public async Task LoadGroupModel()
{
IDataModel dm = await _dbContext.LoadModelAsync(null, "a2test.GroupModel");
var md = new MetadataTester(dm);
md.IsAllKeys("TRoot,TModel");
md.HasAllProperties("TRoot", "Model");
md.HasAllProperties("TModel", "Company,Agent,Amount,Items");
var dt = new DataTester(dm, "Model");
dt.AreValueEqual(550M, "Amount");
dt.IsNull("Company");
dt.IsNull("Agent");
dt = new DataTester(dm, "Model.Items");
dt.IsArray(2);
dt.AreArrayValueEqual("Company 1", 0, "Company");
dt.AreArrayValueEqual("Company 2", 1, "Company");
dt.AreArrayValueEqual(500M, 0, "Amount");
dt.AreArrayValueEqual(50M, 1, "Amount");
dt = new DataTester(dm, "Model.Items[0].Items");
dt.IsArray(2);
dt.AreArrayValueEqual("Company 1", 0, "Company");
dt.AreArrayValueEqual("Company 1", 1, "Company");
dt.AreArrayValueEqual("Agent 1", 0, "Agent");
dt.AreArrayValueEqual("Agent 2", 1, "Agent");
dt.AreArrayValueEqual(400M, 0, "Amount");
dt.AreArrayValueEqual(100M, 1, "Amount");
dt = new DataTester(dm, "Model.Items[1].Items");
dt.IsArray(2);
dt.AreArrayValueEqual("Company 2", 0, "Company");
dt.AreArrayValueEqual("Company 2", 1, "Company");
dt.AreArrayValueEqual("Agent 1", 0, "Agent");
dt.AreArrayValueEqual("Agent 2", 1, "Agent");
dt.AreArrayValueEqual(40M, 0, "Amount");
dt.AreArrayValueEqual(10M, 1, "Amount");
}