public void LeftWithExplicitParen() { EmployeeCollection collection = new EmployeeCollection(); collection.es.Connection.ConnectionString = UnitTestBase.GetFktString(collection.es.Connection); EmployeeQuery eq = new EmployeeQuery("eq"); CustomerQuery cq = new CustomerQuery("cq"); eq.Select(eq.EmployeeID, eq.LastName, cq.CustomerName); eq.LeftJoin(cq).On(eq.EmployeeID == cq.StaffAssigned); eq.Where(eq.Age == 20); eq.Where(new esComparison(esParenthesis.Open)); eq.es.DefaultConjunction = esConjunction.Or; for (int i = 0; i < 4; i++) { eq.Where( eq.Supervisor == i & eq.EmployeeID == i + 1); } eq.Where(new esComparison(esParenthesis.Close)); Assert.IsTrue(collection.Load(eq)); Assert.AreEqual(5, collection.Count); }
public void WhereExists() { EmployeeCollection collection = new EmployeeCollection(); collection.es.Connection.ConnectionString = UnitTestBase.GetFktString(collection.es.Connection); // SubQuery of Employees with a null Supervisor column. EmployeeQuery sq = new EmployeeQuery("s"); sq.es.Distinct = true; sq.Select(sq.EmployeeID); sq.Where(sq.Supervisor.IsNull()); // If even one employee has a null supervisor, // i.e., the above query has a result set, // then run a list of all employees. EmployeeQuery eq = new EmployeeQuery("e"); eq.Select(eq.EmployeeID, eq.Supervisor); eq.Where(eq.Exists(sq)); Assert.IsTrue(collection.Load(eq)); Assert.AreEqual(5, collection.Count); }
public void TestSerializeQuery() { EmployeeQuery query = new EmployeeQuery("e"); query.Where(query.EmployeeID.In(1, 2, 3, new List <object>() { 1, 2, 3 })); string qq = EmployeeQuery.SerializeHelper.ToXml(query); List <Type> types = new List <Type>(); types.Add(typeof(EmployeeQuery)); EmployeeQuery employeeQuery = EmployeeQuery.SerializeHelper.FromXml( qq, typeof(EmployeeQuery), types) as EmployeeQuery; EmployeeCollection c = new EmployeeCollection(); c.es.Connection.Name = "ForeignKeyTest"; c.Load(employeeQuery); Assert.IsTrue(c.Count == 3); }
public void InnerJoinFourTables() { EmployeeCollection collection = new EmployeeCollection(); collection.es.Connection.ConnectionString = UnitTestBase.GetFktString(collection.es.Connection); EmployeeQuery emp = new EmployeeQuery("e"); EmployeeTerritoryQuery empTerr = new EmployeeTerritoryQuery("et"); TerritoryQuery terr = new TerritoryQuery("t"); TerritoryExQuery terrEx = new TerritoryExQuery("tx"); emp.Select(emp.FirstName, emp.LastName, terr.Description.As("Territory"), terrEx.Notes); emp.InnerJoin(empTerr).On(emp.EmployeeID == empTerr.EmpID); emp.InnerJoin(terr).On(terr.TerritoryID == empTerr.TerrID); emp.InnerJoin(terrEx).On(terrEx.TerritoryID == terr.TerritoryID); emp.Where(terrEx.Notes.IsNotNull()); Assert.IsTrue(collection.Load(emp)); Assert.AreEqual(2, collection.Count); string theName = collection[1].GetColumn("Territory") as string; Assert.AreEqual("North", theName); }
public void WhereInANDedTogetherOperator() { EmployeeCollection collection = new EmployeeCollection(); collection.es.Connection.ConnectionString = UnitTestBase.GetFktString(collection.es.Connection); EmployeeQuery eq1 = new EmployeeQuery("e1"); EmployeeQuery eq2 = new EmployeeQuery("e2"); EmployeeQuery eq3 = new EmployeeQuery("e3"); eq2.Select(eq2.EmployeeID); eq3.Select(eq3.EmployeeID); eq1.Where(eq1.EmployeeID.In(eq2) & eq1.EmployeeID.In(eq3)); Assert.IsTrue(collection.Load(eq1)); Assert.AreEqual(5, collection.Count); string lq = collection.Query.es.LastQuery; string[] one = lq.Split('1'); Assert.AreEqual(4, one.GetLength(0)); string[] two = lq.Split('2'); Assert.AreEqual(3, two.GetLength(0)); string[] three = lq.Split('3'); Assert.AreEqual(3, three.GetLength(0)); }
