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Diffstat (limited to 'ecomp-portal-FE/client/bower_components/lodash/vendor/underscore/test/arrays.js')
-rw-r--r-- | ecomp-portal-FE/client/bower_components/lodash/vendor/underscore/test/arrays.js | 555 |
1 files changed, 555 insertions, 0 deletions
diff --git a/ecomp-portal-FE/client/bower_components/lodash/vendor/underscore/test/arrays.js b/ecomp-portal-FE/client/bower_components/lodash/vendor/underscore/test/arrays.js new file mode 100644 index 00000000..748edea4 --- /dev/null +++ b/ecomp-portal-FE/client/bower_components/lodash/vendor/underscore/test/arrays.js @@ -0,0 +1,555 @@ +(function() { + var _ = typeof require == 'function' ? require('..') : window._; + + QUnit.module('Arrays'); + + QUnit.test('first', function(assert) { + assert.equal(_.first([1, 2, 3]), 1, 'can pull out the first element of an array'); + assert.equal(_([1, 2, 3]).first(), 1, 'can perform OO-style "first()"'); + assert.deepEqual(_.first([1, 2, 3], 0), [], 'returns an empty array when n <= 0 (0 case)'); + assert.deepEqual(_.first([1, 2, 3], -1), [], 'returns an empty array when n <= 0 (negative case)'); + assert.deepEqual(_.first([1, 2, 3], 2), [1, 2], 'can fetch the first n elements'); + assert.deepEqual(_.first([1, 2, 3], 5), [1, 2, 3], 'returns the whole array if n > length'); + var result = (function(){ return _.first(arguments); }(4, 3, 2, 1)); + assert.equal(result, 4, 'works on an arguments object'); + result = _.map([[1, 2, 3], [1, 2, 3]], _.first); + assert.deepEqual(result, [1, 1], 'works well with _.map'); + assert.equal(_.first(null), void 0, 'returns undefined when called on null'); + }); + + QUnit.test('head', function(assert) { + assert.strictEqual(_.head, _.first, 'is an alias for first'); + }); + + QUnit.test('take', function(assert) { + assert.strictEqual(_.take, _.first, 'is an alias for first'); + }); + + QUnit.test('rest', function(assert) { + var numbers = [1, 2, 3, 4]; + assert.deepEqual(_.rest(numbers), [2, 3, 4], 'fetches all but the first element'); + assert.deepEqual(_.rest(numbers, 0), [1, 2, 3, 4], 'returns the whole array when index is 0'); + assert.deepEqual(_.rest(numbers, 2), [3, 4], 'returns elements starting at the given index'); + var result = (function(){ return _(arguments).rest(); }(1, 2, 3, 4)); + assert.deepEqual(result, [2, 3, 4], 'works on an arguments object'); + result = _.map([[1, 2, 3], [1, 2, 3]], _.rest); + assert.deepEqual(_.flatten(result), [2, 3, 2, 3], 'works well with _.map'); + }); + + QUnit.test('tail', function(assert) { + assert.strictEqual(_.tail, _.rest, 'is an alias for rest'); + }); + + QUnit.test('drop', function(assert) { + assert.strictEqual(_.drop, _.rest, 'is an alias for rest'); + }); + + QUnit.test('initial', function(assert) { + assert.deepEqual(_.initial([1, 2, 3, 4, 5]), [1, 2, 3, 4], 'returns all but the last element'); + assert.deepEqual(_.initial([1, 2, 3, 4], 2), [1, 2], 'returns all but the last n elements'); + assert.deepEqual(_.initial([1, 2, 3, 4], 6), [], 'returns an empty array when n > length'); + var result = (function(){ return _(arguments).initial(); }(1, 2, 3, 4)); + assert.deepEqual(result, [1, 2, 3], 'works on an arguments object'); + result = _.map([[1, 2, 3], [1, 2, 3]], _.initial); + assert.deepEqual(_.flatten(result), [1, 2, 1, 2], 'works well with _.map'); + }); + + QUnit.test('last', function(assert) { + assert.equal(_.last([1, 