src/third_party/mozjs-45/js/src/tests/ecma/Expressions/11.3.2.js

/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */


/**
   File Name:          11.3.2.js
   ECMA Section:       11.3.2 Postfix decrement operator
   Description:

   11.3.2 Postfix decrement operator

   The production MemberExpression : MemberExpression -- is evaluated as follows:
   1.  Evaluate MemberExpression.
   2.  Call GetValue(Result(1)).
   3.  Call ToNumber(Result(2)).
   4.  Subtract the value 1 from Result(3), using the same rules as for the -
   operator (section 0).
   5.  Call PutValue(Result(1), Result(4)).
   6.  Return Result(3).

   Author:             christine@netscape.com
   Date:               12 november 1997
*/
var SECTION = "11.3.2";
var VERSION = "ECMA_1";
startTest();

writeHeaderToLog( SECTION + " Postfix decrement operator");

// special numbers
new TestCase( SECTION,  "var MYVAR; MYVAR--",                       NaN,                            eval("var MYVAR; MYVAR--") );
new TestCase( SECTION,  "var MYVAR= void 0; MYVAR--",               NaN,                            eval("var MYVAR=void 0; MYVAR--") );
new TestCase( SECTION,  "var MYVAR=null; MYVAR--",                  0,                            eval("var MYVAR=null; MYVAR--") );
new TestCase( SECTION,  "var MYVAR=true; MYVAR--",                  1,                            eval("var MYVAR=true; MYVAR--") );
new TestCase( SECTION,  "var MYVAR=false; MYVAR--",                 0,                            eval("var MYVAR=false; MYVAR--") );

// verify return value

new TestCase( SECTION,    "var MYVAR=Number.POSITIVE_INFINITY;MYVAR--", Number.POSITIVE_INFINITY,   eval("var MYVAR=Number.POSITIVE_INFINITY;MYVAR--") );
new TestCase( SECTION,    "var MYVAR=Number.NEGATIVE_INFINITY;MYVAR--", Number.NEGATIVE_INFINITY,   eval("var MYVAR=Number.NEGATIVE_INFINITY;MYVAR--") );
new TestCase( SECTION,    "var MYVAR=Number.NaN;MYVAR--",               Number.NaN,                 eval("var MYVAR=Number.NaN;MYVAR--") );

// verify value of variable

new TestCase( SECTION,    "var MYVAR=Number.POSITIVE_INFINITY;MYVAR--;MYVAR", Number.POSITIVE_INFINITY,   eval("var MYVAR=Number.POSITIVE_INFINITY;MYVAR--;MYVAR") );
new TestCase( SECTION,    "var MYVAR=Number.NEGATIVE_INFINITY;MYVAR--;MYVAR", Number.NEGATIVE_INFINITY,   eval("var MYVAR=Number.NEGATIVE_INFINITY;MYVAR--;MYVAR") );
new TestCase( SECTION,    "var MYVAR=Number.NaN;MYVAR--;MYVAR",               Number.NaN,                 eval("var MYVAR=Number.NaN;MYVAR--;MYVAR") );

// number primitives
new TestCase( SECTION,    "var MYVAR=0;MYVAR--",            0,          eval("var MYVAR=0;MYVAR--") );
new TestCase( SECTION,    "var MYVAR=0.2345;MYVAR--",       0.2345,     eval("var MYVAR=0.2345;MYVAR--") );
new TestCase( SECTION,    "var MYVAR=-0.2345;MYVAR--",      -0.2345,    eval("var MYVAR=-0.2345;MYVAR--") );

// verify value of variable

new TestCase( SECTION,    "var MYVAR=0;MYVAR--;MYVAR",      -1,         eval("var MYVAR=0;MYVAR--;MYVAR") );
new TestCase( SECTION,    "var MYVAR=0.2345;MYVAR--;MYVAR", -0.7655,    eval("var MYVAR=0.2345;MYVAR--;MYVAR") );
new TestCase( SECTION,    "var MYVAR=-0.2345;MYVAR--;MYVAR", -1.2345,   eval("var MYVAR=-0.2345;MYVAR--;MYVAR") );
new TestCase( SECTION,    "var MYVAR=0;MYVAR--;MYVAR",      -1,   eval("var MYVAR=0;MYVAR--;MYVAR") );
new TestCase( SECTION,    "var MYVAR=0;MYVAR--;MYVAR",      -1,   eval("var MYVAR=0;MYVAR--;MYVAR") );
new TestCase( SECTION,    "var MYVAR=0;MYVAR--;MYVAR",      -1,   eval("var MYVAR=0;MYVAR--;MYVAR") );

// boolean values
// verify return value

new TestCase( SECTION,    "var MYVAR=true;MYVAR--",         1,       eval("var MYVAR=true;MYVAR--") );
new TestCase( SECTION,    "var MYVAR=false;MYVAR--",        0,      eval("var MYVAR=false;MYVAR--") );
// verify value of variable

new TestCase( SECTION,    "var MYVAR=true;MYVAR--;MYVAR",   0,   eval("var MYVAR=true;MYVAR--;MYVAR") );
new TestCase( SECTION,    "var MYVAR=false;MYVAR--;MYVAR",  -1,   eval("var MYVAR=false;MYVAR--;MYVAR") );

