public async Task NullableInt() {
var em = await TestFns.NewEm(_serviceName);
var emp = new Employee() {
FirstName = "Test",
LastName = "Test"
};
em.AddEntity(emp);
Assert.IsTrue(emp.ReportsToEmployeeID == null, "fk should be null");
var sr = await em.SaveChanges();
Assert.IsTrue(sr.Entities.Count == 1);
Assert.IsTrue(emp.ReportsToEmployeeID == null, "fk should still be null");
emp.ReportsToEmployeeID = 0;
Assert.IsTrue(emp.ReportsToEmployeeID == 0, "fk should be 0");
try {
var sr2 = await em.SaveChanges();
Assert.Fail("should not get here");
}
catch (SaveException e) {
Assert.IsTrue(e.Message.Contains("constraint"), "error should mention fk constraint violation");
}
emp.EntityAspect.Delete();
var sr3 = await em.SaveChanges();
Assert.IsTrue(sr3.Entities.Count == 1);
}
public async Task INotifyDataErrorInfo() {
var em1 = await TestFns.NewEm(_serviceName);
var emp = new Employee();
var inde = (INotifyDataErrorInfo) emp;
Assert.IsTrue(!inde.HasErrors);
var eventArgsList = new List<DataErrorsChangedEventArgs>();
inde.ErrorsChanged += (s, e) => {
eventArgsList.Add(e);
};
em1.AttachEntity(emp);
Assert.IsTrue(eventArgsList.Count == 2); // firstName, lastName
// magicString
var fnErrors = inde.GetErrors(EntityAspect.AllErrors).Cast<ValidationError>();
Assert.IsTrue(fnErrors.Count() == 2);
Assert.IsTrue(
fnErrors.All(err => err.Context.PropertyPath == "LastName" || err.Context.PropertyPath == "FirstName"));
fnErrors = inde.GetErrors("FirstName").Cast<ValidationError>();
Assert.IsTrue(fnErrors.Count() == 1);
Assert.IsTrue(inde.HasErrors);
emp.FirstName = "test";
Assert.IsTrue(eventArgsList.Count == 3);
fnErrors = inde.GetErrors(EntityAspect.AllErrors).Cast<ValidationError>();
Assert.IsTrue(fnErrors.Count() == 1);
fnErrors = inde.GetErrors("FirstName").Cast<ValidationError>();
Assert.IsTrue(fnErrors.Count() == 0);
Assert.IsTrue(inde.HasErrors);
emp.FirstName = "a very long name that exceeds the valid length of the field" + ".".PadRight(40);
Assert.IsTrue(eventArgsList.Count == 4);
fnErrors = inde.GetErrors(EntityAspect.AllErrors).Cast<ValidationError>();
Assert.IsTrue(fnErrors.Count() == 2);
fnErrors = inde.GetErrors("FirstName").Cast<ValidationError>();
Assert.IsTrue(fnErrors.Count() == 1);
Assert.IsTrue(inde.HasErrors);
emp.FirstName = "xxx";
emp.LastName = "yyy";
Assert.IsTrue(eventArgsList.Count == 6);
fnErrors = inde.GetErrors(EntityAspect.AllErrors).Cast<ValidationError>();
Assert.IsTrue(fnErrors.Count() == 0);
fnErrors = inde.GetErrors("FirstName").Cast<ValidationError>();
Assert.IsTrue(fnErrors.Count() == 0);
Assert.IsTrue(!inde.HasErrors);
}
public async Task HasChangesChangedAfterSave() {
await _emTask;
var hccArgs = new List<EntityManagerHasChangesChangedEventArgs>();
_em1.HasChangesChanged += (s, e) => {
hccArgs.Add(e);
};
var emp = new Employee() { FirstName = "Test_Fn", LastName = "Test_Ln" };
_em1.AddEntity(emp);
Assert.IsTrue(hccArgs.Count == 1);
Assert.IsTrue(hccArgs.Last().HasChanges == true);
Assert.IsTrue(_em1.HasChanges());
var sr = await _em1.SaveChanges();
Assert.IsTrue(sr.Entities.Count == 1);
Assert.IsTrue(hccArgs.Count == 2);
Assert.IsTrue(hccArgs.Last().HasChanges == false);
Assert.IsTrue(_em1.HasChanges() == false);
}
public async Task RejectChangesFkFixup() {
var em1 = await TestFns.NewEm(_serviceName);
var emp1 = new Employee();
