1 files changed, 59 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/DataView/defined-byteoffset-undefined-bytelength-sab.js b/js/src/tests/test262/built-ins/DataView/defined-byteoffset-undefined-bytelength-sab.js
new file mode 100644
index 0000000000..7bde26ef05
--- /dev/null
+++ b/js/src/tests/test262/built-ins/DataView/defined-byteoffset-undefined-bytelength-sab.js
@@ -0,0 +1,59 @@
+// |reftest| skip-if(!this.hasOwnProperty('SharedArrayBuffer')) -- SharedArrayBuffer is not enabled unconditionally
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// Copyright (C) 2017 Mozilla Corporation. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-dataview-buffer-byteoffset-bytelength
+description: >
+  Return new instance from defined byteoffset and undefined bytelength
+info: |
+  24.2.2.1 DataView (buffer, byteOffset, byteLength )
+
+  ...
+  8. If byteLength is either not present or undefined, then
+    a. Let viewByteLength be bufferByteLength - offset.
+  ...
+  17. Return O.
+features: [SharedArrayBuffer]
+---*/
+
+var sample;
+var buffer = new SharedArrayBuffer(4);
+
+sample = new DataView(buffer, 0, undefined);
+assert.sameValue(sample.byteLength, 4, "sample.byteLength");
+assert.sameValue(sample.byteOffset, 0, "sample.byteOffset");
+assert.sameValue(sample.buffer, buffer);
+assert.sameValue(sample.constructor, DataView);
+assert.sameValue(Object.getPrototypeOf(sample), DataView.prototype);
+
+sample = new DataView(buffer, 1, undefined);
+assert.sameValue(sample.byteLength, 3, "sample.byteLength");
+assert.sameValue(sample.byteOffset, 1, "sample.byteOffset");
+assert.sameValue(sample.buffer, buffer);
+assert.sameValue(sample.constructor, DataView);
+assert.sameValue(Object.getPrototypeOf(sample), DataView.prototype);
+
+sample = new DataView(buffer, 2, undefined);
+assert.sameValue(sample.byteLength, 2, "sample.byteLength");
+assert.sameValue(sample.byteOffset, 2, "sample.byteOffset");
+assert.sameValue(sample.buffer, buffer);
+assert.sameValue(sample.constructor, DataView);
+assert.sameValue(Object.getPrototypeOf(sample), DataView.prototype);
+
+sample = new DataView(buffer, 3, undefined);
+assert.sameValue(sample.byteLength, 1, "sample.byteLength");
+assert.sameValue(sample.byteOffset, 3, "sample.byteOffset");
+assert.sameValue(sample.buffer, buffer);
+assert.sameValue(sample.constructor, DataView);
+assert.sameValue(Object.getPrototypeOf(sample), DataView.prototype);
+
+sample = new DataView(buffer, 4, undefined);
+assert.sameValue(sample.byteLength, 0, "sample.byteLength");
+assert.sameValue(sample.byteOffset, 4, "sample.byteOffset");
+assert.sameValue(sample.buffer, buffer);
+assert.sameValue(sample.constructor, DataView);
+assert.sameValue(Object.getPrototypeOf(sample), DataView.prototype);
+
+reportCompare(0, 0);