1-Need-to-fix-code-errors

added tag prev commit, added testing drawVertical to unit test

src/main/java/dotsandboxes/DotsAndBoxesGrid.java

@@ -112,8 +112,6 @@ public class DotsAndBoxesGrid {
             return false;
         }
 
-        // x < 0 || x > width
-
         // A box is complete if the north and south horizontals and the east and west
         // verticals have all been drawn.
         // FIXME: You'll need to fix this code (after writing a test first).

src/test/java/dotsandboxes/DotsAndBoxesGridTest.java

@@ -50,7 +50,9 @@ public class DotsAndBoxesGridTest {
     public void drawMethodsDetectRedrawnLines() {
         DotsAndBoxesGrid case2 = new DotsAndBoxesGrid(5, 5, 2);
         case2.drawHorizontal(0, 0, 0);
+        case2.drawVertical(0, 0, 1);
         assertThrows(RuntimeException.class, () -> case2.drawHorizontal(0, 0, 0));
+        assertThrows(RuntimeException.class, () -> case2.drawVertical(0, 0, 0));
     }
 
 }