public void Validate_ExistingDir_ValidationFails()
        {
            //arrange
            var sut = new SourceDirInfoValidator();

            //act
            var result = sut.Validate(_dirInfo);

            //assert
            Assert.True(result.IsValid, "Validation succeeded as dirInfo does exists.");
        }
        public void Validate_NotExistingDir_ValidationFails()
        {
            //arrange
            var nonExistDirInfo = new DirectoryInfo(Path.Combine(_dirInfo.FullName, "NOT_EXISTS"));
            var sut             = new SourceDirInfoValidator();

            //act
            var result = sut.Validate(nonExistDirInfo);

            //assert
            Assert.False(result.IsValid, "Validation should NOT succeeded as dirInfo does not exists.");
        }