/// <summary>
/// Asserts the answer percentage.
/// </summary>
/// <param name="answer">The answer.</param>
/// <param name="expectedPercentage">The expected percentage.</param>
private static void AssertAnswerPercentage(CompetitionAnswer answer, decimal expectedPercentage)
{
// Arrange
Competition competition = Stubs.StubCompetition();
// Act
decimal percentage = competition.GetPercentageOfEntrants(answer);
// Assert
Assert.AreEqual(expectedPercentage, decimal.Round(percentage, 2));
}