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# Car Services Tests and Test Apps

This directory contains unit tests, instrumentation tests and sample apps.

## Structure

```
CarHiddenApiTest/            - Car hidden API tests, they use the real services
CarExtendedApiTest/          - Car API instrumentation tests that cannot be tested with CTS, they
                               use the real services
CarLibUnitTest/              - Car API unit tests
CarServiceTest/              - Car service instrumentation tests, mocks VHAL
CarServiceUnitTest/          - Car service unit tests
common_utils/                - Shared utility library

# The following test directories are located relative to $ANDROID_BUILD_TOP
cts/hostsidetests/car/                      - Host-driven CTS tests
cts/tests/tests/car/                        - CTS tests (prefer this over hostsidetests)
frameworks/hardware/interfaces/automotive/  - Contains `vts/` folders for tests
hardware/interfaces/automotive/             - Contains `vts/` folders for tests
test/vts-testcase/hal/automotive/           - Host-side VTS tests
```

## Where to add tests

Add necessary tests to all the test suits, and also don't forget to add ATS/CTS/VTS. See
https://source.android.com/compatibility/tests to learn more about CTS/VTS.

Try not to repeat the same test in multiple suits, as it creates unnecessary test maintenance.

Add tests using these priorities:

1. CTS/VTS
2. `CarSecurityPermissionTest`
3. `CarExtendedApiTest` - if CTS doesn't cover
4. `CarHiddenApiTest` - if APIs are hidden
5. `CarServiceTest`