2, 3]), 3, 'can pull out the last element of an array'); + assert.equal(_([1, 2, 3]).last(), 3, 'can perform OO-style "last()"'); + assert.deepEqual(_.last([1, 2, 3], 0), [], 'returns an empty array when n <= 0 (0 case)'); + assert.deepEqual(_.last([1, 2, 3], -1), [], 'returns an empty array when n <= 0 (negative case)'); + assert.deepEqual(_.last([1, 2, 3], 2), [2, 3], 'can fetch the last n elements'); + assert.deepEqual(_.last([1, 2, 3], 5), [1, 2, 3], 'returns the whole array if n > length'); + var result = (function(){ return _(arguments).last(); }(1, 2, 3, 4)); + assert.equal(result, 4, 'works on an arguments object'); + result = _.map([[1, 2, 3], [1, 2, 3]], _.last); + assert.deepEqual(result, [3, 3], 'works well with _.map'); + assert.equal(_.last(null), void 0, 'returns undefined when called on null'); + }); + + QUnit.test('compact', function(assert) { + assert.deepEqual(_.compact([1, false, null, 0, '', void 0, NaN, 2]), [1, 2], 'removes all falsy values'); + var result = (function(){ return _.compact(arguments); }(0, 1, false, 2, false, 3)); + assert.deepEqual(result, [1, 2, 3], 'works on an arguments object'); + result = _.map([[1, false, false], [false, false, 3]], _.compact); + assert.deepEqual(result, [[1], [3]], 'works well with _.map'); + }); + + QUnit.test('flatten', function(assert) { + assert.deepEqual(_.flatten(null), [], 'supports null'); + assert.deepEqual(_.flatten(void 0), [], 'supports undefined'); + + assert.deepEqual(_.flatten([[], [[]], []]), [], 'supports empty arrays'); + assert.deepEqual(_.flatten([[], [[]], []], true), [[]], 'can shallowly flatten empty arrays'); + + var list = [1, [2], [3, [[[4]]]]]; + assert.deepEqual(_.flatten(list), [1, 2, 3, 4], 'can flatten nested arrays'); + assert.deepEqual(_.flatten(list, true), [1, 2, 3, [[[4]]]], 'can shallowly flatten nested arrays'); + var result = (function(){ return _.flatten(arguments); }(1, [2], [3, [[[4]]]])); + assert.deepEqual(result, [1, 2, 3, 4], 'works on an arguments object'); + list = [[1], [2], [3], [[4]]]; + assert.deepEqual(_.flatten(list, true), [1, 2, 3, [4]], 'can shallowly flatten arrays containing only other arrays'); + + assert.equal(_.flatten([_.range(10), _.range(10), 5, 1, 3], true).length, 23, 'can flatten medium length arrays'); + assert.equal(_.flatten([_.range(10), _.range(10), 5, 1, 3]).length, 23, 'can shallowly flatten medium length arrays'); + assert.equal(_.flatten([new Array(1000000), _.range(56000), 5, 1, 3]).length, 1056003, 'can handle massive arrays'); + assert.equal(_.flatten([new Array(1000000), _.range(56000), 5, 1, 3], true).length, 1056003, 'can handle massive arrays in shallow mode'); + + var x = _.range(100000); + for (var i = 0; i < 1000; i++) x = [x]; + assert.deepEqual(_.flatten(x), _.range(100000), 'can handle very deep arrays'); + assert.deepEqual(_.flatten(x, true), x[0], 'can handle very deep arrays in shallow mode'); + }); + + QUnit.test('without', function(assert) { + var list = [1, 2, 1, 0, 3, 1, 4]; + assert.deepEqual(_.without(list, 0, 1), [2, 3, 4], 'removes all instances of the given values'); + var result = (function(){ return _.without(arguments, 0, 1); }(1, 2, 1, 0, 3, 1, 4)); + assert.deepEqual(result, [2, 3, 4], 'works on an arguments object'); + + list = [{one: 1}, {two: 2}]; + assert.deepEqual(_.without(list, {one: 1}), list, 'compares objects by reference (value case)'); + assert.deepEqual(_.without(list, list[0]), [{two: 