src/lib/fuchsia-component/tests/components_v2/lib.rs

// Copyright 2020 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

use {
    anyhow::Error,
    fuchsia_async as fasync, fuchsia_syslog as syslog,
    log::*,
    test_utils_lib::{
        events::{EventMatcher, Ordering, Stopped},
        test_utils::BlackBoxTest,
    },
};

#[fasync::run_singlethreaded(test)]
async fn scoped_instances() -> Result<(), Error> {
    syslog::init_with_tags(&["fuchsia_component_v2_test"]).expect("could not initialize logging");
    let test =
        BlackBoxTest::default("fuchsia-pkg://fuchsia.com/fuchsia-component-tests#meta/realm.cm")
            .await?;

    let event_source = test.connect_to_event_source().await?;
    let event =
        EventMatcher::new().expect_type::<Stopped>().expect_moniker("./coll:auto-*".to_string());
    let expected_events: Vec<_> = (0..3).map(|_| event.clone()).collect();
    let expectation = event_source.expect_events(Ordering::Unordered, expected_events).await?;

    event_source.start_component_tree().await?;
    info!("Waiting for scoped instances to be destroyed");
    expectation.await?;
    Ok(())
}