public void InitOrdersTest()
{
var model = new GridModel <Customer>(GridKey);
model.Columns.For(c => c.Name, "Name")
.SortColumn(c => c.Name, SortDirection.Ascending)
.GroupColumn(c => c.Name, 5);
model.Columns.For(c => c.Country, "Country")
.SortColumn(c => c.Country, SortDirection.Descending, 4)
.GroupColumn(c => c.Country, 4);
model.Columns.For(c => c.City, "City").SortColumn(c => c.City, SortDirection.Ascending, 2);
model.InitOrders();
Assert.IsTrue(model.Columns.First(c => c.Key == "Name").Value.SortOrder == 0);
Assert.IsTrue(model.Columns.First(c => c.Key == "City").Value.SortOrder == 1);
Assert.IsTrue(model.Columns.First(c => c.Key == "Country").Value.SortOrder == 2);
Assert.IsTrue(model.Columns.First(c => c.Key == "Name").Value.GroupOrder == 1);
Assert.IsTrue(model.Columns.First(c => c.Key == "Country").Value.GroupOrder == 0);
Assert.IsTrue(model.Columns.First(c => c.Key == "City").Value.GroupOrder == null);
}