/*
* Returns a test, as read from the test's file.
* May return null if the file is not opened correctly.
*/
public static Test readTest(Info.TestName testName)
{
List <String> lines = readLines(@"Tests\" + testName.ToString() + ".txt");
if (lines != null)
{
return(parseTest(lines, testName));
}
else
{
return(null);
}
}
/*
* Parses and returns a test.
*/
private static Test parseTest(List <String> lines, Info.TestName testName)
{
Test test = new Test(testName);
// Current line index
int linesIndex = 0;
// The question and answer numbers expected next
int expectedQuestionNumber = 1;
int expectedAnswerNumber = 1;
while (linesIndex < lines.Count)
{
// If the current line starts a question
if (isText(lines[linesIndex]) && parseQuestionNumber(lines[linesIndex]) == expectedQuestionNumber)
{
// Secondary line index
int secondaryLinesIndex = linesIndex + 1;
// Find the end of the question
while (secondaryLinesIndex < lines.Count && beginsWithAQuestionNumber(lines[secondaryLinesIndex]) == false)
{
secondaryLinesIndex++;
}
// Parse the question and add it to the test
test.questions.Add(parseQuestion(
convertLinesToString(lines.GetRange(linesIndex, secondaryLinesIndex - linesIndex))));
linesIndex = secondaryLinesIndex;
expectedQuestionNumber++;
}
// If the current line starts an answer
else if (isACorrectAnswer(lines[linesIndex]) && parseQuestionNumber(lines[linesIndex]) == expectedAnswerNumber)
{
// Secondary line index
int secondaryLinesIndex = linesIndex + 1;
// Find the end of the answer
while (secondaryLinesIndex < lines.Count && beginsWithAQuestionNumber(lines[secondaryLinesIndex]) == false)
{
secondaryLinesIndex++;
}
// Parse the answer and add it to the test
KeyValuePair <char, String> answer = parseAnswer(
convertLinesToString(lines.GetRange(linesIndex, secondaryLinesIndex - linesIndex)));
test.addAnswer(expectedAnswerNumber - 1, answer.Key, answer.Value);
linesIndex = secondaryLinesIndex;
expectedAnswerNumber++;
}
else
{
Console.WriteLine("Problem: Invalid input to parseTest().");
linesIndex++;
}
}
return(test);
}
/*
* Constructor.
*/
public Test(Info.TestName testName)
{
this.testName = testName;
this.questions = new List <TestQuestion>();
}
