public void TestMethodWithPartiallyFillTileReturnsEmptyStringId()
{
using (var utfGrid = new Utf8Grid(1,1,1,1))
{
var graphics = utfGrid.CreateGraphics();
var brush = Utf8Grid.CreateBrush(5);
graphics.FillRectangle(brush, 0, 0, 10, 10);
var json = utfGrid.CreateUtfGridJson();
Assert.AreEqual(2, utfGrid.Keys.Count);
Assert.AreEqual("", utfGrid.Keys[0]);
Assert.AreEqual("5", utfGrid.Keys[1]);
}
}