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39 gTestfile = '11.13.2-4.js';
42 File Name: 11.13.2-4.js
43 ECMA Section: 11.13.2 Compound Assignment:+=
46 *= /= %= += -= <<= >>= >>>= &= ^= |=
48 11.13.2 Compound assignment ( op= )
50 The production AssignmentExpression :
51 LeftHandSideExpression @ = AssignmentExpression, where @ represents one of
52 the operators indicated above, is evaluated as follows:
54 1. Evaluate LeftHandSideExpression.
55 2. Call GetValue(Result(1)).
56 3. Evaluate AssignmentExpression.
57 4. Call GetValue(Result(3)).
58 5. Apply operator @ to Result(2) and Result(4).
59 6. Call PutValue(Result(1), Result(5)).
62 Author: christine@netscape.com
63 Date: 12 november 1997
65 var SECTION = "11.13.2-4";
66 var VERSION = "ECMA_1";
69 writeHeaderToLog( SECTION + " Compound Assignment: +=");
71 // If either operand is NaN, result is NaN
73 new TestCase( SECTION, "VAR1 = NaN; VAR2=1; VAR1 += VAR2", Number.NaN, eval("VAR1 = Number.NaN; VAR2=1; VAR1 += VAR2") );
74 new TestCase( SECTION, "VAR1 = NaN; VAR2=1; VAR1 += VAR2; VAR1", Number.NaN, eval("VAR1 = Number.NaN; VAR2=1; VAR1 += VAR2; VAR1") );
75 new TestCase( SECTION, "VAR1 = NaN; VAR2=0; VAR1 += VAR2", Number.NaN, eval("VAR1 = Number.NaN; VAR2=0; VAR1 += VAR2") );
76 new TestCase( SECTION, "VAR1 = NaN; VAR2=0; VAR1 += VAR2; VAR1", Number.NaN, eval("VAR1 = Number.NaN; VAR2=0; VAR1 += VAR2; VAR1") );
77 new TestCase( SECTION, "VAR1 = 0; VAR2=NaN; VAR1 += VAR2", Number.NaN, eval("VAR1 = 0; VAR2=Number.NaN; VAR1 += VAR2") );
78 new TestCase( SECTION, "VAR1 = 0; VAR2=NaN; VAR1 += VAR2; VAR1", Number.NaN, eval("VAR1 = 0; VAR2=Number.NaN; VAR1 += VAR2; VAR1") );
80 // the sum of two Infinities the same sign is the infinity of that sign
81 // the sum of two Infinities of opposite sign is NaN
83 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") );
84 new TestCase( SECTION, "VAR1 = Infinity; VAR2= -Infinity; VAR1 += VAR2; VAR1", Number.NaN, eval("VAR1 = Number.POSITIVE_INFINITY; VAR2 = Number.NEGATIVE_INFINITY; VAR1 += VAR2; VAR1") );
85 new TestCase( SECTION, "VAR1 =-Infinity; VAR2= Infinity; VAR1 += VAR2; VAR1", Number.NaN, eval("VAR1 = Number.NEGATIVE_INFINITY; VAR2 = Number.POSITIVE_INFINITY; VAR1 += VAR2; VAR1") );
86 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") );
88 // the sum of an infinity and a finite value is equal to the infinite operand
90 new TestCase( SECTION, "VAR1 = 0; VAR2= Infinity; VAR1 += VAR2;VAR1", Number.POSITIVE_INFINITY, eval("VAR1 = 0; VAR2 = Number.POSITIVE_INFINITY; VAR1 += VAR2; VAR1") );
91 new TestCase( SECTION, "VAR1 = -0; VAR2= Infinity; VAR1 += VAR2;VAR1", Number.POSITIVE_INFINITY, eval("VAR1 = -0; VAR2 = Number.POSITIVE_INFINITY; VAR1 += VAR2; VAR1") );
92 new TestCase( SECTION, "VAR1 = -0; VAR2= -Infinity; VAR1 += VAR2;VAR1", Number.NEGATIVE_INFINITY, eval("VAR1 = -0; VAR2 = Number.NEGATIVE_INFINITY; VAR1 += VAR2; VAR1") );
93 new TestCase( SECTION, "VAR1 = 0; VAR2= -Infinity; VAR1 += VAR2;VAR1", Number.NEGATIVE_INFINITY, eval("VAR1 = 0; VAR2 = Number.NEGATIVE_INFINITY; VAR1 += VAR2; VAR1") );
