fix sum

Author: andre15silva

src/main/java/com/testrepo/AppMath.java

@@ -5,6 +5,6 @@ public AppMath() {
     }
 
     public int sum(int a, int b) {
-        return a - b;
+        return a + b;
     }
 }

src/test/java/com/testrepo/AppTest.java

@@ -22,7 +22,6 @@ public static Test suite()
 
     public void testAppMath()
     {
-        assertTrue(true);
-        //assertEquals(new AppMath().sum(1, 2), 3);
+        assertEquals(new AppMath().sum(1, 2), 3);
     }
 }