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How to use assertMaintainsEqualsAndHashCodeContract method of org.assertj.core.test.EqualsHashCodeContractAssert class
Best Assertj code snippet using org.assertj.core.test.EqualsHashCodeContractAssert.assertMaintainsEqualsAndHashCodeContract
Source:TextDescription_equals_hashCode_Test.java 
...14import static org.assertj.core.api.Assertions.assertThat;15import static org.assertj.core.test.EqualsHashCodeContractAssert.assertEqualsIsReflexive;16import static org.assertj.core.test.EqualsHashCodeContractAssert.assertEqualsIsSymmetric;17import static org.assertj.core.test.EqualsHashCodeContractAssert.assertEqualsIsTransitive;18import static org.assertj.core.test.EqualsHashCodeContractAssert.assertMaintainsEqualsAndHashCodeContract;19import org.junit.jupiter.api.BeforeAll;20import org.junit.jupiter.api.Test;21/**22 * Tests for <code>{@link TextDescription#equals(Object)}</code> and <code>{@link TextDescription#hashCode()}</code>.23 * 24 * @author Alex Ruiz25 */26class TextDescription_equals_hashCode_Test {27 private static TextDescription description;28 @BeforeAll29 public static void setUpOnce() {30 description = new TextDescription("Yoda");31 }32 @Test33 void should_have_reflexive_equals() {34 assertEqualsIsReflexive(description);35 }36 @Test37 void should_have_symmetric_equals() {38 assertEqualsIsSymmetric(description, new TextDescription("Yoda"));39 }40 @Test41 void should_have_transitive_equals() {42 assertEqualsIsTransitive(description, new TextDescription("Yoda"), new TextDescription("Yoda"));43 }44 @Test45 void should_maintain_equals_and_hashCode_contract() {46 assertMaintainsEqualsAndHashCodeContract(description, new TextDescription("Yoda"));47 }48 @Test49 void should_not_be_equal_to_Object_of_different_type() {50 assertThat(description.equals("Yoda")).isFalse();51 }52 @Test53 void should_not_be_equal_to_null() {54 assertThat(description.equals(null)).isFalse();55 }56 @Test57 void should_not_be_equal_to_TextDescription_with_different_value() {58 assertThat(description.equals(new TextDescription("Luke"))).isFalse();59 }60}...
Source:Delta_equals_hashCode_Test.java
...14import static org.assertj.core.api.Assertions.assertThat;15import static org.assertj.core.test.EqualsHashCodeContractAssert.assertEqualsIsReflexive;16import static org.assertj.core.test.EqualsHashCodeContractAssert.assertEqualsIsSymmetric;17import static org.assertj.core.test.EqualsHashCodeContractAssert.assertEqualsIsTransitive;18import static org.assertj.core.test.EqualsHashCodeContractAssert.assertMaintainsEqualsAndHashCodeContract;19import java.util.Collections;20import org.junit.jupiter.api.BeforeEach;21import org.junit.jupiter.api.Test;22class Delta_equals_hashCode_Test {23 private Chunk<String> chunk;24 private Delta<String> delta;25 @BeforeEach26 public void setUp() {27 chunk = new Chunk<>(1, Collections.emptyList());28 delta = new ChangeDelta<>(chunk, chunk);29 }30 @Test31 void should_have_reflexive_equals() {32 assertEqualsIsReflexive(delta);33 }34 @Test35 void should_have_symmetric_equals() {36 assertEqualsIsSymmetric(delta, new ChangeDelta<>(chunk, chunk));37 }38 @Test39 void should_have_transitive_equals() {40 assertEqualsIsTransitive(delta, new ChangeDelta<>(chunk, chunk), new ChangeDelta<>(chunk, chunk));41 }42 @Test43 void should_maintain_equals_and_hashCode_contract() {44 assertMaintainsEqualsAndHashCodeContract(delta, new ChangeDelta<>(chunk, chunk));45 }46 @Test47 void should_not_be_equal_to_Object_of_different_type() {48 assertThat(delta.equals("8")).isFalse();49 }50 @Test51 void should_not_be_equal_to_null() {52 assertThat(delta.equals(null)).isFalse();53 }54 @Test55 void should_not_be_equal_to_Delta_with_different_value() {56 Chunk<String> chunk2 = new Chunk<>(5, Collections.emptyList());57 assertThat(delta.equals(new ChangeDelta<>(chunk2, chunk2))).isFalse();58 }...
