| /* -*- 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: 11.13.2-4.js |
| ECMA Section: 11.13.2 Compound Assignment:+= |
| Description: |
| |
| *= /= %= += -= <<= >>= >>>= &= ^= |= |
| |
| 11.13.2 Compound assignment ( op= ) |
| |
| The production AssignmentExpression : |
| LeftHandSideExpression @ = AssignmentExpression, where @ represents one of |
| the operators indicated above, is evaluated as follows: |
| |
| 1. Evaluate LeftHandSideExpression. |
| 2. Call GetValue(Result(1)). |
| 3. Evaluate AssignmentExpression. |
| 4. Call GetValue(Result(3)). |
| 5. Apply operator @ to Result(2) and Result(4). |
| 6. Call PutValue(Result(1), Result(5)). |
| 7. Return Result(5). |
| |
| Author: christine@netscape.com |
| Date: 12 november 1997 |
| */ |
| var SECTION = "11.13.2-4"; |
| var VERSION = "ECMA_1"; |
| startTest(); |
| |
| writeHeaderToLog( SECTION + " Compound Assignment: +="); |
| |
| // If either operand is NaN, result is NaN |
| |
| new TestCase( SECTION, "VAR1 = NaN; VAR2=1; VAR1 += VAR2", Number.NaN, eval("VAR1 = Number.NaN; VAR2=1; VAR1 += VAR2") ); |
| new TestCase( SECTION, "VAR1 = NaN; VAR2=1; VAR1 += VAR2; VAR1", Number.NaN, eval("VAR1 = Number.NaN; VAR2=1; VAR1 += VAR2; VAR1") ); |
| new TestCase( SECTION, "VAR1 = NaN; VAR2=0; VAR1 += VAR2", Number.NaN, eval("VAR1 = Number.NaN; VAR2=0; VAR1 += VAR2") ); |
| new TestCase( SECTION, "VAR1 = NaN; VAR2=0; VAR1 += VAR2; VAR1", Number.NaN, eval("VAR1 = Number.NaN; VAR2=0; VAR1 += VAR2; VAR1") ); |
| new TestCase( SECTION, "VAR1 = 0; VAR2=NaN; VAR1 += VAR2", Number.NaN, eval("VAR1 = 0; VAR2=Number.NaN; VAR1 += VAR2") ); |
| new TestCase( SECTION, "VAR1 = 0; VAR2=NaN; VAR1 += VAR2; VAR1", Number.NaN, eval("VAR1 = 0; VAR2=Number.NaN; VAR1 += VAR2; VAR1") ); |
| |
| // the sum of two Infinities the same sign is the infinity of that sign |
| // the sum of two Infinities of opposite sign is NaN |
| |
| new TestCase( SECTION, "VAR1 = Infinity; VAR2= Infinity; VAR1 += VAR2; VAR1", Number.POSITIVE_INFINITY, eval("VAR1 = Number.POSITIVE_INFINITY; VAR2 = Number.POSITIVE_INFINITY; VAR1 += VAR2; VAR1") ); |
| new TestCase( SECTION, "VAR1 = Infinity; VAR2= -Infinity; VAR1 += VAR2; VAR1", Number.NaN, eval("VAR1 = Number.POSITIVE_INFINITY; VAR2 = Number.NEGATIVE_INFINITY; VAR1 += VAR2; VAR1") ); |
| new TestCase( SECTION, "VAR1 =-Infinity; VAR2= Infinity; VAR1 += VAR2; VAR1", Number.NaN, eval("VAR1 = Number.NEGATIVE_INFINITY; VAR2 = Number.POSITIVE_INFINITY; VAR1 += VAR2; VAR1") ); |
| new TestCase( SECTION, "VAR1 =-Infinity; VAR2=-Infinity; VAR1 += VAR2; VAR1", Number.NEGATIVE_INFINITY, eval("VAR1 = Number.NEGATIVE_INFINITY; VAR2 = Number.NEGATIVE_INFINITY; VAR1 += VAR2; VAR1") ); |
| |
| // the sum of an infinity and a finite value is equal to the infinite operand |
| |
| new TestCase( SECTION, "VAR1 = 0; VAR2= Infinity; VAR1 += VAR2;VAR1", Number.POSITIVE_INFINITY, eval("VAR1 = 0; VAR2 = Number.POSITIVE_INFINITY; VAR1 += VAR2; VAR1") ); |
| new TestCase( SECTION, "VAR1 = -0; VAR2= Infinity; VAR1 += VAR2;VAR1", Number.POSITIVE_INFINITY, eval("VAR1 = -0; VAR2 = Number.POSITIVE_INFINITY; VAR1 += VAR2; VAR1") ); |
| new TestCase( SECTION, "VAR1 = -0; VAR2= -Infinity; VAR1 += VAR2;VAR1", Number.NEGATIVE_INFINITY, eval("VAR1 = -0; VAR2 = Number.NEGATIVE_INFINITY; VAR1 += VAR2; VAR1") ); |
| new TestCase( SECTION, "VAR1 = 0; VAR2= -Infinity; VAR1 += VAR2;VAR1", Number.NEGATIVE_INFINITY, eval("VAR1 = 0; VAR2 = Number.NEGATIVE_INFINITY; VAR1 += VAR2; VAR1") ); |
| |
