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# ANGLE Testing Infrastructure
ANGLE runs hundreds of thousands of tests on every change before it lands in
the tree. We scale our pre-commit and post-commit testing to many machines
using [Chromium Swarming][Swarming]. Our testing setup heavily leverages
existing work in Chromium. We also run compile-only
[Standalone Testing][Standalone] that does not depend on a Chromium checkout.
Also see the documentation on [ANGLE Wrangling][Wrangling] for more info.
## Pre-Commit Testing
See the pre-commit try waterfall here:
[`https://ci.chromium.org/p/chromium/g/tryserver.chromium.angle/builders`](https://ci.chromium.org/p/chromium/g/tryserver.chromium.angle/builders)
We currently run pre-commit tests on:
* Windows 32-bit AMD and Windows 64-bit Intel and NVIDIA GPUs
* Linux 64-bit NVIDIA and Intel GPUs
* Mac NVIDIA, Intel and AMD GPUs
* Pixel 2 and Nexus 5X
* Fuchsia testing in a VM
Looking at an example build shows how tests are split up between machines. See for example:
[`https://ci.chromium.org/ui/p/chromium/builders/try/mac-angle-try/454/overview`](https://ci.chromium.org/ui/p/chromium/builders/try/mac-angle-try/454/overview)
This build ran 81 test steps across 3 GPU families. In some cases (e.g.
`angle_deqp_gles3_metal_tests`) the test is split up between multiple machines to
run faster (in this case 4 different machines at once). This build took 15
minutes to complete 1 hour of real automated testing.
For more details on running and working with our test sets see the docs in [Contributing Code][Contrib].
[Swarming]: https://chromium-swarm.appspot.com/
[Standalone]: #ANGLE-Standalone-Testing
[Contrib]: ../doc/ContributingCode.md#Testing
[Wrangling]: ANGLEWrangling.md
## ANGLE Standalone Testing
In addition to the ANGLE try bots using Chrome, and the GPU.FYI bots, ANGLE
has standalone testing on the Chrome infrastructure. Currently these tests are
compile-only. This page is for maintaining the configurations that don't use
Chromium. Also see the main instructions for [ANGLE Wrangling](ANGLEWrangling.md).
It's the ANGLE team's responsibility for maintaining this testing
infrastructure. The bot configurations live in four different repos and six
branches.
## Info Consoles
Continuous builders for every ANGLE revision are found on the CI console:
[https://ci.chromium.org/p/angle/g/ci/console](https://ci.chromium.org/p/angle/g/ci/console)
Try jobs from pre-commit builds are found on the builders console:
[https://ci.chromium.org/p/angle/g/try/builders](https://ci.chromium.org/p/angle/g/try/builders)
## How to add a new build configuration
1. [`bugs.chromium.org/p/chromium/issues/entry?template=Build+Infrastructure`](http://bugs.chromium.org/p/chromium/issues/entry?template=Build+Infrastructure):
* If adding a Mac bot, request new slaves by filing an infra issue.
1. [`chrome-internal.googlesource.com/infradata/config`](http://chrome-internal.googlesource.com/infradata/config):
* Update **`configs/chromium-swarm/starlark/bots/angle.star`** with either Mac slaves requested in the previous step or increase the amount of Windows or Linux GCEs.
1. [`chromium.googlesource.com/chromium/tools/build`](https://chromium.googlesource.com/chromium/tools/build):
* Update **`scripts/slave/recipes/angle.py`** with new the config.
* The recipe code requires 100% code coverage through mock bots, so add mock bot config to GenTests.
* Maybe run `./scripts/slave/recipes.py test train` to update checked-in golden files. This might no longer be necessary.
1. [`chromium.googlesource.com/angle/angle`](http://chromium.googlesource.com/angle/angle):
* Update **`infra/config/global/cr-buildbucket.cfg`** to add the new builder (to ci and try), and set the new config option.
* Update **`infra/config/global/luci-milo.cfg`** to make the builders show up on the ci and try waterfalls.
* Update **`infra/config/global/luci-scheduler.cfg`** to make the builders trigger on new commits or try jobs respectively.
* Update **`infra/config/global/commit-queue.cfg`** to add the builder to the default CQ jobs (if desired).
## Other Configuration
There are other places where configuration for ANGLE infra lives. These are files that we shouldn't need to modify very often:
1. [`chrome-internal.googlesource.com/infradata/config`](http://chrome-internal.googlesource.com/infradata/config):
* **`configs/luci-token-server/service_accounts.cfg`** (service account names)
* **`configs/chromium-swarm/pools.cfg`** (swarming pools)
1. [`chromium.googlesource.com/chromium/tools/depot_tools`](http://chromium.googlesource.com/chromium/tools/depot_tools):
* **`recipes/recipe_modules/gclient/config.py`** (gclient config)