public void deleteRegionsButTheBiggest_withTwoRegions()
{
RectShape shape = new RectShape(new Cell(0, 0), new OIGrid(10, 10));
//REG 1
shape.setCellValue(1, 1, XTile.FLOOR);
//REG 2s
shape.setCellValue(3, 1, XTile.FLOOR);
shape.setCellValue(3, 2, XTile.FLOOR);
shape.setCellValue(3, 3, XTile.FLOOR);
Assert.AreEqual(2, shape.regionsNumber());
shape.deleteRegionsButTheBiggest();
Assert.AreEqual(1, shape.regionsNumber());
Assert.IsTrue(shape.hasCellValue(1, 1, XTile.WALL));
Assert.IsTrue(shape.hasCellValue(3, 1, XTile.FLOOR));
Assert.IsTrue(shape.hasCellValue(3, 2, XTile.FLOOR));
Assert.IsTrue(shape.hasCellValue(3, 3, XTile.FLOOR));
}