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Fix _.isEquals() for wrapped objects

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This caught me out when writing some unit tests that use _.isEquals().
They were all passing even though I knew they shouldn't be, and I
realised I was checking equality with a wrapped object that I'd
forgotten to unwrap.
This commit is contained in:
Jason Davies
2010-12-03 13:01:58 +00:00
parent c714175cf1
commit 2120b27b22
2 changed files with 8 additions and 3 deletions
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4
test/objects.js
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@@ -51,7 +51,9 @@ $(document).ready(function() {
ok(_.isEqual(new Date(100), new Date(100)), 'identical dates are equal'); ok(_.isEqual(new Date(100), new Date(100)), 'identical dates are equal');
ok(_.isEqual((/hello/ig), (/hello/ig)), 'identical regexes are equal'); ok(_.isEqual((/hello/ig), (/hello/ig)), 'identical regexes are equal');
ok(!_.isEqual(null, [1]), 'a falsy is never equal to a truthy'); ok(!_.isEqual(null, [1]), 'a falsy is never equal to a truthy');
ok(!_.isEqual({x: 1, y: undefined}, {x: 1, z: 2}), 'object with the same number of undefined keys are not equal'); ok(!_.isEqual({x: 1, y: undefined}, {x: 1, z: 2}), 'objects with the same number of undefined keys are not equal');
ok(!_.isEqual(_({x: 1, y: undefined}).chain(), _({x: 1, z: 2}).chain()), 'wrapped objects are not equal');
equals(_({x: 1, y: 2}).chain().isEqual(_({x: 1, y: 2}).chain()).value(), true, 'wrapped objects are equal');
}); });
test("objects: isEmpty", function() { test("objects: isEmpty", function() {

3
underscore.js
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@@ -519,6 +519,9 @@
// Perform a deep comparison to check if two objects are equal. // Perform a deep comparison to check if two objects are equal.
_.isEqual = function(a, b) { _.isEqual = function(a, b) {
// Unwrap any wrapped objects
if (a && a._chain) a = a.value();
if (b && b._chain) b = b.value();
// Check object identity. // Check object identity.
if (a === b) return true; if (a === b) return true;
// Different types? // Different types?