SelfValidationTest - Refactored

public void correctExample() {
    assertThat(ConstraintViolations.format(validator.validate(new CorrectExample()))).isEmpty();
    assertThat(TestLoggerFactory.getAllLoggingEvents()).isEmpty();
}

@Test
public void correctExampleTest() {
    this.correctExample();
}

@Test
public void multipleTestingOfSameClass() {
    assertThat(ConstraintViolations.format(validator.validate(new CorrectExample()))).isEmpty();
    this.correctExample();
}