/// <summary>
/// Checks that the first record in the list of records is of type <typeparamref name="T"/> and involves the specified state.
/// The record is removed after the check.
/// </summary>
/// <typeparam name="T">Type of the record.</typeparam>
/// <param name="state">The state.</param>
private void CheckRecord <T>(StateMachine.States state) where T : Record
{
Record record = this.records.FirstOrDefault();
var x = record.As <T>();
record.Should().NotBeNull();
record.Should().BeAssignableTo <T>();
// ReSharper disable once PossibleNullReferenceException
record.State.Should().Be(state, record.Message);
this.records.RemoveAt(0);
}
