Hello World Components

This directory contains simple components to show how components are built, run, and tested in the system.


If these components are not present in your build, they can be added by appending --with //examples to your fx set command. Eg:

$ fx set core.x64 --with //examples --with //examples:tests --with //src/sys/run_test_suite
$ fx build

(Disclaimer: if these build rules become out-of-date, please check the Build documentation and update this README!)


Use the locate tool to find the fuchsia-pkg URLs of these components:

$ fx shell locate hello_world

Pick the URL of a component, and provide it to run:

$ fx shell run 'fuchsia-pkg://fuchsia.com/hello_world_rust#meta/hello_world_rust.cm'

Make sure you have fx serve running in another terminal so your component can be installed!


To run one of the test components defined here, use fx run-test with the package name:

$ fx run-test hello_world_rust_tests

To run the tests as a Components Framework v2 component, use fx shell run-test-suite:

fx shell run-test-suite 'fuchsia-pkg://fuchsia.com/hello_world_rust_tests#meta/hello_world_rust_bin_test.cm'