Source:ChunkTest.java
...15import static org.assertj.core.api.Assertions.assertThat;16import static org.assertj.core.test.EqualsHashCodeContractAssert.assertEqualsIsReflexive;17import static org.assertj.core.test.EqualsHashCodeContractAssert.assertEqualsIsSymmetric;18import static org.assertj.core.test.EqualsHashCodeContractAssert.assertEqualsIsTransitive;19import static org.assertj.core.test.EqualsHashCodeContractAssert.assertMaintainsEqualsAndHashCodeContract;20import org.junit.jupiter.api.BeforeEach;21import org.junit.jupiter.api.Test;22class ChunkTest {23 private Chunk<String> chunk;24 @BeforeEach25 public void setUp() {26 chunk = new Chunk<>(1, emptyList());27 }28 @Test29 void should_have_reflexive_equals() {30 assertEqualsIsReflexive(chunk);31 }32 @Test33 void should_have_symmetric_equals() {34 assertEqualsIsSymmetric(chunk, new Chunk<>(1, emptyList()));35 }36 @Test37 void should_have_transitive_equals() {38 assertEqualsIsTransitive(chunk, new Chunk<>(1, emptyList()), new Chunk<>(1, emptyList()));39 }40 @Test41 void should_maintain_equals_and_hashCode_contract() {42 assertMaintainsEqualsAndHashCodeContract(chunk, new Chunk<>(1, emptyList()));43 }44 @Test45 void should_not_be_equal_to_Object_of_different_type() {46 assertThat(chunk.equals("8")).isFalse();47 }48 @Test49 void should_not_be_equal_to_null() {50 assertThat(chunk.equals(null)).isFalse();51 }52 @Test53 void should_not_be_equal_to_Chunk_with_different_value() {54 assertThat(chunk.equals(new Chunk<>(2, emptyList()))).isFalse();55 }56 @Test...
assertMaintainsEqualsAndHashCodeContract
Using AI Code Generation
1import org.assertj.core.test.EqualsHashCodeContractAssert;2import org.assertj.core.test.EqualsHashCodeContractTestCase;3import org.junit.Test;4public class EqualsHashCodeContractTest implements EqualsHashCodeContractTestCase {5 public void should_maintain_equals_and_hashCode_contract() {6 EqualsHashCodeContractAssert.assertMaintainsEqualsAndHashCodeContract(CustomClass.class);7 }8}9package org.assertj.core.test;10import static org.assertj.core.api.Assertions.assertThat;11import static org.assertj.core.api.Assertions.assertThatNullPointerException;12import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;13import static org.assertj.core.api.Assertions.assertThatExceptionOfType;14import java.util.function.Supplier;15import org.assertj.core.api.ThrowableAssert.ThrowingCallable;16import org.assertj.core.internal.Objects;17import org.junit.Test;18public class EqualsHashCodeContractAssert {19 private static final Objects objects = Objects.instance();20 private EqualsHashCodeContractAssert() {}21 public static void assertMaintainsEqualsAndHashCodeContract(Class<?> clazz) {22 assertHasValidEqualsMethod(clazz);23 assertHasValidHashCodeMethod(clazz);24 assertHasValidEqualsAndHashCodeContract(clazz);25 }26 private static void assertHasValidEqualsMethod(Class<?> clazz) {27 assertThatNullPointerException().isThrownBy(() -> clazz.getDeclaredMethod("equals", Object.class))28 .withMessage("equals method should not be null");29 }30 private static void assertHasValidHashCodeMethod(Class<?> clazz) {31 assertThatNullPointerException().isThrownBy(() -> clazz.getDeclaredMethod("hashCode"))32 .withMessage("hashCode method should not be null");33 }34 private static void assertHasValidEqualsAndHashCodeContract(Class<?> clazz) {35 Object instance = newInstance(clazz);36 assertThatNullPointerException().isThrownBy(() -> instance.equals(null))37 .withMessage("equals should throw NullPointerException when called with null");38 assertThatIllegalArgumentException().isThrownBy(() -> instance.equals("other type"))39 .withMessage("equals should throw IllegalArgumentException when called with an object of another type");40 assertThatExceptionOfType(ClassCastException.class).isThrownBy(() -> instance.equals(new Object()))41 .withMessage("equals should throw ClassCastException when called with an object of another type");42 }43 private static Object newInstance(Class<?> clazz) {44 try {45 return clazz.newInstance();46 } catch (Exception e) {47 throw new IllegalArgumentException("Unable to create new instance of " + clazz.getName(), e);48 }49 }50}
