Arrange Section reuse example

UserTests.cs

public class UserTests
{
    [Fact]
    public void Should_fire_event_after_provisioning()
    {
        // Arrange
        Organization organization = CreateOrganization();
        User user = CreateUser(organization);
        Subscription subscription = CreateSubscription(Package.Streamer, organization);

        // Act
        organization.ProvisionUser(user, subscription);

        // Assert
        user.ShouldContainSingleEvent<SeatCreatedEvent>();
    }

    [Fact]
    public void Should_fire_event_after_updating_first_name()
    {
        // Arrange
        Organization organization = CreateOrganization();
        User user = CreateUser(organization);
        FirstName newFirstName = (FirstName)Guid.NewGuid().ToString();

        // Act
        user.SetFirstName(newFirstName);

        // Assert
        user.FirstName.Value.Should().Be(newFirstName);
        user.ShouldContainSingleEvent<UserUpdatedEvent>();
    }
}