JSTests/mozilla/ecma/Expressions/11.4.5.js

/* The contents of this file are subject to the Netscape Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/NPL/
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * The Original Code is Mozilla Communicator client code, released March
 * 31, 1998.
 *
 * The Initial Developer of the Original Code is Netscape Communications
 * Corporation. Portions created by Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Contributor(s): 
 * 
 */
/**
    File Name:          11.4.5.js
    ECMA Section:       11.4.5 Prefix decrement operator
    Description:

    The production UnaryExpression : -- UnaryExpression is evaluated as follows:

     1.Evaluate UnaryExpression.
     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 11.6.3).
     5.Call PutValue(Result(1), Result(4)).

     1.Return Result(4).
    Author:             christine@netscape.com
    Date:               12 november 1997
*/
    var SECTION = "11.4.5";
    var VERSION = "ECMA_1";
    startTest();
    var testcases = getTestCases();

    writeHeaderToLog( SECTION + " Prefix decrement operator");
    test();

function test() {
    for ( tc=0; tc < testcases.length; tc++ ) {
        testcases[tc].passed = writeTestCaseResult(
                            testcases[tc].expect,
                            testcases[tc].actual,
                            testcases[tc].description +" = "+
                            testcases[tc].actual );

        testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value ";
    }
    stopTest();
    return ( testcases );
}
function getTestCases() {
    var array = new Array();
    var item = 0;

    //
    array[item++] = new TestCase( SECTION,  "var MYVAR; --MYVAR",                       NaN,                            eval("var MYVAR; --MYVAR") );
    array[item++] = new TestCase( SECTION,  "var MYVAR= void 0; --MYVAR",               NaN,                            eval("var MYVAR=void 0; --MYVAR") );
    array[item++] = new TestCase( SECTION,  "var MYVAR=null; --MYVAR",                  -1,                            eval("var MYVAR=null; --MYVAR") );
    array[item++] = new TestCase( SECTION,  "var MYVAR=true; --MYVAR",                  0,                            eval("var MYVAR=true; --MYVAR") );
    array[item++] = new TestCase( SECTION,  "var MYVAR=false; --MYVAR",                 -1,                            eval("var MYVAR=false; --MYVAR") );

    // special numbers
    // verify return value

    array[item++] = new TestCase( SECTION,    "var MYVAR=Number.POSITIVE_INFINITY;--MYVAR", Number.POSITIVE_INFINITY,   eval("var MYVAR=Number.POSITIVE_INFINITY;--MYVAR") );
    array[item++] = new TestCase( SECTION,    "var MYVAR=Number.NEGATIVE_INFINITY;--MYVAR", Number.NEGATIVE_INFINITY,   eval("var MYVAR=Number.NEGATIVE_INFINITY;--MYVAR") );
    array[item++] = new TestCase( SECTION,    "var MYVAR=Number.NaN;--MYVAR",               Number.NaN,                 eval("var MYVAR=Number.NaN;--MYVAR") );

    // verify value of variable

    array[item++] = new TestCase( SECTION,    "var MYVAR=Number.POSITIVE_INFINITY;--MYVAR;MYVAR", Number.POSITIVE_INFINITY,   eval("var MYVAR=Number.POSITIVE_INFINITY;--MYVAR;MYVAR") );
    array[item++] = new TestCase( SECTION,    "var MYVAR=Number.NEGATIVE_INFINITY;--MYVAR;MYVAR", Number.NEGATIVE_INFINITY,   eval("var MYVAR=Number.NEGATIVE_INFINITY;--MYVAR;MYVAR") );
    array[item++] = new TestCase( SECTION,    "var MYVAR=Number.NaN;--MYVAR;MYVAR",               Number.NaN,                 eval("var MYVAR=Number.NaN;--MYVAR;MYVAR") );


    // number primitives
    array[item++] = new TestCase( SECTION,    "var MYVAR=0;--MYVAR",            -1,         eval("var MYVAR=0;--MYVAR") );
    array[item++] = new TestCase( SECTION,    "var MYVAR=0.2345;--MYVAR",      -0.7655,     eval("var MYVAR=0.2345;--MYVAR") );
    array[item++] = new TestCase( SECTION,    "var MYVAR=-0.2345;--MYVAR",      -1.2345,    eval("var MYVAR=-0.2345;--MYVAR") );

