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); 78