assertMaintainsEqualsAndHashCodeContract
Using AI Code Generation
1package org.example;2import org.assertj.core.test.EqualsHashCodeContractAssert;3import org.junit.jupiter.api.Test;4public class EqualsHashCodeContractAssertTest {5 public void testAssertMaintainsEqualsAndHashCodeContract() {6 EqualsHashCodeContractAssert.assertMaintainsEqualsAndHashCodeContract(1, 2);7 }8}9 at org.example.EqualsHashCodeContractAssertTest.testAssertMaintainsEqualsAndHashCodeContract(EqualsHashCodeContractAssertTest.java:12)
assertMaintainsEqualsAndHashCodeContract
Using AI Code Generation
1import static org.assertj.core.api.Assertions.assertThat;2import static org.assertj.core.test.EqualsHashCodeContractAssert.assertMaintainsEqualsAndHashCodeContract;3import org.assertj.core.test.EqualsHashCodeContractAssert;4import org.junit.Test;5class Test1 {6 public void test_equals_hashCode_contract() {7 assertMaintainsEqualsAndHashCodeContract(new Employee("John", "Doe", 30),8 new Employee("John", "Doe", 30));9 }10}11import static org.assertj.core.api.Assertions.assertThat;12import static org.assertj.core.test.EqualsHashCodeContractAssert.assertMaintainsEqualsAndHashCodeContract;13import org.assertj.core.test.EqualsHashCodeContractAssert;14import org.junit.Test;15class Test2 {16 public void test_equals_hashCode_contract() {17 assertMaintainsEqualsAndHashCodeContract(new Employee("John", "Doe", 30),18 new Employee("John", "Doe", 30));19 }20}21import static org.assertj.core.api.Assertions.assertThat;22import static org.assertj.core.test.EqualsHashCodeContractAssert.assertMaintainsEqualsAndHashCodeContract;23import org.assertj.core.test.EqualsHashCodeContractAssert;24import org.junit.Test;25class Test3 {26 public void test_equals_hashCode_contract() {27 assertMaintainsEqualsAndHashCodeContract(new Employee("John", "Doe", 30),28 new Employee("John", "Doe", 30));29 }30}31import static org.assertj.core.api.Assertions.assertThat;32import static org.assertj.core.test.EqualsHashCodeContractAssert.assertMaintainsEqualsAndHashCodeContract;33import org.assertj.core.test.EqualsHashCodeContractAssert;34import org.junit.Test;35class Test4 {36 public void test_equals_hashCode_contract() {37 assertMaintainsEqualsAndHashCodeContract(new Employee("John", "Doe", 30),38 new Employee("John", "Doe", 30));39 }40}41import static org.assertj.core.api
assertMaintainsEqualsAndHashCodeContract
Using AI Code Generation
1import org.assertj.core.test.EqualsHashCodeContractAssert;2import org.assertj.core.test.EqualsHashCodeContractAssert;3import org.junit.Test;4public class EqualsHashCodeContractTest {5 public void should_maintain_equals_and_hashCode_contract() {6 EqualsHashCodeContractAssert.assertMaintainsEqualsAndHashCodeContract(1, 1);7 }8}9import org.assertj.core.test.EqualsHashCodeContractAssert;10import org.assertj.core.test.EqualsHashCodeContractAssert;11import org.junit.Test;12public class EqualsHashCodeContractTest {13 public void should_maintain_equals_and_hashCode_contract() {14 EqualsHashCodeContractAssert.assertMaintainsEqualsAndHashCodeContract(1, 1);15 }16}17import org.assertj.core.test.EqualsHashCodeContractAssert;18import org.assertj.core.test.EqualsHashCodeContractAssert;19import org.junit.Test;20public class EqualsHashCodeContractTest {21 public void should_maintain_equals_and_hashCode_contract() {22 EqualsHashCodeContractAssert.assertMaintainsEqualsAndHashCodeContract(1, 1);23 }24}25import org.assertj.core.test.EqualsHashCodeContractAssert;26import org.assertj.core.test.EqualsHashCodeContractAssert;27import org.junit.Test;28public class EqualsHashCodeContractTest {29 public void should_maintain_equals_and_hashCode_contract() {30 EqualsHashCodeContractAssert.assertMaintainsEqualsAndHashCodeContract(1, 1);31 }32}
