[BAEL-10840] - Create a libraries-apache-commons module

libraries-apache-commons/src/test/java/com/baeldung/commons/beanutils/CourseServiceUnitTest.java

@@ -0,0 +1,51 @@
+package com.baeldung.commons.beanutils;
+
+import java.lang.reflect.InvocationTargetException;
+import java.util.Arrays;
+import java.util.List;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class CourseServiceUnitTest {
+
+    @Test
+    public void givenCourse_whenSetValuesUsingPropertyUtil_thenReturnSetValues() throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
+        Course course = new Course();
+        String name = "Computer Science";
+        List<String> codes = Arrays.asList("CS", "CS01");
+        CourseService.setValues(course, name, codes);
+
+        Assert.assertEquals(name, course.getName());
+        Assert.assertEquals(2, course.getCodes().size());
+        Assert.assertEquals("CS", course.getCodes().get(0));
+
+        CourseService.setIndexedValue(course, 1, "CS02");
+        Assert.assertEquals("CS02", course.getCodes().get(1));
+
+        Student student = new Student();
+        String studentName = "Joe";
+        student.setName(studentName);
+
+        CourseService.setMappedValue(course, "ST-1", student);
+        Assert.assertEquals(student, course.getEnrolledStudent("ST-1"));
+
+        String accessedStudentName = CourseService.getNestedValue(course, "ST-1", "name");
+        Assert.assertEquals(studentName, accessedStudentName);
+    }
+
+    @Test
+    public void givenCopyProperties_whenCopyCourseToCourseEntity_thenCopyPropertyWithSameName() throws IllegalAccessException, InvocationTargetException, NoSuchMethodException {
+        Course course = new Course();
+        course.setName("Computer Science");
+        course.setCodes(Arrays.asList("CS"));
+        course.setEnrolledStudent("ST-1", new Student());
+
+        CourseEntity courseEntity = new CourseEntity();
+
+        CourseService.copyProperties(course, courseEntity);
+        Assert.assertEquals(course.getName(), courseEntity.getName());
+        Assert.assertEquals(course.getCodes(), courseEntity.getCodes());
+        Assert.assertNull(courseEntity.getStudent("ST-1"));
+    }
+}