public TestQuestion(Question question)
{
if (question == null)
throw new ArgumentNullException("question");
this.Question = question;
this.Answers = question.Answers.Shuffle().Select(a => new TestAnswer(a)).ToList();
}
Question ReadQuestion()
{
if (string.IsNullOrWhiteSpace(_curLine))
return null;
var question = new Question { Text = _curLine.Trim() };
if (question.Text.EndsWith(":"))
{
question.Text = question.Text.Substring(0, question.Text.Length - 1);
}
try {
if (!ReadLine())
return null;
int[] nums;
try
{
nums = _curLine.Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries).Select(int.Parse).ToArray();
}
catch (FormatException)
{
throw new ApplicationException("Числа в непонятном формате: " + _curLine);
}
if (nums.Length < 4)
{
ReadUntilBlankLine();
throw new ApplicationException("Чисел должно быть минимум 5: " + _curLine);
}
question.Index = nums[0] + 1;
int answerCount = nums[1];
question.PointPerAnswer = nums[2];
int correctAnswerCount = nums[3];
int[] correctAnswers = nums.Skip(4).ToArray();
while (ReadLine() && !string.IsNullOrWhiteSpace(_curLine))
{
question.Answers.Add(new Answer
{
Text = _curLine,
IsCorrect = correctAnswers.Contains(question.Answers.Count + 1)
});
}
if (question.Answers.Count != answerCount || correctAnswerCount != question.CorrectAnswerCount)
{
var msg = new StringBuilder();
IEnumerable<Answer> answers;
if (question.Answers.Count != answerCount)
{
msg.AppendFormat("Ответов должно быть {0}, а найдено {1}", answerCount, question.Answers.Count);
answers = question.Answers;
}
else
{
msg.AppendFormat("Правильных ответов должно быть {0}, а найдено {1}", correctAnswerCount, question.CorrectAnswerCount);
answers = question.Answers.Where(a => a.IsCorrect);
}
msg.AppendLine(":");
foreach (var ans in answers)
{
msg.AppendLine(ans.Text);
}
throw new ApplicationException(msg.ToString().Trim());
}
return question;
}
catch(Exception ex) {
var msg = string.Format("Ошибка в вопросе '{1}'", question.Index, question.Text);
throw new ApplicationException(msg, ex);
}
}