1 files changed, 58 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Array/prototype/copyWithin/coerced-values-start.js b/js/src/tests/test262/built-ins/Array/prototype/copyWithin/coerced-values-start.js
new file mode 100644
index 0000000000..804e795b56
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Array/prototype/copyWithin/coerced-values-start.js
@@ -0,0 +1,58 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-array.prototype.copywithin
+description: >
+  start argument is coerced to an integer value.
+info: |
+  22.1.3.3 Array.prototype.copyWithin (target, start [ , end ] )
+
+  ...
+  8. Let relativeStart be ToInteger(start).
+  ...
+includes: [compareArray.js]
+---*/
+
+assert.compareArray(
+  [0, 1, 2, 3].copyWithin(1, undefined), [0, 0, 1, 2],
+  '[0, 1, 2, 3].copyWithin(1, undefined) must return [0, 0, 1, 2]'
+);
+
+assert.compareArray(
+  [0, 1, 2, 3].copyWithin(1, false), [0, 0, 1, 2],
+  '[0, 1, 2, 3].copyWithin(1, false) must return [0, 0, 1, 2]'
+);
+
+assert.compareArray(
+  [0, 1, 2, 3].copyWithin(1, NaN), [0, 0, 1, 2],
+  '[0, 1, 2, 3].copyWithin(1, NaN) must return [0, 0, 1, 2]'
+);
+
+assert.compareArray(
+  [0, 1, 2, 3].copyWithin(1, null), [0, 0, 1, 2],
+  '[0, 1, 2, 3].copyWithin(1, null) must return [0, 0, 1, 2]'
+);
+
+
+assert.compareArray(
+  [0, 1, 2, 3].copyWithin(0, true), [1, 2, 3, 3],
+  '[0, 1, 2, 3].copyWithin(0, true) must return [1, 2, 3, 3]'
+);
+
+
+assert.compareArray(
+  [0, 1, 2, 3].copyWithin(0, '1'), [1, 2, 3, 3],
+  '[0, 1, 2, 3].copyWithin(0, "1") must return [1, 2, 3, 3]'
+);
+
+assert.compareArray(
+  [0, 1, 2, 3].copyWithin(1, 0.5), [0, 0, 1, 2],
+  '[0, 1, 2, 3].copyWithin(1, 0.5) must return [0, 0, 1, 2]'
+);
+
+assert.compareArray(
+  [0, 1, 2, 3].copyWithin(0, 1.5), [1, 2, 3, 3],
+  '[0, 1, 2, 3].copyWithin(0, 1.5) must return [1, 2, 3, 3]'
+);
+
+reportCompare(0, 0);