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Make _(…) wrapper versions of _.first and _.last capable of returning wrapped and unwrapped values.

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Former-commit-id: b30704c1ce359213aa09069b290ee55edfb3e33e
This commit is contained in:
John-David Dalton
2012-11-20 07:32:51 -08:00
parent bd4bff3b6b
commit b57fe466ce
4 changed files with 60 additions and 20 deletions
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38
test/test.js
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@@ -1957,10 +1957,35 @@
/*--------------------------------------------------------------------------*/
QUnit.module('lodash(...) methods returning non-wrapped values');
QUnit.module('lodash(...) methods capable of returning wrapped and unwrapped values');
(function() {
var array = [1, 2, 3];
var array = [1, 2, 3],
wrapped = _(array);
var funcs = [
'first',
'last'
];
_.each(funcs, function(methodName) {
test('_.' + methodName + ' should return an unwrapped value', function() {
equal(typeof wrapped[methodName](), 'number');
});
test('_.' + methodName + ' should return a wrapped value', function() {
ok(wrapped[methodName](1) instanceof _);
});
});
}());
/*--------------------------------------------------------------------------*/
QUnit.module('lodash(...) methods that return unwrapped values');
(function() {
var array = [1, 2, 3],
wrapped = _(array);
var funcs = [
'contains',
@@ -1992,11 +2017,12 @@
];
_.each(funcs, function(methodName) {
test('_.' + methodName + ' should return non-wrapped values', function() {
var func = _[methodName],
result = methodName == 'reduceRight' ? func(array, _.identity) : func;
test('_.' + methodName + ' should return unwrapped values', function() {
var result = methodName == 'reduceRight'
? wrapped[methodName](_.identity)
: wrapped[methodName];
notEqual(typeof result, 'object', '_.' + methodName + ' returns non-wrapped values');
notEqual(typeof result, 'object', '_.' + methodName + ' returns unwrapped values');
});
});
}());