Consolidate integration tests under tests/. Rename build targets to
follow the same pattern.
The important aconfig build targets are:
- aconfig : the aconfig binary
- aconfig.test : the aconfig unit tests
- aconfig.test.java : the Java integration tests
- aconfig.test.cpp : the C++ integration tests
- aconfig.test.rust : the Rust integration tests (not implemented yet)
Note: the Rust integration tests are blocked until the build system has
added support for aconfig Rust libraries.
Note: the flags used in the integration are not set correctly. A
follow-up CL will fix this.
Bug: 283911467
Test: atest aconfig.test.java aconfig.test.cpp
Change-Id: Idb8dad4c38a49231c2e89228775bacf065ee1f57
