+ Created UnitTest for class Game

test/GameTest.java

@@ -1,9 +1,36 @@
 import static org.junit.jupiter.api.Assertions.*;
 
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.jupiter.api.Test;
+
+import java.io.ByteArrayOutputStream;
+import java.io.PrintStream;
+
+
 class GameTest {
 
-    @org.junit.jupiter.api.Test
+    private final ByteArrayOutputStream outContent = new ByteArrayOutputStream();
-    void checkTest() {
+    private final ByteArrayOutputStream errContent = new ByteArrayOutputStream();
+    private final PrintStream originalOut = System.out;
+    private final PrintStream originalErr = System.err;
+    
+    @Before
+    public void setUpStreams() {
+        System.setOut(new PrintStream(outContent));
+        System.setErr(new PrintStream(errContent));
+    }
 
+    @After
+    public void restoreStreams() {
+        System.setOut(originalOut);
+        System.setErr(originalErr);
+    }
+
+    @Test
+    void checkTest() {
+        System.out.println("hello");
+        assertEquals("hello", outContent.toString());
     }
 }