How to use registerComparatorForType method of org.assertj.core.api.RecursiveComparisonAssert class

Best Assertj code snippet using org.assertj.core.api.RecursiveComparisonAssert.registerComparatorForType

Source:RecursiveComparisonConfiguration.java

...328   * @param comparator the {@link java.util.Comparator Comparator} to use to compare the given type329   * @param type the type to be compared with the given comparator.330   * @throws NullPointerException if the given comparator is null.331   */332  public <T> void registerComparatorForType(Comparator<? super T> comparator, Class<T> type) {333    requireNonNull(comparator, "Expecting a non null Comparator");334    typeComparators.put(type, comparator);335  }336  /**337   * Registers the given {@link BiPredicate} to compare the fields with the given type.338   * <p>339   * BiPredicates specified with this method have less precedence than the ones registered with {@link #registerEqualsForFields(BiPredicate, String...)}340   * or comparators registered with {@link #registerComparatorForFields(Comparator, String...)}.341   * <p>342   * Note that registering a {@link BiPredicate} for a given type will override the previously registered BiPredicate/Comparator (if any).343   * <p>344   * See {@link RecursiveComparisonAssert#withEqualsForType(BiPredicate, Class)} for examples.345   *346   * @param <T> the class type to register a comparator for347   * @param equals the equals implementation to compare the given type348   * @param type the type to be compared with the given equals implementation .349   * @throws NullPointerException if the given BiPredicate is null.350   * @since 3.17.0351   */352  @SuppressWarnings("unchecked")353  public <T> void registerEqualsForType(BiPredicate<? super T, ? super T> equals, Class<T> type) {354    registerComparatorForType(toComparator(equals), type);355  }356  /**357   * Registers the given {@link Comparator} to compare the fields at the given locations.358   * <p>359   * The fields must be specified from the root object, for example if {@code Foo} has a {@code Bar} field and both have an {@code id} field,360   * one can register a comparator for Foo and Bar's {@code id} by calling:361   * <pre><code class='java'> registerComparatorForFields(idComparator, "foo.id", "foo.bar.id")</code></pre>362   * <p>363   * Comparators registered with this method have precedence over comparators registered with {@link #registerComparatorForType(Comparator, Class)}.364   * <p>365   * Note that registering a {@link Comparator} for a given field will override the previously registered BiPredicate/Comparator (if any).366   * <p>367   * See {@link RecursiveComparisonAssert#withComparatorForFields(Comparator, String...) RecursiveComparisonAssert#withComparatorForFields(Comparator, String...)} for examples.368   *369   * @param comparator the {@link java.util.Comparator Comparator} to use to compare the given field370   * @param fieldLocations the locations from the root object of the fields the comparator should be used for371   * @throws NullPointerException if the given comparator is null.372   */373  public void registerComparatorForFields(Comparator<?> comparator, String... fieldLocations) {374    requireNonNull(comparator, "Expecting a non null Comparator");375    Stream.of(fieldLocations).forEach(fieldLocation -> fieldComparators.registerComparator(fieldLocation, comparator));376  }377  /**378   * Registers the given {@link BiPredicate} to compare the fields at the given locations.379   * <p>380   * The fields must be specified from the root object, for example if {@code Foo} has a {@code Bar} field and both have an {@code id} field,381   * one can register a BiPredicate for Foo and Bar's {@code id} by calling:382   * <pre><code class='java'> registerEqualsForFields(idBiPredicate, "foo.id", "foo.bar.id")</code></pre>383   * <p>384   * BiPredicates registered with this method have precedence over the ones registered with {@link #registerEqualsForType(BiPredicate, Class)}385   * or the comparators registered with {@link #registerComparatorForType(Comparator, Class)}.386   * <p>387   * Note that registering a {@link BiPredicate} for a given field will override the previously registered BiPredicate/Comparator (if any).388   * <p>389   * See {@link RecursiveComparisonAssert#withEqualsForFields(BiPredicate, String...) RecursiveComparisonAssert#withEqualsForFields(BiPredicate, String...)} for examples.390   *391   * @param equals the equals implementation to compare the given fields.392   * @param fieldLocations the locations from the root object of the fields the comparator should be used for393   * @throws NullPointerException if the given BiPredicate is null.394   * @since 3.17.0395   */396  public void registerEqualsForFields(BiPredicate<?, ?> equals, String... fieldLocations) {397    registerComparatorForFields(toComparator(equals), fieldLocations);398  }399  /**...

registerComparatorForType

Using AI Code Generation

1public class RecursiveComparisonAssert_registerComparatorForType_Test {2  public void should_register_a_comparator_for_a_type() {3    Comparator<Foo> fooComparator = new Comparator<Foo>() {4      public int compare(Foo o1, Foo o2) {5        return o1.bar.compareTo(o2.bar);6      }7    };8    assertThat(new Foo("bar")).usingComparatorForType(fooComparator, Foo.class)9                              .usingRecursiveComparison()10                              .isEqualTo(new Foo("bar"));11  }12  public void should_register_a_comparator_for_a_type_using_a_lambda() {13    Comparator<Foo> fooComparator = (o1, o2) -> o1.bar.compareTo(o2.bar);14    assertThat(new Foo("bar")).usingComparatorForType(fooComparator, Foo.class)15                              .usingRecursiveComparison()16                              .isEqualTo(new Foo("bar"));17  }18  public void should_register_a_comparator_for_a_type_using_a_method_reference() {19    Comparator<Foo> fooComparator = Comparator.comparing(foo -> foo.bar);20    assertThat(new Foo("bar")).usingComparatorForType(fooComparator, Foo.class)21                              .usingRecursiveComparison()22                              .isEqualTo(new Foo("bar"));23  }24  public void should_register_a_comparator_for_an_interface_using_a_method_reference() {25    Comparator<Bar> barComparator = Comparator.comparing(bar -> bar.bar);26    assertThat(new BarImpl("bar")).usingComparatorForType(barComparator, Bar.class)27                                  .usingRecursiveComparison()28                                  .isEqualTo(new BarImpl("bar"));29  }30  public void should_register_a_comparator_for_a_type_using_a_lambda_and_a_type_parameter() {31    Comparator<Foo> fooComparator = (o1, o2) -> o1.bar.compareTo(o2.bar);32    assertThat(new Foo("bar")).usingComparatorForType(fooComparator, new TypeRef<Foo>() {})33                              .usingRecursiveComparison()34                              .isEqualTo(new Foo("bar"));35  }

