add tests to equalTo with more than one condition and with the same key

[igor-mobapps]

tests for the problem listed here #476

[dplewis]

@igor-mobapps Thanks for the well-written test cases! Can you update from master so the build can pass?

I tried your tests locally and they passed.

[codecov[bot]]

Codecov Report

Patch and project coverage have no change.

Comparison is base (77b06f4) 98.60% compared to head (fedcf10) 98.60%.

:exclamation: Current head fedcf10 differs from pull request most recent head 4f61d83. Consider uploading reports for the commit 4f61d83 to get more accurate results

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #477   +/-   ##
=========================================
  Coverage     98.60%   98.60%           
  Complexity     1062     1062           
=========================================
  Files            38       38           
  Lines          3229     3229           
=========================================
  Hits           3184     3184           
  Misses           45       45           

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[dplewis]

Closing via https://github.com/parse-community/parse-php-sdk/pull/510