bugfix Fixed Fail Test Line Drawn Twice and Test Box Complete Now Passes, A...

bugfix Fixed Fail Test Line Drawn Twice and Test Box Complete Now Passes, A few improvements to tests

Closes #1 (closed)

src/main/java/dotsandboxes/DotsAndBoxesGrid.java

@@ -109,11 +109,15 @@ public class DotsAndBoxesGrid {
     public boolean boxComplete(int x, int y) {
         if (x >= width - 1 || x < 0 || y >= height - 1 || y < 0) {
             return false;
+        }else {
+            // 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).
+            if (getHorizontal(x, y) && getVertical(x, y) && getVertical(x + 1, y) && getHorizontal(x, y + 1)) {
+                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).
-        return true;
     }
 
     /** Tries to claim a box for a player. If the box is complete, sets the ownership and returns true. */
@@ -139,8 +143,10 @@ public class DotsAndBoxesGrid {
         if (y >= height || y < 0) {
             throw new IndexOutOfBoundsException(String.format("y was %d, which is out of range. Range is 0 to %d", y, height));
         }
-
         // FIXME: You need to throw an exception if the line was already drawn.
+        if (getHorizontal(x,y)){
+            throw new IllegalArgumentException("Horizontal Line in this location already drawn.");
+        }
 
         this.horizontals[x][y] = true;
 
@@ -172,6 +178,9 @@ public class DotsAndBoxesGrid {
         }
 
         // You need to throw an exception if the line was already drawn.
+        if (getVertical(x,y)){
+            throw new IllegalArgumentException("Horizontal Line in this location already drawn.");
+        }
 
         this.verticals[x][y] = true;
         // Try to claim the north or south boxes