2}], 'compares objects by reference (reference case)'); + }); + + QUnit.test('sortedIndex', function(assert) { + var numbers = [10, 20, 30, 40, 50]; + var indexFor35 = _.sortedIndex(numbers, 35); + assert.equal(indexFor35, 3, 'finds the index at which a value should be inserted to retain order'); + var indexFor30 = _.sortedIndex(numbers, 30); + assert.equal(indexFor30, 2, 'finds the smallest index at which a value could be inserted to retain order'); + + var objects = [{x: 10}, {x: 20}, {x: 30}, {x: 40}]; + var iterator = function(obj){ return obj.x; }; + assert.strictEqual(_.sortedIndex(objects, {x: 25}, iterator), 2, 'uses the result of `iterator` for order comparisons'); + assert.strictEqual(_.sortedIndex(objects, {x: 35}, 'x'), 3, 'when `iterator` is a string, uses that key for order comparisons'); + + var context = {1: 2, 2: 3, 3: 4}; + iterator = function(obj){ return this[obj]; }; + assert.strictEqual(_.sortedIndex([1, 3], 2, iterator, context), 1, 'can execute its iterator in the given context'); + + var values = [0, 1, 3, 7, 15, 31, 63, 127, 255, 511, 1023, 2047, 4095, 8191, 16383, 32767, 65535, 131071, 262143, 524287, + 1048575, 2097151, 4194303, 8388607, 16777215, 33554431, 67108863, 134217727, 268435455, 536870911, 1073741823, 2147483647]; + var largeArray = Array(Math.pow(2, 32) - 1); + var length = values.length; + // Sparsely populate `array` + while (length--) { + largeArray[values[length]] = values[length]; + } + assert.equal(_.sortedIndex(largeArray, 2147483648), 2147483648, 'works with large indexes'); + }); + + QUnit.test('uniq', function(assert) { + var list = [1, 2, 1, 3, 1, 4]; + assert.deepEqual(_.uniq(list), [1, 2, 3, 4], 'can find the unique values of an unsorted array'); + list = [1, 1, 1, 2, 2, 3]; + assert.deepEqual(_.uniq(list, true), [1, 2, 3], 'can find the unique values of a sorted array faster'); + + list = [{name: 'Moe'}, {name: 'Curly'}, {name: 'Larry'}, {name: 'Curly'}]; + var expected = [{name: 'Moe'}, {name: 'Curly'}, {name: 'Larry'}]; + var iterator = function(stooge) { return stooge.name; }; + assert.deepEqual(_.uniq(list, false, iterator), expected, 'uses the result of `iterator` for uniqueness comparisons (unsorted case)'); + assert.deepEqual(_.uniq(list, iterator), expected, '`sorted` argument defaults to false when omitted'); + assert.deepEqual(_.uniq(list, 'name'), expected, 'when `iterator` is a string, uses that key for comparisons (unsorted case)'); + + list = [{score: 8}, {score: 10}, {score: 10}]; + expected = [{score: 8}, {score: 10}]; + iterator = function(item) { return item.score; }; + assert.deepEqual(_.uniq(list, true, iterator), expected, 'uses the result of `iterator` for uniqueness comparisons (sorted case)'); + assert.deepEqual(_.uniq(list, true, 'score'), expected, 'when `iterator` is a string, uses that key for comparisons (sorted case)'); + + assert.deepEqual(_.uniq([{0: 1}, {0: 1}, {0: 1}, {0: 2}], 0), [{0: 1}, {0: 2}], 'can use falsey pluck like iterator'); + + var result = (function(){ return _.uniq(arguments); }(1, 2, 1, 3, 1, 4)); + assert.deepEqual(result, [1, 2, 3, 4], 'works on an arguments object'); + + var a = {}, b = {}, c = {}; + assert.deepEqual(_.uniq([a, b, a, b, c]), [a, b, c], 'works on values that can be tested for equivalency but not ordered'); + + assert.deepEqual(_.uniq(null), [], 'returns an empty array when `array` is not