em1.AttachEntity(emp1);
var emp2 = em1.CreateEntity<Employee>();
var order1 = new Order();
emp1.Orders.Add(order1);
Assert.IsTrue(order1.EntityAspect.EntityState.IsAdded());
Assert.IsTrue(order1.Employee == emp1);
order1.EntityAspect.AcceptChanges();
// move the order;
emp2.Orders.Add(order1);
Assert.IsTrue(emp1.Orders.Count == 0);
Assert.IsTrue(emp2.Orders.Count == 1);
Assert.IsTrue(order1.Employee == emp2);
Assert.IsTrue(order1.EntityAspect.EntityState.IsModified());
order1.EntityAspect.RejectChanges();
Assert.IsTrue(order1.Employee == emp1);
Assert.IsTrue(emp1.Orders.Count == 1);
Assert.IsTrue(emp2.Orders.Count == 0);
}
public async Task ExpImpTempKeyFixup2() {
var em1 = await TestFns.NewEm(_serviceName);
var q = new EntityQuery<Foo.Supplier>("Suppliers").Where(s => s.CompanyName.StartsWith("P"));
var suppliers = await q.Execute(em1);
Assert.IsTrue(suppliers.Count() > 0, "should be some suppliers");
var orderIdProp = MetadataStore.Instance.GetEntityType("Order").KeyProperties[0];
em1.KeyGenerator.GetNextTempId(orderIdProp);
var order1 = new Order();
var emp1 = new Employee();
em1.AddEntity(order1); em1.AddEntity(emp1);
emp1.LastName = "bar";
var cust1 = new Customer() { CompanyName = "Foo" };
order1.Employee = emp1;
order1.Customer = cust1;
var exportedEm = em1.ExportEntities(null, false);
var em2 = new EntityManager(em1);
em2.ImportEntities(exportedEm);
var suppliers2 = em2.GetEntities<Supplier>().ToList();
Assert.IsTrue(suppliers.Count() == suppliers2.Count, "should be the same number of suppliers");
var addedOrders = em2.GetEntities<Order>(EntityState.Added);
Assert.IsTrue(addedOrders.Count() == 1, "should be 1 added order");
var order1x = addedOrders.First();
var cust1x = order1x.Customer;
Assert.IsTrue(cust1x.CompanyName == "Foo", "customer company name should be 'Foo'");
var emp1x = order1x.Employee;
Assert.IsTrue(emp1x.LastName == "bar", "lastName should be 'bar'");
}
public async Task ExpImpTempKeyFixup1() {
var em1 = await TestFns.NewEm(_serviceName);
var q = new EntityQuery<Foo.Employee>("Employees").Take(3);
var results = await q.Execute(em1);
Assert.IsTrue(results.Count() > 0);
var emp1 = new Employee();
var order1 = new Order();
var order2 = new Order();
em1.AddEntity(emp1);
emp1.Orders.Add(order1);
emp1.Orders.Add(order2);
var exportedEntities = em1.ExportEntities(null, false);
// custs1 and 2 shouldn't be imported because of default preserveChanges
// emps1 and 2 should cause the creation of NEW emps with new temp ids;
// tempKeys should cause creation of new entities;
var impResult = em1.ImportEntities(exportedEntities);
var allEntities = em1.GetEntities();
Assert.IsTrue(allEntities.Count() == 9, "should have 9 (3 orig, 3 added, 3 imported (new) entities in the cache");
Assert.IsTrue(allEntities.OfType<Order>().Count() == 4, "should be 4 orders (2 + 2)");
Assert.IsTrue(allEntities.OfType<Employee>().Count() == 5, "should be 5 emps (3 + 1 + 1) ");
Assert.IsTrue(allEntities.OfType<Employee>().Count(c => c.EntityAspect.EntityState.IsAdded()) == 2, "should only be 2 added emps");
Assert.IsTrue(allEntities.OfType<Order>().All(c => c.EntityAspect.EntityState.IsAdded()));
Assert.IsTrue(impResult.ImportedEntities.Count == 6, "should have imported 6 entities - 3 orig + 3 new");
Assert.IsTrue(impResult.ImportedEntities.OfType<Order>().Count() == 2, "should have imported 2 orders");
