src/sys/test_runners/rust/test_data/echo-example/meta/echo-test-realm.cml

// Component test example which injects echo_server and launches echo_rust_client
// which is a test which connects to this injected server, tests it and
// passes back result using `fuchsia.test.Suite`
{
    // Two children: a server and client. "echo_rust_client" has "eager" startup so it
    // will be started along with the realm.
    children: [
        {
            name: "echo_server",
            url: "fuchsia-pkg://fuchsia.com/rust-test-runner-example#meta/echo_server.cm",
        },
        {
            name: "echo_rust_client",
            url: "fuchsia-pkg://fuchsia.com/rust-test-runner-example#meta/echo_rust_client.cm",
            startup: "eager",
        },
    ],
    offer: [
        {
            protocol: "fidl.examples.routing.echo.Echo",
            from: "#echo_server",
            to: [ "#echo_rust_client" ],
        },
        {
            protocol: "fuchsia.logger.LogSink",
            from: "parent",
            to: [ "#echo_rust_client" ],
        },
    ],
    expose: [
        {
            protocol: "fuchsia.test.Suite",
            from: "#echo_rust_client",
        },
    ],
}