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Add mochitests to verify that WebGPU is enabled/disabled to the appropriate degree for the current Firefox build. - In nightly builds, WebGPU should always be available. Specifically, `navigator.gpu.requestAdapter`'s promise should not be rejected. - In early beta builds: - On Windows, `requestAdapter`'s promise should not be rejected. - On all other platforms, it should be rejected. - In late beta and release builds, the `navigator.gpu` property should not be present. In `dom/webgpu/tests/mochitest`: - In the main `mochitest.toml` suite: change the `run-if` condition to match the check used in `gfxPlatform::InitWebGPUConfig`: WebGPU is enabled in nightly builds on all platforms, and in early beta builds on Windows, and is disabled under all other circumstances. - Add a new Mochitest suite, `mochitest-disabled.toml`, to run when we expect `requestAdapter`'s promise to be rejected. - Add two new tests, `test_adapter_enabled.html` and `test_adapter_disabled.html`, to the appropriate suites above, that do nothing but ensure that `requestAdapter`'s promise is resolved/rejected when it should be. - In the `mochitest-no-pref.toml` suite, change the `run-if` condition to match the condition that determines thet `dom.webgpu.enabled` pref's default value. - Add a comment to `gfxPlatform::InitWebGPUConfig` reminding people to update the mochitest conditions, although the test failures will remind them as well. Differential Revision: https://phabricator.services.mozilla.com/D246381
An explanation of the Firefox Source Code Directory Structure and links to
project pages with documentation can be found at:
https://firefox-source-docs.mozilla.org/contributing/directory_structure.html
For information on how to build Firefox from the source code and create the patch see:
https://firefox-source-docs.mozilla.org/contributing/contribution_quickref.html
If you have a question about developing Firefox, and can't find the solution
on https://firefox-source-docs.mozilla.org/, you can try asking your question on Matrix at chat.mozilla.org in `Introduction` (https://chat.mozilla.org/#/room/#introduction:mozilla.org) channel.
Nightly development builds can be downloaded from:
https://archive.mozilla.org/pub/firefox/nightly/latest-mozilla-central/
- or -
https://www.mozilla.org/firefox/channel/desktop/#nightly
Keep in mind that nightly builds, which are used by Firefox developers for
testing, may be buggy.