    // verify value of variable

    array[item++] = new TestCase( SECTION,    "var MYVAR=0;--MYVAR;MYVAR",      -1,         eval("var MYVAR=0;--MYVAR;MYVAR") );
    array[item++] = new TestCase( SECTION,    "var MYVAR=0.2345;--MYVAR;MYVAR", -0.7655,    eval("var MYVAR=0.2345;--MYVAR;MYVAR") );
    array[item++] = new TestCase( SECTION,    "var MYVAR=-0.2345;--MYVAR;MYVAR", -1.2345,   eval("var MYVAR=-0.2345;--MYVAR;MYVAR") );
    array[item++] = new TestCase( SECTION,    "var MYVAR=0;--MYVAR;MYVAR",      -1,   eval("var MYVAR=0;--MYVAR;MYVAR") );
    array[item++] = new TestCase( SECTION,    "var MYVAR=0;--MYVAR;MYVAR",      -1,   eval("var MYVAR=0;--MYVAR;MYVAR") );
    array[item++] = new TestCase( SECTION,    "var MYVAR=0;--MYVAR;MYVAR",      -1,   eval("var MYVAR=0;--MYVAR;MYVAR") );

    // boolean values
    // verify return value

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

    array[item++] = new TestCase( SECTION,    "var MYVAR=true;--MYVAR;MYVAR",   0,   eval("var MYVAR=true;--MYVAR;MYVAR") );
    array[item++] = new TestCase( SECTION,    "var MYVAR=false;--MYVAR;MYVAR",  -1,   eval("var MYVAR=false;--MYVAR;MYVAR") );

    // boolean objects
    // verify return value

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

    array[item++] = new TestCase( SECTION,    "var MYVAR=new Boolean(true);--MYVAR;MYVAR",   0,     eval("var MYVAR=new Boolean(true);--MYVAR;MYVAR") );
    array[item++] = new TestCase( SECTION,    "var MYVAR=new Boolean(false);--MYVAR;MYVAR",  -1,     eval("var MYVAR=new Boolean(false);--MYVAR;MYVAR") );

    // string primitives
    array[item++] = new TestCase( SECTION,    "var MYVAR='string';--MYVAR",         Number.NaN,     eval("var MYVAR='string';--MYVAR") );
    array[item++] = new TestCase( SECTION,    "var MYVAR='12345';--MYVAR",          12344,          eval("var MYVAR='12345';--MYVAR") );
    array[item++] = new TestCase( SECTION,    "var MYVAR='-12345';--MYVAR",         -12346,         eval("var MYVAR='-12345';--MYVAR") );
    array[item++] = new TestCase( SECTION,    "var MYVAR='0Xf';--MYVAR",            14,             eval("var MYVAR='0Xf';--MYVAR") );
    array[item++] = new TestCase( SECTION,    "var MYVAR='077';--MYVAR",            76,             eval("var MYVAR='077';--MYVAR") );
    array[item++] = new TestCase( SECTION,    "var MYVAR=''; --MYVAR",              -1,              eval("var MYVAR='';--MYVAR") );

    // verify value of variable

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

    // string objects
    array[item++] = new TestCase( SECTION,    "var MYVAR=new String('string');--MYVAR",         Number.NaN,     eval("var MYVAR=new String('string');--MYVAR") );
    array[item++] = new TestCase( SECTION,    "var MYVAR=new String('12345');--MYVAR",          12344,          eval("var MYVAR=new String('12345');--MYVAR") );
    array[item++] = new TestCase( SECTION,    "var MYVAR=new String('-12345');--MYVAR",         -12346,         eval("var MYVAR=new String('-12345');--MYVAR") );
    array[item++] = new TestCase( SECTION,    "var MYVAR=new String('0Xf');--MYVAR",            14,             eval("var MYVAR=new String('0Xf');--MYVAR") );
    array[item++] = new TestCase( SECTION,    "var MYVAR=new String('077');--MYVAR",            76,             eval("var MYVAR=new String('077');--MYVAR") );
    array[item++] = new TestCase( SECTION,    "var MYVAR=new String(''); --MYVAR",              -1,              eval("var MYVAR=new String('');--MYVAR") );

    // verify value of variable

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

    return ( array );
}