Test `getInstance` for OnDeviceClassifier and PrecomputedClassifier.

Missing test coverage -> http://screen/AhQaJCLemf3kHbR

Test: atest OnDeviceClassifierTest PrecomputedClassifierTest
Fixes: 240207965
Change-Id: Ie0df8f332cde58a1da89b82502c4cfb12394126d
2 files changed
tree: d0c5b9f2b6ebf0ead1cf3b9f11bb5b8d437bda6d
  1. adservices/
  2. apex/
  3. sdksandbox/
  4. groups
  5. OWNERS
  6. PREUPLOAD.cfg
  7. project.config