public void NotDeleteOutsideOfBoundaries(int count)
{
// Arrange
var line = new InMemoryLineView();
// Act, Assert
Assert.Throws <ArgumentOutOfRangeException>(() => line.Delete(count));
}
public void Delete(string startValue, int startPos,
int deleteCount, string expextedValue, int expextedPos)
{
// Arrange
var line = new InMemoryLineView();
line.Type(startValue);
line.MoveTo(startPos);
// Act
line.Delete(deleteCount);
// Assert
Assert.Equal(expextedValue, line.ToString());
Assert.Equal(expextedPos, line.Position);
}