Gaurav Jain f618ab4955 Move away from deprecated asserts
- assertEquals -> assertEqual
- assertRaisesRegexp -> assertRegexpMatches
- assertRegexpMatches -> assertRegex

PiperOrigin-RevId: 319118081
Change-Id: Ieb457128522920ab55d6b69a7f244ab798a7d689
2020-06-30 16:10:22 -07:00
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