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Add fromIndex to _.indexOf and _.lastIndexOf. [closes #20]

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Former-commit-id: 3ab67c318a5a7fc2e521a9a2573b694e6920b14d
This commit is contained in:
John-David Dalton
2012-05-31 17:23:45 -06:00
parent 861eea5148
commit 3d8cc32302
2 changed files with 106 additions and 20 deletions
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69
test/test.js
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@@ -254,6 +254,42 @@
/*--------------------------------------------------------------------------*/
QUnit.module('lodash.indexOf');
(function() {
var array = [1, 2, 3, 1, 2, 3];
test('should work with a positive `fromIndex`', function() {
equal(_.indexOf(array, 1, 2), 3);
});
test('should work with `fromIndex` >= `array.length`', function() {
equal(_.indexOf(array, 1, 6), -1);
equal(_.indexOf(array, undefined, 6), -1);
equal(_.indexOf(array, 1, 8), -1);
equal(_.indexOf(array, undefined, 8), -1);
});
test('should work with a negative `fromIndex`', function() {
equal(_.indexOf(array, 2, -3), 4);
});
test('should work with a negative `fromIndex` <= `-array.length`', function() {
equal(_.indexOf(array, 1, -6), 0);
equal(_.indexOf(array, 2, -8), 1);
});
test('should ignore non-number `fromIndex` values', function() {
equal(_.indexOf([1, 2, 3], 1, '1'), 0);
});
test('should work with `isSorted`', function() {
equal(_.indexOf([1, 2, 3], 1, true), 0);
});
}());
/*--------------------------------------------------------------------------*/
QUnit.module('lodash.initial');
(function() {
@@ -324,6 +360,39 @@
/*--------------------------------------------------------------------------*/
QUnit.module('lodash.lastIndexOf');
(function() {
var array = [1, 2, 3, 1, 2, 3];
test('should work with a positive `fromIndex`', function() {
equal(_.lastIndexOf(array, 1, 2), 0);
});
test('should work with `fromIndex` >= `array.length`', function() {
equal(_.lastIndexOf(array, undefined, 6), -1);
equal(_.lastIndexOf(array, 1, 6), 3);
equal(_.lastIndexOf(array, undefined, 8), -1);
equal(_.lastIndexOf(array, 1, 8), 3);
});
test('should work with a negative `fromIndex`', function() {
equal(_.lastIndexOf(array, 2, -3), 1);
});
test('should work with a negative `fromIndex` <= `-array.length`', function() {
equal(_.lastIndexOf(array, 1, -6), 0);
equal(_.lastIndexOf(array, 2, -8), -1);
});
test('should ignore non-number `fromIndex` values', function() {
equal(_.lastIndexOf([1, 2, 3], 3, '1'), 2);
equal(_.lastIndexOf([1, 2, 3], 3, true), 2);
});
}());
/*--------------------------------------------------------------------------*/
QUnit.module('lodash.partial');
(function() {