mirror of
https://github.com/whoisclebs/lodash.git
synced 2026-01-31 15:27:50 +00:00
497 lines
14 KiB
JavaScript
497 lines
14 KiB
JavaScript
(function(window, undefined) {
|
|
|
|
/** Use a single load function */
|
|
var load = typeof require == 'function' ? require : window.load;
|
|
|
|
/** The unit testing framework */
|
|
var QUnit =
|
|
window.QUnit || (
|
|
window.setTimeout || (window.addEventListener = window.setTimeout = / /),
|
|
window.QUnit = load('../vendor/qunit/qunit/qunit.js') || window.QUnit,
|
|
load('../vendor/qunit-clib/qunit-clib.js'),
|
|
(window.addEventListener || 0).test && delete window.addEventListener,
|
|
window.QUnit
|
|
);
|
|
|
|
/** The `lodash` function to test */
|
|
var _ =
|
|
window._ || (
|
|
_ = load('../lodash.js') || window._,
|
|
_._ || _
|
|
);
|
|
|
|
/** Shortcut used to convert array-like objects to arrays */
|
|
var slice = [].slice;
|
|
|
|
/** Used to resolve a value's internal [[Class]] */
|
|
var toString = {}.toString;
|
|
|
|
/** Used to check problem JScript properties (a.k.a. the [[DontEnum]] bug) */
|
|
var shadowed = {
|
|
'constructor': 1,
|
|
'hasOwnProperty': 2,
|
|
'isPrototypeOf': 3,
|
|
'propertyIsEnumerable': 4,
|
|
'toLocaleString': 5,
|
|
'toString': 6,
|
|
'valueOf': 7
|
|
};
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
/**
|
|
* Skips a given number of tests with a passing result.
|
|
*
|
|
* @private
|
|
* @param {Number} count The number of tests to skip.
|
|
*/
|
|
function skipTest(count) {
|
|
while (count--) {
|
|
ok(true, 'test skipped');
|
|
}
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
// explicitly call `QUnit.module()` instead of `module()`
|
|
// in case we are in a CLI environment
|
|
QUnit.module('lodash');
|
|
|
|
(function() {
|
|
test('supports loading lodash.js as the "lodash" module', function() {
|
|
if (window.document && window.require) {
|
|
equal((_2 || {}).moduleName, 'lodash');
|
|
} else {
|
|
skipTest(1)
|
|
}
|
|
});
|
|
|
|
test('supports loading lodash.js as the "underscore" module', function() {
|
|
if (window.document && window.require) {
|
|
equal((_3 || {}).moduleName, 'underscore');
|
|
} else {
|
|
skipTest(1)
|
|
}
|
|
});
|
|
|
|
test('avoids overwritten native methods', function() {
|
|
if (window.lodashBadKeys) {
|
|
notDeepEqual(lodashBadKeys.keys({ 'a': 1 }), []);
|
|
} else {
|
|
skipTest(1);
|
|
}
|
|
});
|
|
}());
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
QUnit.module('lodash constructor');
|
|
|
|
(function() {
|
|
test('creates a new instance when called without the `new` operator', function() {
|
|
ok(_() instanceof _);
|
|
});
|
|
|
|
test('should return passed LoDash instances', function() {
|
|
var wrapped = _([]);
|
|
equal(_(wrapped), wrapped);
|
|
});
|
|
}());
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
QUnit.module('lodash.bind');
|
|
|
|
(function() {
|
|
test('supports lazy bind', function() {
|
|
var object = {
|
|
'name': 'moe',
|
|
'greet': function(greeting) {
|
|
return greeting + ': ' + this.name;
|
|
}
|
|
};
|
|
|
|
var func = _.bind(object, 'greet', 'hi');
|
|
equal(func(), 'hi: moe');
|
|
|
|
object.greet = function(greeting) {
|
|
return greeting + ' ' + this.name + '!';
|
|
};
|
|
equal(func(), 'hi moe!');
|
|
});
|
|
}());
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