Assert.IsTrue(impResult.ImportedEntities.OfType<Employee>().Count(e => e.EntityAspect.EntityState.IsAdded()) == 1, "should have imported 1 added emp");
Assert.IsTrue(impResult.ImportedEntities.OfType<Employee>().Count(e => e.EntityAspect.EntityState.IsUnchanged()) == 3, "should have imported 3 unchanged emps");
Assert.IsTrue(impResult.TempKeyMap.Count == 3, "tempKeyMap should be of length 3");
Assert.IsTrue(impResult.TempKeyMap.All(kvp => kvp.Key != kvp.Value), "imported entities should not have same key values");
var newOrders = impResult.ImportedEntities.OfType<Order>();
var newEmp = impResult.ImportedEntities.OfType<Employee>().First(e => e.EntityAspect.EntityState.IsAdded());
Assert.IsTrue(newOrders.All(no => no.EmployeeID == newEmp.EmployeeID), "should have updated order empId refs");
}
public async Task AttachRecursive() {
await _emTask;
var emp1 = new Employee();
var emp2 = new Employee();
var emp3 = new Employee();
emp2.Manager = emp1;
emp3.Manager = emp2;
_em1.AttachEntity(emp3);
Assert.IsTrue(emp3.EntityAspect.IsAttached);
Assert.IsTrue(emp2.EntityAspect.IsAttached);
Assert.IsTrue(emp1.EntityAspect.IsAttached);
Assert.IsTrue(emp1.DirectReports.Contains(emp2), "emp1 manages emp2");
Assert.IsTrue(emp2.DirectReports.Contains(emp3), "emp2 manages emp3");
Assert.IsTrue(emp2.Manager == emp1, "emp2 manager is emp1");
Assert.IsTrue(emp3.Manager == emp2, "emp3 mamager is emp2");
}
public async Task ChangeMessageBaseAndAssembly() {
var em1 = await TestFns.NewEm(_serviceName);
var emp = new Employee();
var vr = new RequiredValidator().WithMessage("Model.NorthwindIB.CustomMessages2", typeof (Employee).Assembly);
var dp = emp.EntityAspect.EntityType.GetDataProperty("LastName");
var vc = new ValidationContext(emp, dp, null);
var ve = vr.Validate(vc);
Assert.IsTrue(ve != null);
Assert.IsTrue(ve.Message.Contains("LastName") && ve.Message.Contains("required") &&
ve.Message.Contains("CUSTOM 2"));
Assert.IsTrue(ve.Context.Entity == emp);
Assert.IsTrue(ve.Validator == vr);
Assert.IsTrue(ve.Key != null);
}
public async Task OnAttach() {
var em1 = await TestFns.NewEm(_serviceName);
var emp = new Employee();
Assert.IsTrue(!emp.EntityAspect.GetValidationErrors().Any(), "should not be any validation errors");
em1.AddEntity(emp);
var ves = emp.EntityAspect.GetValidationErrors();
Assert.IsTrue(ves.Any(), "should be some now");
Assert.IsTrue(ves.Any(ve => ve.Message.Contains("LastName") && ve.Message.Contains("required")));
Assert.IsTrue(ves.All(ve => ve.Context.Entity == emp));
Assert.IsTrue(ves.Any(ve => ve.Validator.Equals(new RequiredValidator().Intern())),
"validator should be a requiredValdator. ");
Assert.IsTrue(ves.All(ve => ve.Key != null));
}
public async Task RequiredProperty2() {
var em1 = await TestFns.NewEm(_serviceName);
using (TestFns.ShareWithDetached(em1.MetadataStore)) {
var emp = new Employee();
var dp = emp.EntityAspect.EntityType.GetDataProperty("LastName");
var ves = emp.EntityAspect.ValidateProperty(dp);
Assert.IsTrue(ves.Count() > 0);
var ve1 = ves.First();
Assert.IsTrue(ve1.Message.Contains("LastName") && ve1.Message.Contains("required"));
Assert.IsTrue(ve1.Context.Entity == emp);
Assert.IsTrue(ves.Any(ve => ve.Validator.Equals(new RequiredValidator().Intern())),
"validator should be a requiredValdator. ");
Assert.IsTrue(ve1.Key != null);
