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Added _.flattenDepth for variable-depth flatten.

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This commit is contained in:
Michael Morgan
2016-02-08 17:09:13 -06:00
committed by John-David Dalton
parent 2b1eedb036
commit 046470a8db
3 changed files with 75 additions and 43 deletions
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24
test/test.js
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@@ -5620,31 +5620,37 @@
});
QUnit.test('should work with empty arrays', function(assert) {
assert.expect(2);
assert.expect(3);
var array = [[], [[]], [[], [[[]]]]];
assert.deepEqual(_.flatten(array), [[], [], [[[]]]]);
assert.deepEqual(_.flattenDeep(array), []);
assert.deepEqual(_.flattenDepth(array, 2), [[[]]])
});
QUnit.test('should support flattening of nested arrays', function(assert) {
assert.expect(2);
assert.expect(4);
var array = [1, [2, 3], 4, [[5]]];
var array = [1, [[2, 3], 4, [[[5]]]]];
assert.deepEqual(_.flatten(array), [1, 2, 3, 4, [5]]);
assert.deepEqual(_.flatten(array), [1, [2, 3], 4, [[[5]]]]);
assert.deepEqual(_.flattenDeep(array), [1, 2, 3, 4, 5]);
assert.deepEqual(_.flattenDepth(array, 2), [1, 2, 3, 4, [[5]]]);
assert.deepEqual(_.flattenDepth(array, 3), [1, 2, 3, 4, [5]]);
});
QUnit.test('should return an empty array for non array-like objects', function(assert) {
assert.expect(3);
assert.expect(5);
var nonArray = { 'a': 1 };
var expected = [];
assert.deepEqual(_.flatten({ 'a': 1 }), expected);
assert.deepEqual(_.flatten({ 'a': 1 }, true), expected);
assert.deepEqual(_.flattenDeep({ 'a': 1 }), expected);
assert.deepEqual(_.flatten(nonArray), expected);
assert.deepEqual(_.flatten(nonArray, true), expected);
assert.deepEqual(_.flattenDeep(nonArray), expected);
assert.deepEqual(_.flattenDepth(nonArray, 2), expected);
assert.deepEqual(_.flattenDepth(nonArray, 0), expected);
});
QUnit.test('should return a wrapped value when chaining', function(assert) {
@@ -24035,7 +24041,7 @@
var acceptFalsey = lodashStable.difference(allMethods, rejectFalsey);
QUnit.test('should accept falsey arguments', function(assert) {
assert.expect(295);
assert.expect(296);
var emptyArrays = lodashStable.map(falsey, alwaysEmptyArray);