1 // Copyright 2012 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 // Test number predicates that Harmony adds to the Number constructor: 29 // isFinite(), isNaN(), isInteger(), isSafeInteger(). 30 31 assertTrue(Number.isFinite(0)); 32 assertTrue(Number.isFinite(Number.MIN_VALUE)); 33 assertTrue(Number.isFinite(Number.MAX_VALUE)); 34 assertTrue(Number.isFinite(Number.MIN_SAFE_INTEGER)); 35 assertTrue(Number.isFinite(Number.MIN_SAFE_INTEGER - 13)); 36 assertTrue(Number.isFinite(Number.MAX_SAFE_INTEGER)); 37 assertTrue(Number.isFinite(Number.MAX_SAFE_INTEGER + 23)); 38 assertFalse(Number.isFinite(Number.NaN)); 39 assertFalse(Number.isFinite(Number.POSITIVE_INFINITY)); 40 assertFalse(Number.isFinite(Number.NEGATIVE_INFINITY)); 41 assertFalse(Number.isFinite(new Number(0))); 42 assertFalse(Number.isFinite(1/0)); 43 assertFalse(Number.isFinite(-1/0)); 44 assertFalse(Number.isFinite({})); 45 assertFalse(Number.isFinite([])); 46 assertFalse(Number.isFinite("s")); 47 assertFalse(Number.isFinite(null)); 48 assertFalse(Number.isFinite(undefined)); 49 50 assertFalse(Number.isNaN(0)); 51 assertFalse(Number.isNaN(Number.MIN_VALUE)); 52 assertFalse(Number.isNaN(Number.MAX_VALUE)); 53 assertFalse(Number.isNaN(Number.MIN_SAFE_INTEGER - 13)); 54 assertFalse(Number.isNaN(Number.MAX_SAFE_INTEGER + 23)); 55 assertTrue(Number.isNaN(Number.NaN)); 56 assertFalse(Number.isNaN(Number.POSITIVE_INFINITY)); 57 assertFalse(Number.isNaN(Number.NEGATIVE_INFINITY)); 58 assertFalse(Number.isNaN(Number.EPSILON)); 59 assertFalse(Number.isNaN(new Number(0))); 60 assertFalse(Number.isNaN(1/0)); 61 assertFalse(Number.isNaN(-1/0)); 62 assertFalse(Number.isNaN({})); 63 assertFalse(Number.isNaN([])); 64 assertFalse(Number.isNaN("s")); 65 assertFalse(Number.isNaN(null)); 66 assertFalse(Number.isNaN(undefined)); 67 68 assertFalse(Number.isInteger({})); 69 assertFalse(Number.isInteger([])); 70 assertFalse(Number.isInteger("s")); 71 assertFalse(Number.isInteger(null)); 72 assertFalse(Number.isInteger(undefined)); 73 assertFalse(Number.isInteger(new Number(2))); 74 assertTrue(Number.isInteger(0)); 75 assertFalse(Number.isInteger(Number.MIN_VALUE)); 76 assertTrue(Number.isInteger(Number.MAX_VALUE)); 77 assertTrue(Number.isInteger(Number.MIN_SAFE_INTEGER)); 78 assertTrue(Number.isInteger(Number.MIN_SAFE_INTEGER - 13)); 79 assertTrue(Number.isInteger(Number.MAX_SAFE_INTEGER)); 80 assertTrue(Number.isInteger(Number.MAX_SAFE_INTEGER + 23)); 81 assertFalse(Number.isInteger(Number.NaN)); 82 assertFalse(Number.isInteger(Number.POSITIVE_INFINITY)); 83 assertFalse(Number.isInteger(Number.NEGATIVE_INFINITY)); 84 assertFalse(Number.isInteger(1/0)); 85 assertFalse(Number.isInteger(-1/0)); 86 assertFalse(Number.isInteger(Number.EPSILON)); 87 88 assertFalse(Number.isSafeInteger({})); 89 assertFalse(Number.isSafeInteger([])); 90 assertFalse(Number.isSafeInteger("s")); 91 assertFalse(Number.isSafeInteger(null)); 92 assertFalse(Number.isSafeInteger(undefined)); 93 assertFalse(Number.isSafeInteger(new Number(2))); 94 assertTrue(Number.isSafeInteger(0)); 95 assertTrue(Number.isSafeInteger(Number.MIN_SAFE_INTEGER)); 96 assertFalse(Number.isSafeInteger(Number.MIN_SAFE_INTEGER - 13)); 97 assertTrue(Number.isSafeInteger(Number.MIN_SAFE_INTEGER + 13)); 98 assertTrue(Number.isSafeInteger(Number.MAX_SAFE_INTEGER)); 99 assertFalse(Number.isSafeInteger(Number.MAX_SAFE_INTEGER + 23)); 100 assertTrue(Number.isSafeInteger(Number.MAX_SAFE_INTEGER - 23)); 101 assertFalse(Number.isSafeInteger(Number.MIN_VALUE)); 102 assertFalse(Number.isSafeInteger(Number.MAX_VALUE)); 103 assertFalse(Number.isSafeInteger(Number.NaN)); 104 assertFalse(Number.isSafeInteger(Number.POSITIVE_INFINITY)); 105 assertFalse(Number.isSafeInteger(Number.NEGATIVE_INFINITY)); 106 assertFalse(Number.isSafeInteger(1/0)); 107 assertFalse(Number.isSafeInteger(-1/0)); 108 assertFalse(Number.isSafeInteger(Number.EPSILON)); 109 110 var near_upper = Math.pow(2, 52); 111 assertTrue(Number.isSafeInteger(near_upper)); 112 assertFalse(Number.isSafeInteger(2 * near_upper)); 113 assertTrue(Number.isSafeInteger(2 * near_upper - 1)); 114 assertTrue(Number.isSafeInteger(2 * near_upper - 2)); 115 assertFalse(Number.isSafeInteger(2 * near_upper + 1)); 116 assertFalse(Number.isSafeInteger(2 * near_upper + 2)); 117 assertFalse(Number.isSafeInteger(2 * near_upper + 7)); 118 119 var near_lower = -near_upper; 120 assertTrue(Number.isSafeInteger(near_lower)); 121 assertFalse(Number.isSafeInteger(2 * near_lower)); 122 assertTrue(Number.isSafeInteger(2 * near_lower + 1)); 123 assertTrue(Number.isSafeInteger(2 * near_lower + 2)); 124 assertFalse(Number.isSafeInteger(2 * near_lower - 1)); 125 assertFalse(Number.isSafeInteger(2 * near_lower - 2)); 126 assertFalse(Number.isSafeInteger(2 * near_lower - 7)); 127