public void RightWithWhereIn() { EmployeeCollection collection = new EmployeeCollection(); collection.es.Connection.ConnectionString = UnitTestBase.GetFktString(collection.es.Connection); switch (collection.es.Connection.ProviderSignature.DataProviderName) { case "EntitySpaces.SQLiteProvider": Assert.Ignore("RIGHT JOIN not supported."); break; default: List <string> custList = new List <string>(); custList.Add("01001"); custList.Add("40000"); custList.Add("XXXXX"); EmployeeQuery eq = new EmployeeQuery("eq"); CustomerQuery cq = new CustomerQuery("cq"); eq.Select(eq.EmployeeID, eq.LastName, cq.CustomerID, cq.CustomerName); eq.RightJoin(cq).On(eq.EmployeeID == cq.Manager); eq.Where(cq.CustomerID.In(custList)); EmployeeCollection coll = new EmployeeCollection(); coll.es.Connection.Name = "ForeignKeyTest"; Assert.IsTrue(coll.Load(eq)); Assert.AreEqual(14, coll.Count); break; } }
public void WhereWithJoin() { EmployeeCollection collection = new EmployeeCollection(); collection.es.Connection.ConnectionString = UnitTestBase.GetFktString(collection.es.Connection); // SubQuery of Territories TerritoryQuery tq = new TerritoryQuery("t"); tq.Select(tq.TerritoryID); tq.Where(tq.Description == "North" | tq.Description == "West"); // EmployeeTerritory Query for Join EmployeeTerritoryQuery etq = new EmployeeTerritoryQuery("et"); // Employees matching those territories EmployeeQuery eq = new EmployeeQuery("e"); eq.es.Distinct = true; eq.Select(eq.EmployeeID, etq.TerrID); eq.LeftJoin(etq).On( eq.EmployeeID == etq.EmpID); eq.Where(etq.TerrID.In(tq)); eq.OrderBy(eq.EmployeeID.Ascending); Assert.IsTrue(collection.Load(eq)); Assert.AreEqual(3, collection.Count); }
public void LeftWithContains() { EmployeeCollection collection = new EmployeeCollection(); collection.es.Connection.ConnectionString = UnitTestBase.GetFktString(collection.es.Connection); switch (collection.es.Connection.ProviderSignature.DataProviderName) { case "EntitySpaces.SqlClientProvider": string nameTerm = "acme NEAR company"; EmployeeQuery eq = new EmployeeQuery("eq"); CustomerQuery cq = new CustomerQuery("cq"); eq.Select(eq.EmployeeID, eq.LastName, cq.CustomerName); eq.LeftJoin(cq).On(eq.EmployeeID == cq.StaffAssigned); eq.Where(cq.CustomerName.Contains(nameTerm)); Assert.IsTrue(collection.Load(eq)); Assert.AreEqual(2, collection.Count); break; default: Assert.Ignore("Not supported"); break; } }
public void SingleZeroToMany() { // The main Employee query EmployeeQuery eq1 = new EmployeeQuery("e"); eq1.Where(eq1.EmployeeID < 3); eq1.OrderBy(eq1.EmployeeID.Ascending); // The Order Collection OrderQuery oq1 = eq1.Prefetch <OrderQuery>(Employee.Prefetch_OrderCollectionByEmployeeID); EmployeeQuery eq2 = oq1.GetQuery <EmployeeQuery>(); oq1.Where(eq2.EmployeeID < 3); // Pre-test the Order query OrderCollection oColl = new OrderCollection(); oColl.es.Connection.Name = "ForeignKeyTest"; oColl.Load(oq1); Assert.AreEqual(3, oColl.Count, "Order pre-test"); // This will Prefetch the Order query EmployeeCollection coll = new EmployeeCollection(); coll.es.Connection.Name = "ForeignKeyTest"; //coll.es.IsLazyLoadDisabled = true; coll.Load(eq1); foreach (Employee emp in coll) { emp.es.IsLazyLoadDisabled = true; switch (emp.EmployeeID.Value) { case 1: Assert.AreEqual(1, emp.EmployeeID.Value); Assert.AreEqual(1, emp.OrderCollectionByEmployeeID.Count); break; case 2: Assert.AreEqual(2, emp.EmployeeID.Value); Assert.AreEqual(2, emp.OrderCollectionByEmployeeID.Count); break; default: Assert.Fail("Only employees 1 and 2 should be loaded."); break; } } }
