public void ItCreatesNullObjectCorrectly()
{
Score score = new NullScore();
Assert.IsType <NullScore>(score);
score.IncreaseScore(3);
Assert.Equal(0, score.Number);
score = new RealScore();
score.IncreaseScore(3);
Assert.Equal(3, score.Number);
}
/// <summary>
/// Allows delimiter: / or :
/// </summary>
/// <param name="score"></param>
/// <returns></returns>
public Score Parse(string score)
{
var nullScore = new NullScore();
if (string.IsNullOrEmpty(score))
{
return(nullScore);
}
score = score.Replace(" ", "");
// All possible delimiters
Stack <string> delimiters = new Stack <string>();
delimiters.Push("/");
delimiters.Push(":");
delimiters.Push("-");
var delimiter = delimiters.Pop();
while (score.IndexOf(delimiter) < 0)
{
if (delimiters.Count == 0)
{
return(nullScore);
}
delimiter = delimiters.Pop();
}
var scores = score.Split(delimiter.ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
if (scores.Length < 2)
{
// invalid score
return(nullScore);
}
var homeScore = -1;
var awayScore = -1;
int.TryParse(scores[0].Trim(), out homeScore);
int.TryParse(scores[1].Trim(), out awayScore);
return(new Score(homeScore, awayScore));
}
