1 files changed, 24 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/String/prototype/repeat/count-coerced-to-zero-returns-empty-string.js b/js/src/tests/test262/built-ins/String/prototype/repeat/count-coerced-to-zero-returns-empty-string.js
new file mode 100644
index 0000000000..574a1731fd
--- /dev/null
+++ b/js/src/tests/test262/built-ins/String/prototype/repeat/count-coerced-to-zero-returns-empty-string.js
@@ -0,0 +1,24 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 21.1.3.13
+description: >
+  If ToInteger(count) is zero, returns an empty String.
+info: |
+  21.1.3.13 String.prototype.repeat ( count )
+
+  8. Let T be a String value that is made from n copies of S appended together.
+  If n is 0, T is the empty String.
+  9. Return T.
+---*/
+
+var str = 'ES2015';
+
+assert.sameValue(str.repeat(NaN), '', 'str.repeat(NaN) returns ""');
+assert.sameValue(str.repeat(null), '', 'str.repeat(null) returns ""');
+assert.sameValue(str.repeat(undefined), '', 'str.repeat(undefined) returns ""');
+assert.sameValue(str.repeat(false), '', 'str.repeat(false) returns ""');
+assert.sameValue(str.repeat('0'), '', 'str.repeat("0") returns ""');
+assert.sameValue(str.repeat(0.9), '', 'str.repeat(0.9) returns ""');
+
+reportCompare(0, 0);