public void IsSubjectIDValidTest()
{
Assert.AreEqual((false, "Missing subject ID!"), SubjectValidation.IsSubjectIDValid(""));
Assert.AreEqual((false, "Invalid subject ID, no special characters allowed!"), SubjectValidation.IsSubjectIDValid("MAT*3"));
Assert.AreEqual((false, "Invalid subject ID, only a single digit is allowed!"), SubjectValidation.IsSubjectIDValid("PSY43"));
Assert.AreEqual((true, ""), SubjectValidation.IsSubjectIDValid("BIO5B"));
}
// Custom Constructor.
/**
* <summary>This custom constructor method is responsible for creating a Subject object.</summary>
*
* <param name="ID">The ID of the subject.</param>
* <param name="name">The name of the subject.</param>
* <param name="actualGrade">The actual subject grade.</param>
* <param name="expectedGrade">The expected subject grade.</param>
*
* <example>
* <code>Subject sub = new Subject("PHY4", "Physics", "B", "A*");</code>
* This creates a Subject object with "PHY4" as the subject ID, "Physics" as the subject name, "B" as the actual grade and "A*" as the expected grade.</example>
*/
public Subject(string ID, string name, string actualGrade, string expectedGrade)
{
if (!SubjectValidation.IsSubjectIDValid(ID).Item1)
{
// Throws an exception with a message dependent on what invalidates the subject ID.
throw new ArgumentException(SubjectValidation.IsSubjectIDValid(ID).Item2);
}
else
{
GetSubjectID = ID;
}
if (!SubjectValidation.IsSubjectNameValid(name).Item1)
{
// Throws an exception with a message dependent on what invalidates the subject name.
throw new ArgumentException(SubjectValidation.IsSubjectNameValid(name).Item2);
}
else
{
GetSubjectName = name;
}
if (!SubjectValidation.IsSubjectGradeValid(actualGrade, "actual").Item1)
{
// Throws an exception with a message dependent on what invalidates the subject's actual grade.
throw new ArgumentException(SubjectValidation.IsSubjectIDValid(ID).Item2);
}
else
{
GetActualGrade = actualGrade;
}
if (!SubjectValidation.IsSubjectGradeValid(expectedGrade, "expected").Item1)
{
// Throws an exception with a message dependent on what invalidates the subject's expected grade.
throw new ArgumentException(SubjectValidation.IsSubjectIDValid(ID).Item2);
}
else
{
GetExpectedGrade = expectedGrade;
}
}