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How to use Introspection class of org.assertj.core.util.introspection package

Best Assertj code snippet using org.assertj.core.util.introspection.Introspection

Source:Introspection_getProperty_Test.java

...12 */13package org.assertj.core.util;14import static org.assertj.core.api.Assertions.catchThrowable;15import static org.assertj.core.api.BDDAssertions.then;16import static org.assertj.core.util.introspection.Introspection.getPropertyGetter;17import java.lang.reflect.Method;18import org.assertj.core.util.introspection.IntrospectionError;19import org.junit.jupiter.api.Test;20class Introspection_getProperty_Test {21  private final Employee judy = new Employee(100000.0, 31);22  @Test23  void should_succeed() {24    // WHEN25    Method getter = getPropertyGetter("age", judy);26    // THEN27    then(getter).isNotNull();28  }29  @Test30  void should_raise_an_error_because_of_missing_getter() {31    // WHEN32    Throwable thrown = catchThrowable(() -> getPropertyGetter("salary", judy));33    // THEN34    then(thrown).isInstanceOf(IntrospectionError.class)35                .hasMessage("No getter for property 'salary' in org.assertj.core.util.Employee");36  }37  @Test38  void should_raise_an_error_because_of_non_public_getter_when_getter_does_not_exists() {39    // WHEN40    Throwable thrown = catchThrowable(() -> getPropertyGetter("company", judy));41    // THEN42    then(thrown).isInstanceOf(IntrospectionError.class)43                .hasMessage("No public getter for property 'company' in org.assertj.core.util.Employee");44  }45  @Test46  void should_raise_an_error_because_of_non_public_getter_when_getter_is_package_private() {47    // WHEN48    Throwable thrown = catchThrowable(() -> getPropertyGetter("firstJob", judy));49    // THEN50    then(thrown).isInstanceOf(IntrospectionError.class)51                .hasMessage("No public getter for property 'firstJob' in org.assertj.core.util.Employee");52  }53  @Test54  void should_raise_an_error_because_of_non_public_getter_when_getter_is_in_superclass() {55    // WHEN56    Throwable thrown = catchThrowable(() -> getPropertyGetter("name", new Example()));57    // THEN58    then(thrown).isInstanceOf(IntrospectionError.class)59                .hasMessage("No public getter for property 'name' in org.assertj.core.util.Introspection_getProperty_Test$Example");60  }61  @Test62  void should_raise_an_error_because_of_getter_with_void_return_type() {63    // WHEN64    Throwable thrown = catchThrowable(() -> getPropertyGetter("surname", new VoidGetter()));65    // THEN66    then(thrown).isInstanceOf(IntrospectionError.class)67                .hasMessage("No getter for property 'surname' in org.assertj.core.util.Introspection_getProperty_Test$VoidGetter");68  }69  static class Example extends Super {70  }71  static class Super {72    @SuppressWarnings("unused")73    private String getName() {74      return "a";75    }76  }77  static class VoidGetter {78    public void getSurname() {}79  }80}...

Introspection

Using AI Code Generation

1    assertThat(Introspection.getPropertyOrFieldValue("value", new Person("John"))).isEqualTo("John");2  }3}4org.assertj.core.util.introspection.IntrospectionTest > should_get_property_value() PASSED5org.assertj.core.util.introspection.IntrospectionTest > should_get_property_value() FAILED6org.assertj.core.util.introspection.IntrospectionTest > should_get_property_value() FAILED7org.assertj.core.util.introspection.IntrospectionTest > should_get_property_value() FAILED8org.assertj.core.util.introspection.IntrospectionTest > should_get_property_value() FAILED9org.assertj.core.util.introspection.IntrospectionTest > should_get_property_value() FAILED10org.assertj.core.util.introspection.IntrospectionTest > should_get_property_value() FAILED11org.assertj.core.util.introspection.IntrospectionTest > should_get_property_value() FAILED12org.assertj.core.util.introspection.IntrospectionTest > should_get_property_value() FAILED13org.assertj.core.util.introspection.IntrospectionTest > should_get_property_value() FAILED14org.assertj.core.util.introspection.IntrospectionTest > should_get_property_value() FAILED15org.assertj.core.util.introspection.IntrospectionTest > should_get_property_value() FAILED16org.assertj.core.util.introspection.IntrospectionTest > should_get_property_value() FAILED17org.assertj.core.util.introspection.IntrospectionTest > should_get_property_value() FAILED18org.assertj.core.util.introspection.IntrospectionTest > should_get_property_value() FAILED19org.assertj.core.util.introspection.IntrospectionTest > should_get_property_value() FAILED20org.assertj.core.util.introspection.IntrospectionTest > should_get_property_value() FAILED21org.assertj.core.util.introspection.IntrospectionTest > should_get_property_value() FAILED22org.assertj.core.util.introspection.IntrospectionTest > should_get_property_value() FAILED23org.assertj.core.util.introspection.IntrospectionTest > should_get_property_value() FAILED24org.assertj.core.util.introspection.IntrospectionTest > should_get_property_value() FAILED25org.assertj.core.util.introspection.IntrospectionTest > should_get_property_value() PASSED

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