Added tests to check if horizontal and vertical lines are appropriately drawn....

Added tests to check if horizontal and vertical lines are appropriately drawn. Also added test to check if boxComplete correctly checks if a box is complete

src/test/java/dotsandboxes/DotsAndBoxesGridTest.java

@@ -26,6 +26,68 @@ public class DotsAndBoxesGridTest {
         logger.info("Dummy test to show the test suite runs");
         assertTrue(true);
     }
+    
+    @Test
+    public void testBoxCompleteFalse() {
+        //Creating a box that should be incorrect and checking if it returns false
+        DotsAndBoxesGrid boxCompleteFalse = new DotsAndBoxesGrid(5, 5, 2);
+        boxCompleteFalse.drawHorizontal(0, 0, 0);
+        boxCompleteFalse.drawVertical(0, 0, 1);
+        boxCompleteFalse.drawHorizontal(0, 1, 0);
+        boxCompleteFalse.drawVertical(1, 1, 1);
+
+        assertFalse(boxCompleteFalse.boxComplete(0, 0));
+    }
+
+    @Test
+    public void testBoxCompleteTrue() {
+        //Creating a box that should be correct and checking if it returns true
+        DotsAndBoxesGrid boxCompleteTrue = new DotsAndBoxesGrid(5, 5, 2);
+        boxCompleteTrue.drawHorizontal(0, 0, 0);
+        boxCompleteTrue.drawVertical(0, 0, 1);
+        boxCompleteTrue.drawHorizontal(0, 1, 0);
+        boxCompleteTrue.drawVertical(1, 0, 1);
+
+        assertTrue(boxCompleteTrue.boxComplete(0, 0));
+    }
+
+    @Test
+    public void testDrawHorizontalDrawn() {
+        //Draws a horizontal line, then draws another horizontal line in the same
+        //place to check if an exception is appropriately thrown
+        DotsAndBoxesGrid horizontalDrawn = new DotsAndBoxesGrid(5, 5, 1);
+        horizontalDrawn.drawHorizontal(0, 0, 1);
+        assertThrows(RuntimeException.class, () -> {
+            horizontalDrawn.drawHorizontal(0, 0, 1);
+        });
+    }
 
-    // FIXME: You need to write tests for the two known bugs in the code.
+    @Test
+    public void testDrawHorizontalNotDrawn() {
+        //Draws a horizontal line to check if no exception is thrown
+        DotsAndBoxesGrid horizontalNotDrawn = new DotsAndBoxesGrid(5, 5, 1);
+        assertDoesNotThrow(() -> {
+            horizontalNotDrawn.drawHorizontal(0, 0, 1);
+        });
+    }
+
+    @Test
+    public void testDrawVerticalDrawn() {
+        //Draws a vertical line, then draws another vertical line in the same
+        //place to check if an exception is appropriately thrown
+        DotsAndBoxesGrid verticalDrawn = new DotsAndBoxesGrid(5, 5, 1);
+        verticalDrawn.drawVertical(0, 0, 1);
+        assertThrows(RuntimeException.class, () -> {
+            verticalDrawn.drawVertical(0, 0, 1);
+        });
+    }
+
+    @Test
+    public void testDrawVerticalNotDrawn() {
+        //Draws a vertical line to check if no exception is thrown
+        DotsAndBoxesGrid verticalNotDrawn = new DotsAndBoxesGrid(5, 5, 1);
+        assertDoesNotThrow(() -> {
+            verticalNotDrawn.drawVertical(0, 0, 1);
+        });    
+    }
 }