registerComparatorForType

Using AI Code Generation

1import org.assertj.core.api.RecursiveComparisonAssert;2public class RecursiveComparisonAssertDemo {3    public static void main(String[] args) {4        RecursiveComparisonAssert.registerComparatorForType(new Person.PersonComparator(), Person.class);5        Person person1 = new Person("John", "Smith", 20);6        Person person2 = new Person("John", "Smith", 20);7        Person person3 = new Person("John", "Smith", 30);

registerComparatorForType

Using AI Code Generation

1import org.assertj.core.api.RecursiveComparisonAssert;2import org.assertj.core.api.RecursiveComparisonConfiguration;3import org.assertj.core.util.introspection.IntrospectionError;4import java.util.List;5public class RecursiveComparisonAssertDemo {6    public static void main(String[] args) {7        List<String> list1 = List.of("one", "two", "three");8        List<String> list2 = List.of("one", "two", "three");9        RecursiveComparisonConfiguration recursiveComparisonConfiguration = new RecursiveComparisonConfiguration();10        recursiveComparisonConfiguration.registerComparatorForType((o1, o2) -> true, List.class);11        try {12            RecursiveComparisonAssert.assertThat(list1)13                    .usingRecursiveComparison(recursiveComparisonConfiguration)14                    .isEqualTo(list2);15        } catch (IntrospectionError e) {16            System.out.println(e.getMessage());17        }18    }19}20RecursiveComparisonAssertDemo.java:29: error: unreported exception IntrospectionError; must be caught or declared to be thrown21            RecursiveComparisonAssert.assertThat(list1)22import org.assertj.core.api.RecursiveComparisonAssert;23import org.assertj.core.api.RecursiveComparisonConfiguration;24import org.assertj.core.util.introspection.IntrospectionError;25import java.util.List;26public class RecursiveComparisonAssertDemo {27    public static void main(String[] args) {28        List<String> list1 = List.of("one", "two", "three");29        List<String> list2 = List.of("one", "two", "three");30        RecursiveComparisonConfiguration recursiveComparisonConfiguration = new RecursiveComparisonConfiguration();31        recursiveComparisonConfiguration.registerComparatorForType((o1, o2) -> true, List.class);32        try {33            RecursiveComparisonAssert.assertThat(list1)34                    .usingRecursiveComparison(recursiveComparisonConfiguration)35                    .isEqualTo(list2);36        } catch (IntrospectionError e) {37            System.out.println(e.getMessage());38        }39    }40}

registerComparatorForType

Using AI Code Generation

1import org.assertj.core.api.RecursiveComparisonAssert2import org.assertj.core.api.Assertions.assertThat3import org.assertj.core.api.RecursiveComparisonConfiguration4import org.assertj.core.data.Offset5class Person {6}7class PersonAssert extends RecursiveComparisonAssert {8PersonAssert(Person actual) {9super(actual)10}11}12def expected = new Person(name: 'John', age: 30)13def actual = new Person(name: 'John', age: 30)14def recursiveComparisonConfiguration = new RecursiveComparisonConfiguration()15recursiveComparisonConfiguration.registerComparatorForType(Offset.offset(0.1f), Float.class)16assertThat(actual).usingRecursiveComparison(recursiveComparisonConfiguration).isEqualTo(expected)

registerComparatorForType

Using AI Code Generation

1import org.junit.Test;2import static org.assertj.core.api.Assertions.assertThat;3public class PersonTest {4    public void whenUsingRecursiveComparisonAssert_thenCorrect() {5        Person actual = new Person("John", "Smith", 30);6        Person expected = new Person("John", "Doe", 30);7        assertThat(actual)8                .usingRecursiveComparison()9                .ignoringFields("lastName")10                .isEqualTo(expected);11    }12}13Expected :Person(firstName=John, lastName=Doe, age=30)14Actual   :Person(firstName=John, lastName=Smith, age=30)15If we want to ignore multiple fields, we can use the ignoringFields() method as follows:16assertThat(actual)17    .usingRecursiveComparison()18    .ignoringFields("lastName", "age")19    .isEqualTo(expected);20assertThat(actual)21    .usingRecursiveComparison()22    .ignoringAllOverriddenEquals()23    .isEqualTo(expected);24assertThat(actual)25    .usingRecursiveComparison()26    .ignoringFields("lastName")27    .ignoringAllOverriddenEquals()28    .isEqualTo(expected);29assertThat(actual)30    .usingRecursiveComparison()31    .ignoringAllDeclaredFieldsOfTypes(int.class)32    .isEqualTo(expected);33assertThat(actual)34    .usingRecursiveComparison()35    .ignoringFields("lastName")36    .ignoringAllDeclaredFieldsOfTypes(int.class)37    .isEqualTo(expected);38Note that the ignoringFields() method takes precedence over the ignoringAllDeclared

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