QUnit.module('lodash.debounce');
|
|
|
|
(function() {
|
|
test('subsequent "immediate" debounced calls should return the result of the first call', function() {
|
|
var debounced = _.debounce(function(value) { return value; }, 100, true),
|
|
result = [debounced('x'), debounced('y')];
|
|
|
|
deepEqual(result, ['x', 'x']);
|
|
});
|
|
}());
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
QUnit.module('lodash.escape');
|
|
|
|
(function() {
|
|
test('should not escape the ">" character', function() {
|
|
equal(_.escape('>'), '>');
|
|
});
|
|
}());
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
QUnit.module('lodash.extend');
|
|
|
|
(function() {
|
|
test('should not error on `null` or `undefined` sources (test in IE < 9)', function() {
|
|
try {
|
|
deepEqual(_.extend({}, null, undefined, { 'a': 1 }), { 'a': 1 });
|
|
} catch(e) {
|
|
ok(false);
|
|
}
|
|
});
|
|
|
|
test('skips the prototype property of functions (test in Firefox < 3.6, Opera > 9.50 - Opera < 11.60, and Safari < 5.1)', function() {
|
|
function Foo() {}
|
|
Foo.prototype.c = 3;
|
|
|
|
Foo.a = 1;
|
|
Foo.b = 2;
|
|
|
|
var expected = { 'a': 1, 'b': 2 };
|
|
deepEqual(_.extend({}, Foo), expected);
|
|
|
|
Foo.prototype = { 'c': 3 };
|
|
deepEqual(_.extend({}, Foo), expected);
|
|
});
|
|
}());
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
QUnit.module('lodash.find');
|
|
|
|
(function() {
|
|
var array = [1, 2, 3, 4];
|
|
|
|
test('should return found `value`', function() {
|
|
equal(_.find(array, function(n) { return n > 2; }), 3);
|
|
});
|
|
|
|
test('should return `undefined` if `value` is not found', function() {
|
|
equal(_.find(array, function(n) { return n == 5; }), undefined);
|
|
});
|
|
}());
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
QUnit.module('lodash.flatten');
|
|
|
|
(function() {
|
|
test('should treat sparse arrays as dense', function() {
|
|
var array = [[1, 2, 3], Array(3)],
|
|
expected = [1, 2, 3],
|
|
actual1 = _.flatten(array),
|
|
actual2 = _.flatten(array, true);
|
|
|
|
expected.push(undefined, undefined, undefined);
|
|
|
|
deepEqual(actual1, expected);
|
|
ok('4' in actual1);
|
|
|
|
deepEqual(actual2, expected);
|
|
ok('4' in actual2);
|
|
});
|
|
}());
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
QUnit.module('lodash.forEach');
|
|
|
|
(function() {
|
|
test('returns the collection', function() {
|
|
var collection = [1, 2, 3, 4];
|
|
equal(_.forEach(collection, Boolean), collection);
|
|
});
|
|
|
|
test('fixes the JScript [[DontEnum]] bug (test in IE < 9)', function() {
|
|
var object = {};
|
|
_.forEach(shadowed, function(value, key) {
|
|
object[key] = value;
|
|
});
|
|
|
|
deepEqual(object, shadowed);
|
|
});
|
|
}());
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
QUnit.module('lodash.groupBy');
|
|
|
|
(function() {
|
|
test('supports the `thisArg` argument', function() {
|
|
var actual = _.groupBy([1.3, 2.1, 2.4], function(num) {
|
|
return this.floor(num);
|
|
}, Math);
|
|
|
|
deepEqual(actual, { '1': [1.3], '2': [2.1, 2.4] });
|
|
});
|
|
|
|
test('should only add elements to own, not inherited, properties', function() {
|
|
var actual = _.groupBy([1.3, 2.1, 2.4], function(num) {
|
|
return Math.floor(num) > 1 ? 'hasOwnProperty' : 'constructor';
|
|
});
|
|
|
|
deepEqual(actual.constructor, [1.3]);
