123 lines
5.9 KiB
JavaScript
123 lines
5.9 KiB
JavaScript
description(
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"This test checks the behavior of the various array enumeration functions in certain edge case scenarios"
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);
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var functions = ["every", "forEach", "some", "filter", "reduce", "map", "reduceRight"];
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var forwarders = [
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function(elem, index, array) { return currentFunc.call(this, elem, index, array); },
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function(elem, index, array) { return currentFunc.call(this, elem, index, array); },
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function(elem, index, array) { return currentFunc.call(this, elem, index, array); },
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function(elem, index, array) { return currentFunc.call(this, elem, index, array); },
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function(prev, elem, index, array) { return currentFunc.call(this, elem, index, array); },
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function(elem, index, array) { return currentFunc.call(this, elem, index, array); },
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function(prev, elem, index, array) { return currentFunc.call(this, elem, index, array); }
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];
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function toObject(array) {
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var o = {};
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for (var i in array)
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o[i] = array[i];
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o.length = array.length;
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return o;
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}
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function toUnorderedObject(array) {
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var o = {};
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var props = [];
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for (var i in array)
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props.push(i);
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for (var i = props.length - 1; i >= 0; i--)
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o[props[i]] = array[props[i]];
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o.length = array.length;
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return o;
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}
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function returnFalse() { count++; return false; }
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function returnTrue() { count++; return true; }
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function returnElem(elem) { count++; return elem; }
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function returnIndex(a, index) { if (lastIndex >= index) throw "Unordered traversal"; lastIndex = index; count++; return index; }
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function increaseLength(a, b, array) { count++; array.length++; }
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function decreaseLength(a, b, array) { count++; array.length--; }
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function halveLength(a, b, array) { count++; if (!array.halved) array.length = (array.length / 2) | 0; array.halved = true; }
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var testFunctions = ["returnFalse", "returnTrue", "returnElem", "returnIndex", "increaseLength", "decreaseLength", "halveLength"];
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var simpleArray = [0,1,2,3,4,5];
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var emptyArray = [];
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var largeEmptyArray = new Array(300);
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var largeSparseArray = [0,1,2,3,4,5];
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largeSparseArray[299] = 299;
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var arrays = ["simpleArray", "emptyArray", "largeEmptyArray", "largeSparseArray"];
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function copyArray(a) {
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var g = [];
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for (var i in a)
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g[i] = a[i];
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return g;
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}
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// Test object and array behaviour matches
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for (var f = 0; f < functions.length; f++) {
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for (var t = 0; t < testFunctions.length; t++) {
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for (var a = 0; a < arrays.length; a++) {
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var functionName = functions[f];
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currentFunc = this[testFunctions[t]];
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if (arrays[a] === "largeEmptyArray" && functionName === "map")
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continue;
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if (currentFunc === returnIndex && functionName === "reduceRight")
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continue;
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shouldBe("count=0;lastIndex=-1;copyArray("+arrays[a]+")."+functionName+"(forwarders[f], "+testFunctions[t]+", 0)",
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"count=0;lastIndex=-1;Array.prototype."+functionName+".call(toObject("+arrays[a]+"), forwarders[f], "+testFunctions[t]+", 0)");
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}
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}
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}
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// Test unordered object and array behaviour matches
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for (var f = 0; f < functions.length; f++) {
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for (var t = 0; t < testFunctions.length; t++) {
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for (var a = 0; a < arrays.length; a++) {
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var functionName = functions[f];
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currentFunc = this[testFunctions[t]];
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if (arrays[a] === "largeEmptyArray" && functionName === "map")
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continue;
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if (currentFunc === returnIndex && functionName === "reduceRight")
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continue;
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shouldBe("count=0;lastIndex=-1;copyArray("+arrays[a]+")."+functionName+"(forwarders[f], "+testFunctions[t]+", 0)",
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"count=0;lastIndex=-1;Array.prototype."+functionName+".call(toUnorderedObject("+arrays[a]+"), forwarders[f], "+testFunctions[t]+", 0)");
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}
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}
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}
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// Test number of function calls
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var callCounts = [
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[[1,0,0,1],[6,0,0,7],[1,0,0,1],[1,0,0,1],[1,0,0,1],[1,0,0,1],[1,0,0,1]],
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[[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[3,0,0,6],[3,0,0,6]],
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[[6,0,0,7],[1,0,0,1],[2,0,0,2],[2,0,0,2],[6,0,0,7],[3,0,0,6],[3,0,0,6]],
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[[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[3,0,0,6],[3,0,0,6]],
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[[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[3,0,0,6],[3,0,0,6]],
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[[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[3,0,0,6],[3,0,0,6]],
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[[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[4,0,0,7]]
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];
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var objCallCounts = [
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[[1,0,0,1],[6,0,0,7],[1,0,0,1],[1,0,0,1],[1,0,0,1],[1,0,0,1],[1,0,0,1]],
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[[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7]],
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[[6,0,0,7],[1,0,0,1],[2,0,0,2],[2,0,0,2],[6,0,0,7],[6,0,0,7],[6,0,0,7]],
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[[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7]],
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[[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7]],
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[[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7]],
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[[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7],[6,0,0,7]]
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];
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for (var f = 0; f < functions.length; f++) {
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for (var t = 0; t < testFunctions.length; t++) {
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for (var a = 0; a < arrays.length; a++) {
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var functionName = functions[f];
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currentFunc = this[testFunctions[t]];
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if (currentFunc === returnIndex && functionName === "reduceRight")
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continue;
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var expectedCnt = "" + callCounts[f][t][a];
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shouldBe("count=0;lastIndex=-1;copyArray("+arrays[a]+")."+functionName+"(forwarders[f], "+testFunctions[t]+", 0); count", expectedCnt);
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var expectedCnt = "" + objCallCounts[f][t][a];
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shouldBe("count=0;lastIndex=-1;Array.prototype."+functionName+".call(toObject("+arrays[a]+"), forwarders[f], "+testFunctions[t]+", 0); count", expectedCnt);
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shouldBe("count=0;lastIndex=-1;Array.prototype."+functionName+".call(toObject("+arrays[a]+"), forwarders[f], "+testFunctions[t]+", 0); count", expectedCnt);
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}
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}
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}
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