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

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

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

1import static org.assertj.core.api.Assertions.assertThat;2import java.util.ArrayList;3import java.util.List;4import org.assertj.core.util.introspection.Introspection;5import org.junit.jupiter.api.Test;6public class IntrospectionTest {7	public void testIntrospection() {8		List<String> list = new ArrayList<>();9		list.add("first");10		list.add("second");11		list.add("third");12		assertThat(Introspection.getPropertyOrField(list, "size")).isEqualTo(3);13		assertThat(Introspection.getPropertyOrField(list, "0")).isEqualTo("first");14	}15}

Introspection

Using AI Code Generation

1import org.assertj.core.util.introspection.Introspection;2import org.junit.Test;3public class IntrospectionTest {4    public void testIntrospection() {5        String name = Introspection.getPropertyOrField("name", new Person("John", 20)).toString();6        System.out.println(name);7    }8    private static class Person {9        private String name;10        private int age;11        public Person(String name, int age) {12            this.name = name;13            this.age = age;14        }15        public String getName() {16            return name;17        }18        public int getAge() {19            return age;20        }21    }22}

Introspection

Using AI Code Generation

1Introspection.getPropertyOrFieldNames(ReflectionUtil.class);2Introspection.getPropertyOrFieldNames(ReflectionUtil.class);3Introspection.getPropertyOrFieldNames(ReflectionUtil.class);4Introspection.getPropertyOrFieldNames(ReflectionUtil.class);5Introspection.getPropertyOrFieldNames(ReflectionUtil.class);6Introspection.getPropertyOrFieldNames(ReflectionUtil.class);7Introspection.getPropertyOrFieldNames(ReflectionUtil.class);8Introspection.getPropertyOrFieldNames(ReflectionUtil.class);9Introspection.getPropertyOrFieldNames(ReflectionUtil.class);10Introspection.getPropertyOrFieldNames(ReflectionUtil.class);11Introspection.getPropertyOrFieldNames(ReflectionUtil.class);12Introspection.getPropertyOrFieldNames(ReflectionUtil.class);13Introspection.getPropertyOrFieldNames(ReflectionUtil.class);14Introspection.getPropertyOrFieldNames(ReflectionUtil.class);15Introspection.getPropertyOrFieldNames(ReflectionUtil.class);

Introspection

Using AI Code Generation

1assertThat(1).isEqualTo(1);2assertThat(1).isEqualTo(2);3assertThat(1).isEqualTo(3);4assertThat(1).isEqualTo(4);5assertThat(1).isEqualTo(5);6assertThat(1).isEqualTo(6);7assertThat(1).isEqualTo(7);8assertThat(1).isEqualTo(8);9assertThat(1).isEqualTo(9);10assertThat(1).isEqualTo(10);11assertThat(1).isEqualTo(11);12assertThat(1).isEqualTo(12);13assertThat(1).isEqualTo(13);14assertThat(1).isEqualTo(14);15assertThat(1).isEqualTo(15);16assertThat(1).isEqualTo(16);17assertThat(1).isEqualTo(17);18assertThat(1).isEqualTo(18);19assertThat(1).isEqualTo(19);20assertThat(1).isEqualTo(20);21assertThat(1).isEqualTo(21);22assertThat(1).isEqualTo(22);23assertThat(1).isEqualTo(23);24assertThat(1).isEqualTo(24);25assertThat(1).isEqualTo(25);26assertThat(1).isEqualTo(26);27assertThat(1).isEqualTo(27);28assertThat(1).isEqualTo(28);29assertThat(1).isEqualTo(29);30assertThat(1).isEqualTo(30);31assertThat(1).isEqualTo(31);32assertThat(1).isEqualTo(32);33assertThat(1).isEqualTo(33);34assertThat(1).isEqualTo(34);35assertThat(1).isEqualTo(35);36assertThat(1).isEqualTo(36);37assertThat(1).isEqualTo(37);38assertThat(1).isEqualTo(38);39assertThat(1).isEqualTo(39);40assertThat(1).isEqualTo(40);41assertThat(1).isEqualTo(41);42assertThat(1).isEqualTo(42);43assertThat(1).isEqualTo(43);44assertThat(1).isEqualTo(44);45assertThat(1).isEqualTo(45);46assertThat(1).isEqualTo(46);47assertThat(1).isEqualTo(47);48assertThat(1).isEqualTo(48);49assertThat(1).isEqualTo(49);50assertThat(1).isEqualTo(50);51assertThat(1).isEqualTo(51);52assertThat(1).isEqualTo(52);53assertThat(1).isEqualTo(53);54assertThat(1).isEqualTo(54);55assertThat(

Introspection

Using AI Code Generation

1import org.assertj.core.util.introspection.Introspection2import org.assertj.core.util.introspection.IntrospectionError3try {4  def value = Introspection.getPropertyValue(field, new Person('John Doe'))5} catch (IntrospectionError e) {6}7import org.assertj.core.util.introspection.Introspection8import org.assertj.core.util.introspection.IntrospectionError9try {10  Introspection.setPropertyValue(field, new Person('John Doe'), 'Jane Doe')11} catch (IntrospectionError e) {12}13import org.assertj.core.util.introspection.Introspection14import org.assertj.core.util.introspection.IntrospectionError15try {16  def value = Introspection.getPropertyValue(field, new Person('John Doe'))17} catch (IntrospectionError e) {18}19import org.assertj.core.util.introspection.Introspection20import org.assertj.core.util.introspection.IntrospectionError21try {22  Introspection.setPropertyValue(field, new Person('John Doe'), 'Jane Doe')23} catch (IntrospectionError e) {24}25import org.assertj.core.util.introspection.Introspection26import org.assertj.core.util.introspection.IntrospectionError27try {28  def value = Introspection.getPropertyValue(field, new Person('John Doe'))29} catch (IntrospectionError e) {30}

Introspection

Using AI Code Generation

1Person person = new Person("John", "Doe");2String name = Introspection.getPropertyValue(person, "name", String.class);3assertThat(name).isEqualTo("John");4Person person = new Person("John", "Doe");5String name = Introspection.getPropertyValue(person, "name", String.class);6assertThat(name).isEqualTo("John");7Person person = new Person("John", "Doe");8String name = Introspection.getPropertyValue(person, "name", String.class);9assertThat(name).isEqualTo("John");10Person person = new Person("John", "Doe");11String name = Introspection.getPropertyValue(person, "name", String.class);12assertThat(name).isEqualTo("John");13Person person = new Person("John", "Doe");14String name = Introspection.getPropertyValue(person, "name", String.class);15assertThat(name).isEqualTo("John");16Person person = new Person("John", "Doe");17String name = Introspection.getPropertyValue(person, "name", String.class);18assertThat(name).isEqualTo("John");

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.