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_.isFinite fix and tests

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This commit is contained in:
Raymond May Jr
2012-03-25 11:08:23 -05:00
parent 705eff4826
commit e274235865
2 changed files with 12 additions and 1 deletions
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11
test/objects.js
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@@ -481,6 +481,17 @@ $(document).ready(function() {
ok(_.isRegExp(iRegExp), 'even from another frame');
});
test("objects: isFinite", function() {
ok(!_.isFinite(undefined), 'undefined is not Finite');
ok(!_.isFinite(null), 'null is not Finite');
ok(!_.isFinite(Infinity), 'Infinity is not Finite');
ok(!_.isFinite(-Infinity), '-Infinity is not Finite');
ok(!_.isFinite('12'), 'Strings are not numbers');
ok(_.isFinite(0), '0 is Finite');
ok(_.isFinite(123), 'Ints are Finite');
ok(_.isFinite(-12.44), 'Floats are Finite');
});
test("objects: isNaN", function() {
ok(!_.isNaN(undefined), 'undefined is not NaN');
ok(!_.isNaN(null), 'null is not NaN');

2
underscore.js
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@@ -814,7 +814,7 @@
// Is a givin number finite?
_.isFinite = function(obj) {
return obj > -1/0 && obj < 1/0 && obj === -obj;
return obj > -1/0 && obj < 1/0 && obj === +obj;
};
// Is the given value `NaN`?