src/main/java/Player.java

@@ -1,3 +1,11 @@
 public class Player {
+    private final String name;
 
+    public Player(String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
 }

src/test/java/PlayerTest.java

@@ -4,9 +4,9 @@ import static org.junit.jupiter.api.Assertions.*;
 
 class PlayerTest {
     @Test
-    public void instantiates() {
-        var p = new Player();
-        assertNotNull(p);
+    public void instantiatesName() {
+        var p = new Player("abcd");
+        assertEquals("abcd", p.getName());
     }
 
 }