iterable'); + + var context = {}; + list = [3]; + _.uniq(list, function(value, index, array) { + assert.strictEqual(this, context, 'executes its iterator in the given context'); + assert.strictEqual(value, 3, 'passes its iterator the value'); + assert.strictEqual(index, 0, 'passes its iterator the index'); + assert.strictEqual(array, list, 'passes its iterator the entire array'); + }, context); + + }); + + QUnit.test('unique', function(assert) { + assert.strictEqual(_.unique, _.uniq, 'is an alias for uniq'); + }); + + QUnit.test('intersection', function(assert) { + var stooges = ['moe', 'curly', 'larry'], leaders = ['moe', 'groucho']; + assert.deepEqual(_.intersection(stooges, leaders), ['moe'], 'can find the set intersection of two arrays'); + assert.deepEqual(_(stooges).intersection(leaders), ['moe'], 'can perform an OO-style intersection'); + var result = (function(){ return _.intersection(arguments, leaders); }('moe', 'curly', 'larry')); + assert.deepEqual(result, ['moe'], 'works on an arguments object'); + var theSixStooges = ['moe', 'moe', 'curly', 'curly', 'larry', 'larry']; + assert.deepEqual(_.intersection(theSixStooges, leaders), ['moe'], 'returns a duplicate-free array'); + result = _.intersection([2, 4, 3, 1], [1, 2, 3]); + assert.deepEqual(result, [2, 3, 1], 'preserves the order of the first array'); + result = _.intersection(null, [1, 2, 3]); + assert.deepEqual(result, [], 'returns an empty array when passed null as the first argument'); + result = _.intersection([1, 2, 3], null); + assert.deepEqual(result, [], 'returns an empty array when passed null as an argument beyond the first'); + }); + + QUnit.test('union', function(assert) { + var result = _.union([1, 2, 3], [2, 30, 1], [1, 40]); + assert.deepEqual(result, [1, 2, 3, 30, 40], 'can find the union of a list of arrays'); + + result = _([1, 2, 3]).union([2, 30, 1], [1, 40]); + assert.deepEqual(result, [1, 2, 3, 30, 40], 'can perform an OO-style union'); + + result = _.union([1, 2, 3], [2, 30, 1], [1, 40, [1]]); + assert.deepEqual(result, [1, 2, 3, 30, 40, [1]], 'can find the union of a list of nested arrays'); + + result = _.union([10, 20], [1, 30, 10], [0, 40]); + assert.deepEqual(result, [10, 20, 1, 30, 0, 40], 'orders values by their first encounter'); + + result = (function(){ return _.union(arguments, [2, 30, 1], [1, 40]); }(1, 2, 3)); + assert.deepEqual(result, [1, 2, 3, 30, 40], 'works on an arguments object'); + + assert.deepEqual(_.union([1, 2, 3], 4), [1, 2, 3], 'restricts the union to arrays only'); + }); + + QUnit.test('difference', function(assert) { + var result = _.difference([1, 2, 3], [2, 30, 40]); + assert.deepEqual(result, [1, 3], 'can find the difference of two arrays'); + + result = _([1, 2, 3]).difference([2, 30, 40]); + assert.deepEqual(result, [1, 3], 'can perform an OO-style difference'); + + result = _.difference([1, 2, 3, 4], [2, 30, 40], [1, 11, 111]); + assert.deepEqual(result, [3, 4], 'can find the difference of three arrays'); + + result = _.difference([8, 9, 3, 1], [3, 8]); + assert.deepEqual(result, [9, 1], 'preserves the order of the first array'); + + result = (function(){ return _.difference(arguments, [2, 30, 40]); }(1, 2, 3)); + assert.deepEqual(result, [1, 3], 'works on an arguments object'); + + result = _.difference([1, 2, 3], 1); + assert.deepEqual(result, [1, 2, 3], 'restrict the difference to arrays only'); + }); + + QUnit.test('zip', function(assert) { + var