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1 // Copyright 2008 the V8 project authors. All rights reserved. | |
2 // Redistribution and use in source and binary forms, with or without | |
3 // modification, are permitted provided that the following conditions are | |
4 // met: | |
5 // | |
6 // * Redistributions of source code must retain the above copyright | |
7 // notice, this list of conditions and the following disclaimer. | |
8 // * Redistributions in binary form must reproduce the above | |
9 // copyright notice, this list of conditions and the following | |
10 // disclaimer in the documentation and/or other materials provided | |
11 // with the distribution. | |
12 // * Neither the name of Google Inc. nor the names of its | |
13 // contributors may be used to endorse or promote products derived | |
14 // from this software without specific prior written permission. | |
15 // | |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
27 | |
28 // Flags: --expose-debug-as debug | |
29 // Test the mirror object for number values | |
30 | |
31 function testNumberMirror(n) { | |
32 // Create mirror and JSON representation. | |
33 var mirror = debug.MakeMirror(n); | |
34 var serializer = debug.MakeMirrorSerializer(); | |
35 var json = JSON.stringify(serializer.serializeValue(mirror)); | |
36 | |
37 // Check the mirror hierachy. | |
38 assertTrue(mirror instanceof debug.Mirror); | |
39 assertTrue(mirror instanceof debug.ValueMirror); | |
40 assertTrue(mirror instanceof debug.NumberMirror); | |
41 | |
42 // Check the mirror properties. | |
43 assertTrue(mirror.isNumber()); | |
44 assertEquals('number', mirror.type()); | |
45 assertTrue(mirror.isPrimitive()); | |
46 | |
47 // Test text representation | |
48 assertEquals(String(n), mirror.toText()); | |
49 | |
50 // Parse JSON representation and check. | |
51 var fromJSON = eval('(' + json + ')'); | |
52 assertEquals('number', fromJSON.type); | |
53 if (isFinite(n)) { | |
54 assertEquals(n, fromJSON.value); | |
55 } else { | |
56 // NaN and Infinity values are encoded as strings. | |
57 assertTrue(typeof fromJSON.value == 'string'); | |
58 if (n === Infinity) { | |
59 assertEquals('Infinity', fromJSON.value); | |
60 } else if (n === -Infinity) { | |
61 assertEquals('-Infinity', fromJSON.value); | |
62 } else { | |
63 assertEquals('NaN', fromJSON.value); | |
64 } | |
65 } | |
66 } | |
67 | |
68 | |
69 // Test a number of different numbers. | |
70 testNumberMirror(-7); | |
71 testNumberMirror(-6.5); | |
72 testNumberMirror(0); | |
73 testNumberMirror(42); | |
74 testNumberMirror(100.0002); | |
75 testNumberMirror(Infinity); | |
76 testNumberMirror(-Infinity); | |
77 testNumberMirror(NaN); | |
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