Added unit tests for boxComplete() algorithm and to check that a horizontal...

Added unit tests for boxComplete() algorithm and to check that a horizontal line is not drawn over a another horizontal line

src/test/java/dotsandboxes/DotsAndBoxesGridTest.java

@@ -14,6 +14,15 @@ public class DotsAndBoxesGridTest {
      */
     private static final Logger logger = LogManager.getLogger(DotsAndBoxesGridTest.class);
 
+    /*
+     * Added an annotated @BeforeAll function
+     */
+    @BeforeAll
+    public static void beforeAll() {
+        logger.info("This message was printed out before any of the tests were run");
+    }
+
+
     /*
      * Tests are functions that have an @Test annotation before them.
      * The typical format of a test is that it contains some code that does something, and then one
@@ -27,5 +36,39 @@ public class DotsAndBoxesGridTest {
         assertTrue(true);
     }
 
-    // FIXME: You need to write tests for the two known bugs in the code.
+
+    /*
+     * textBoxComplete():
+     * Purpose: Test used for testing whether the algorithm used for boxComplete() is wrong.
+     */
+    @Test
+    public void testBoxComplete() {
+        logger.info("Testing whether a box is complete");
+
+        DotsAndBoxesGrid grid = new DotsAndBoxesGrid(2, 2, 1);
+        if (grid.drawHorizontal(0, 0, 0) &&
+                grid.drawHorizontal(1, 0, 0) &&
+                grid.drawVertical(0, 0, 0) &&
+                grid.drawVertical(0, 1, 0)) {
+            assertTrue(grid.boxComplete(0, 0));
+        } else {
+            assertFalse(grid.boxComplete(0, 0));
+        }
+    }
+
+
+    /*
+     * testIsSameHorizontalLine()
+     * Purpose: Test used to throw an IllegalStateException if a line is drawn on an existing line.
+     */
+    @Test
+    public void testIsSameHorizontalLine(){
+        logger.info("Testing if a line has already been drawn");
+
+        DotsAndBoxesGrid grid = new DotsAndBoxesGrid(2,2, 1);
+        grid.drawHorizontal(0,0,1);
+        assertThrows(IllegalStateException.class, () -> grid.drawHorizontal(0,0,1),
+                "Line already drawn");
+    }
+
 }