public void ReturnsEmptyStringWhenNullName()
            {
                // Arrange
                var expected = string.Empty;

                // Act
                var actual = CandidateHelper.GetLastName(null);

                // Assert
                Assert.AreEqual(expected, actual);
            }
            public void ReturnsLastNameWhenNameEqualsTwoNames()
            {
                // Arrange
                var expected = "Chan";
                var testName = "Bravo Chan";

                // Act
                var actual = CandidateHelper.GetLastName(testName);

                // Assert
                Assert.AreEqual(expected, actual);
            }