public void SimpleIntersect() { EmployeeCollection collection = new EmployeeCollection(); collection.es.Connection.Name = "ForeignKeyTest"; EmployeeQuery eq1 = new EmployeeQuery("eq1"); EmployeeQuery eq2 = new EmployeeQuery("eq2"); // Only includes rows with both "n" and"a" eq1.Where(eq1.FirstName.Like("%n%")); eq1.Intersect(eq2); eq2.Where(eq2.FirstName.Like("%a%")); Assert.IsTrue(collection.Load(eq1)); Assert.AreEqual(2, collection.Count); }
public void SimpleUnion() { EmployeeCollection collection = new EmployeeCollection(); collection.es.Connection.Name = "ForeignKeyTest"; EmployeeQuery eq1 = new EmployeeQuery("eq1"); EmployeeQuery eq2 = new EmployeeQuery("eq2"); // This leaves out the record with Age 30 eq1.Where(eq1.Age < 30); eq1.Union(eq2); eq2.Where(eq2.Age > 30); Assert.IsTrue(collection.Load(eq1)); Assert.AreEqual(4, collection.Count); }
public void SimpleExcept() { EmployeeCollection collection = new EmployeeCollection(); collection.es.Connection.Name = "ForeignKeyTest"; EmployeeQuery eq1 = new EmployeeQuery("eq1"); EmployeeQuery eq2 = new EmployeeQuery("eq2"); // Includes all "J"s except "Jim" eq1.Where(eq1.FirstName.Like("%J%")); eq1.Except(eq2); eq2.Where(eq2.FirstName == "Jim"); Assert.IsTrue(collection.Load(eq1)); Assert.AreEqual(3, collection.Count); }
public void LeftWithDateComparisonInOn() { EmployeeCollection collection = new EmployeeCollection(); collection.es.Connection.ConnectionString = UnitTestBase.GetFktString(collection.es.Connection); EmployeeQuery eq = new EmployeeQuery("eq"); CustomerQuery cq = new CustomerQuery("cq"); eq.Select(eq.LastName); eq.LeftJoin(cq).On(eq.EmployeeID == cq.StaffAssigned & cq.DateAdded < Convert.ToDateTime("2005-12-31")); eq.Where(cq.DateAdded < Convert.ToDateTime("2000-12-31")); eq.OrderBy(eq.LastName.Ascending); Assert.IsTrue(collection.Load(eq)); Assert.AreEqual(7, collection.Count); }
public void SerializeDeserializeJoin() { if (aggTest.es.Connection.Name == "SqlCe") { Assert.Ignore("Not tested for SqlCe."); } else { // Test serializing a DynamicQuery // Must use binary serialization // Xml serialization doesn't serialize all of your private properties // 1) Create our Query on the client EmployeeQuery emp = new EmployeeQuery("eq"); //emp.es.Connection.Name = "ForeignKeyTest"; EmployeeTerritoryQuery et = new EmployeeTerritoryQuery("etq"); //et.es.Connection.Name = "ForeignKeyTest"; emp.Select(emp.FirstName, emp.LastName, et.TerrID); emp.InnerJoin(et).On(emp.EmployeeID == et.EmpID); emp.Where(emp.LastName.Like("S%")); // 2) Serialize it in binary BinaryFormatter bf = new BinaryFormatter(); MemoryStream ms = new MemoryStream(); bf.Serialize(ms, emp); byte[] query = ms.ToArray(); // 3) Send it over the wire // 4) Deserialize it on the Server bf = new BinaryFormatter(); ms = new MemoryStream(query); EmployeeQuery newQuery = bf.Deserialize(ms) as EmployeeQuery; // Now load it EmployeeCollection collection = new EmployeeCollection(); collection.es.Connection.Name = "ForeignKeyTest"; collection.Load(newQuery); Assert.AreEqual(5, collection.Count); Assert.AreEqual("S", collection[0].LastName.Substring(0, 1)); } }
