Unit test timeout in Rust

Question

Is there a way to specify a timeout for a specific unit test in Rust?

The only way to do it so add it to the test case as a hardcoded argument: https://docs.rs/ntest/0.7.2/ntest/index.html

But I wanted to ask if there is a way to provide in the command line as an argument to running test. Something like: cargo test <timeout?>

Answer 1

You can get help on the test runner with cargo test -- --help . In particular you will find:

--ensure-time   Treat excess of the test execution time limit as
                error.
                Threshold values for this option can be configured via
                `RUST_TEST_TIME_UNIT`, `RUST_TEST_TIME_INTEGRATION`
                and
                `RUST_TEST_TIME_DOCTEST` environment variables.
                Expected format of environment variable is
                `VARIABLE=WARN_TIME,CRITICAL_TIME`.
                `CRITICAL_TIME` here means the limit that should not
                be exceeded by test.