Make test public

src/test/java/app/MainTest.java

@@ -5,11 +5,11 @@ import static org.junit.jupiter.api.Assertions.assertEquals;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.DisplayName;
 
-class MainTest {
+public class MainTest {
 
   @Test
   @DisplayName("Temp Test")
-  void tempTest() {
+  public void tempTest() {
     assertEquals(1, 1);
   }