这是indexloc提供的服务，不要输入任何密码
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BAEL-9416 Get Property Value by Property Name in Java #18750

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merged 4 commits into from
Aug 18, 2025
Merged

BAEL-9416 Get Property Value by Property Name in Java #18750

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f03af5a
Update CourseServiceUnitTest.java
dvohra09 Aug 15, 2025
90c5d56
Update CourseServiceUnitTest.java
dvohra09 Aug 15, 2025
c3a10bb
Update CourseServiceUnitTest.java
dvohra09 Aug 15, 2025
7e8fe9e
Update CourseServiceUnitTest.java
dvohra09 Aug 15, 2025
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54 changes: 51 additions & 3 deletions ...es-apache-commons/src/test/java/com/baeldung/commons/beanutils/CourseServiceUnitTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -2,16 +2,64 @@

import static org.assertj.core.api.Assertions.assertThat;
import static org.junit.jupiter.api.Assertions.assertEquals;

import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertNull;
import org.junit.jupiter.api.BeforeEach;
import org.apache.commons.beanutils.PropertyUtils;
import java.lang.reflect.InvocationTargetException;
import java.util.Arrays;
import java.util.List;

import org.junit.Assert;
import org.junit.Test;

public class CourseServiceUnitTest {

private static final String STUDENT_ID = "01";

@Test
public void givenCourse_whenGettingSimplePropertyValueUsingPropertyUtil_thenValueReturned() throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
Course course = new Course();
String name = "Computer Science";
List<String> codes = Arrays.asList("CS101","CS102");
CourseService.setValues(course, name, codes);

// Use getSimpleProperty to retrieve the 'name' property from the course bean
String courseName = (String) PropertyUtils.getSimpleProperty(course, "name");

assertEquals("Computer Science", courseName);
}

@Test
public void givenCourse_whenGettingIndexedPropertyValueUsingPropertyUtil_thenValueReturned() throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
Course course = new Course();
String name = "Computer Science";
List<String> codes = Arrays.asList("CS101","CS102");
CourseService.setValues(course, name, codes);
// Use getIndexedProperty to retrieve the element at index 1 from the 'codes' list
String secondCode = (String) PropertyUtils.getIndexedProperty(course, "codes[1]");

assertEquals("CS102", secondCode);
}

@Test
public void givenCourse_whenGettingMappedPropertyValueUsingPropertyUtil_thenValueReturned() throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
Course course = new Course();
String name = "Computer Science";
List<String> codes = Arrays.asList("CS101","CS102");
CourseService.setValues(course, name, codes);

// 1. Create and set a Student
Student student = new Student();
student.setName("John Doe");
CourseService.setMappedValue(course, STUDENT_ID, student);
// Use getMappedProperty to retrieve the value associated with the key '01'
// from the 'enrolledStudent' map
Student enrolledStudent = (Student) PropertyUtils.getMappedProperty(course, "enrolledStudent(" + STUDENT_ID + ")");

assertEquals("John Doe", enrolledStudent.getName());
}

@Test
public void givenCourse_whenSetValuesUsingPropertyUtil_thenReturnSetValues() throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
Course course = new Course();
Expand Down Expand Up @@ -48,7 +96,7 @@ public void givenCopyProperties_whenCopyCourseToCourseEntity_thenCopyPropertyWit

CourseService.copyProperties(course, courseEntity);
Assert.assertNotNull(course.getName());
Assert.assertNotNull(courseEntity.getName());
Assert.assertNotNull(courseEntity.getName());
Assert.assertEquals(course.getName(), courseEntity.getName());
Assert.assertEquals(course.getCodes(), courseEntity.getCodes());
Assert.assertNull(courseEntity.getStudent("ST-1"));
Expand Down