Jasmine toEqual not working as expected

Question

I have a Jasmine test like this:

expect(array.length).toEqual(0);

This passes. Out of curiosity I changed it to:

expect(array.length).toEqual(false);

This test fails. I was under the impression that the toEqual method does a not-strict comparison. If we do

console.log(0 == false);

We get the output

true

So why is this test failing?

It does seem to be the case that `toEqual` is merely checking equivalence. http://stackoverflow.com/questions/22413009/javascript-using-methods-to-compare — isherwood, Nov 20 '15 at 16:20
According to what I've seen in the source code, the problem is jasmine 1.x specific. In jasmine 2.x - the test should pass (not tested though). — alecxe, Nov 20 '15 at 16:21
I am using Jasmine 2.3.4 actually. So it seems to still be a problem/feature. — dz210, Nov 20 '15 at 16:52

score 0 · Answer 1 · answered Nov 20 '15 at 17:09

0

Answering my own question after research: jasmine adapts underscore's isEqual method, which does a deep comparison to determine if objects should be equal. So it is a more robust comparison than javascript's standard == comparison.

answered Nov 20 '15 at 17:09

dz210

748
1
8
20

Jasmine toEqual not working as expected

1 Answers1