Add m-esr52 at 52.6.0

1 files changed, 35 insertions, 0 deletions

diff --git a/js/src/tests/ecma_6/Syntax/let-as-label.js b/js/src/tests/ecma_6/Syntax/let-as-label.js
new file mode 100644
index 000000000..a01ad556e
--- /dev/null
+++ b/js/src/tests/ecma_6/Syntax/let-as-label.js
@@ -0,0 +1,35 @@
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 1288459;
+var summary = "let can't be used as a label in strict mode code";
+
+print(BUGNUMBER + ": " + summary);
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+Function("let: 42");
+Function("l\\u0065t: 42");
+assertThrowsInstanceOf(() => Function(" 'use strict'; let: 42"), SyntaxError);
+assertThrowsInstanceOf(() => Function(" 'use strict' \n let: 42"), SyntaxError);
+assertThrowsInstanceOf(() => Function(" 'use strict'; l\\u0065t: 42"), SyntaxError);
+assertThrowsInstanceOf(() => Function(" 'use strict' \n l\\u0065t: 42"), SyntaxError);
+
+eval("let: 42");
+eval("l\\u0065t: 42");
+assertThrowsInstanceOf(() => eval(" 'use strict'; let: 42"), SyntaxError);
+assertThrowsInstanceOf(() => eval(" 'use strict' \n let: 42;"), SyntaxError);
+assertThrowsInstanceOf(() => eval(" 'use strict'; l\\u0065t: 42"), SyntaxError);
+assertThrowsInstanceOf(() => eval(" 'use strict' \n l\\u0065t: 42;"), SyntaxError);
+
+/******************************************************************************/
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);
+
+print("Tests complete");