95 // the sum of two negative zeros is -0. the sum of two positive zeros, or of two zeros of opposite sign, is +0
97 new TestCase( SECTION, "VAR1 = 0; VAR2= 0; VAR1 += VAR2", 0, eval("VAR1 = 0; VAR2 = 0; VAR1 += VAR2; VAR1") );
98 new TestCase( SECTION, "VAR1 = 0; VAR2= -0; VAR1 += VAR2", 0, eval("VAR1 = 0; VAR2 = -0; VAR1 += VAR2; VAR1") );
99 new TestCase( SECTION, "VAR1 = -0; VAR2= 0; VAR1 += VAR2", 0, eval("VAR1 = -0; VAR2 = 0; VAR1 += VAR2; VAR1") );
100 new TestCase( SECTION, "VAR1 = -0; VAR2= -0; VAR1 += VAR2", -0, eval("VAR1 = -0; VAR2 = -0; VAR1 += VAR2; VAR1") );
102 // the sum of a zero and a nonzero finite value is eqal to the nonzero operand
104 new TestCase( SECTION, "VAR1 = 0; VAR2= 1; VAR2 += VAR1; VAR2", 1, eval("VAR1 = 0; VAR2 = 1; VAR2 += VAR1; VAR2") );
105 new TestCase( SECTION, "VAR1 = -0; VAR2= 1; VAR2 += VAR1; VAR2", 1, eval("VAR1 = -0; VAR2 = 1; VAR2 += VAR1; VAR2") );
106 new TestCase( SECTION, "VAR1 = -0; VAR2= -1; VAR2 += VAR1; VAR2", -1, eval("VAR1 = -0; VAR2 = -1; VAR2 += VAR1; VAR2") );
107 new TestCase( SECTION, "VAR1 = 0; VAR2= -1; VAR2 += VAR1; VAR2", -1, eval("VAR1 = 0; VAR2 = -1; VAR2 += VAR1; VAR2") );
109 // the sum of a zero and a nozero finite value is equal to the nonzero operand.
110 new TestCase( SECTION, "VAR1 = 0; VAR2=1; VAR1 += VAR2", 1, eval("VAR1 = 0; VAR2=1; VAR1 += VAR2") );
111 new TestCase( SECTION, "VAR1 = 0; VAR2=1; VAR1 += VAR2;VAR1", 1, eval("VAR1 = 0; VAR2=1; VAR1 += VAR2;VAR1") );
113 // the sum of two nonzero finite values of the same magnitude and opposite sign is +0
114 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") );
115 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") );
118 new TestCase( SECTION, "VAR1 = 10; VAR2 = '0XFF', VAR1 += VAR2", 2550, eval("VAR1 = 10; VAR2 = '0XFF', VAR1 += VAR2") );
119 new TestCase( SECTION, "VAR1 = '0xFF'; VAR2 = 0xA, VAR1 += VAR2", 2550, eval("VAR1 = '0XFF'; VAR2 = 0XA, VAR1 += VAR2") );
121 new TestCase( SECTION, "VAR1 = '10'; VAR2 = '255', VAR1 += VAR2", 2550, eval("VAR1 = '10'; VAR2 = '255', VAR1 += VAR2") );
122 new TestCase( SECTION, "VAR1 = '10'; VAR2 = '0XFF', VAR1 += VAR2", 2550, eval("VAR1 = '10'; VAR2 = '0XFF', VAR1 += VAR2") );
123 new TestCase( SECTION, "VAR1 = '0xFF'; VAR2 = 0xA, VAR1 += VAR2", 2550, eval("VAR1 = '0XFF'; VAR2 = 0XA, VAR1 += VAR2") );
126 new TestCase( SECTION, "VAR1 = true; VAR2 = false; VAR1 += VAR2", 0, eval("VAR1 = true; VAR2 = false; VAR1 += VAR2") );
127 new TestCase( SECTION, "VAR1 = true; VAR2 = true; VAR1 += VAR2", 1, eval("VAR1 = true; VAR2 = true; VAR1 += VAR2") );
130 new TestCase( SECTION, "VAR1 = new Boolean(true); VAR2 = 10; VAR1 += VAR2;VAR1", 10, eval("VAR1 = new Boolean(true); VAR2 = 10; VAR1 += VAR2; VAR1") );
131 new TestCase( SECTION, "VAR1 = new Number(11); VAR2 = 10; VAR1 += VAR2; VAR1", 110, eval("VAR1 = new Number(11); VAR2 = 10; VAR1 += VAR2; VAR1") );
132 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") );
133 new TestCase( SECTION, "VAR1 = new String('15'); VAR2 = new String('0xF'); VAR1 += VAR2", 255, eval("VAR1 = String('15'); VAR2 = new String('0xF'); VAR1 += VAR2") );