surfaceflinger_end2end_tests

Tests to cover end to end testing of SurfaceFlinger.

In particular the test framework allows you to simulate various display configurations, so the test can confirm displays are handled correctly.

Quick Useful info

Running the tests

At present the tests should run on any target, though the typical target would be a Cuttlefish VM target such as aosp_cf_x86_64_phone.

At some future time the test may be rewritten to require vkms and drm_hwcomposer

atest surfaceflinger_end2end_tests

You can also run the google test binary directly. However you will also need to run a few other set-up and tear-down commands that are part of the AndroidTest.xml configuration, so that SurfaceFlinger can be used run isolation from the rest of the system.

# Set-up
adb root
adb shell stop
adb shell setenforce 0
adb shell setprop debug.sf.nobootanimation 1

# Sync and run the test
adb sync data
adb shell data/nativetest64/surfaceflinger_end2end_tests/surfaceflinger_end2end_tests

# Tear-down
adb shell stop
adb shell setenforce 1
adb shell setprop debug.sf.nobootanimation 0
adb shell setprop debug.sf.hwc_service_name default

Manual clang-tidy checks via Soong

At present Android does not run the clang-tidy checks as part of its presubmit checks.

You can run them through the build system by using phony target that are automatically created for each source subdirectory.

For the code under frameworks/native/services/surfaceflinger/tests/end2end, you would build:

m tidy-frameworks-native-services-surfaceflinger-tests-end2end

For more information see the build documentation:

• https://android.googlesource.com/platform/build/soong/+/main/docs/tidy.md#the-tidy_directory-targets

Seeing clang-tidy checks in your editor

If your editor supports using clangd as a C++ language server, you can build and export a compilation database using Soong. With the local .clangd configuration file, you should see the same checks in editor, along with all the other checks clangd runs.

See the build documentation for the compilation database instructions:

https://android.googlesource.com/platform/build/soong/+/main/docs/compdb.md