tests/mozilla/ecma/Math/15.8.2.10.js

   1 /* The contents of this file are subject to the Netscape Public
   2  * License Version 1.1 (the "License"); you may not use this file
   3  * except in compliance with the License. You may obtain a copy of
   4  * the License at http://www.mozilla.org/NPL/
   5  *
   6  * Software distributed under the License is distributed on an "AS
   7  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
   8  * implied. See the License for the specific language governing
   9  * rights and limitations under the License.
  10  *
  11  * The Original Code is Mozilla Communicator client code, released March
  12  * 31, 1998.
  13  *
  14  * The Initial Developer of the Original Code is Netscape Communications
  15  * Corporation. Portions created by Netscape are
  16  * Copyright (C) 1998 Netscape Communications Corporation. All
  17  * Rights Reserved.
  18  *
  19  * Contributor(s):
  20  *
  21  */
  22 /**
  23     File Name:          15.8.2.10.js
  24     ECMA Section:       15.8.2.10  Math.log(x)
  25     Description:        return an approximiation to the natural logarithm of
  26                         the argument.
  27                         special cases:
  28                         -   if arg is NaN       result is NaN
  29                         -   if arg is <0        result is NaN
  30                         -   if arg is 0 or -0   result is -Infinity
  31                         -   if arg is 1         result is 0
  32                         -   if arg is Infinity  result is Infinity
  33     Author:             christine@netscape.com
  34     Date:               7 july 1997
  35 */
  36
  37     var SECTION = "15.8.2.10";
  38     var VERSION = "ECMA_1";
  39     startTest();
  40     var TITLE   = "Math.log(x)";
  41     var BUGNUMBER = "77391";
  42
  43     writeHeaderToLog( SECTION + " "+ TITLE);
  44
  45     var testcases = getTestCases();
  46     test();
  47
  48 function getTestCases() {
  49     var array = new Array();
  50     var item = 0;
  51
  52     array[item++] = new TestCase( SECTION,   "Math.log.length",         1,              Math.log.length );
  53
  54     array[item++] = new TestCase( SECTION,   "Math.log()",              Number.NaN,     Math.log() );
  55     array[item++] = new TestCase( SECTION,   "Math.log(void 0)",        Number.NaN,     Math.log(void 0) );
  56     array[item++] = new TestCase( SECTION,   "Math.log(null)",          Number.NEGATIVE_INFINITY,   Math.log(null) );
  57     array[item++] = new TestCase( SECTION,   "Math.log(true)",          0,              Math.log(true) );
  58     array[item++] = new TestCase( SECTION,   "Math.log(false)",         -Infinity,      Math.log(false) );
  59     array[item++] = new TestCase( SECTION,   "Math.log('0')",           -Infinity,      Math.log('0') );
  60     array[item++] = new TestCase( SECTION,   "Math.log('1')",           0,              Math.log('1') );
  61     array[item++] = new TestCase( SECTION,   "Math.log('Infinity')",    Infinity,       Math.log("Infinity") );
  62
  63     array[item++] = new TestCase( SECTION,   "Math.log(NaN)",           Number.NaN,     Math.log(Number.NaN) );
  64     array[item++] = new TestCase( SECTION,   "Math.log(-0.0000001)",    Number.NaN,     Math.log(-0.000001)  );
  65     array[item++] = new TestCase( SECTION,   "Math.log(-1)",            Number.NaN,     Math.log(-1)        );
  66     array[item++] = new TestCase( SECTION,   "Math.log(0)",             Number.NEGATIVE_INFINITY,   Math.log(0) );
  67     array[item++] = new TestCase( SECTION,   "Math.log(-0)",            Number.NEGATIVE_INFINITY,   Math.log(-0));
  68     array[item++] = new TestCase( SECTION,   "Math.log(1)",             0,              Math.log(1) );
  69     array[item++] = new TestCase( SECTION,   "Math.log(Infinity)",      Number.POSITIVE_INFINITY,   Math.log(Number.POSITIVE_INFINITY) );
  70     array[item++] = new TestCase( SECTION,   "Math.log(-Infinity)",     Number.NaN,     Math.log(Number.NEGATIVE_INFINITY) );
  71
  72     return ( array );
  73 }
  74 function test() {
  75     for ( tc=0; tc < testcases.length; tc++ ) {
  76         testcases[tc].passed = writeTestCaseResult(
  77                             testcases[tc].expect,
  78                             testcases[tc].actual,
  79                             testcases[tc].description +" = "+
  80                             testcases[tc].actual );
  81
  82         testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value ";
  83     }
  84     stopTest();
  85     return ( testcases );
  86 }