| description( |
| "This test checks the behavior of the every() method on Array objects." |
| ); |
| |
| debug("1.0 Single Argument Testing"); |
| function isBigEnough(element, index, array) { |
| return (element >= 10); |
| } |
| shouldBeFalse("[12, 5, 8, 130, 44].every(isBigEnough)"); |
| shouldBeTrue("[12, 54, 18, 130, 44].every(isBigEnough)"); |
| debug(""); |
| |
| debug("2.0 Two Argument Testing"); |
| var predicate = { |
| comparison: 11, |
| isBigEnough: function(s) { |
| return (s >= comparison); |
| } |
| }; |
| shouldBeFalse("[12, 5, 10, 130, 44].every(isBigEnough, predicate)"); |
| shouldBeTrue("[12, 54, 18, 130, 44].every(isBigEnough, predicate)"); |
| debug(""); |
| |
| debug("3.0 Array Mutation Tests"); |
| debug(""); |
| |
| debug("3.1 Array Element Removal"); |
| function isBigEnoughAndPop(element, index, array) { |
| array.pop(); |
| return (element >= 10); |
| } |
| shouldBeFalse("[12, 5, 8, 130, 44].every(isBigEnoughAndPop)"); |
| shouldBeTrue("[12, 54, 18, 130, 44].every(isBigEnoughAndPop)"); |
| debug(""); |
| |
| debug("3.2 Array Element Changing"); |
| function isBigEnoughAndChange(element, index, array) { |
| array[array.length-1-index]= 5; |
| return (element >= 10); |
| } |
| shouldBeFalse("[12, 5, 8, 130, 44].every(isBigEnoughAndChange)"); |
| shouldBeFalse("[12, 54, 18, 130, 44].every(isBigEnoughAndChange)"); |
| debug(""); |
| |
| debug("3.3 Array Element Addition"); |
| function isBigEnoughAndPush(element, index, array) { |
| array.push(131); |
| return (element >= 131); |
| } |
| shouldBeFalse("[12, 5, 8, 130, 44].every(isBigEnoughAndPush)"); |
| shouldBeFalse("[12, 54, 18, 130, 44].every(isBigEnoughAndPush)"); |
| debug(""); |
| |
| debug("4.0 Exception Test"); |
| function isBigEnoughAndException(element, index, array) { |
| if(index==1) throw "exception from function"; |
| return (element >= 10); |
| } |
| shouldThrow("[12, 5, 8, 130, 44].every(isBigEnoughAndException)", '"exception from function"'); |
| shouldThrow("[12, 54, 18, 130, 44].every(isBigEnoughAndException)", '"exception from function"'); |
| debug(""); |
| |
| debug("5.0 Wrong Type for Callback Test"); |
| shouldThrow("[12, 5, 8, 130, 44].every(5)"); |
| shouldThrow("[12, 5, 8, 130, 44].every('wrong')"); |
| shouldThrow("[12, 5, 8, 130, 44].every(new Object())"); |
| shouldThrow("[12, 5, 8, 130, 44].every(null)"); |
| shouldThrow("[12, 5, 8, 130, 44].every(undefined)"); |
| shouldThrow("[12, 5, 8, 130, 44].every()"); |
| debug(""); |
| |
| debug('6.0 Early Exit ("Short Circuiting")'); |
| var accumulator = new Array(); |
| function isBigEnoughShortCircuit(element, index, array) { |
| accumulator.push(element); |
| return (element >= 10); |
| } |
| shouldBeFalse("[12, 5, 8, 130, 44].every(isBigEnoughShortCircuit)"); |
| shouldBe("accumulator.toString()", "[12, 5].toString()"); |
| accumulator.length = 0; |
| shouldBeTrue("[12, 54, 18, 130, 44].every(isBigEnoughShortCircuit)"); |
| shouldBe("accumulator.toString()", "[12, 54, 18, 130, 44].toString()"); |
| debug(""); |
| |
| debug('7.0 Behavior for Holes in Arrays'); |
| var arr = [5, 5, 5, 5]; |
| delete arr[1]; |
| function isNotUndefined(element, index, array) { |
| return typeof element !== "undefined"; |
| } |
| shouldBeTrue("arr.every(isNotUndefined)"); |
| arr = new Array(20); |
| shouldBeTrue("arr.every(isNotUndefined)"); |