names = ['moe', 'larry', 'curly'], ages = [30, 40, 50], leaders = [true]; + assert.deepEqual(_.zip(names, ages, leaders), [ + ['moe', 30, true], + ['larry', 40, void 0], + ['curly', 50, void 0] + ], 'zipped together arrays of different lengths'); + + var stooges = _.zip(['moe', 30, 'stooge 1'], ['larry', 40, 'stooge 2'], ['curly', 50, 'stooge 3']); + assert.deepEqual(stooges, [['moe', 'larry', 'curly'], [30, 40, 50], ['stooge 1', 'stooge 2', 'stooge 3']], 'zipped pairs'); + + // In the case of different lengths of the tuples, undefined values + // should be used as placeholder + stooges = _.zip(['moe', 30], ['larry', 40], ['curly', 50, 'extra data']); + assert.deepEqual(stooges, [['moe', 'larry', 'curly'], [30, 40, 50], [void 0, void 0, 'extra data']], 'zipped pairs with empties'); + + var empty = _.zip([]); + assert.deepEqual(empty, [], 'unzipped empty'); + + assert.deepEqual(_.zip(null), [], 'handles null'); + assert.deepEqual(_.zip(), [], '_.zip() returns []'); + }); + + QUnit.test('unzip', function(assert) { + assert.deepEqual(_.unzip(null), [], 'handles null'); + + assert.deepEqual(_.unzip([['a', 'b'], [1, 2]]), [['a', 1], ['b', 2]]); + + // complements zip + var zipped = _.zip(['fred', 'barney'], [30, 40], [true, false]); + assert.deepEqual(_.unzip(zipped), [['fred', 'barney'], [30, 40], [true, false]]); + + zipped = _.zip(['moe', 30], ['larry', 40], ['curly', 50, 'extra data']); + assert.deepEqual(_.unzip(zipped), [['moe', 30, void 0], ['larry', 40, void 0], ['curly', 50, 'extra data']], 'Uses length of largest array'); + }); + + QUnit.test('object', function(assert) { + var result = _.object(['moe', 'larry', 'curly'], [30, 40, 50]); + var shouldBe = {moe: 30, larry: 40, curly: 50}; + assert.deepEqual(result, shouldBe, 'two arrays zipped together into an object'); + + result = _.object([['one', 1], ['two', 2], ['three', 3]]); + shouldBe = {one: 1, two: 2, three: 3}; + assert.deepEqual(result, shouldBe, 'an array of pairs zipped together into an object'); + + var stooges = {moe: 30, larry: 40, curly: 50}; + assert.deepEqual(_.object(_.pairs(stooges)), stooges, 'an object converted to pairs and back to an object'); + + assert.deepEqual(_.object(null), {}, 'handles nulls'); + }); + + QUnit.test('indexOf', function(assert) { + var numbers = [1, 2, 3]; + assert.equal(_.indexOf(numbers, 2), 1, 'can compute indexOf'); + var result = (function(){ return _.indexOf(arguments, 2); }(1, 2, 3)); + assert.equal(result, 1, 'works on an arguments object'); + + _.each([null, void 0, [], false], function(val) { + var msg = 'Handles: ' + (_.isArray(val) ? '[]' : val); + assert.equal(_.indexOf(val, 2), -1, msg); + assert.equal(_.indexOf(val, 2, -1), -1, msg); + assert.equal(_.indexOf(val, 2, -20), -1, msg); + assert.equal(_.indexOf(val, 2, 15), -1, msg); + }); + + var num = 35; + numbers = [10, 20, 30, 40, 50]; + var index = _.indexOf(numbers, num, true); + assert.equal(index, -1, '35 is not in the list'); + + numbers = [10, 20, 30, 40, 50]; num = 40; + index = _.indexOf(numbers, num, true); + assert.equal(index, 3, '40 is in the list'); + + numbers = [1, 40, 40, 40, 40, 40, 40, 40, 50, 60, 70]; num = 40; + assert.equal(_.indexOf(numbers, num, true), 1, '40 is in the list'); + assert.equal(_.indexOf(numbers, 6, true), -1, '6 isnt in the list'); + assert.equal(_.indexOf([1, 2, 5, 4, 6, 7], 5, true), -1, 'sorted indexOf doesn\'t uses binary