# sandbox | |
`sandbox` is a Rust library for defining capabilities and transferring them | |
between programs. | |
## Building | |
To add this component to your build, append | |
`--with src/sys/component_manager/lib/sandbox:tests` | |
to the `fx set` invocation. | |
## Testing | |
Tests for `sandbox` are available in the `sandbox-tests` and `sandbox-unittests` | |
packages. | |
``` | |
$ fx test sandbox-tests | |
$ fx test sandbox-unittests | |
``` | |