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Add more tests for _.differenceBy, _.intersectionBy, _.unionBy, and _.xorBy.

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This commit is contained in:
John-David Dalton
2015-10-10 15:25:47 -07:00
parent e961505e0a
commit 414ad602f2
2 changed files with 102 additions and 81 deletions
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27
lodash.js
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@@ -5025,8 +5025,12 @@
* // => [{ 'x': 1 }, { 'x': 2 }]
*/
var differenceBy = restParam(function(array, values) {
var iteratee = last(values);
if (isArrayLikeObject(iteratee)) {
iteratee = undefined;
}
return isArrayLikeObject(array)
? baseDifferenceBy(array, baseFlatten(values, false, true), getIteratee(last(values)))
? baseDifferenceBy(array, baseFlatten(values, false, true), getIteratee(iteratee))
: [];
});
@@ -5448,9 +5452,14 @@
* // => [{ 'x': 1 }]
*/
var intersectionBy = restParam(function(arrays) {
var mapped = arrayMap(arrays, toArrayLikeObject);
var iteratee = last(arrays),
mapped = arrayMap(arrays, toArrayLikeObject);
if (iteratee === last(mapped)) {
iteratee = undefined;
}
return (mapped.length && mapped[0] === arrays[0])
? baseIntersectionBy(mapped, getIteratee(last(arrays)))
? baseIntersectionBy(mapped, getIteratee(iteratee))
: [];
});
@@ -6088,7 +6097,11 @@
* // => [{ 'x': 1 }, { 'x': 2 }]
*/
var unionBy = restParam(function(arrays) {
return baseUniqBy(baseFlatten(arrays, false, true), getIteratee(last(arrays)));
var iteratee = last(arrays);
if (isArrayLikeObject(iteratee)) {
iteratee = undefined;
}
return baseUniqBy(baseFlatten(arrays, false, true), getIteratee(iteratee));
});
/**
@@ -6267,7 +6280,11 @@
* // => [{ 'x': 2 }]
*/
var xorBy = restParam(function(arrays) {
return baseXorBy(arrayFilter(arrays, isArrayLikeObject), getIteratee(last(arrays)));
var iteratee = last(arrays);
if (isArrayLikeObject(iteratee)) {
iteratee = undefined;
}
return baseXorBy(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee));
});
/**