JezK
Edit File: parse-int-float.js
// Copyright 2008 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. assertEquals(0, parseInt('0')); assertEquals(0, parseInt(' 0')); assertEquals(0, parseInt(' 0 ')); assertEquals(63, parseInt('077')); assertEquals(63, parseInt(' 077')); assertEquals(63, parseInt(' 077 ')); assertEquals(-63, parseInt(' -077')); assertEquals(3, parseInt('11', 2)); assertEquals(4, parseInt('11', 3)); assertEquals(4, parseInt('11', 3.8)); assertEquals(0x12, parseInt('0x12')); assertEquals(0x12, parseInt('0x12', 16)); assertEquals(0x12, parseInt('0x12', 16.1)); assertEquals(0x12, parseInt('0x12', NaN)); assertTrue(isNaN(parseInt('0x '))); assertTrue(isNaN(parseInt('0x'))); assertTrue(isNaN(parseInt('0x ', 16))); assertTrue(isNaN(parseInt('0x', 16))); assertEquals(12, parseInt('12aaa')); assertEquals(0.1, parseFloat('0.1')); assertEquals(0.1, parseFloat('0.1aaa')); assertEquals(0, parseFloat('0aaa')); assertEquals(0, parseFloat('0x12')); assertEquals(77, parseFloat('077')); assertEquals(Infinity, parseInt('1000000000000000000000000000000000000000000000' + '000000000000000000000000000000000000000000000000000000000000000000000000' + '000000000000000000000000000000000000000000000000000000000000000000000000' + '000000000000000000000000000000000000000000000000000000000000000000000000' + '000000000000000000000000000000000000000000000000000000000000000000000000' + '0000000000000')); assertEquals(Infinity, parseInt('0x10000000000000000000000000000000000000000000' + '000000000000000000000000000000000000000000000000000000000000000000000000' + '000000000000000000000000000000000000000000000000000000000000000000000000' + '000000000000000000000000000000000000000000000000000000000000000000000000' + '000000000000000000000000000000000000000000000000000000000000000000000000' + '0000000000000')); var i; var y = 10; for (i = 1; i < 21; i++) { var x = eval("1.2e" + i); assertEquals(Math.floor(x), parseInt(x)); x = eval("1e" + i); assertEquals(x, y); y *= 10; assertEquals(Math.floor(x), parseInt(x)); x = eval("-1e" + i); assertEquals(Math.ceil(x), parseInt(x)); x = eval("-1.2e" + i); assertEquals(Math.ceil(x), parseInt(x)); } for (i = 21; i < 53; i++) { var x = eval("1e" + i); assertEquals(1, parseInt(x)); x = eval("-1e" + i); assertEquals(-1, parseInt(x)); } assertTrue(isNaN(parseInt(0/0))); assertTrue(isNaN(parseInt(1/0)), "parseInt Infinity"); assertTrue(isNaN(parseInt(-1/0)), "parseInt -Infinity"); assertTrue(isNaN(parseFloat(0/0))); assertEquals(Infinity, parseFloat(1/0), "parseFloat Infinity"); assertEquals(-Infinity, parseFloat(-1/0), "parseFloat -Infinity"); var state; var throwingRadix = { valueOf: function() { state = "throwingRadix"; throw null; } }; var throwingString = { toString: function() { state = "throwingString"; throw null; } }; state = null; try { parseInt('123', throwingRadix); } catch (e) {} assertEquals(state, "throwingRadix"); state = null; try { parseInt(throwingString, 10); } catch (e) {} assertEquals(state, "throwingString"); state = null; try { parseInt(throwingString, throwingRadix); } catch (e) {} assertEquals(state, "throwingString");