public void Question_CannotBeAnsweredBySameUserMoreThanOnce_Throws()
{
// Arrange
var target = new QuestionBuilder().SetupValidQuestion().Build();
var firstAnswer = new AnswerBuilder().SetupValidAnswer(target, new Guid("00000000-0000-0000-0000-000000000001")).Build();
var secondAnswer = new AnswerBuilder().SetupValidAnswer(target, new Guid("00000000-0000-0000-0000-000000000001")).Build();
target.Answer(firstAnswer);
// Act, Assert
Assert.Throws <BusinessException>(() => target.Answer(secondAnswer));
}
public void Question_MoreThanOneAcceptedAnswer_Throws()
{
// Arrange
var target = new QuestionBuilder().SetupValidQuestion().Build();
var firstAnswer = new AnswerBuilder().SetupValidAnswer(target).Build();
var secondAnswer = new AnswerBuilder().SetupAnotherValidAnswer(target).Build();
target.Answer(firstAnswer);
target.Answer(secondAnswer);
target.AcceptAnswer(firstAnswer);
// Act, Assert
Assert.Throws <BusinessException>(() => target.AcceptAnswer(secondAnswer));
}
public void Question_CanBeAnsweredBySameUserOnlyOnce_Sucessfully()
{
// Arrange
var target = new QuestionBuilder().SetupValidQuestion().Build();
var firstAnswer = new AnswerBuilder().SetupValidAnswer(target).Build();
var secondAnswer = new AnswerBuilder().SetupAnotherValidAnswer(target).Build();
// Act
target.Answer(firstAnswer);
target.Answer(secondAnswer);
// Assert
Assert.Equal(2, target.Answers.Count());
Assert.Contains(firstAnswer, target.Answers);
Assert.Contains(secondAnswer, target.Answers);
}
public void Question_NonExistingAnswerCannotBeAccepted_Throws()
{
// Arrange
var limits = new LimitsBuilder().Build();
var target = new QuestionBuilder().SetupValidQuestion().Build();
var firstAnswer = new AnswerBuilder().SetupValidAnswer(target).Build();
var secondAnswer = new AnswerBuilder().SetupAnotherValidAnswer(target).Build();
target.Answer(firstAnswer);
// Act, Assert
Assert.Throws <BusinessException>(() => target.AcceptAnswer(secondAnswer));
}
public void Question_OnAnswered_SetHasAcceptedAnswer()
{
// Arrange
var target = new QuestionBuilder().SetupValidQuestion().Build();
var answer = new AnswerBuilder().SetupValidAnswer(target).Build();
target.Answer(answer);
// Act
target.AcceptAnswer(answer);
// Assert
Assert.True(target.HasAcceptedAnswer);
}
public void Question_UndoAcceptedAnswerOutsideDeadline_Throws()
{
// Arrange
var limits = new LimitsBuilder().Build();
var target = new QuestionBuilder().SetupValidQuestion().Build();
var answer = new AnswerBuilder().SetupValidAnswer(target).Build();
target.Answer(answer);
target.AcceptAnswer(answer);
// 1 minute past deadline
answer.SetProperty(
nameof(answer.AcceptedOn),
DateTime.UtcNow.AddMinutes(-1 - limits.AcceptAnswerDeadline.Minutes));
// Act, Assert
Assert.Throws <BusinessException>(() => target.UndoAcceptAnswer(answer, limits));
}
public void Question_UndoAcceptedAnswerWithinDeadline_Successfully()
{
// Arrange
var limits = new LimitsBuilder().Build();
var target = new QuestionBuilder().SetupValidQuestion().Build();
var answer = new AnswerBuilder().SetupValidAnswer(target).Build();
target.Answer(answer);
target.AcceptAnswer(answer);
// Act
target.UndoAcceptAnswer(answer, limits);
// Assert
Assert.False(target.HasAcceptedAnswer);
Assert.False(answer.IsAcceptedAnswer);
Assert.Null(answer.AcceptedOn);
}
