runner/.github/copilot-instructions.md

Making changes

Tests

Whenever possible, changes should be accompanied by non-trivial tests that meaningfully exercise the core functionality of the new code being introduced.

All tests are in the Test/ directory at the repo root. Fast unit tests are in the Test/L0 directory and by convention have the suffix L0.cs. For example: unit tests for a hypothetical src/Runner.Worker/Foo.cs would go in src/Test/L0/Worker/FooL0.cs.

Run tests using this command:

cd src && ./dev.sh test

Formatting

After editing .cs files, always format the code using this command:

cd src && ./dev.sh format

Feature Flags

Wherever possible, all changes should be safeguarded by a feature flag; Features are declared in Constants.cs.