}
}
public async Task DeleteFromNavCollection2()
{
var em1 = await TestFns.NewEm(_serviceName);
var emp1 = new Employee();
var et1 = new EmployeeTerritory();
var et2 = new EmployeeTerritory();
var ter1 = new Territory() { TerritoryID = 11 };
var ter2 = new Territory() { TerritoryID = 22 };
em1.AddEntity(emp1);
//em1.AddEntity(ter1);
//em1.AddEntity(ter2);
//em1.AddEntity(et1);
//em1.AddEntity(et2);
et1.Territory = ter1;
et2.Territory = ter2;
var empterrs = emp1.EmployeeTerritories;
empterrs.Add(et1);
empterrs.Add(et2);
em1.AcceptChanges();
Assert.IsTrue(et1.Employee == emp1, "Employee is attached to EmployeeTerritory");
Assert.IsTrue(emp1.EmployeeTerritories.Count == 2, "Employee has EmployeeTerritories");
Assert.IsTrue(et1.Territory == ter1, "Territory is attached to EmployeeTerritory");
Assert.IsTrue(ter1.EmployeeTerritories.Count == 1, "Territory has EmployeeTerritories");
var collectionChangedList = new List<NotifyCollectionChangedEventArgs>();
empterrs.CollectionChanged += (s, e) =>
{
collectionChangedList.Add(e);
};
var propChangedList = new List<PropertyChangedEventArgs>();
((INotifyPropertyChanged)et1).PropertyChanged += (s, e) =>
{
propChangedList.Add(e);
};
var entityChangedList = new List<EntityChangedEventArgs>();
em1.EntityChanged += (s, e) =>
{
entityChangedList.Add(e);
};
et1.EntityAspect.Delete();
Assert.IsTrue(collectionChangedList.Last().Action == NotifyCollectionChangedAction.Remove, "should have removed from collection");
Assert.IsTrue(collectionChangedList.Last().OldItems.Contains(et1), "change event should contain et1");
//Assert.IsTrue(propChangedList.Count == 0, "Deleting an entity will not create a propertyChange event");
Assert.IsTrue(!empterrs.Contains(et1), "et1 should have been removed");
Assert.IsTrue(et1.Employee == null, "Employee should be null");
Assert.IsTrue(et1.Territory == null, "Territory should be null");
Assert.IsTrue(et1.EmployeeID == emp1.EmployeeID, "EmployeeID should NOT be cleared when detached - just the Employee");
Assert.IsTrue(et1.TerritoryID == ter1.TerritoryID, "TerritoryID should NOT be cleared when detached - just the Territory");
Assert.IsTrue(et1.EntityAspect.EntityState.IsDeleted(), "state should be deleted");
Assert.IsTrue(empterrs.Count == 1, "count should be 1");
collectionChangedList.Clear();
propChangedList.Clear();
et1.EntityAspect.RejectChanges();
Assert.IsTrue(collectionChangedList.Last().Action == NotifyCollectionChangedAction.Add, "should have added to collection");
Assert.IsTrue(collectionChangedList.Last().NewItems.Contains(et1), "change event should contain employeeTerritory");
Assert.IsTrue(propChangedList.Any(args => args.PropertyName == "Employee"), "propChange should mention Employee");
Assert.IsTrue(propChangedList.Any(args => args.PropertyName == "Territory"), "propChange should mention Territory");
// Not needed because CustomerID is not cleared.
// Assert.IsTrue(propChangedList.Any(args => args.PropertyName == "CustomerID"), "propChange should mention CustomerID");
Assert.IsTrue(empterrs.Contains(et1), "et1 should be back");
Assert.IsTrue(et1.Employee == emp1, "Employee should be back");
Assert.IsTrue(et1.Territory == ter1, "Territory should be back");
Assert.IsTrue(et1.EmployeeID == emp1.EmployeeID, "EmployeeID should not have changed"); // null because not required.
