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Add _.isNil function.

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xixilive
2015-08-20 13:20:48 +08:00
committed by John-David Dalton
parent b135431542
commit 5644a20eec
2 changed files with 85 additions and 2 deletions
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55
test/test.js
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@@ -7723,6 +7723,58 @@
/*--------------------------------------------------------------------------*/
QUnit.module('lodash.isNil');
(function() {
var args = arguments;
test('should return `true` for nulls', 1, function() {
strictEqual(_.isNil(null), true);
});
test('should return `true` for undefinitions', 2, function() {
strictEqual(_.isNil(), true);
strictEqual(_.isNil(undefined), true);
});
test('should return `false` for non-nils', 13, function() {
var expected = _.map(falsey, function(value) {
return undefined === value || null === value;
});
var actual = _.map(falsey, function(value) {
return _.isNil(value);
});
deepEqual(actual, expected);
strictEqual(_.isNull(args), false);
strictEqual(_.isNull([1, 2, 3]), false);
strictEqual(_.isNull(true), false);
strictEqual(_.isNull(new Date), false);
strictEqual(_.isNull(new Error), false);
strictEqual(_.isNull(_), false);
strictEqual(_.isNull(slice), false);
strictEqual(_.isNull({ 'a': 1 }), false);
strictEqual(_.isNull(1), false);
strictEqual(_.isNull(NaN), false);
strictEqual(_.isNull(/x/), false);
strictEqual(_.isNull('a'), false);
});
test('should work with nulls from another realm', 2, function() {
if (_._object) {
strictEqual(_.isNil(_._null), true);
strictEqual(_.isNil(_._undefined), true);
}
else {
skipTest();
}
});
}(1, 2, 3));
/*--------------------------------------------------------------------------*/
QUnit.module('lodash.isNumber');
(function() {
@@ -17043,6 +17095,7 @@
'isFinite',
'isFunction',
'isNaN',
'isNil',
'isNull',
'isNumber',
'isObject',
@@ -17269,7 +17322,7 @@
var acceptFalsey = _.difference(allMethods, rejectFalsey);
test('should accept falsey arguments', 223, function() {
test('should accept falsey arguments', 224, function() {
var emptyArrays = _.map(falsey, _.constant([]));
_.each(acceptFalsey, function(methodName) {