openmls 0.8.1

A Rust implementation of the Messaging Layer Security (MLS) protocol, as defined in RFC 9420.
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use openmls::{
    prelude::*,
    test_utils::test_framework::{
        noop_authentication_service, ActionType, CodecUse, MlsGroupTestSetup,
    },
};
use openmls_test::openmls_test;

#[openmls_test]
fn test_mls_group_api() {
    // Some basic setup functions for the MlsGroup.
    let mls_group_create_config = MlsGroupCreateConfig::test_default(ciphersuite);
    let number_of_clients = 20;
    let setup = MlsGroupTestSetup::<Provider>::new(
        mls_group_create_config,
        number_of_clients,
        CodecUse::SerializedMessages,
    );

    let group_id = setup
        .create_random_group(3, ciphersuite, noop_authentication_service)
        .expect("An unexpected error occurred.");
    let mut groups = setup.groups.write().expect("An unexpected error occurred.");
    let group = groups
        .get_mut(&group_id)
        .expect("An unexpected error occurred.");

    // Add two new members.
    let (_, adder_id) = group.members().next().unwrap();
    let new_members = setup
        .random_new_members_for_group(group, 2)
        .expect("An unexpected error occurred.");
    setup
        .add_clients(
            ActionType::Commit,
            group,
            &adder_id,
            new_members,
            &noop_authentication_service,
        )
        .expect("An unexpected error occurred.");

    // Remove a member
    let (_, remover_id) = group.members().nth(2).unwrap();
    let (target_index, _) = group.members().nth(3).unwrap();
    setup
        .remove_clients(
            ActionType::Commit,
            group,
            &remover_id,
            &[LeafNodeIndex::new(target_index)],
            noop_authentication_service,
        )
        .expect("An unexpected error occurred.");

    // Check that all group members agree on the same group state.
    setup.check_group_states(group, noop_authentication_service);
}