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Also document the state of FOG testing at the present time. Differential Revision: https://phabricator.services.mozilla.com/D73061
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Testing
Given the multiple API languages, processes, and dependencies, testing FOG is a matter of choosing the right tool for the situation.
Rust
Not all of our Rust code can be tested in a single fashion, unfortunately.
Using rusttests
If the crate you're testing has no Gecko symbols you can write standard Rust tests.
This supports both unit tests
(inline in the file under test) and integration tests
(in the tests/ folder in the crate root).
To run FOG's rusttests suite use mach rusttests
Using gtest
Because Gecko symbols aren't built for the
rusttests build,
any test that is written for a crate that uses Gecko symbols should be written as a
gtest
in toolkit/components/glean/gtest/.
By necessity these can only be integration tests against the compiled crate.
Note: When adding a new test file, don't forget to add it to
toolkit/components/glean/gtest/moz.build and use the
FOG prefix in your test names.
To run FOG's Rust gtest suite use mach gtest FOG.*