KaneAI - World’s First E2E Software Testing Agent.Signup for Private Beta Join TestMu Conference

How to use NullSafeComparator class of org.assertj.core.util package

Best Assertj code snippet using org.assertj.core.util.NullSafeComparator

Source:NullSafeComparatorTests.java

...17import java.util.Comparator;18import org.junit.jupiter.api.Test;19import static org.assertj.core.api.Assertions.assertThat;20/**21 * Tests for {@link NullSafeComparator}.22 *23 * @author Keith Donald24 * @author Chris Beams25 * @author Phillip Webb26 */27class NullSafeComparatorTests {28	@SuppressWarnings("unchecked")29	@Test30	void shouldCompareWithNullsLow() {31		Comparator<String> c = NullSafeComparator.NULLS_LOW;32		assertThat(c.compare(null, "boo") < 0).isTrue();33	}34	@SuppressWarnings("unchecked")35	@Test36	void shouldCompareWithNullsHigh() {37		Comparator<String> c = NullSafeComparator.NULLS_HIGH;38		assertThat(c.compare(null, "boo") > 0).isTrue();39		assertThat(c.compare(null, null) == 0).isTrue();40	}41}...

NullSafeComparator

Using AI Code Generation

1import static org.assertj.core.util.NullSafeComparator.nullSafeComparator;2import static org.assertj.core.api.Assertions.assertThat;3import org.junit.Test;4public class NullSafeComparatorTest {5    public void nullSafeComparatorTest() {6        Integer a = null;7        Integer b = 1;8        assertThat(nullSafeComparator().compare(a, b)).isLessThan(0);9    }10}11	at org.assertj.core.util.NullSafeComparator.compare(NullSafeComparator.java:20)12	at org.assertj.core.util.NullSafeComparatorTest.nullSafeComparatorTest(NullSafeComparatorTest.java:14)

NullSafeComparator

Using AI Code Generation

1import org.assertj.core.util.NullSafeComparator;2import org.junit.jupiter.api.Test;3import static org.assertj.core.api.Assertions.assertThat;4public class NullSafeComparatorTest {5    public void whenComparingNullAndNonNull_thenCorrect() {6        String nullString = null;7        String notNullString = "foo";8        int result = NullSafeComparator.nullSafeCompare(nullString, notNullString);9        assertThat(result).isLessThan(0);10    }11    public void whenComparingNonNullAndNull_thenCorrect() {12        String nullString = null;13        String notNullString = "foo";14        int result = NullSafeComparator.nullSafeCompare(notNullString, nullString);15        assertThat(result).isGreaterThan(0);16    }17    public void whenComparingNullAndNull_thenCorrect() {18        String nullString = null;19        String notNullString = null;20        int result = NullSafeComparator.nullSafeCompare(nullString, notNullString);21        assertThat(result).isEqualTo(0);22    }23    public void whenComparingNonNullAndNonNull_thenCorrect() {24        String string1 = "foo";25        String string2 = "foo";26        int result = NullSafeComparator.nullSafeCompare(string1, string2);27        assertThat(result).isEqualTo(0);28    }29}

NullSafeComparator

Using AI Code Generation

1    import org.assertj.core.util.*;2    import java.util.*;3    import static java.util.Comparator.*;4    import static java.util.Objects.*;5    public class NullSafeComparatorTest {6        public static void main(String[] args) {7            List<String> list = new ArrayList<>();8            list.add("a");9            list.add(null);10            list.add("c");11            list.add("b");12            list.add(null);13            list.add("d");14            list.add("e");15            System.out.println("list = " + list);

NullSafeComparator

Using AI Code Generation

1import org.assertj.core.util.NullSafeComparator;2import org.assertj.core.api.Assertions.assertThat;3import org.assertj.core.api.Assertions.assertThatNullPointerException;4public class NullSafeComparatorTest {5  private static final String NULL = null;6  private static final String NON_NULL = "not null";7  public void should_return_null_if_both_objects_are_null() {8    assertThat(NullSafeComparator.nullSafeCompare(NULL, NULL)).isNull();9  }10  public void should_return_null_if_both_objects_are_not_null_and_equal() {11    assertThat(NullSafeComparator.nullSafeCompare(NON_NULL, NON_NULL)).isNull();12  }13  public void should_return_0_if_both_objects_are_not_null_and_equal() {14    assertThat(NullSafeComparator.nullSafeCompare(NON_NULL, NON_NULL)).isEqualTo(0);15  }16  public void should_return_1_if_first_object_is_null_and_second_is_not() {17    assertThat(NullSafeComparator.nullSafeCompare(NULL, NON_NULL)).isEqualTo(1);18  }19  public void should_return_minus_1_if_first_object_is_not_null_and_second_is() {20    assertThat(NullSafeComparator.nullSafeCompare(NON_NULL, NULL)).isEqualTo(-1);21  }22  public void should_throw_NullPointerException_if_first_object_is_null_and_second_is_not() {23    assertThatNullPointerException().isThrownBy(() -> {24      NullSafeComparator.nullSafeCompare(NULL, NON_NULL);25    });26  }27  public void should_throw_NullPointerException_if_first_object_is_not_null_and_second_is() {28    assertThatNullPointerException().isThrownBy(() -> {29      NullSafeComparator.nullSafeCompare(NON_NULL, NULL);30    });31  }32}

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.