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deepEqual doesn't always show an object diff

See original GitHub issue

I have seen lots of things like AssertionError: expected [ Array(2) ] to deeply equal [ Array(2) ] when the objects being compared are very similar and a diff would be useful. I think I have seen chai do this often in the past but not at 3.0.0.

Issue Analytics

State:
Created 8 years ago
Reactions:12
Comments:20 (9 by maintainers)

Top GitHub Comments

47reactions

fabiosussettocommented, Oct 19, 2015

This currently works for me (using Karma as the test runner):

chai.config.truncateThreshold = 0

Without it I only see “expected [ Array(1) ] to deeply equal [ Array(1) ]”

7reactions

keithamuscommented, Nov 4, 2015

Also, I’m going to reiterate this point again:

Chai does not do diffs. If you’re not seeing diffs, then that is an issue with your test runner (e.g. mocha). You should totally file an issue with your test runner about this, here is one for mocha’s html reporter: https://github.com/mochajs/mocha/issues/1348

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