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Ensure _.intersection handles non-array secondary values correctly.

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This commit is contained in:
John-David Dalton
2014-03-08 16:36:05 -08:00
parent 445445603f
commit 737e18d2de
2 changed files with 9 additions and 4 deletions
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8
lodash.js
View File

@@ -2696,7 +2696,10 @@
* _.intersection([1, 2, 3], [5, 2, 1, 4], [2, 1]);
* // => [1, 2]
*/
function intersection() {
function intersection(array) {
if (!array) {
return [];
}
var args = [],
argsIndex = -1,
argsLength = arguments.length,
@@ -2710,9 +2713,10 @@
if (isArray(value) || isArguments(value)) {
args.push(value);
caches.push(prereq && value.length >= 120 &&
createCache(argsIndex ? args[argsIndex] : seen));
createCache(argsIndex ? value : seen));
}
}
argsLength = args.length;
var array = args[0],
index = -1,
length = array ? array.length : 0,

5
test/test.js
View File

@@ -3524,7 +3524,8 @@
});
test('should ignore individual secondary values', 1, function() {
deepEqual(_.intersection([1, null, 3], 3, null), []);
var array = [1, null, 3];
deepEqual(_.intersection([1, null, 3], 3, null), array);
});
}());
@@ -9212,7 +9213,7 @@
}
deepEqual(_.difference(array, null), array, message('difference'));
deepEqual(_.intersection(array, null), [], message('intersection'));
deepEqual(_.intersection(array, null), array, message('intersection'));
deepEqual(_.union(array, null), array, message('union'));
});
}(1, null, [3], null, 5));