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Add placeholder support tests for _.bind.

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This commit is contained in:
John-David Dalton
2014-02-22 20:59:02 -08:00
parent 80289bd452
commit 28b83a486e
1 changed files with 25 additions and 11 deletions
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36
test/test.js
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@@ -799,11 +799,29 @@
deepEqual(bound('c', 'd'), [object, 'a', 'b', 'c', 'd']);
});
test('should create a function with a `length` of `0`', 1, function() {
test('should support placeholders', 4, function() {
if (_._iteratorTemplate) {
var object = {},
bound = _.bind(fn, object, _, 'b', _);
deepEqual(bound('a', 'c'), [object, 'a', 'b', 'c']);
deepEqual(bound('a'), [object, 'a', 'b', undefined]);
deepEqual(bound('a', 'c', 'd'), [object, 'a', 'b', 'c', 'd']);
deepEqual(bound(), [object, undefined, 'b', undefined]);
}
else {
skipTest(4);
}
});
test('should create a function with a `length` of `0`', 2, function() {
var func = function(a, b, c) {},
bound = _.bind(fn, {});
strictEqual(bound.length, 0);
bound = _.bind(fn, {}, 1);
strictEqual(bound.length, 0);
});
test('should ignore binding when called with the `new` operator', 3, function() {
@@ -6018,24 +6036,20 @@
test('`_.' + methodName + '` should support placeholders', 4, function() {
if (_._iteratorTemplate) {
var fn = function() {
return _.reduce(arguments, function(string, chr) {
return string + (chr || '');
}, '');
return slice.call(arguments);
};
var par = func(fn, _, 'b', _);
equal(par('a', 'c'), 'abc');
equal(par('a'), 'ab');
deepEqual(par('a', 'c'), ['a', 'b', 'c']);
deepEqual(par('a'), ['a', 'b', undefined]);
deepEqual(par(), [undefined, 'b', undefined]);
if (isPartial) {
equal(par('a', 'c', 'd'), 'abcd');
deepEqual(par('a', 'c', 'd'), ['a', 'b', 'c', 'd']);
} else {
par = func(fn, _, 'c', _);
equal(par('a', 'b', 'd'), 'abcd');
deepEqual(par('a', 'b', 'd'), ['a', 'b', 'c', 'd']);
}
fn = function() { return slice.call(arguments); };
par = func(fn, _, 'b', _);
deepEqual(par(), [undefined, 'b', undefined]);
}
else {
skipTest(4);