search'); + assert.ok(_.every(['1', [], {}, null], function() { + return _.indexOf(numbers, num, {}) === 1; + }), 'non-nums as fromIndex make indexOf assume sorted'); + + numbers = [1, 2, 3, 1, 2, 3, 1, 2, 3]; + index = _.indexOf(numbers, 2, 5); + assert.equal(index, 7, 'supports the fromIndex argument'); + + index = _.indexOf([,,, 0], void 0); + assert.equal(index, 0, 'treats sparse arrays as if they were dense'); + + var array = [1, 2, 3, 1, 2, 3]; + assert.strictEqual(_.indexOf(array, 1, -3), 3, 'neg `fromIndex` starts at the right index'); + assert.strictEqual(_.indexOf(array, 1, -2), -1, 'neg `fromIndex` starts at the right index'); + assert.strictEqual(_.indexOf(array, 2, -3), 4); + _.each([-6, -8, -Infinity], function(fromIndex) { + assert.strictEqual(_.indexOf(array, 1, fromIndex), 0); + }); + assert.strictEqual(_.indexOf([1, 2, 3], 1, true), 0); + + index = _.indexOf([], void 0, true); + assert.equal(index, -1, 'empty array with truthy `isSorted` returns -1'); + }); + + QUnit.test('indexOf with NaN', function(assert) { + assert.strictEqual(_.indexOf([1, 2, NaN, NaN], NaN), 2, 'Expected [1, 2, NaN] to contain NaN'); + assert.strictEqual(_.indexOf([1, 2, Infinity], NaN), -1, 'Expected [1, 2, NaN] to contain NaN'); + + assert.strictEqual(_.indexOf([1, 2, NaN, NaN], NaN, 1), 2, 'startIndex does not affect result'); + assert.strictEqual(_.indexOf([1, 2, NaN, NaN], NaN, -2), 2, 'startIndex does not affect result'); + + (function() { + assert.strictEqual(_.indexOf(arguments, NaN), 2, 'Expected arguments [1, 2, NaN] to contain NaN'); + }(1, 2, NaN, NaN)); + }); + + QUnit.test('indexOf with +- 0', function(assert) { + _.each([-0, +0], function(val) { + assert.strictEqual(_.indexOf([1, 2, val, val], val), 2); + assert.strictEqual(_.indexOf([1, 2, val, val], -val), 2); + }); + }); + + QUnit.test('lastIndexOf', function(assert) { + var numbers = [1, 0, 1]; + var falsey = [void 0, '', 0, false, NaN, null, void 0]; + assert.equal(_.lastIndexOf(numbers, 1), 2); + + numbers = [1, 0, 1, 0, 0, 1, 0, 0, 0]; + numbers.lastIndexOf = null; + assert.equal(_.lastIndexOf(numbers, 1), 5, 'can compute lastIndexOf, even without the native function'); + assert.equal(_.lastIndexOf(numbers, 0), 8, 'lastIndexOf the other element'); + var result = (function(){ return _.lastIndexOf(arguments, 1); }(1, 0, 1, 0, 0, 1, 0, 0, 0)); + assert.equal(result, 5, 'works on an arguments object'); + + _.each([null, void 0, [], false], function(val) { + var msg = 'Handles: ' + (_.isArray(val) ? '[]' : val); + assert.equal(_.lastIndexOf(val, 2), -1, msg); + assert.equal(_.lastIndexOf(val, 2, -1), -1, msg); + assert.equal(_.lastIndexOf(val, 2, -20), -1, msg); + assert.equal(_.lastIndexOf(val, 2, 15), -1, msg); + }); + + numbers = [1, 2, 3, 1, 2, 3, 1, 2, 3]; + var index = _.lastIndexOf(numbers, 2, 2); + assert.equal(index, 1, 'supports the fromIndex argument'); + + var array = [1, 2, 3, 1, 2, 3]; + + assert.strictEqual(_.lastIndexOf(array, 1, 0), 0, 'starts at the correct from idx'); + assert.strictEqual(_.lastIndexOf(array, 3), 5, 'should return the index of the last matched value'); + assert.strictEqual(_.lastIndexOf(array, 4), -1, 'should return `-1` for an unmatched value'); + + assert.strictEqual(_.lastIndexOf(array, 1, 2), 0, 'should work with a positive `fromIndex`'); + + _.each([6, 8, Math.pow(2, 32), Infinity], function(fromIndex) { + assert.strictEqual(_.lastIndexOf(array, void 