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Assign methods should create an object when object is nullish.

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John-David Dalton
2016-01-07 21:53:35 -08:00
parent 6fa9490a13
commit 8bd8aa3037
2 changed files with 15 additions and 10 deletions
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2
lodash.js
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@@ -3835,7 +3835,7 @@
function createAssigner(assigner) { function createAssigner(assigner) {
return rest(function(object, sources) { return rest(function(object, sources) {
var index = -1, var index = -1,
length = object == null ? 0 : sources.length, length = sources.length,
customizer = length > 1 ? sources[length - 1] : undefined, customizer = length > 1 ? sources[length - 1] : undefined,
guard = length > 2 ? sources[2] : undefined; guard = length > 2 ? sources[2] : undefined;

23
test/test.js
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@@ -6015,17 +6015,22 @@
} }
}); });
QUnit.test('`_.' + methodName + '` should not error when `object` is nullish and sources are provided', function(assert) { QUnit.test('`_.' + methodName + '` should create an object when `object` is nullish', function(assert) {
assert.expect(1); assert.expect(2);
var expected = lodashStable.times(2, alwaysTrue); var source = { 'a': 1 },
values = [null, undefined],
expected = lodashStable.map(values, alwaysTrue);
var actual = lodashStable.map([null, undefined], function(value) { var actual = lodashStable.map(values, function(value) {
try { var object = func(value, source);
return lodashStable.isEqual(func(value, { 'a': 1 }), {}); return object !== source && lodashStable.isEqual(object, source);
} catch (e) { });
return false;
} assert.deepEqual(actual, expected);
actual = lodashStable.map(values, function(value) {
return lodashStable.isEqual(func(value), {});
}); });
assert.deepEqual(actual, expected); assert.deepEqual(actual, expected);