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Ensure _.callback supports binding built-in methods. [closes #576]

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This commit is contained in:
John-David Dalton
2014-06-09 01:40:02 -07:00
parent 9a152c23bb
commit d2edf11726
2 changed files with 16 additions and 14 deletions
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23
test/test.js
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@@ -1741,16 +1741,16 @@
(function() {
test('should create a callback with a falsey `thisArg`', 1, function() {
var values = _.map(falsey, function(value) {
var expected = _.map(falsey, function(value) {
return Object(value == null ? root : value);
});
var actual = _.map(values, function(value) {
var actual = _.map(falsey, function(value) {
var callback = _.callback(function() { return this; }, value);
return callback();
});
deepEqual(actual, values);
ok(_.isEqual(actual, expected));
});
test('should return `_.identity` when `func` is nullish', 2, function() {
@@ -1818,15 +1818,18 @@
deepEqual(callback(2), expected);
});
test('should return the function provided if already bound with `Function#bind`', 1, function() {
function a() {}
test('should support binding built-in methods', 2, function() {
var object = { 'a': 1 },
callback = _.callback(Object.prototype.hasOwnProperty, object);
var object = {},
bound = a.bind && a.bind(object);
strictEqual(callback('a'), true);
if (bound && !('prototype' in bound)) {
var bound = a.bind(object);
strictEqual(_.callback(bound, object), bound);
var fn = function () {},
bound = fn.bind && fn.bind(object);
if (bound) {
callback = _.callback(bound, object);
notStrictEqual(callback, bound);
}
else {
skipTest();