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Add another _.constant test for falsey values.

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John-David Dalton
2013-12-22 01:25:24 -06:00
parent 8069853dda
commit ad0bcc7de9
1 changed files with 21 additions and 3 deletions
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24
test/test.js
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@@ -1126,12 +1126,30 @@
(function() {
test('should create a function that always returns `value`', 1, function() {
var object = { 'a': 1 },
values = falsey.concat(1, 'a'),
values = falsey.concat(null, null, 1, 'a'),
constant = _.constant(object),
expected = _.map(values, function() { return object; });
expected = _.map(values, function() { return true; });
var actual = _.map(values, function(value, index) {
return index ? constant(value) : constant();
if (index == 0) {
var result = constant();
} else if (index == 1) {
result = constant.call({});
} else {
result = constant(value);
}
return result === object;
});
deepEqual(actual, expected);
});
test('should work with falsey values', 1, function() {
var expected = _.map(falsey, function() { return true; });
var actual = _.map(falsey, function(value, index) {
var constant = index ? _.constant(value) : _.constant();
return constant() === value || _.isNaN(value);
});
deepEqual(actual, expected);