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/* -*- 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: 11.9.3.js
ECMA Section: 11.9.3 The equals operator ( == )
Description:
The production EqualityExpression:
EqualityExpression == RelationalExpression is evaluated as follows:
1. Evaluate EqualityExpression.
2. Call GetValue(Result(1)).
3. Evaluate RelationalExpression.
4. Call GetValue(Result(3)).
5. Perform the comparison Result(4) == Result(2). (See section 11.9.3)
6. Return Result(5).
Author: christine@netscape.com
Date: 12 november 1997
*/
var SECTION = "11.9.3";
var VERSION = "ECMA_1";
var BUGNUMBER="77391";
startTest();
writeHeaderToLog( SECTION + " The equals operator ( == )");
// type x and type y are the same. if type x is undefined or null, return true
new TestCase( SECTION, "void 0 = void 0", true, void 0 == void 0 );
new TestCase( SECTION, "null == null", true, null == null );
// if x is NaN, return false. if y is NaN, return false.
new TestCase( SECTION, "NaN == NaN", false, Number.NaN == Number.NaN );
new TestCase( SECTION, "NaN == 0", false, Number.NaN == 0 );
new TestCase( SECTION, "0 == NaN", false, 0 == Number.NaN );
new TestCase( SECTION, "NaN == Infinity", false, Number.NaN == Number.POSITIVE_INFINITY );
new TestCase( SECTION, "Infinity == NaN", false, Number.POSITIVE_INFINITY == Number.NaN );
// if x is the same number value as y, return true.
new TestCase( SECTION, "Number.MAX_VALUE == Number.MAX_VALUE", true, Number.MAX_VALUE == Number.MAX_VALUE );
new TestCase( SECTION, "Number.MIN_VALUE == Number.MIN_VALUE", true, Number.MIN_VALUE == Number.MIN_VALUE );
new TestCase( SECTION, "Number.POSITIVE_INFINITY == Number.POSITIVE_INFINITY", true, Number.POSITIVE_INFINITY == Number.POSITIVE_INFINITY );
new TestCase( SECTION, "Number.NEGATIVE_INFINITY == Number.NEGATIVE_INFINITY", true, Number.NEGATIVE_INFINITY == Number.NEGATIVE_INFINITY );
// if xis 0 and y is -0, return true. if x is -0 and y is 0, return true.
new TestCase( SECTION, "0 == 0", true, 0 == 0 );
new TestCase( SECTION, "0 == -0", true, 0 == -0 );
new TestCase( SECTION, "-0 == 0", true, -0 == 0 );
new TestCase( SECTION, "-0 == -0", true, -0 == -0 );
// return false.
new TestCase( SECTION, "0.9 == 1", false, 0.9 == 1 );
new TestCase( SECTION, "0.999999 == 1", false, 0.999999 == 1 );
new TestCase( SECTION, "0.9999999999 == 1", false, 0.9999999999 == 1 );
new TestCase( SECTION, "0.9999999999999 == 1", false, 0.9999999999999 == 1 );
// type x and type y are the same type, but not numbers.
// x and y are strings. return true if x and y are exactly the same sequence of characters.
// otherwise, return false.
new TestCase( SECTION, "'hello' == 'hello'", true, "hello" == "hello" );
// x and y are booleans. return true if both are true or both are false.
new TestCase( SECTION, "true == true", true, true == true );
new TestCase( SECTION, "false == false", true, false == false );
new TestCase( SECTION, "true == false", false, true == false );
new TestCase( SECTION, "false == true", false, false == true );
// return true if x and y refer to the same object. otherwise return false.
new TestCase( SECTION, "new MyObject(true) == new MyObject(true)", false, new MyObject(true) == new MyObject(true) );
new TestCase( SECTION, "new Boolean(true) == new Boolean(true)", false, new Boolean(true) == new Boolean(true) );
new TestCase( SECTION, "new Boolean(false) == new Boolean(false)", false, new Boolean(false) == new Boolean(false) );
new TestCase( SECTION, "x = new MyObject(true); y = x; z = x; z == y", true, eval("x = new MyObject(true); y = x; z = x; z == y") );
new TestCase( SECTION, "x = new MyObject(false); y = x; z = x; z == y", true, eval("x = new MyObject(false); y = x; z = x; z == y") );
new TestCase( SECTION, "x = new Boolean(true); y = x; z = x; z == y", true, eval("x = new Boolean(true); y = x; z = x; z == y") );
new TestCase( SECTION, "x = new Boolean(false); y = x; z = x; z == y", true, eval("x = new Boolean(false); y = x; z = x; z == y") );
new TestCase( SECTION, "new Boolean(true) == new Boolean(true)", false, new Boolean(true) == new Boolean(true) );
new TestCase( SECTION, "new Boolean(false) == new Boolean(false)", false, new Boolean(false) == new Boolean(false) );
// if x is null and y is undefined, return true. if x is undefined and y is null return true.
new TestCase( SECTION, "null == void 0", true, null == void 0 );
new TestCase( SECTION, "void 0 == null", true, void 0 == null );
// if type(x) is Number and type(y) is string, return the result of the comparison x == ToNumber(y).
new TestCase( SECTION, "1 == '1'", true, 1 == '1' );
new TestCase( SECTION, "255 == '0xff'", true, 255 == '0xff' );
new TestCase( SECTION, "0 == '\r'", true, 0 == "\r" );
new TestCase( SECTION, "1e19 == '1e19'", true, 1e19 == "1e19" );
new TestCase( SECTION, "new Boolean(true) == true", true, true == new Boolean(true) );
new TestCase( SECTION, "new MyObject(true) == true", true, true == new MyObject(true) );
new TestCase( SECTION, "new Boolean(false) == false", true, new Boolean(false) == false );
new TestCase( SECTION, "new MyObject(false) == false", true, new MyObject(false) == false );
new TestCase( SECTION, "true == new Boolean(true)", true, true == new Boolean(true) );
new TestCase( SECTION, "true == new MyObject(true)", true, true == new MyObject(true) );
new TestCase( SECTION, "false == new Boolean(false)", true, false == new Boolean(false) );
new TestCase( SECTION, "false == new MyObject(false)", true, false == new MyObject(false) );
test();
function MyObject( value ) {
this.value = value;
this.valueOf = new Function( "return this.value" );
}
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