tonihei 05a77eef5d Move Extractor test assertion methods to ExtractorAsserts class.
This cleans up test the TestUtil class that in large parts consisted of
assertions for Extractor tests.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=160829066
2017-07-05 15:02:39 +01:00
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