0, fromIndex), -1); + assert.strictEqual(_.lastIndexOf(array, 1, fromIndex), 3); + assert.strictEqual(_.lastIndexOf(array, '', fromIndex), -1); + }); + + var expected = _.map(falsey, function(value) { + return typeof value == 'number' ? -1 : 5; + }); + + var actual = _.map(falsey, function(fromIndex) { + return _.lastIndexOf(array, 3, fromIndex); + }); + + assert.deepEqual(actual, expected, 'should treat falsey `fromIndex` values, except `0` and `NaN`, as `array.length`'); + assert.strictEqual(_.lastIndexOf(array, 3, '1'), 5, 'should treat non-number `fromIndex` values as `array.length`'); + assert.strictEqual(_.lastIndexOf(array, 3, true), 5, 'should treat non-number `fromIndex` values as `array.length`'); + + assert.strictEqual(_.lastIndexOf(array, 2, -3), 1, 'should work with a negative `fromIndex`'); + assert.strictEqual(_.lastIndexOf(array, 1, -3), 3, 'neg `fromIndex` starts at the right index'); + + assert.deepEqual(_.map([-6, -8, -Infinity], function(fromIndex) { + return _.lastIndexOf(array, 1, fromIndex); + }), [0, -1, -1]); + }); + + QUnit.test('lastIndexOf with NaN', function(assert) { + assert.strictEqual(_.lastIndexOf([1, 2, NaN, NaN], NaN), 3, 'Expected [1, 2, NaN] to contain NaN'); + assert.strictEqual(_.lastIndexOf([1, 2, Infinity], NaN), -1, 'Expected [1, 2, NaN] to contain NaN'); + + assert.strictEqual(_.lastIndexOf([1, 2, NaN, NaN], NaN, 2), 2, 'fromIndex does not affect result'); + assert.strictEqual(_.lastIndexOf([1, 2, NaN, NaN], NaN, -2), 2, 'fromIndex does not affect result'); + + (function() { + assert.strictEqual(_.lastIndexOf(arguments, NaN), 3, 'Expected arguments [1, 2, NaN] to contain NaN'); + }(1, 2, NaN, NaN)); + }); + + QUnit.test('lastIndexOf with +- 0', function(assert) { + _.each([-0, +0], function(val) { + assert.strictEqual(_.lastIndexOf([1, 2, val, val], val), 3); + assert.strictEqual(_.lastIndexOf([1, 2, val, val], -val), 3); + assert.strictEqual(_.lastIndexOf([-1, 1, 2], -val), -1); + }); + }); + + QUnit.test('findIndex', function(assert) { + var objects = [ + {a: 0, b: 0}, + {a: 1, b: 1}, + {a: 2, b: 2}, + {a: 0, b: 0} + ]; + + assert.equal(_.findIndex(objects, function(obj) { + return obj.a === 0; + }), 0); + + assert.equal(_.findIndex(objects, function(obj) { + return obj.b * obj.a === 4; + }), 2); + + assert.equal(_.findIndex(objects, 'a'), 1, 'Uses lookupIterator'); + + assert.equal(_.findIndex(objects, function(obj) { + return obj.b * obj.a === 5; + }), -1); + + assert.equal(_.findIndex(null, _.noop), -1); + assert.strictEqual(_.findIndex(objects, function(a) { + return a.foo === null; + }), -1); + _.findIndex([{a: 1}], function(a, key, obj) { + assert.equal(key, 0); + assert.deepEqual(obj, [{a: 1}]); + assert.strictEqual(this, objects, 'called with context'); + }, objects); + + var sparse = []; + sparse[20] = {a: 2, b: 2}; + assert.equal(_.findIndex(sparse, function(obj) { + return obj && obj.b * obj.a === 4; + }), 20, 'Works with sparse arrays'); + + var array = [1, 2, 3, 4]; + array.match = 55; + assert.strictEqual(_.findIndex(array, function(x) { return x === 55; }), -1, 'doesn\'t match array-likes keys'); + }); + + QUnit.test('findLastIndex', function(assert) { + var objects = [ + {a: 0, b: 0}, + {a: 1, b: 1}, + {a: 2, b: 2}, + {a: 0, b: 0} + ]; + + assert.equal(_.findLastIndex(objects, function(obj) { + return obj.a === 0; + }), 3); + + assert.equal(_.findLastIndex(objects, function(obj) { + return