1 files changed, 98 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/DataView/toindex-bytelength-sab.js b/js/src/tests/test262/built-ins/DataView/toindex-bytelength-sab.js
new file mode 100644
index 0000000000..9514d7b8c3
--- /dev/null
+++ b/js/src/tests/test262/built-ins/DataView/toindex-bytelength-sab.js
@@ -0,0 +1,98 @@
+// |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: >
+  ToIndex conversions on 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.
+  9. Else,
+    a. Let viewByteLength be ? ToIndex(byteLength).
+    b. If offset + viewByteLength > bufferByteLength, throw a RangeError
+    exception.
+  ...
+
+  ToIndex( value )
+
+  1. If value is undefined, then
+    a. Let index be 0.
+  2. Else,
+    a. Let integerIndex be ? ToInteger(value).
+    b. If integerIndex < 0, throw a RangeError exception.
+    c. Let index be ! ToLength(integerIndex).
+    d. If SameValueZero(integerIndex, index) is false, throw a RangeError exception.
+  3. Return index.
+features: [SharedArrayBuffer]
+---*/
+
+var obj1 = {
+  valueOf: function() {
+    return 3;
+  }
+};
+
+var obj2 = {
+  toString: function() {
+    return 4;
+  }
+};
+
+var sample;
+var ab = new SharedArrayBuffer(42);
+
+sample = new DataView(ab, 0, -0);
+assert.sameValue(sample.byteLength, 0, "-0");
+
+sample = new DataView(ab, 0, obj1);
+assert.sameValue(sample.byteLength, 3, "object's valueOf");
+
+sample = new DataView(ab, 0, obj2);
+assert.sameValue(sample.byteLength, 4, "object's toString");
+
+sample = new DataView(ab, 0, "");
+assert.sameValue(sample.byteLength, 0, "the Empty string");
+
+sample = new DataView(ab, 0, "0");
+assert.sameValue(sample.byteLength, 0, "string '0'");
+
+sample = new DataView(ab, 0, "1");
+assert.sameValue(sample.byteLength, 1, "string '1'");
+
+sample = new DataView(ab, 0, true);
+assert.sameValue(sample.byteLength, 1, "true");
+
+sample = new DataView(ab, 0, false);
+assert.sameValue(sample.byteLength, 0, "false");
+
+sample = new DataView(ab, 0, NaN);
+assert.sameValue(sample.byteLength, 0, "NaN");
+
+sample = new DataView(ab, 0, null);
+assert.sameValue(sample.byteLength, 0, "null");
+
+sample = new DataView(ab, 0, 0.1);
+assert.sameValue(sample.byteLength, 0, "0.1");
+
+sample = new DataView(ab, 0, 0.9);
+assert.sameValue(sample.byteLength, 0, "0.9");
+
+sample = new DataView(ab, 0, 1.1);
+assert.sameValue(sample.byteLength, 1, "1.1");
+
+sample = new DataView(ab, 0, 1.9);
+assert.sameValue(sample.byteLength, 1, "1.9");
+
+sample = new DataView(ab, 0, -0.1);
+assert.sameValue(sample.byteLength, 0, "-0.1");
+
+sample = new DataView(ab, 0, -0.99999);
+assert.sameValue(sample.byteLength, 0, "-0.99999");
+
+reportCompare(0, 0);