| // the sum of two negative zeros is -0. the sum of two positive zeros, or of two zeros of opposite sign, is +0 |
| |
| new TestCase( SECTION, "VAR1 = 0; VAR2= 0; VAR1 += VAR2", 0, eval("VAR1 = 0; VAR2 = 0; VAR1 += VAR2; VAR1") ); |
| new TestCase( SECTION, "VAR1 = 0; VAR2= -0; VAR1 += VAR2", 0, eval("VAR1 = 0; VAR2 = -0; VAR1 += VAR2; VAR1") ); |
| new TestCase( SECTION, "VAR1 = -0; VAR2= 0; VAR1 += VAR2", 0, eval("VAR1 = -0; VAR2 = 0; VAR1 += VAR2; VAR1") ); |
| new TestCase( SECTION, "VAR1 = -0; VAR2= -0; VAR1 += VAR2", -0, eval("VAR1 = -0; VAR2 = -0; VAR1 += VAR2; VAR1") ); |
| |
| // the sum of a zero and a nonzero finite value is eqal to the nonzero operand |
| |
| new TestCase( SECTION, "VAR1 = 0; VAR2= 1; VAR2 += VAR1; VAR2", 1, eval("VAR1 = 0; VAR2 = 1; VAR2 += VAR1; VAR2") ); |
| new TestCase( SECTION, "VAR1 = -0; VAR2= 1; VAR2 += VAR1; VAR2", 1, eval("VAR1 = -0; VAR2 = 1; VAR2 += VAR1; VAR2") ); |
| new TestCase( SECTION, "VAR1 = -0; VAR2= -1; VAR2 += VAR1; VAR2", -1, eval("VAR1 = -0; VAR2 = -1; VAR2 += VAR1; VAR2") ); |
| new TestCase( SECTION, "VAR1 = 0; VAR2= -1; VAR2 += VAR1; VAR2", -1, eval("VAR1 = 0; VAR2 = -1; VAR2 += VAR1; VAR2") ); |
| |
| // the sum of a zero and a nozero finite value is equal to the nonzero operand. |
| new TestCase( SECTION, "VAR1 = 0; VAR2=1; VAR1 += VAR2", 1, eval("VAR1 = 0; VAR2=1; VAR1 += VAR2") ); |
| new TestCase( SECTION, "VAR1 = 0; VAR2=1; VAR1 += VAR2;VAR1", 1, eval("VAR1 = 0; VAR2=1; VAR1 += VAR2;VAR1") ); |
| |
| // the sum of two nonzero finite values of the same magnitude and opposite sign is +0 |
| new TestCase( SECTION, "VAR1 = Number.MAX_VALUE; VAR2= -Number.MAX_VALUE; VAR1 += VAR2; VAR1", 0, eval("VAR1 = Number.MAX_VALUE; VAR2= -Number.MAX_VALUE; VAR1 += VAR2; VAR1") ); |
| new TestCase( SECTION, "VAR1 = Number.MIN_VALUE; VAR2= -Number.MIN_VALUE; VAR1 += VAR2; VAR1", 0, eval("VAR1 = Number.MIN_VALUE; VAR2= -Number.MIN_VALUE; VAR1 += VAR2; VAR1") ); |
| |
| /* |
| new TestCase( SECTION, "VAR1 = 10; VAR2 = '0XFF', VAR1 += VAR2", 2550, eval("VAR1 = 10; VAR2 = '0XFF', VAR1 += VAR2") ); |
| new TestCase( SECTION, "VAR1 = '0xFF'; VAR2 = 0xA, VAR1 += VAR2", 2550, eval("VAR1 = '0XFF'; VAR2 = 0XA, VAR1 += VAR2") ); |
| |
| new TestCase( SECTION, "VAR1 = '10'; VAR2 = '255', VAR1 += VAR2", 2550, eval("VAR1 = '10'; VAR2 = '255', VAR1 += VAR2") ); |
| new TestCase( SECTION, "VAR1 = '10'; VAR2 = '0XFF', VAR1 += VAR2", 2550, eval("VAR1 = '10'; VAR2 = '0XFF', VAR1 += VAR2") ); |
| new TestCase( SECTION, "VAR1 = '0xFF'; VAR2 = 0xA, VAR1 += VAR2", 2550, eval("VAR1 = '0XFF'; VAR2 = 0XA, VAR1 += VAR2") ); |
| |
| // boolean cases |
| new TestCase( SECTION, "VAR1 = true; VAR2 = false; VAR1 += VAR2", 0, eval("VAR1 = true; VAR2 = false; VAR1 += VAR2") ); |
| new TestCase( SECTION, "VAR1 = true; VAR2 = true; VAR1 += VAR2", 1, eval("VAR1 = true; VAR2 = true; VAR1 += VAR2") ); |
| |
| // object cases |
| new TestCase( SECTION, "VAR1 = new Boolean(true); VAR2 = 10; VAR1 += VAR2;VAR1", 10, eval("VAR1 = new Boolean(true); VAR2 = 10; VAR1 += VAR2; VAR1") ); |
| new TestCase( SECTION, "VAR1 = new Number(11); VAR2 = 10; VAR1 += VAR2; VAR1", 110, eval("VAR1 = new Number(11); VAR2 = 10; VAR1 += VAR2; VAR1") ); |
| new TestCase( SECTION, "VAR1 = new Number(11); VAR2 = new Number(10); VAR1 += VAR2", 110, eval("VAR1 = new Number(11); VAR2 = new Number(10); VAR1 += VAR2") ); |
| new TestCase( SECTION, "VAR1 = new String('15'); VAR2 = new String('0xF'); VAR1 += VAR2", 255, eval("VAR1 = String('15'); VAR2 = new String('0xF'); VAR1 += VAR2") ); |
| |
| */ |
| |
| test(); |