obj.b * obj.a === 4; + }), 2); + + assert.equal(_.findLastIndex(objects, 'a'), 2, 'Uses lookupIterator'); + + assert.equal(_.findLastIndex(objects, function(obj) { + return obj.b * obj.a === 5; + }), -1); + + assert.equal(_.findLastIndex(null, _.noop), -1); + assert.strictEqual(_.findLastIndex(objects, function(a) { + return a.foo === null; + }), -1); + _.findLastIndex([{a: 1}], function(a, key, obj) { + assert.equal(key, 0); + assert.deepEqual(obj, [{a: 1}]); + assert.strictEqual(this, objects, 'called with context'); + }, objects); + + var sparse = []; + sparse[20] = {a: 2, b: 2}; + assert.equal(_.findLastIndex(sparse, function(obj) { + return obj && obj.b * obj.a === 4; + }), 20, 'Works with sparse arrays'); + + var array = [1, 2, 3, 4]; + array.match = 55; + assert.strictEqual(_.findLastIndex(array, function(x) { return x === 55; }), -1, 'doesn\'t match array-likes keys'); + }); + + QUnit.test('range', function(assert) { + assert.deepEqual(_.range(0), [], 'range with 0 as a first argument generates an empty array'); + assert.deepEqual(_.range(4), [0, 1, 2, 3], 'range with a single positive argument generates an array of elements 0,1,2,...,n-1'); + assert.deepEqual(_.range(5, 8), [5, 6, 7], 'range with two arguments a & b, a<b generates an array of elements a,a+1,a+2,...,b-2,b-1'); + assert.deepEqual(_.range(3, 10, 3), [3, 6, 9], 'range with three arguments a & b & c, c < b-a, a < b generates an array of elements a,a+c,a+2c,...,b - (multiplier of a) < c'); + assert.deepEqual(_.range(3, 10, 15), [3], 'range with three arguments a & b & c, c > b-a, a < b generates an array with a single element, equal to a'); + assert.deepEqual(_.range(12, 7, -2), [12, 10, 8], 'range with three arguments a & b & c, a > b, c < 0 generates an array of elements a,a-c,a-2c and ends with the number not less than b'); + assert.deepEqual(_.range(0, -10, -1), [0, -1, -2, -3, -4, -5, -6, -7, -8, -9], 'final example in the Python docs'); + assert.strictEqual(1 / _.range(-0, 1)[0], -Infinity, 'should preserve -0'); + assert.deepEqual(_.range(8, 5), [8, 7, 6], 'negative range generates descending array'); + assert.deepEqual(_.range(-3), [0, -1, -2], 'negative range generates descending array'); + }); + + QUnit.test('chunk', function(assert) { + assert.deepEqual(_.chunk([], 2), [], 'chunk for empty array returns an empty array'); + + assert.deepEqual(_.chunk([1, 2, 3], 0), [], 'chunk into parts of 0 elements returns empty array'); + assert.deepEqual(_.chunk([1, 2, 3], -1), [], 'chunk into parts of negative amount of elements returns an empty array'); + assert.deepEqual(_.chunk([1, 2, 3]), [], 'defaults to empty array (chunk size 0)'); + + assert.deepEqual(_.chunk([1, 2, 3], 1), [[1], [2], [3]], 'chunk into parts of 1 elements returns original array'); + + assert.deepEqual(_.chunk([1, 2, 3], 3), [[1, 2, 3]], 'chunk into parts of current array length elements returns the original array'); + assert.deepEqual(_.chunk([1, 2, 3], 5), [[1, 2, 3]], 'chunk into parts of more then current array length elements returns the original array'); + + assert.deepEqual(_.chunk([10, 20, 30, 40, 50, 60, 70], 2), [[10, 20], [30, 40], [50, 60], [70]], 'chunk into parts of less then current array length elements'); + assert.deepEqual(_.chunk([10, 20, 30, 40, 50, 60, 70], 3), [[10, 20, 30], [40, 50, 60], [70]], 'chunk into parts of less then current array length elements'); + }); +}()); |