Assert.IsTrue(et1.EntityAspect.EntityState.IsUnchanged(), "State should be unchanged but is " + et1.EntityAspect.EntityState);
Assert.IsTrue(empterrs.Count == 2, "count should be 2");
}
public async Task AttachRecursive() {
var em1 = await TestFns.NewEm(_serviceName);
using (TestFns.ShareWithDetached(em1.MetadataStore)) {
var emp1 = new Employee();
var emp2 = new Employee();
var emp3 = new Employee();
emp2.Manager = emp1;
emp3.Manager = emp2;
em1.AddEntity(emp3);
Assert.IsTrue(emp3.EntityAspect.IsAttached);
Assert.IsTrue(emp2.EntityAspect.IsAttached);
Assert.IsTrue(emp1.EntityAspect.IsAttached);
Assert.IsTrue(emp1.DirectReports.Contains(emp2), "emp1 manages emp2");
Assert.IsTrue(emp2.DirectReports.Contains(emp3), "emp2 manages emp3");
Assert.IsTrue(emp2.Manager == emp1, "emp2 manager is emp1");
Assert.IsTrue(emp3.Manager == emp2, "emp3 manager is emp2");
}
}
public async Task ChangeMessageBaseAndAssembly() {
await _emTask;
var emp = new Employee();
var vr = new RequiredValidator().WithMessage("Model_Northwind_NetClient.CustomMessages2", typeof(Employee).Assembly);
var dp = emp.EntityAspect.EntityType.GetDataProperty("LastName");
var vc = new ValidationContext(emp, null, dp);
var ve = vr.Validate(vc);
Assert.IsTrue(ve != null);
Assert.IsTrue(ve.Message.Contains("LastName") && ve.Message.Contains("required") && ve.Message.Contains("CUSTOM 2"));
Assert.IsTrue(ve.Context.Instance == emp);
Assert.IsTrue(ve.Validator == vr);
Assert.IsTrue(ve.Key != null);
}
public async Task OnAttach() {
await _emTask;
var emp = new Employee();
Assert.IsTrue(!emp.EntityAspect.GetValidationErrors().Any(), "should not be any validation errors");
_em1.AddEntity(emp);
var ves = emp.EntityAspect.GetValidationErrors();
Assert.IsTrue(ves.Any(), "should be some now");
Assert.IsTrue(ves.Any(ve => ve.Message.Contains("LastName") && ve.Message.Contains("required")));
Assert.IsTrue(ves.All(ve => ve.Context.Instance == emp));
Assert.IsTrue(ves.Any(ve => ve.Validator == new RequiredValidator().Intern()), "validator should a requiredValdator");
Assert.IsTrue(ves.All(ve => ve.Key != null));
}
public async Task NullableProperty() {
var em1 = await TestFns.NewEm(_serviceName);
var emp = new Employee() { FirstName = "Test Joe", LastName = "Test Smith" , BirthDate = DateTime.Now };
Assert.IsTrue(emp.BirthDate != null);
em1.AddEntity(emp);
Assert.IsTrue(emp.BirthDate != null);
emp.BirthDate = null;
var sr = await em1.SaveChanges(new IEntity[] { emp });
Assert.IsTrue(sr.Entities.Count == 1);
Assert.IsTrue(sr.Entities.First() == emp);
Assert.IsTrue(emp.BirthDate == null);
emp.EntityAspect.Delete();
var sr2 = await em1.SaveChanges();
Assert.IsTrue(sr.Entities.Count == 1);
Assert.IsTrue(em1.GetEntities().Count() == 0);
}
public async Task DeleteWithoutQuery() {
var em1 = await TestFns.NewEm(_serviceName);
var emp = new Employee();
emp.FirstName = "Test Fn";
emp.LastName = "Test Fn";
em1.AddEntity(emp);
var sr = await em1.SaveChanges();
Assert.IsTrue(sr.Entities.Count == 1, "should have saved 1 entity");
Assert.IsTrue(sr.Entities.First() == emp, "should be the same emp");
var em2 = new EntityManager(em1);
em2.ImportEntities(em1.ExportEntities());
var sameEmp = (Employee) em2.GetEntities().First();
Assert.IsTrue(emp.EntityAspect.EntityKey == sameEmp.EntityAspect.EntityKey, "should have the same key");
sameEmp.EntityAspect.Delete();
Assert.IsTrue(sameEmp.EntityAspect.EntityState.IsDeleted());
var sr2 = await em2.SaveChanges();
Assert.IsTrue(sr2.Entities.First() == sameEmp, "should still be the same emp");
Assert.IsTrue(sameEmp.EntityAspect.EntityState.IsDetached());
Assert.IsTrue(em2.GetEntities().Count() == 0, "should be no entities");
}
public async Task RequiredProperty2() {
await _emTask;
var emp = new Employee();
var dp = emp.EntityAspect.EntityType.GetDataProperty("LastName");
var ves = emp.EntityAspect.ValidateProperty(dp);
