Unit test fix for mocha update #548
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RAC: https://rackhd.atlassian.net/browse/RAC-5743
Paired with @PengTian0
Using both
return promiseanddone()in async unit test case will cause following error:Resolution method is overspecified. Specify a callback *or* return a Promise; not both.According to Mocha's official site:
In Mocha v3.0.0 and newer, returning a Promise and calling done() will result in an exceptionSolution
Only call done() instead of return a promise in all async unit test cases.
@PengTian0 @pengz1 @anhou @iceiilin @bbcyyb