public void TwoAddStringsWithToUpper() { EmployeeCollection collection = new EmployeeCollection(); collection.es.Connection.ConnectionString = UnitTestBase.GetFktString(collection.es.Connection); EmployeeQuery eq = new EmployeeQuery("eq"); eq.Select(eq.EmployeeID, (eq.LastName.ToUpper() + ", " + eq.FirstName).As("FullName")); eq.Where(eq.LastName == "Doe"); eq.OrderBy(eq.FirstName.Ascending); Assert.IsTrue(collection.Load(eq)); string theName = collection[0].GetColumn("FullName") as string; Assert.AreEqual("DOE, Jane", theName); }
public void AnyNestedBySubQuery() { OrderCollection collection = new OrderCollection(); collection.es.Connection.ConnectionString = UnitTestBase.GetFktString(collection.es.Connection); switch (collection.es.Connection.ProviderSignature.DataProviderName) { case "EntitySpaces.SQLiteProvider": Assert.Ignore("Not supported by SQLite."); break; default: // Employees whose LastName begins with 'S'. EmployeeQuery eq = new EmployeeQuery("e"); eq.Select(eq.EmployeeID); eq.Where(eq.LastName.Like("S%")); // DateAdded for Customers whose Managers are in the // EmployeeQuery above. CustomerQuery cq = new CustomerQuery("c"); cq.es.Any = true; cq.Select(cq.DateAdded); cq.Where(cq.Manager.In(eq)); // OrderID and CustID where the OrderDate is // less than any one of the dates in the CustomerQuery above. OrderQuery oq = new OrderQuery("o"); oq.Select( oq.OrderID, oq.CustID ); oq.Where(oq.OrderDate < cq); Assert.IsTrue(collection.Load(oq)); Assert.AreEqual(8, collection.Count); break; } }
public void NestedBySubQuery() { OrderCollection collection = new OrderCollection(); collection.es.Connection.ConnectionString = UnitTestBase.GetFktString(collection.es.Connection); // This is the same as the traditional nested SubQuery // in the 'Nested' test, but is easier to construct // and understand. // The key is to start with the innermost SubQuery, // and work your way out to the outermost Query. // Employees whose LastName begins with 'S'. EmployeeQuery eq = new EmployeeQuery("e"); eq.Select(eq.EmployeeID); eq.Where(eq.LastName.Like("S%")); // DateAdded for Customers whose Managers are in the // EmployeeQuery above. CustomerQuery cq = new CustomerQuery("c"); cq.Select(cq.DateAdded); cq.Where(cq.Manager.In(eq)); // OrderID and CustID where the OrderDate is in the // CustomerQuery above. OrderQuery oq = new OrderQuery("o"); oq.Select( oq.OrderID, oq.CustID ); oq.Where(oq.OrderDate.In(cq)); Assert.IsTrue(collection.Load(oq)); Assert.AreEqual(2, collection.Count); }
public void WhereExistsANDed() { EmployeeCollection collection = new EmployeeCollection(); collection.es.Connection.ConnectionString = UnitTestBase.GetFktString(collection.es.Connection); EmployeeQuery eq1 = new EmployeeQuery("e1"); EmployeeQuery eq2 = new EmployeeQuery("e2"); eq1.Where(eq1.EmployeeID > 2, eq1.Exists(eq2)); Assert.IsTrue(collection.Load(eq1)); Assert.AreEqual(3, collection.Count); string lq = collection.Query.es.LastQuery; string[] one = lq.Split('1'); Assert.AreEqual(4, one.GetLength(0)); string[] two = lq.Split('2'); Assert.AreEqual(2, two.GetLength(0)); }