|
|
deepEqual(actual.hasOwnProperty, [2.1, 2.4]);
|
|
});
|
|
}());
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
QUnit.module('lodash.initial');
|
|
|
|
(function() {
|
|
test('returns an empty collection for `n` of `0`', function() {
|
|
var array = [1, 2, 3, 4];
|
|
deepEqual(_.initial(array, 0), []);
|
|
});
|
|
}());
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
QUnit.module('lodash.isEmpty');
|
|
|
|
(function() {
|
|
test('fixes the JScript [[DontEnum]] bug (test in IE < 9)', function() {
|
|
equal(_.isEmpty(shadowed), false);
|
|
});
|
|
}());
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
QUnit.module('lodash.isEqual');
|
|
|
|
(function() {
|
|
test('fixes the JScript [[DontEnum]] bug (test in IE < 9)', function() {
|
|
equal(_.isEqual(shadowed, {}), false);
|
|
});
|
|
}());
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
QUnit.module('lodash.isNaN');
|
|
|
|
(function() {
|
|
test('returns `true` for `new Number(NaN)`', function() {
|
|
equal(_.isNaN(new Number(NaN)), true)
|
|
});
|
|
}());
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
QUnit.module('lodash.keys');
|
|
|
|
(function() {
|
|
test('fixes the JScript [[DontEnum]] bug (test in IE < 9)', function() {
|
|
function Foo() {}
|
|
Foo.prototype.a = 1;
|
|
|
|
deepEqual(_.keys(Foo.prototype), ['a']);
|
|
deepEqual(_.keys(shadowed).sort(),
|
|
'constructor hasOwnProperty isPrototypeOf propertyIsEnumerable toLocaleString toString valueOf'.split(' '));
|
|
});
|
|
}());
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
QUnit.module('lodash.partial');
|
|
|
|
(function() {
|
|
test('partially applies an argument, without additional arguments', function() {
|
|
var arg = 'catnip',
|
|
func = function(x) { return x; };
|
|
|
|
equal(_.partial(func, arg)(), arg);
|
|
});
|
|
|
|
test('partially applies an argument, with additional arguments', function() {
|
|
var arg1 = 'catnip',
|
|
arg2 = 'cheese',
|
|
func = function(x, y) { return [x, y]; };
|
|
|
|
deepEqual(_.partial(func, arg1)(arg2), [arg1, arg2]);
|
|
});
|
|
|
|
test('works without partially applying arguments, without additional arguments', function() {
|
|
var func = function() { return arguments.length; };
|
|
|
|
equal(_.partial(func)(), 0);
|
|
});
|
|
|
|
test('works without partially applying arguments, with additional arguments', function() {
|
|
var arg = 'catnip',
|
|
func = function(x) { return x; };
|
|
|
|
equal(_.partial(func)(arg), arg);
|
|
});
|
|
|
|
test('should not alter the `this` binding of either function', function() {
|
|
var o = { 'cat': 'nip' },
|
|
func = function() { return this.cat; };
|
|
|
|
equal(_.partial(_.bind(func, o))(), o.cat);
|
|
equal(_.bind(_.partial(func), o)(), o.cat);
|
|
});
|
|
}());
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
QUnit.module('lodash.reduceRight');
|
|
|
|
(function() {
|
|
test('should pass the correct `callback` arguments when iterating an object', function() {
|
|
var args,
|
|
object = { 'a': 'A', 'b': 'B', 'c': 'C' },
|
|
keys = _.keys(object);
|
|
|
|
_.reduceRight(object, function() {
|
|
args || (args = slice.call(arguments));
|
|
});
|
|
|
|
deepEqual(args, ['C', 'B', 'b', object]);
|
|
});
|
|
}());
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
QUnit.module('lodash.size');
|
|
|
|
(function() {
|
|
