TypedArray(length) constructor

test/mjsunit/harmony/typedarrays.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 95 matching lines @@
   TestSlice(10, 100, -10);
 }
 
 TestArrayBufferSlice();
 
 // Typed arrays
 
 function TestTypedArray(proto, elementSize, typicalElement) {
   var ab = new ArrayBuffer(256*elementSize);
 
+  var a0 = new proto(30);
+  assertSame(elementSize, a0.BYTES_PER_ELEMENT);
+  assertSame(30, a0.length);
+  assertSame(30*elementSize, a0.byteLength);
+  assertSame(0, a0.byteOffset);
+  assertSame(30*elementSize, a0.buffer.byteLength);
+
+  var aLen0 = new proto(0);
+  assertSame(elementSize, aLen0.BYTES_PER_ELEMENT);
+  assertSame(0, aLen0.length);
+  assertSame(0, aLen0.byteLength);
+  assertSame(0, aLen0.byteOffset);
+  assertSame(0, aLen0.buffer.byteLength);
+
+  var aOverBufferLen0 = new proto(ab, 128*elementSize, 0);
+  assertSame(ab, aOverBufferLen0.buffer);
+  assertSame(elementSize, aOverBufferLen0.BYTES_PER_ELEMENT);
+  assertSame(0, aOverBufferLen0.length);
+  assertSame(0, aOverBufferLen0.byteLength);
+  assertSame(128*elementSize, aOverBufferLen0.byteOffset);
+
   var a1 = new proto(ab, 128*elementSize, 128);
   assertSame(ab, a1.buffer);
   assertSame(elementSize, a1.BYTES_PER_ELEMENT);
   assertSame(128, a1.length);
   assertSame(128*elementSize, a1.byteLength);
   assertSame(128*elementSize, a1.byteOffset);
 
 
   var a2 = new proto(ab, 64*elementSize, 128);
   assertSame(ab, a2.buffer);
@@ skipping 96 matching lines @@
   }
   for (var i = 0; i < 20; i++) {
     TestProperty(m, i, 'val' + i);
     TestProperty(m, 'foo' + i, 'bar' + i);
   }
 }
 TestArbitrary(new ArrayBuffer(256));
 
 // Test direct constructor call
 assertTrue(ArrayBuffer() instanceof ArrayBuffer);