cargo-test man page

cargo-test — Execute unit and integration tests of a package


cargo test [Options] [--] [<ARGS>...]


Execute all unit and integration tests of a local package.

All of the trailing arguments are passed to the test binaries generated for filtering tests and generally providing options configuring how they run. For example, this will run all tests with the name 'foo' in their name:

cargo test foo

If the --package argument is given, then 'SPEC' is a package id specification which indicates which package should be tested. If it is not given, then the current package is tested. For more information on 'SPEC' and its format, see the "cargo help pkgid" command.

The --jobs argument affects the building of the test executable but does not affect how many jobs are used when running the tests.

Compilation can be configured via the 'test' profile in the manifest.

By default the rust test harness hides output from test execution to keep results readable. Test output can be recovered (e.g. for debugging) by passing --nocapture to the test binaries:

cargo test -- --nocapture


-h, --help

Print this message.


Test only this package's library.


Test only this library's documentation

--bin NAME

Test only the specified binary.

--example NAME

Test only the specified example.

--test NAME

Test only the specified integration test target.

--bench NAME

Test only the specified benchmark target.


Compile, but don't run tests.

-p SPEC, --package SPEC ...

Package to run tests for.

-j IN, --jobs IN

Number of parallel jobs, defaults to # of CPUs.


Build artifacts in release mode, with optimizations.

--features FEATURES

Space-separated list of features to also build.


Build all available features.


Do not build the default feature.

--target TRIPLE

Build for the target triple.

--manifest-path PATH

Path to the manifest to compile.


Run all tests regardless of failure.

-v, --verbose

Use verbose output.

-q, --quiet

No output printed to stdout.

--color WHEN

Coloring: auto, always, never.


Execute all the unit and integration tests of the current package

$ cargo test

Execute the BENCH benchmark

$ cargo test --bench BENCH

See Also

cargo(1), cargo-build(1)

Referenced By

cargo(1), cargo-bench(1).

May 2016 The Rust package manager Cargo Manual