test('should detect the size of a string value', function() {
|
|
equal(_.size('abc'), 3);
|
|
});
|
|
|
|
test('fixes the JScript [[DontEnum]] bug (test in IE < 9)', function() {
|
|
equal(_.size(shadowed), 7);
|
|
});
|
|
}());
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
QUnit.module('lodash.sortBy');
|
|
|
|
(function() {
|
|
test('supports the `thisArg` argument', function() {
|
|
var actual = _.sortBy([1, 2, 3, 4], function(num) {
|
|
return this.sin(num);
|
|
}, Math);
|
|
|
|
deepEqual(actual, [4, 3, 1, 2]);
|
|
});
|
|
}());
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
QUnit.module('lodash.template');
|
|
|
|
(function() {
|
|
test('supports recursive calls', function() {
|
|
var compiled = _.template('<%= a %><% a = _.template(c, obj) %><%= a %>'),
|
|
data = { 'a': 'A', 'b': 'B', 'c': '<%= b %>' };
|
|
|
|
equal(compiled(data), 'AB');
|
|
});
|
|
|
|
test('should not augment the `options` object', function() {
|
|
var options = {};
|
|
_.template('', null, options);
|
|
deepEqual(options, {});
|
|
});
|
|
}());
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
QUnit.module('lodash.throttle');
|
|
|
|
(function() {
|
|
test('subsequent calls should return the result of the first call', function() {
|
|
var throttled = _.throttle(function(value) { return value; }, 100),
|
|
result = [throttled('x'), throttled('y')];
|
|
|
|
deepEqual(result, ['x', 'x']);
|
|
});
|
|
|
|
test('supports calls in a loop', function() {
|
|
var counter = 0,
|
|
throttled = _.throttle(function() { counter++; }, 100),
|
|
start = new Date,
|
|
limit = 220;
|
|
|
|
while ((new Date - start) < limit) {
|
|
throttled();
|
|
}
|
|
ok(counter > 1);
|
|
});
|
|
}());
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
QUnit.module('lodash.toArray');
|
|
|
|
(function() {
|
|
var args = arguments;
|
|
|
|
test('should call custom `toArray` method of an array', function() {
|
|
var array = [1, 2, 3];
|
|
array.toArray = function() { return [3, 2, 1]; };
|
|
deepEqual(_.toArray(array), [3, 2, 1]);
|
|
});
|
|
|
|
test('should treat array-like-objects like arrays', function() {
|
|
var object = { '0': 'a', '1': 'b', '2': 'c', 'length': 3 };
|
|
deepEqual(_.toArray(object), ['a', 'b', 'c']);
|
|
deepEqual(_.toArray(args), [1, 2, 3]);
|
|
});
|
|
}(1, 2, 3));
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
QUnit.module('lodash(...).shift');
|
|
|
|
(function() {
|
|
test('should remove the value at index `0` when length is `0` (test in IE 8 compatibility mode)', function() {
|
|
var wrapped = _({ '0': 1, 'length': 1 });
|
|
wrapped.shift();
|
|
|
|
deepEqual(wrapped.keys(), ['length']);
|
|
equal(wrapped.first(), undefined);
|
|
});
|
|
}());
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
QUnit.module('lodash(...).splice');
|
|
|
|
(function() {
|
|
test('should remove the value at index `0` when length is `0` (test in IE < 9, and in compatibility mode for IE9)', function() {
|
|
var wrapped = _({ '0': 1, 'length': 1 });
|
|
wrapped.splice(0, 1);
|
|
|
|
deepEqual(wrapped.keys(), ['length']);
|
|
equal(wrapped.first(), undefined);
|
|
});
|
|
}());
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
// explicitly call `QUnit.start()` for Narwhal, Rhino, and RingoJS
|
|
QUnit.start();
|
|
|
|
}(typeof global == 'object' && global || this));
|