@Test
public void getFullName() {

    // given
    var firstName = "First";
    var lastName = "Last";
    var expectedFullName = String.format("%s %s", firstName, lastName);
    var userData = new UserData()
            .setFirstName(firstName)
            .setLastName(lastName);
    // when
    var actualLastName = userData.getFullName();
    // then
    assertThat(actualLastName).isEqualTo(expectedFullName);
}