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Added _.defaultTo. (#2381)

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Mateo Calle
2016-05-24 20:05:37 -05:00
committed by John-David Dalton
parent e582ad226a
commit 5fbc5303ff
4 changed files with 85 additions and 2 deletions
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36
test/test-fp.js
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@@ -833,6 +833,42 @@
/*--------------------------------------------------------------------------*/
QUnit.module('fp.defaultTo');
(function() {
QUnit.test('should return a default value if input is undefined', function(assert) {
assert.expect(4);
// default (inverse params)
var actual = fp.defaultTo(0, fp.find(function(a) { return a > 1; }, [1,2,3]));
assert.deepEqual(actual, 2);
var actual = fp.defaultTo(0, fp.find(function(a) { return a > 5; }, [1,2,3]));
assert.deepEqual(actual, 0);
// curried
var actual = fp.defaultTo(0)(fp.find(function(a) { return a > 1; })([1,2,3]));
assert.deepEqual(actual, 2);
var actual = fp.defaultTo(0)(fp.find(function(a) { return a > 5; })([1,2,3]));
assert.deepEqual(actual, 0);
});
QUnit.test('should work in a flow', function(assert) {
assert.expect(2);
var actual = fp.flow([
fp.find(function(a) { return a > 3 }),
fp.defaultTo(0)
]);
assert.deepEqual(actual([1,2,3]), 0);
assert.deepEqual(actual([3,4,5]), 4);
});
}());
/*--------------------------------------------------------------------------*/
QUnit.module('fp.difference');
(function() {