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23
24description(
25"This test checks the behavior of the reduce() method on a number of objects."
26);
27
28function toObject(array) {
29    var o = {};
30    for (var i in array)
31        o[i] = array[i];
32    o.length = array.length;
33    o.reduce = Array.prototype.reduce;
34    return o;
35}
36function toUnorderedObject(array) {
37    var o = {};
38    var props = [];
39    for (var i in array)
40        props.push(i);
41    for (var i = props.length - 1; i >= 0; i--)
42        o[props[i]] = array[props[i]];
43    o.length = array.length;
44    o.reduce = Array.prototype.reduce;
45    return o;
46}
47
48shouldBe("[0,1,2,3].reduce(function(a,b){ return a + b; })", "6");
49shouldBe("[1,2,3].reduce(function(a,b){ return a + b; })", "6");
50shouldBe("[0,1,2,3].reduce(function(a,b){ return a + b; }, 4)", "10");
51shouldBe("[1,2,3].reduce(function(a,b){ return a + b; }, 4)", "10");
52shouldBe("toObject([0,1,2,3]).reduce(function(a,b){ return a + b; })", "6");
53shouldBe("toObject([1,2,3]).reduce(function(a,b){ return a + b; })", "6");
54shouldBe("toObject([0,1,2,3]).reduce(function(a,b){ return a + b; }, 4)", "10");
55shouldBe("toObject([1,2,3]).reduce(function(a,b){ return a + b; }, 4)", "10");
56shouldBe("toUnorderedObject([0,1,2,3]).reduce(function(a,b){ return a + b; })", "6");
57shouldBe("toUnorderedObject([1,2,3]).reduce(function(a,b){ return a + b; })", "6");
58shouldBe("toUnorderedObject([0,1,2,3]).reduce(function(a,b){ return a + b; }, 4)", "10");
59shouldBe("toUnorderedObject([1,2,3]).reduce(function(a,b){ return a + b; }, 4)", "10");
60sparseArray = [];
61sparseArray[10] = 10;
62shouldBe("sparseArray.reduce(function(a,b){ return a + b; }, 0)", "10");
63shouldBe("toObject(sparseArray).reduce(function(a,b){ return a + b; }, 0)", "10");
64var callCount = 0;
65shouldBe("sparseArray.reduce(function(a,b){ callCount++; }); callCount", "0");
66callCount = 0;
67shouldBe("toObject(sparseArray).reduce(function(a,b){ callCount++; }); callCount", "0");
68var callCount = 0;
69shouldBe("sparseArray.reduce(function(a,b){ callCount++; }, 0); callCount", "1");
70callCount = 0;
71shouldBe("toObject(sparseArray).reduce(function(a,b){ callCount++; }, 0); callCount", "1");
72callCount = 0;
73shouldBe("[0,1,2,3,4].reduce(function(a,b){ callCount++; }, 0); callCount", "5");
74callCount = 0;
75shouldBe("[0,1,2,3,4].reduce(function(a,b){ callCount++; }); callCount", "4");
76callCount = 0;
77shouldBe("[1, 2, 3, 4].reduce(function(a,b, i, thisObj){ thisObj.length--; callCount++; return a + b; }, 0); callCount", "2");
78callCount = 0;
79shouldBe("[1, 2, 3, 4].reduce(function(a,b, i, thisObj){ thisObj.length++; callCount++; return a + b; }, 0); callCount", "4");
80callCount = 0;
81shouldBe("toObject([1, 2, 3, 4]).reduce(function(a,b, i, thisObj){ thisObj.length--; callCount++; return a + b; }, 0); callCount", "4");
82callCount = 0;
83shouldBe("toObject([1, 2, 3, 4]).reduce(function(a,b, i, thisObj){ thisObj.length++; callCount++; return a + b; }, 0); callCount", "4");
84
85shouldBe("[[0,1], [2,3], [4,5]].reduce(function(a,b) {return a.concat(b);}, [])", "[0,1,2,3,4,5]");
86shouldBe("toObject([[0,1], [2,3], [4,5]]).reduce(function(a,b) {return a.concat(b);}, [])", "[0,1,2,3,4,5]");
87shouldBe("toObject([0,1,2,3,4,5]).reduce(function(a,b,i) {return a.concat([i,b]);}, [])", "[0,0,1,1,2,2,3,3,4,4,5,5]");
88shouldBe("toUnorderedObject([[0,1], [2,3], [4,5]]).reduce(function(a,b) {return a.concat(b);}, [])", "[0,1,2,3,4,5]");
89shouldBe("toUnorderedObject([0,1,2,3,4,5]).reduce(function(a,b,i) {return a.concat([i,b]);}, [])", "[0,0,1,1,2,2,3,3,4,4,5,5]");
90shouldBe("[0,1,2,3,4,5].reduce(function(a,b,i) {return a.concat([i,b]);}, [])", "[0,0,1,1,2,2,3,3,4,4,5,5]");
91shouldBe("[2,3].reduce(function() {'use strict'; return this;})", "undefined");
92