added unit tests for issue #1

src/test/java/dotsandboxes/DotsAndBoxesGridTest.java

@@ -21,11 +21,60 @@ public class DotsAndBoxesGridTest {
      *
      * This is a dummy test just to show that the test suite itself runs
      */
+
     @Test
     public void testTestSuiteRuns() {
         logger.info("Dummy test to show the test suite runs");
         assertTrue(true);
     }
 
+    @Test
+    public void noLinesDrawnTest() {
+        logger.error("Test whether boxComplete shows false with no lines drawn");
+        DotsAndBoxesGrid grid = new DotsAndBoxesGrid(15, 8, 2);
+        assertFalse(grid.boxComplete(0, 0));
+    }
+
+    @Test
+    public void oneLineTest() {
+        logger.error("Test whether boxComplete shows false with one line on each side drawn");
+        DotsAndBoxesGrid grid = new DotsAndBoxesGrid(15, 8, 2);
+        grid.drawHorizontal(0,0,1);
+        grid.drawVertical(0,0,1);
+        assertFalse(grid.boxComplete(0, 0));
+    }
+
+    @Test
+    public void completeBoxTest() {
+        logger.error("Test whether boxComplete shows true with whole box");
+        DotsAndBoxesGrid grid = new DotsAndBoxesGrid(15, 8, 2);
+        grid.drawHorizontal(0,0,1);
+        grid.drawHorizontal(0,1,1);
+        grid.drawVertical(0,0,1);
+        grid.drawVertical(1,0,1);
+        assertTrue(grid.boxComplete(0, 0));
+    }
+    @Test
+    public void horizontalReDrawTest() {
+        logger.error("Test whether drawHorizontal throws exception if line is already present");
+        DotsAndBoxesGrid grid = new DotsAndBoxesGrid(15, 8, 2);
+        grid.drawHorizontal(0,0,1);
+        assertThrows(RuntimeException.class, () -> grid.boxComplete(0, 0));
+    }
+    @Test
+    public void verticalReDrawTest() {
+        logger.error("Test whether drawHorizontal throws exception if line is already present");
+        DotsAndBoxesGrid grid = new DotsAndBoxesGrid(15, 8, 2);
+        grid.drawVertical(0,0,1);
+        assertThrows(RuntimeException.class, () -> grid.drawVertical(0, 0,1));
+    }
+
+
+
+
+
+
+
+
     // FIXME: You need to write tests for the two known bugs in the code.
 }