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Rust CLI Troubleshooting: Tests, Doctests, and Documentation/Run a subset of tests

Filter tests by name substring.

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Section: Test debugging workflows

Run a subset of tests

bash
bash
cargo test parse_args
Explanation

Useful when tightening the debug loop around one failing CLI behavior.

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Run all tests
Build and run the full test suite.
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Show test output
Print stdout/stderr from tests.
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Run tests serially
Use one test thread to reduce races.
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Run one exact test
Use the exact test name through the test harness.
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Limit the run to a selected member.
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Run doctests only
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