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Ensure _.indexOf and _.lastIndexOf return -1 when performing a binary search for undefined and it's not found. [closes #1303]

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jdalton
2015-06-25 14:34:04 -07:00
parent 67359c22d5
commit 6b7c1ad6cf
2 changed files with 5 additions and 5 deletions
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7
lodash.src.js
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@@ -5089,10 +5089,9 @@
if (typeof fromIndex == 'number') {
fromIndex = fromIndex < 0 ? nativeMax(length + fromIndex, 0) : fromIndex;
} else if (fromIndex) {
var index = binaryIndex(array, value),
other = array[index];
if (value === value ? (value === other) : (other !== other)) {
var index = binaryIndex(array, value);
if (index < length &&
(value === value ? (value === array[index]) : (array[index] !== array[index]))) {
return index;
}
return -1;

3
test/test.js
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@@ -9354,12 +9354,13 @@
deepEqual(actual, expected);
});
test('`_.' + methodName + '` should return `-1` for an unmatched value', 4, function() {
test('`_.' + methodName + '` should return `-1` for an unmatched value', 5, function() {
var array = [1, 2, 3],
empty = [];
strictEqual(func(array, 4), -1);
strictEqual(func(array, 4, true), -1);
strictEqual(func(array, undefined, true), -1);
strictEqual(func(empty, undefined), -1);
strictEqual(func(empty, undefined, true), -1);