1 /*
   2  * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  * 
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  * 
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  * 
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  * 
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /**
  25  * JDK-8015958: DataView constructor is not defined
  26  *
  27  * @test
  28  * @run
  29  */
  30 
  31 // basic DataView constructor checks.
  32 
  33 // check ArrayBufferView property values of DataView instance
  34 function check(dv, buf, offset, length) {
  35     if (dv.buffer !== buf) {
  36         fail("DataView.buffer is wrong");
  37     }
  38 
  39     if (dv.byteOffset != offset) {
  40         fail("DataView.byteOffset = " + dv.byteOffset + ", expected " + offset);
  41     }
  42 
  43     if (dv.byteLength != length) {
  44         fail("DataView.byteLength = " + dv.byteLength + ", expected " + length);
  45     }
  46 }
  47 
  48 var buffer = new ArrayBuffer(12);
  49 check(new DataView(buffer), buffer, 0, 12);
  50 check(new DataView(buffer, 2), buffer, 2, 10);
  51 check(new DataView(buffer, 4, 8), buffer, 4, 8);
  52 
  53 // make sure expected error is thrown
  54 function checkError(callback, ErrorType) {
  55     try {
  56         callback();
  57         fail("Should have thrown " + ErrorType.name);
  58     } catch (e) {
  59         if (! (e instanceof ErrorType)) {
  60             fail("Expected " + ErrorType.name + " got " + e);
  61         }
  62     }
  63 }
  64 
  65 // non ArrayBuffer as first arg
  66 checkError(function() { new DataView(344) }, TypeError);
  67 
  68 // illegal offset/length values
  69 checkError(function() { new DataView(buffer, -1) }, RangeError);
  70 checkError(function() { new DataView(buffer, 15) }, RangeError);
  71 checkError(function() { new DataView(buffer, 1, 32) }, RangeError);