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 31function 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. 70testNumberMirror(-7); 71testNumberMirror(-6.5); 72testNumberMirror(0); 73testNumberMirror(42); 74testNumberMirror(100.0002); 75testNumberMirror(Infinity); 76testNumberMirror(-Infinity); 77testNumberMirror(NaN); 78