// boolean objects
// verify return value

new TestCase( SECTION,    "var MYVAR=new Boolean(true);MYVAR--",         1,     eval("var MYVAR=true;MYVAR--") );
new TestCase( SECTION,    "var MYVAR=new Boolean(false);MYVAR--",        0,     eval("var MYVAR=false;MYVAR--") );
// verify value of variable

new TestCase( SECTION,    "var MYVAR=new Boolean(true);MYVAR--;MYVAR",   0,     eval("var MYVAR=new Boolean(true);MYVAR--;MYVAR") );
new TestCase( SECTION,    "var MYVAR=new Boolean(false);MYVAR--;MYVAR",  -1,     eval("var MYVAR=new Boolean(false);MYVAR--;MYVAR") );

// string primitives
new TestCase( SECTION,    "var MYVAR='string';MYVAR--",         Number.NaN,     eval("var MYVAR='string';MYVAR--") );
new TestCase( SECTION,    "var MYVAR='12345';MYVAR--",          12345,          eval("var MYVAR='12345';MYVAR--") );
new TestCase( SECTION,    "var MYVAR='-12345';MYVAR--",         -12345,         eval("var MYVAR='-12345';MYVAR--") );
new TestCase( SECTION,    "var MYVAR='0Xf';MYVAR--",            15,             eval("var MYVAR='0Xf';MYVAR--") );
new TestCase( SECTION,    "var MYVAR='077';MYVAR--",            77,             eval("var MYVAR='077';MYVAR--") );
new TestCase( SECTION,    "var MYVAR=''; MYVAR--",              0,              eval("var MYVAR='';MYVAR--") );

// verify value of variable

new TestCase( SECTION,    "var MYVAR='string';MYVAR--;MYVAR",   Number.NaN,     eval("var MYVAR='string';MYVAR--;MYVAR") );
new TestCase( SECTION,    "var MYVAR='12345';MYVAR--;MYVAR",    12344,          eval("var MYVAR='12345';MYVAR--;MYVAR") );
new TestCase( SECTION,    "var MYVAR='-12345';MYVAR--;MYVAR",   -12346,          eval("var MYVAR='-12345';MYVAR--;MYVAR") );
new TestCase( SECTION,    "var MYVAR='0xf';MYVAR--;MYVAR",      14,             eval("var MYVAR='0xf';MYVAR--;MYVAR") );
new TestCase( SECTION,    "var MYVAR='077';MYVAR--;MYVAR",      76,             eval("var MYVAR='077';MYVAR--;MYVAR") );
new TestCase( SECTION,    "var MYVAR='';MYVAR--;MYVAR",         -1,              eval("var MYVAR='';MYVAR--;MYVAR") );

// string objects
new TestCase( SECTION,    "var MYVAR=new String('string');MYVAR--",         Number.NaN,     eval("var MYVAR=new String('string');MYVAR--") );
new TestCase( SECTION,    "var MYVAR=new String('12345');MYVAR--",          12345,          eval("var MYVAR=new String('12345');MYVAR--") );
new TestCase( SECTION,    "var MYVAR=new String('-12345');MYVAR--",         -12345,         eval("var MYVAR=new String('-12345');MYVAR--") );
new TestCase( SECTION,    "var MYVAR=new String('0Xf');MYVAR--",            15,             eval("var MYVAR=new String('0Xf');MYVAR--") );
new TestCase( SECTION,    "var MYVAR=new String('077');MYVAR--",            77,             eval("var MYVAR=new String('077');MYVAR--") );
new TestCase( SECTION,    "var MYVAR=new String(''); MYVAR--",              0,              eval("var MYVAR=new String('');MYVAR--") );

// verify value of variable

new TestCase( SECTION,    "var MYVAR=new String('string');MYVAR--;MYVAR",   Number.NaN,     eval("var MYVAR=new String('string');MYVAR--;MYVAR") );
new TestCase( SECTION,    "var MYVAR=new String('12345');MYVAR--;MYVAR",    12344,          eval("var MYVAR=new String('12345');MYVAR--;MYVAR") );
new TestCase( SECTION,    "var MYVAR=new String('-12345');MYVAR--;MYVAR",   -12346,          eval("var MYVAR=new String('-12345');MYVAR--;MYVAR") );
new TestCase( SECTION,    "var MYVAR=new String('0xf');MYVAR--;MYVAR",      14,             eval("var MYVAR=new String('0xf');MYVAR--;MYVAR") );
new TestCase( SECTION,    "var MYVAR=new String('077');MYVAR--;MYVAR",      76,             eval("var MYVAR=new String('077');MYVAR--;MYVAR") );
new TestCase( SECTION,    "var MYVAR=new String('');MYVAR--;MYVAR",         -1,              eval("var MYVAR=new String('');MYVAR--;MYVAR") );

test();