use java binary that launched current process for subprocess

As a first step of consolidating use of java binary in TF, we
are moving away from using the java binary from path; instead
we are using the same java binary that launched current process
for all subprocess test execution needs.

In the future, some of these use cases will be changed to be
using java binary based on the API level where subprocess
artifacts are obtained (or they'll come pre-packaged with java
binaries).

Bug: 122862400
Test: existing unit tests
Change-Id: I9dc6907cba6af65335ad7e490bb67fbc5b578657
7 files changed
tree: eeb378001fb6033beb79eb837e8a2733a1102519
  1. atest/
  2. clearcut_client/
  3. common_util/
  4. device_build_interfaces/
  5. global_configuration/
  6. invocation_interfaces/
  7. proto/
  8. python-lib/
  9. remote/
  10. res/
  11. src/
  12. test_framework/
  13. test_result_interfaces/
  14. tests/
  15. util-apps/
  16. .classpath
  17. .gitignore
  18. .project
  19. Android.bp
  20. Android.mk
  21. atest_tradefed.sh
  22. CleanSpec.mk
  23. error_prone_rules.mk
  24. MANIFEST.mf
  25. OWNERS
  26. PREUPLOAD.cfg
  27. pylintrc
  28. README.md
  29. run_tf_cmd.sh
  30. script_help.sh
  31. TEST_MAPPING
  32. tradefed.sh
  33. tradefed_win.bat
README.md

Trade Federation (TF / Tradefed)

TF is a test harness used to drive Android automated testing. It runs on test hosts and monitors the connected devices, handling test scheduling & execution and device management.

Other test harnesses like Compatibility Test Suite (CTS) and Vendor Test Suite (VTS) use TF as a basis and extend it for their particular needs.

Building TF:

  • source build/envsetup.sh
  • tapas tradefed-all
  • make -j8

More information at: https://source.android.com/devices/tech/test_infra/tradefed/

See more details about Tradefed Architecture at: https://source.android.com/devices/tech/test_infra/tradefed/architecture

If you are a tests writer you should start looking in the test_framework/ component which contains everything needed to write a tests in Tradefed.