Assert.IsTrue(ves.Count() > 0);
var ve = ves.First();
Assert.IsTrue(ve.Message.Contains("LastName") && ve.Message.Contains("required"));
Assert.IsTrue(ve.Context.Entity == emp);
Assert.IsTrue(ve.Validator == new RequiredValidator().Intern(), "validator should a requiredValdator");
Assert.IsTrue(ve.Key != null);
}
public async Task EntireEntity() {
var em1 = await TestFns.NewEm(_serviceName);
using (TestFns.ShareWithDetached(em1.MetadataStore)) {
var emp = new Employee();
var ves = emp.EntityAspect.Validate();
Assert.IsTrue(ves.Count() == 2, "should only be 2 emp validation errors here");
Assert.IsTrue(ves.Any(ve => ve.Message.Contains("LastName") && ve.Message.Contains("required")));
Assert.IsTrue(ves.All(ve => ve.Context.Entity == emp));
var msg = ves.Select(ve =>
ve.Validator.GetType() + " "
+ ve.Key + " " +
(ve.Validator.Equals(new RequiredValidator().Intern())).ToString()
).ToAggregateString(" ,");
Assert.IsTrue(ves.Any(ve => ve.Validator.Equals(new RequiredValidator().Intern())),
"validator should be a requiredValdator. " + msg);
Assert.IsTrue(ves.All(ve => ve.Key != null));
}
}
public async Task EntireEntity() {
await _emTask;
var emp = new Employee();
var ves = emp.EntityAspect.Validate();
Assert.IsTrue(ves.Count() > 0);
Assert.IsTrue(ves.Any(ve => ve.Message.Contains("LastName") && ve.Message.Contains("required")));
Assert.IsTrue(ves.All(ve => ve.Context.Entity == emp));
Assert.IsTrue(ves.Any(ve => ve.Validator == new RequiredValidator().Intern()), "validator should a requiredValdator");
Assert.IsTrue(ves.All(ve => ve.Key != null));
}
public async Task ChangeMessageString() {
var em1 = await TestFns.NewEm(_serviceName);
var emp = new Employee();
var vr = new RequiredValidator().WithMessage("{0} is bad");
var dp = emp.EntityAspect.EntityType.GetDataProperty("LastName");
var vc = new ValidationContext(emp, dp, null);
var ve = vr.Validate(vc);
Assert.IsTrue(ve != null);
Assert.IsTrue(ve.Message.Contains("LastName") && ve.Message.Contains("bad"));
Assert.IsTrue(ve.Context.Entity == emp);
Assert.IsTrue(ve.Validator == vr);
Assert.IsTrue(ve.Key != null);
}
public async Task ChangeMessageResourceType() {
await _emTask;
var emp = new Employee();
var vr = new RequiredValidator().WithMessage(typeof(Model_Northwind_NetClient.CustomMessages1));
var dp = emp.EntityAspect.EntityType.GetDataProperty("LastName");
var vc = new ValidationContext(emp, dp, null);
var ve = vr.Validate(vc);
Assert.IsTrue(ve != null);
Assert.IsTrue(ve.Message.Contains("LastName") && ve.Message.Contains("required") && ve.Message.Contains("CUSTOM 1"));
Assert.IsTrue(ve.Context.Entity == emp);
Assert.IsTrue(ve.Validator == vr);
Assert.IsTrue(ve.Key != null);
}
public async Task RequiredProperty() {
await _emTask;
var emp = new Employee();
var vr = new RequiredValidator();
var dp = emp.EntityAspect.EntityType.GetDataProperty("LastName");
var vc = new ValidationContext(emp, dp, null);
var ve = vr.Validate(vc);
Assert.IsTrue(ve != null);
Assert.IsTrue(ve.Message.Contains("LastName") && ve.Message.Contains("required"));
Assert.IsTrue(ve.Context.Entity == emp);
Assert.IsTrue(ve.Validator == vr);
Assert.IsTrue(ve.Key != null);
}
public async Task RemovingNavigationProperty() {
var entityManager = await TestFns.NewEm(_serviceName);
var employee = new Employee() {
FirstName = "First",
LastName = "Employee"
};
entityManager.AddEntity(employee);
var manager = new Employee() {
FirstName = "First",
LastName = "Manager"
};
entityManager.AddEntity(manager);
employee.Manager = manager;
try {
var saveResult = await entityManager.SaveChanges();
// Now reverse everything
manager.EntityAspect.Delete();
employee.Manager = null;
employee.EntityAspect.Delete();
saveResult = await entityManager.SaveChanges();
} catch (Exception e) {
var message = string.Format("Save should have succeeded; Received {0}: {1}",
e.GetType().Name, e.Message);
Assert.Fail(message);
}
}