add working test cases

src/test/java/dotsandboxes/DotsAndBoxesGridTest.java

@@ -27,5 +27,33 @@ public class DotsAndBoxesGridTest {
         assertTrue(true);
     }
 
-    // FIXME: You need to write tests for the two known bugs in the code.
+    /*
+     * 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
+     * or more assertions to check that a condition holds.
+     *
+     * This is a dummy test just to show that the test suite itself runs
+     */
+    @Test
+    public void ifSquareIsComplete() {
+        DotsAndBoxesGrid grid = new DotsAndBoxesGrid(15, 8, 2);
+        grid.drawHorizontal(2,2,1);
+        grid.drawVertical(2,2,1)
+
+        assertTrue(grid.boxComplete(2,2));
+    }
+
+    /*
+     * 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
+     * or more assertions to check that a condition holds.
+     *
+     * This is a dummy test just to show that the test suite itself runs
+     */
+    @Test
+    public void drawLineOnlyIfMissing() {
+        DotsAndBoxesGrid grid = new DotsAndBoxesGrid(15, 8, 2);
+        grid.drawHorizontal(2,2,1);
+        assertTrue(!grid.drawHorizontal(2,2,1));
+    }
 }