dataview_new.js revision 765:91ef0e039d91 
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
34function 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
48var buffer = new ArrayBuffer(12);
49check(new DataView(buffer), buffer, 0, 12);
50check(new DataView(buffer, 2), buffer, 2, 10);
51check(new DataView(buffer, 4, 8), buffer, 4, 8);
52
53// make sure expected error is thrown
54function 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
66checkError(function() { new DataView(344) }, TypeError);
67
68// illegal offset/length values
69checkError(function() { new DataView(buffer, -1) }, RangeError);
70checkError(function() { new DataView(buffer, 15) }, RangeError);
71checkError(function() { new DataView(buffer, 1, 32) }, RangeError);
72