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23
24description(
25"This test checks the behavior of the every() method on Array objects."
26);
27
28debug("1.0 Single Argument Testing");
29function isBigEnough(element, index, array) {
30    return (element >= 10);
31}
32shouldBeFalse("[12, 5, 8, 130, 44].every(isBigEnough)");
33shouldBeTrue("[12, 54, 18, 130, 44].every(isBigEnough)");
34debug("");
35
36debug("2.0 Two Argument Testing");
37var predicate = {
38    comparison:     11,
39    isBigEnough:    function(s) {
40                        return (s >= comparison);
41                    }
42};
43shouldBeFalse("[12, 5, 10, 130, 44].every(isBigEnough, predicate)");
44shouldBeTrue("[12, 54, 18, 130, 44].every(isBigEnough, predicate)");
45debug("");
46
47debug("3.0 Array Mutation Tests");
48debug("");
49
50debug("3.1 Array Element Removal");
51function isBigEnoughAndPop(element, index, array) {
52    array.pop();
53    return (element >= 10);
54}
55shouldBeFalse("[12, 5, 8, 130, 44].every(isBigEnoughAndPop)");
56shouldBeTrue("[12, 54, 18, 130, 44].every(isBigEnoughAndPop)");
57debug("");
58
59debug("3.2 Array Element Changing");
60function isBigEnoughAndChange(element, index, array) {
61    array[array.length-1-index]= 5;
62    return (element >= 10);
63}
64shouldBeFalse("[12, 5, 8, 130, 44].every(isBigEnoughAndChange)");
65shouldBeFalse("[12, 54, 18, 130, 44].every(isBigEnoughAndChange)");
66debug("");
67
68debug("3.3 Array Element Addition");
69function isBigEnoughAndPush(element, index, array) {
70    array.push(131);
71    return (element >= 131);
72}
73shouldBeFalse("[12, 5, 8, 130, 44].every(isBigEnoughAndPush)");
74shouldBeFalse("[12, 54, 18, 130, 44].every(isBigEnoughAndPush)");
75debug("");
76
77debug("4.0 Exception Test");
78function isBigEnoughAndException(element, index, array) {
79    if(index==1) throw "exception from function";
80    return (element >= 10);
81}
82shouldThrow("[12, 5, 8, 130, 44].every(isBigEnoughAndException)", '"exception from function"');
83shouldThrow("[12, 54, 18, 130, 44].every(isBigEnoughAndException)", '"exception from function"');
84debug("");
85
86debug("5.0 Wrong Type for Callback Test");
87shouldThrow("[12, 5, 8, 130, 44].every(5)");
88shouldThrow("[12, 5, 8, 130, 44].every('wrong')");
89shouldThrow("[12, 5, 8, 130, 44].every(new Object())");
90shouldThrow("[12, 5, 8, 130, 44].every(null)");
91shouldThrow("[12, 5, 8, 130, 44].every(undefined)");
92shouldThrow("[12, 5, 8, 130, 44].every()");
93debug("");
94
95debug('6.0 Early Exit ("Short Circuiting")');
96var accumulator = new Array();
97function isBigEnoughShortCircuit(element, index, array) {
98    accumulator.push(element);
99    return (element >= 10);
100}
101shouldBeFalse("[12, 5, 8, 130, 44].every(isBigEnoughShortCircuit)");
102shouldBe("accumulator.toString()", "[12, 5].toString()");
103accumulator.length = 0;
104shouldBeTrue("[12, 54, 18, 130, 44].every(isBigEnoughShortCircuit)");
105shouldBe("accumulator.toString()", "[12, 54, 18, 130, 44].toString()");
106debug("");
107
108debug('7.0 Behavior for Holes in Arrays');
109var arr = [5, 5, 5, 5];
110delete arr[1];
111function isNotUndefined(element, index, array) {
112    return typeof element !== "undefined";
113}
114shouldBeTrue("arr.every(isNotUndefined)");
115arr = new Array(20);
116shouldBeTrue("arr.every(isNotUndefined)");
117