1d36aba57a
feat: Run test mod from anywhere in parent file The "Run" feature of rust-analyzer is super useful, especially for running individual tests or test-modules during development. One common pattern in rust development is to develop tests in the same file as production code, inside a module (usually called `test` or `tests`) marked with `#[cfg(test)]`. Unforunately, this pattern is not well supported by r-a today, as a test module won't show up as a runnable unless the cursor is inside it. In my experience, it is quite common to want to run the tests associated with some production code immediately after editing it, not only after editing the tests themselves. As such it would be better if test modules were available from the "Run" menu even when the cursor is outside the test module. This change updates the filtration logic for runnables in `handlers::handle_runnables` to special case `RunnableKind::TestMod`, making test modules available regardless of the cursor location. Other `RunnableKind`s are unnaffected. Fixes #9589
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