1 files changed, 20 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/String/symbol-string-coercion.js b/js/src/tests/test262/built-ins/String/symbol-string-coercion.js
new file mode 100644
index 0000000000..db77775d9d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/String/symbol-string-coercion.js
@@ -0,0 +1,20 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-string-constructor
+description: Symbol value may be coerced to a String
+info: |
+    1. If no arguments were passed to this function invocation, let s be "".
+    2. Else,
+       a. If NewTarget is undefined and Type(value) is Symbol, return
+          SymbolDescriptiveString(value).
+features: [Symbol]
+---*/
+
+assert.sameValue(String(Symbol('66')), 'Symbol(66)');
+assert.sameValue(String(Symbol()), 'Symbol()', 'implicit `undefined`');
+assert.sameValue(
+  String(Symbol(undefined)), 'Symbol()', 'explicit `undefined`'
+);
+
+reportCompare(0, 0);