Mirrors/lodash
1
0
Fork 0
mirror of https://github.com/whoisclebs/lodash.git synced 2026-02-02 16:17:50 +00:00
Code Issues Packages Projects Releases Wiki Activity

Make _.isFinite follow ES6 Number.isFinite.

Browse Source
This commit is contained in:
John-David Dalton
2014-06-22 02:34:54 -07:00
parent 35ce087f3b
commit e143a0ec6b
2 changed files with 36 additions and 33 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
lodash.js
View File

@@ -6693,7 +6693,7 @@
* // => false
*/
function isFinite(value) {
return nativeIsFinite(value) && !nativeIsNaN(parseFloat(value));
return typeof value == 'number' && nativeIsFinite(value);
}
/**

67
test/test.js
View File

@@ -5430,45 +5430,48 @@
QUnit.module('lodash.isFinite');
(function() {
test('should return `true` for finite values', 5, function() {
strictEqual(_.isFinite(0), true);
strictEqual(_.isFinite(1), true);
strictEqual(_.isFinite(3.14), true);
strictEqual(_.isFinite(-1), true);
strictEqual(_.isFinite(new Number(0)), true);
test('should return `true` for finite values', 1, function() {
var values = [0, 1, 3.14, -1],
expected = _.map(values, _.constant(true));
var actual = _.map(values, function(value) {
return _.isFinite(value);
});
deepEqual(actual, expected);
});
test('should return `false` for non-finite values', 3, function() {
strictEqual(_.isFinite(NaN), false);
strictEqual(_.isFinite(Infinity), false);
strictEqual(_.isFinite(-Infinity), false);
test('should return `false` for non-finite values', 1, function() {
var values = [NaN, Infinity, -Infinity, Object(1)],
expected = _.map(values, _.constant(false));
var actual = _.map(values, function(value) {
return _.isFinite(value);
});
deepEqual(actual, expected);
});
test('should return `false` for non-numeric values', 9, function() {
strictEqual(_.isFinite(null), false);
strictEqual(_.isFinite(undefined), false);
strictEqual(_.isFinite([]), false);
strictEqual(_.isFinite(true), false);
strictEqual(_.isFinite(new Date), false);
strictEqual(_.isFinite(new Error), false);
strictEqual(_.isFinite(''), false);
strictEqual(_.isFinite(' '), false);
strictEqual(_.isFinite('2px'), false);
test('should return `false` for non-numeric values', 1, function() {
var values = [undefined, [], true, new Date, new Error, '', ' ', '2px'],
expected = _.map(values, _.constant(false));
var actual = _.map(values, function(value) {
return _.isFinite(value);
});
deepEqual(actual, expected);
});
test('should return `true` for numeric string values', 3, function() {
strictEqual(_.isFinite('2'), true);
strictEqual(_.isFinite('0'), true);
strictEqual(_.isFinite('08'), true);
});
test('should return `false` for numeric string values', 1, function() {
var values = ['2', '0', '08'],
expected = _.map(values, _.constant(false));
test('should work with numbers from another realm', 1, function() {
if (_._object) {
strictEqual(_.isFinite(_._number), true);
}
else {
skipTest();
}
var actual = _.map(values, function(value) {
return _.isFinite(value);
});
deepEqual(actual, expected);
});
}());