A quick look over this code from my phone seems to indicate you just copied the test and adjust them. I don't know that we need duplicate tests. I think what we really need to test is making sure that the public contract is correct.

Perhaps that could be a simple as making a call to the async function and then making a call to the callback function and making sure the results are the same except the async function should have returned it in a promise.

Unfortunately, it doesn't work, SAMLResponse are different, I've tried with fake timers but still different, any idea what could be wrong?

OK, I found out it was about the unique id generator, it should be fine now.

Codecov Report

Merging #194 (f82fa38) into master (b850552) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #194   +/-   ##
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  Coverage   80.75%   80.75%           
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  Files          11       11           
  Lines         816      816           
  Branches      247      247           
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  Hits          659      659           
  Misses         71       71           
  Partials       86       86           

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