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src/docs/fuchsia/gpu_testing.md
Shahbaz Youssefi 45c205e717 Add note to Fuchsia GPU testing doc
The note is that `fx serve` is required to be running for the test
scripts to actually work.

Bug: 1088005
Change-Id: I5a7ed416e676ae3a4dbe4329d712bf81041196b9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2781546
Reviewed-by: Sharon Yang <yangsharon@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#865971}
2021-03-24 03:32:00 +00:00

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# Running GPU integration tests on Fuchsia.
General instruction on running and debugging GPU integration tests can be
found [here](../gpu/gpu_testing.md).
Fuchsia uses [web_engine_shell](../../fuchsia/engine/test/README.md) to run GPU
integration tests. For the sake of this example, we will be using `gpu_process`
as the test suite we wish to execute. Build the target
`fuchsia_telemetry_gpu_integration_test` and run the appropriate commands:
## Hermetic emulation
The test script brings up an emulator, runs the tests on it, and shuts the
emulator down when finished.
```bash
$ content/test/gpu/run_gpu_integration_test_fuchsia.py gpu_process
--browser=web-engine-shell --out-dir=/path/to/outdir
```
## Run on an physical device
```bash
$ content/test/gpu/run_gpu_integration_test_fuchsia.py gpu_process
--browser=web-engine-shell --out-dir=/path/to/outdir -d
```
## Run on a device paved with Fuchsia built from source
```bash
$ content/test/gpu/run_gpu_integration_test_fuchsia.py gpu_process
--browser=web-engine-shell --out-dir=/path/to/outdir -d
--fuchsia-out-dir=/path/to/fuchsia/outdir
```
Note that `fx serve` must be running for communication with the device to
succeed.
## Run on a device the host is connected to remotely via ssh
Note the `--ssh-config` flag, which should point to the config file used to set
up the connection between the host and the remote device.
```bash
$ content/test/gpu/run_gpu_integration_test_fuchsia.py gpu_process
--browser=web-engine-shell --out-dir=/path/to/outdir -d --host=localhost
--ssh-config=/path/to/ssh/config
```