public void Trimming_TargetIsNull_IsEmpty()
{
// Arrange
string name = null;
var trimCharactersOp = new TrimCharactersOperation();
trimCharactersOp.NumFrontDeleteChars = 1;
var expected = RenameResult.Empty;
// Act
var result = trimCharactersOp.Rename(name, 0);
// Assert
Assert.AreEqual(expected, result);
}
public void Trimming_DeleteNone_IsUnchanged()
{
// Arrange
var name = "Char_Hero";
var trimCharactersOp = new TrimCharactersOperation();
trimCharactersOp.NumFrontDeleteChars = 0;
trimCharactersOp.NumBackDeleteChars = 0;
var expected = new RenameResult()
{
new Diff(name, DiffOperation.Equal)
};
// Act
var result = trimCharactersOp.Rename(name, 0);
// Assert
Assert.AreEqual(expected, result);
}
public void Trimming_DeleteTooManyFromBothDirections_EntireStringIsDeleted()
{
// Arrange
var name = "Char_Hero";
var trimCharactersOp = new TrimCharactersOperation();
trimCharactersOp.NumFrontDeleteChars = name.Length;
trimCharactersOp.NumBackDeleteChars = name.Length;
var expected = new RenameResult()
{
new Diff(name, DiffOperation.Deletion)
};
// Act
var result = trimCharactersOp.Rename(name, 0);
// Assert
Assert.AreEqual(expected, result);
}
public void Trimming_DeleteOneFromBack_IsDeleted()
{
// Arrange
var name = "Char_Hero";
var trimCharactersOp = new TrimCharactersOperation();
trimCharactersOp.NumFrontDeleteChars = 0;
trimCharactersOp.NumBackDeleteChars = 1;
var expected = new RenameResult()
{
new Diff("Char_Her", DiffOperation.Equal),
new Diff("o", DiffOperation.Deletion),
};
// Act
var result = trimCharactersOp.Rename(name, 0);
// Assert
Assert.AreEqual(expected, result);
}
