1 files changed, 78 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Atomics/isLockFree/corner-cases.js b/js/src/tests/test262/built-ins/Atomics/isLockFree/corner-cases.js
new file mode 100644
index 0000000000..f398e06100
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Atomics/isLockFree/corner-cases.js
@@ -0,0 +1,78 @@
+// |reftest| skip-if(!this.hasOwnProperty('Atomics')) -- Atomics is not enabled unconditionally
+// Copyright (C) 2017 Mozilla Corporation.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-atomics.islockfree
+description: >
+  Test isLockFree on various non-intuitive arguments
+features: [Atomics]
+---*/
+
+assert.sameValue(
+  Atomics.isLockFree(hide(3, Number.NaN)),
+  false,
+  'Atomics.isLockFree(hide(3, Number.NaN)) returns false'
+);
+assert.sameValue(
+  Atomics.isLockFree(hide(3, -1)),
+  false,
+  'Atomics.isLockFree(hide(3, -1)) returns false'
+);
+assert.sameValue(
+  Atomics.isLockFree(hide(3, 3.14)),
+  false,
+  'Atomics.isLockFree(hide(3, 3.14)) returns false'
+);
+assert.sameValue(
+  Atomics.isLockFree(hide(3, 0)),
+  false,
+  'Atomics.isLockFree(hide(3, 0)) returns false'
+);
+
+assert.sameValue(
+  Atomics.isLockFree('1'),
+  Atomics.isLockFree(1),
+  'Atomics.isLockFree(\'1\') returns Atomics.isLockFree(1)'
+);
+assert.sameValue(
+  Atomics.isLockFree('3'),
+  Atomics.isLockFree(3),
+  'Atomics.isLockFree(\'3\') returns Atomics.isLockFree(3)'
+);
+
+assert.sameValue(
+  Atomics.isLockFree(true),
+  Atomics.isLockFree(1),
+  'Atomics.isLockFree(true) returns Atomics.isLockFree(1)'
+);
+
+assert.sameValue(
+  Atomics.isLockFree(1),
+  Atomics.isLockFree({valueOf: () => 1}),
+  'Atomics.isLockFree(1) returns Atomics.isLockFree({valueOf: () => 1})'
+);
+assert.sameValue(
+  Atomics.isLockFree(3),
+  Atomics.isLockFree({valueOf: () => 3}),
+  'Atomics.isLockFree(3) returns Atomics.isLockFree({valueOf: () => 3})'
+);
+assert.sameValue(
+  Atomics.isLockFree(1),
+  Atomics.isLockFree({toString: () => '1'}),
+  'Atomics.isLockFree(1) returns Atomics.isLockFree({toString: () => \'1\'})'
+);
+assert.sameValue(
+  Atomics.isLockFree(3),
+  Atomics.isLockFree({toString: () => '3'}),
+  'Atomics.isLockFree(3) returns Atomics.isLockFree({toString: () => \'3\'})'
+);
+
+function hide(k, x) {
+  if (k) {
+    return hide(k - 3, x) + x;
+  }
+  return 0;
+}
+
+reportCompare(0, 0);