tests now work and bugs corrected

src/main/java/dotsandboxes/DotsAndBoxesGrid.java

@@ -19,7 +19,7 @@ import java.util.function.Consumer;
  *
  * Notice that:
  *
- * - for each row, there is one less horizontal than the number of corner dots
+ * - for each row, there is one less horizontal than the numbgraer of corner dots
  * - for each row, there are as many verticals as there are corner dots
  * - for each row, there is one less box than the number of corner dots
  * - for each column, there is one less vertical than the number of corner dots.
@@ -111,10 +111,19 @@ public class DotsAndBoxesGrid {
             return false;
         }
 
-        // 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).
+        else if((getHorizontal(x, y)) && (getHorizontal(x, y+1)) && (getVertical(x, y))
+                && (getVertical(x + 1, y)))
+        {
             return true;
         }
+        else
+        {
+            return false;
+        }
+
+        // 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)
+    }
 
     /** Tries to claim a box for a player. If the box is complete, sets the ownership and returns true. */
     private boolean claimBox(int x, int y, int p) {
@@ -142,6 +151,11 @@ public class DotsAndBoxesGrid {
 
         // FIXME: You need to throw an exception if the line was already drawn.
 
+        if(getHorizontal(x, y))
+        {
+           throw new IndexOutOfBoundsException("That connection has already been drawn");
+        }
+
         this.horizontals[x][y] = true;
 
         // Try to claim the north or south boxes
@@ -173,6 +187,12 @@ public class DotsAndBoxesGrid {
 
         // You need to throw an exception if the line was already drawn.
 
+        if(getVertical(x, y))
+        {
+            throw new IndexOutOfBoundsException("That connection has already been drawn");
+        }
+
+
         this.verticals[x][y] = true;
         // Try to claim the north or south boxes
         boolean claimE = claimBox(x, y, player);

src/test/java/dotsandboxes/DotsAndBoxesGridTest.java

@@ -45,7 +45,8 @@ public class DotsAndBoxesGridTest {
         grid.drawVertical(0,0,1);
         grid.drawVertical(1,0,1);
 
-        assertFalse(grid.drawHorizontal(0, 0, 1));
+        assertThrows(IndexOutOfBoundsException.class, () -> {  grid.drawHorizontal(0, 0, 1);} );
+        //assertFalse(grid.drawHorizontal(0, 0, 1));
 
     }
 
@@ -54,6 +55,12 @@ public class DotsAndBoxesGridTest {
     public void testBoxComplete()
     {
         // will need to draw a box, then give it to box complete and assert that it should be true
+
+        grid.drawHorizontal(0, 0, 1);
+        grid.drawHorizontal(0,1, 1);
+        grid.drawVertical(0,0,1);
+        grid.drawVertical(1,0,1);
+
         logger.info("Testing box completion");
         assertTrue(grid.boxComplete(0,0));
         assertFalse(grid.boxComplete(2,2));