": " + summary);
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+assertThrowsInstanceOf(() => Function("for (var x = 3 in {}; ; ) break;"), SyntaxError);
+assertThrowsInstanceOf(() => Function("for (var x, y = 3 in {}; ; ) break;"), SyntaxError);
+assertThrowsInstanceOf(() => Function("for (var x = 5, y = 3 in {}; ; ) break;"), SyntaxError);
+assertThrowsInstanceOf(() => Function("for (const x = 3 in {}; ; ) break;"), SyntaxError);
+assertThrowsInstanceOf(() => Function("for (const x = 5, y = 3 in {}; ; ) break;"), SyntaxError);
+assertThrowsInstanceOf(() => Function("for (let x = 3 in {}; ; ) break;"), SyntaxError);
+assertThrowsInstanceOf(() => Function("for (let x, y = 3 in {}; ; ) break;"), SyntaxError);
+assertThrowsInstanceOf(() => Function("for (let x = 2, y = 3 in {}; ; ) break;"), SyntaxError);
+
+/******************************************************************************/
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);
+
+print("Tests complete");