public void MutantDetector_IsDnaValid_OneInvalidWhiteSpaceInTheMiddle_Fails()
{
//Arrange
MutantDetector detector = new MutantDetector();
string[] dna = { "AGT", "A C", "CCW" }; //==> " " is invalid
//Action & Asserts
DnaInvalidException ex = Assert.ThrowsException <DnaInvalidException>(() => detector.IsDnaValid(dna));
Assert.AreEqual(ErrorMessages.k_DnaMustContainsValidLetters, ex.Message);
}
public void MutantDetector_IsDnaValid_OneInvalidLetterAtTheBeginning_Fails()
{
//Arrange
MutantDetector detector = new MutantDetector();
string[] dna = { "WAG", "ATC", "CCT" }; //==> W is invalid
//Action & Asserts
DnaInvalidException ex = Assert.ThrowsException <DnaInvalidException>(() => detector.IsDnaValid(dna));
Assert.AreEqual(ErrorMessages.k_DnaMustContainsValidLetters, ex.Message);
}
public void MutantDetector_IsDnaValid_DnaEmptyInMiddle_Fails()
{
//Arrange
MutantDetector detector = new MutantDetector();
string[] dna = { "AGA", " ", "CCT" };
//Action & Asserts
DnaInvalidException ex = Assert.ThrowsException <DnaInvalidException>(() => detector.IsDnaValid(dna));
Assert.AreEqual(ErrorMessages.k_DnaCannotHasNullsOrEmpty, ex.Message);
}
public void MutantDetector_IsDnaValid_DnaNxM_Fails()
{
//Arrange
MutantDetector detector = new MutantDetector();
string[] dna = { "AGA", "AT", "CCT" };
//Action & Asserts
DnaInvalidException ex = Assert.ThrowsException <DnaInvalidException>(() => detector.IsDnaValid(dna));
Assert.AreEqual(ErrorMessages.k_DnaMustBeNxN, ex.Message);
}
public void MutantDetector_IsDnaValid_DnaInNull_Fails()
{
//Arrange
MutantDetector detector = new MutantDetector();
string[] dna = null;
//Action & Asserts
DnaInvalidException ex = Assert.ThrowsException <DnaInvalidException>(() => detector.IsDnaValid(dna));
Assert.AreEqual(ErrorMessages.k_DnaCannotBeNull, ex.Message);
}