assertMaintainsEqualsAndHashCodeContract
Using AI Code Generation
1import static org.assertj.core.test.EqualsHashCodeContractAssert.assertMaintainsEqualsAndHashCodeContract;2import java.util.*;3import org.junit.Test;4public class TestEqualsHashCodeContract {5 public void testEqualsAndHashCodeContract() {6 assertMaintainsEqualsAndHashCodeContract(1, 1, 2);7 }8}9Output: (on running the above code)
assertMaintainsEqualsAndHashCodeContract
Using AI Code Generation
1import static org.assertj.core.test.EqualsHashCodeContractAssert.assertMaintainsEqualsAndHashCodeContract;2import static org.assertj.core.test.EqualsHashCodeContractAssert.ContractVerifier;3import static org.assertj.core.test.EqualsHashCodeContractAssert.ContractVerifier.nullSafeEquals;4import static org.assertj.core.test.EqualsHashCodeContractAssert.ContractVerifier.nullSafeHashCode;5import static org.assertj.core.test.EqualsHashCodeContractAssert.ContractVerifier.nullSafeNotEquals;6import static org.assertj.core.test.EqualsHashCodeContractAssert.ContractVerifier.nullSafeToString;7import org.assertj.core.test.EqualsHashCodeContractAssert;8import org.junit.Test;9public class EqualsHashCodeContractTest {10 public void should_verify_equals_hashCode_contract() {11 ContractVerifier<ImmutablePoint> verifier = new ContractVerifier<ImmutablePoint>(ImmutablePoint.class) {12 protected ImmutablePoint equalInstance() {13 return new ImmutablePoint(1, 2);14 }15 protected ImmutablePoint notEqualInstance() {16 return new ImmutablePoint(2, 1);17 }18 };19 assertMaintainsEqualsAndHashCodeContract(verifier);20 }21 public void should_verify_equals_hashCode_contract_with_null_safe_methods() {22 ContractVerifier<ImmutablePoint> verifier = new ContractVerifier<ImmutablePoint>(ImmutablePoint.class) {23 protected ImmutablePoint equalInstance() {24 return new ImmutablePoint(1, 2);25 }26 protected ImmutablePoint notEqualInstance() {27 return new ImmutablePoint(2, 1);28 }29 };30 assertMaintainsEqualsAndHashCodeContract(verifier, nullSafeEquals(), nullSafeHashCode(), nullSafeNotEquals(),31 nullSafeToString());32 }33}34import static java.util.Objects.hash;35import static java.util.Objects.requireNonNull;36import java.util.Objects;37public class ImmutablePoint {38 private final int x;39 private final int y;40 public ImmutablePoint(int x, int y) {41 this.x = x;42 this.y = y;43 }44 public int getX() {45 return x;46 }47 public int getY() {48 return y;49 }50 public int hashCode() {51 return hash(x, y);52 }53 public boolean equals(Object obj) {54 if (this == obj) return true;55 if (obj == null ||
assertMaintainsEqualsAndHashCodeContract
Using AI Code Generation
1import org.assertj.core.test.EqualsHashCodeContractAssert;2public class 1 {3 public static void main(String[] args) {4 EqualsHashCodeContractAssert.assertMaintainsEqualsAndHashCodeContract(ClassName.class);5 }6}7org.assertj.core.test.EqualsHashCodeContractAssert.assertMaintainsEqualsAndHashCodeContract(ClassName.class);8 at org.assertj.core.test.EqualsHashCodeContractAssert.assertMaintainsEqualsAndHashCodeContract(EqualsHashCodeContract
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