Merge branch '1-fix-assignment-errors' into 'main'

Unit tests added

Closes #1

See merge request !1

src/test/java/dotsandboxes/DotsAndBoxesGridTest.java

@@ -27,5 +27,30 @@ public class DotsAndBoxesGridTest {
         assertTrue(true);
     }
 
-    // FIXME: You need to write tests for the two known bugs in the code.
+    @Test
+    public void boxCompleteDetectsCompletedBoxes() {
+        // A grid where we're going to draw a box, and then test whether it's complete
+        DotsAndBoxesGrid case1 = new DotsAndBoxesGrid(5, 5, 2);
+        case1.drawHorizontal(0, 0, 0);
+        case1.drawVertical(0, 0, 1);
+        case1.drawHorizontal(0, 1, 0);
+        case1.drawVertical(1, 0, 1);
+
+        assertTrue(case1.boxComplete(0, 0));
+        assertTrue(case1.boxComplete(1, 1));
+        assertTrue(case1.getHorizontal(0, 0)&&case1.getVertical(0, 0));
+        assertTrue(case1.getHorizontal(1, 0)&&case1.getVertical(1, 0));
+
+    }
+
+    @Test
+    public void drawHorizontalTest() {
+        DotsAndBoxesGrid case1 = new DotsAndBoxesGrid(5, 5, 2);
+        case1.drawHorizontal(0, 0, 0);
+        case1.drawVertical(0, 0, 1);
+        case1.drawHorizontal(0, 1, 0);
+        case1.drawVertical(1, 0, 1);
+
+        assertThrows(RuntimeException.class, () -> {case1.drawHorizontal(0, 0, 0);});
+    }
 }