public void ConvertTo_WhenSourceTypeStringAndValueNotDuodecimDate_ReturnTypeToString() { // Arrange var destinationType = typeof(string); var dateToConvert = new SomeTypeThatCannotConvertToDuodecimDate(); var exectedString = dateToConvert.ToString(); var converter = new DuodecimDateConverter(); // Act var actualString = converter.ConvertTo(null, null, dateToConvert, destinationType); // Assert Assert.Equal(exectedString, actualString); }