1 files changed, 28 insertions, 0 deletions
diff --git a/js/src/tests/test262/harness/assert-samevalue-zeros.js b/js/src/tests/test262/harness/assert-samevalue-zeros.js
new file mode 100644
index 0000000000..b1d074ea25
--- /dev/null
+++ b/js/src/tests/test262/harness/assert-samevalue-zeros.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: >
+    Positive and negative zero do not satisfy the assertion.
+---*/
+
+var threw = false;
+
+try {
+  assert.sameValue(0, -0);
+} catch(err) {
+  threw = true;
+  if (err.constructor !== Test262Error) {
+    throw new Error(
+      'Expected a Test262Error, but a "' + err.constructor.name +
+      '" was thrown.'
+    );
+  }
+  assert.notSameValue(err.message.indexOf('-0'), -1);
+}
+
+if (threw === false) {
+  throw new Error('Expected a Test262Error, but no error was thrown.');
+}
+
+reportCompare(0, 0);