Fixed my missing throw message

src/test/java/dotsandboxes/DotsAndBoxesGridTest.java

@@ -21,6 +21,7 @@ public class DotsAndBoxesGridTest {
      *
      * This is a dummy test just to show that the test suite itself runs
      */
+
     @Test
     public void testTestSuiteRuns() {
         logger.info("Dummy test to show the test suite runs");
@@ -54,7 +55,7 @@ public class DotsAndBoxesGridTest {
     @Test
     public void testDrawLine() {
 
-        logger.info("Dummy test to show the Exception test runs");
+        logger.info("This test makes sure theres no existing lines");
 
         // set up the test box
         DotsAndBoxesGrid grid = new DotsAndBoxesGrid(10,10,2);
@@ -64,7 +65,8 @@ public class DotsAndBoxesGridTest {
         grid.drawVertical(0,0,1);
 
         // redraw lines to throw the exceptions
-        assertThrows(IllegalStateException.class, () -> grid.drawHorizontal(0,0,1));
-        assertThrows(IllegalStateException.class, () -> grid.drawVertical(0,0,1));
+        assertThrows(IllegalStateException.class, () -> grid.drawHorizontal(0,0,1), "A horizontal line already exists");
+        assertThrows(IllegalStateException.class, () -> grid.drawVertical(0,0,1), "A vertical line already exists");
     }
 }
+    //IllegalStateException exception =
\ No newline at end of file