natsdotnet/tests/NATS.E2E.Tests/Infrastructure/AccountServerFixture.cs

using NATS.Client.Core;

namespace NATS.E2E.Tests.Infrastructure;

public sealed class AccountServerFixture : IAsyncLifetime
{
    private NatsServerProcess _server = null!;

    public int Port => _server.Port;

    public async Task InitializeAsync()
    {
        var config = """
            accounts {
              ACCT_A {
                users = [
                  { user: "user_a", password: "pass_a" }
                ]
              }
              ACCT_B {
                users = [
                  { user: "user_b", password: "pass_b" }
                ]
              }
            }
            """;

        _server = NatsServerProcess.WithConfig(config);
        await _server.StartAsync();
    }

    public async Task DisposeAsync()
    {
        await _server.DisposeAsync();
    }

    public NatsConnection CreateClientA()
    {
        return new NatsConnection(new NatsOpts { Url = $"nats://user_a:pass_a@127.0.0.1:{Port}" });
    }

    public NatsConnection CreateClientB()
    {
        return new NatsConnection(new NatsOpts { Url = $"nats://user_b:pass_b@127.0.0.1:{Port}" });
    }
}

[CollectionDefinition("E2E-Accounts")]
public class AccountsCollection : ICollectionFixture<AccountServerFixture>;