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78%

master: 78%

cron

travis-ci-com

fix(Event Processor): impression event attributes exp, var should be empty instead of null (#718)

## Summary
- experimentId and variationId should be empty if no variation or experiment is found.

## Test plan
- Manually tested
- All tests pass

1094 of 1230 branches covered (88.94%)

Branch coverage included in aggregate %.

9627 of 9805 relevant lines covered (98.18%)

74.39 hits per line