KaneAI - World’s First E2E Software Testing Agent.Book a Demo Join TestMu Conference

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

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

...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}

Blogs

Check out the latest blogs from LambdaTest on this topic:

Difference Between Web And Mobile Application Testing

Smartphones have changed the way humans interact with technology. Be it travel, fitness, lifestyle, video games, or even services, it’s all just a few touches away (quite literally so). We only need to look at the growing throngs of smartphone or tablet users vs. desktop users to grasp this reality.

Appium Testing Tutorial For Mobile Applications

The count of mobile users is on a steep rise. According to the research, by 2025, it is expected to reach 7.49 billion users worldwide. 70% of all US digital media time comes from mobile apps, and to your surprise, the average smartphone owner uses ten apps per day and 30 apps each month.

Your Favorite Dev Browser Has Evolved! The All New LT Browser 2.0

We launched LT Browser in 2020, and we were overwhelmed by the response as it was awarded as the #5 product of the day on the ProductHunt platform. Today, after 74,585 downloads and 7,000 total test runs with an average of 100 test runs each day, the LT Browser has continued to help developers build responsive web designs in a jiffy.

Project Goal Prioritization in Context of Your Organization’s Strategic Objectives

One of the most important skills for leaders to have is the ability to prioritize. To understand how we can organize all of the tasks that must be completed in order to complete a project, we must first understand the business we are in, particularly the project goals. There might be several project drivers that stimulate project execution and motivate a company to allocate the appropriate funding.

24 Testing Scenarios you should not automate with Selenium

While there is a huge demand and need to run Selenium Test Automation, the experts always suggest not to automate every possible test. Exhaustive Testing is not possible, and Automating everything is not sustainable.

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.