/// <summary>
/// Creates new test
/// </summary>
/// <param name="test"></param>
/// <returns>Returns TestId of supplied test</returns>
public async Task <int> CreateTestAsync(TestDto test)
{
ThrowIfTestIsInvalid(test);
Test newTest = new Test();
test.UpdateEntity(newTest);
List <Question> testQuestions = new List <Question>(test.Questions.Count);
foreach (QuestionDto questionDto in test.Questions)
{
ThrowIfQuestionIsInvalid(questionDto);
// if questions for passing is zero, than it is like quiz. Whatewer you will pass is.
// if questons count is zero, than current test should contains them all
// questions count in test.
if (test.QuestionsCount == 0)
{
newTest.QuestionsCount++;
}
Question question = new Question();
questionDto.UpdateEntity(question);
if (questionDto.QuestionTypeId == QuestionTypeEnum.Closed)
{
List <QuestionAnswerOption> options = new List <QuestionAnswerOption>(questionDto.Options.Count);
foreach (QuestionAnswerOptionDto answerOption in questionDto.Options)
{
QuestionAnswerOption option = new QuestionAnswerOption();
answerOption.UpdateEntity(option);
options.Add(option);
}
question.QuestionAnswerOptions = options;
}
testQuestions.Add(question);
}
testQuestions.ForEach(q => newTest.Questions.Add(q));
context.Tests.Add(newTest);
await context.SaveChangesAsync();
return(newTest.Id);
}