Add unit test for sorting projects by priority then name

Introduced a new unit test class `SortingTest` which includes a setup method for initializing a list of projects. Added a test method to verify sorting projects first by priority and then by name.

src/test/java/sorting/SortingTest.java

@@ -0,0 +1,41 @@
+package sorting;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.util.Comparator;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class SortingTest {
+
+    // "Getter" methods on a record match
+    // the property name, as in name(), priority()
+    record Project(String name, int priority) {}
+
+    private List<Project> projects;
+
+    @BeforeEach
+    void setUp() {
+        // create a list of projects
+        projects = List.of(
+                new Project("Build a house", 1),
+                new Project("Build a shed", 2),
+                new Project("Build a garage", 3),
+                new Project("Build a barn", 2),
+                new Project("Build a fence", 1),
+                new Project("Build a wall", 3)
+        );
+    }
+
+    // sort by priority, then by name
+    @Test
+    public void sortByPriorityThenName() {
+        List<Project> sorted = projects.stream()
+                .sorted(Comparator.comparingInt(Project::priority)
+                        .thenComparing(Project::name))
+                .collect(Collectors.toList());
+        System.out.println(sorted);
+        System.out.println(projects);
+    }
+}