public void LeftJoinFourTablesWithWhere() { EmployeeCollection collection = new EmployeeCollection(); collection.es.Connection.ConnectionString = UnitTestBase.GetFktString(collection.es.Connection); EmployeeQuery emp = new EmployeeQuery("e"); EmployeeTerritoryQuery empTerr = new EmployeeTerritoryQuery("et"); TerritoryQuery terr = new TerritoryQuery("t"); TerritoryExQuery terrEx = new TerritoryExQuery("tx"); emp.Select(emp.FirstName, emp.LastName, terr.Description.As("Territory"), terrEx.Notes); emp.LeftJoin(empTerr).On(emp.EmployeeID == empTerr.EmpID); emp.LeftJoin(terr).On(empTerr.TerrID == terr.TerritoryID); emp.LeftJoin(terrEx).On(terr.TerritoryID == terrEx.TerritoryID); emp.Where(emp.FirstName.Trim().Like("J___")); Assert.IsTrue(collection.Load(emp)); Assert.AreEqual(7, collection.Count); }
public void CombineJoinQueriedCollections() { EmployeeQuery eq1 = new EmployeeQuery("e1"); CustomerQuery cq1 = new CustomerQuery("c1"); eq1.Select(eq1, cq1.CustomerName); eq1.InnerJoin(cq1).On(eq1.EmployeeID == cq1.Manager); eq1.Where(eq1.EmployeeID == 1); EmployeeCollection collection = new EmployeeCollection(); collection.es.Connection.ConnectionString = UnitTestBase.GetFktString(collection.es.Connection); collection.Load(eq1); Assert.AreEqual(35, collection.Count); EmployeeQuery eq2 = new EmployeeQuery("e2"); CustomerQuery cq2 = new CustomerQuery("c2"); eq2.Select(eq2, cq2.CustomerName); eq2.InnerJoin(cq2).On(eq2.EmployeeID == cq2.Manager); eq2.Where(eq2.EmployeeID == 2); EmployeeCollection collection2 = new EmployeeCollection(); collection2.es.Connection.ConnectionString = UnitTestBase.GetFktString(collection2.es.Connection); collection2.Load(eq2); Assert.AreEqual(12, collection2.Count); collection.Combine(collection2); Assert.AreEqual(47, collection.Count); foreach (Employee emp in collection) { string custName = CustomerMetadata.ColumnNames.CustomerName; Assert.IsTrue(emp.GetColumn(custName).ToString().Length > 0); } }
public void JoinWithPaging() { EmployeeCollection collection = new EmployeeCollection(); collection.es.Connection.ConnectionString = UnitTestBase.GetFktString(collection.es.Connection); switch (collection.es.Connection.ProviderSignature.DataProviderName) { case "EntitySpaces.MSAccessProvider": case "EntitySpaces.SqlServerCeProvider": case "EntitySpaces.VistaDBProvider": case "EntitySpaces.VistaDB4Provider": Assert.Ignore("Not supported"); break; default: EmployeeQuery emp = new EmployeeQuery("e"); EmployeeTerritoryQuery empTerr = new EmployeeTerritoryQuery("et"); TerritoryQuery terr = new TerritoryQuery("t"); TerritoryExQuery terrEx = new TerritoryExQuery("tx"); emp.Select(emp, terr.Description.As("Territory"), terrEx.Notes); emp.InnerJoin(empTerr).On(empTerr.TerrID == emp.EmployeeID); emp.InnerJoin(terr).On(terr.TerritoryID == empTerr.TerrID); emp.InnerJoin(terrEx).On(terrEx.TerritoryID == terr.TerritoryID); emp.Where(terrEx.Notes.IsNotNull()); emp.OrderBy(emp.FirstName.Ascending); emp.es.PageNumber = 1; emp.es.PageSize = 20; Assert.IsTrue(collection.Load(emp)); Assert.AreEqual(2, collection.Count); break; } }
public void WhereExistsFalse() { EmployeeCollection collection = new EmployeeCollection(); collection.es.Connection.ConnectionString = UnitTestBase.GetFktString(collection.es.Connection); // EmployeeID is required and will never be NULL EmployeeQuery sq = new EmployeeQuery("s"); sq.es.Distinct = true; sq.Select(sq.EmployeeID); sq.Where(sq.EmployeeID.IsNull()); // This should produce no results as the // inner query does not exist. EmployeeQuery eq = new EmployeeQuery("e"); eq.Select(eq.EmployeeID, eq.Supervisor); eq.Where(eq.Exists(sq)); Assert.IsFalse(collection.Load(eq)); }
public void NestedZeroToMany() { // The main Employee query EmployeeQuery eq1 = new EmployeeQuery("e"); eq1.Where(eq1.EmployeeID < 4); eq1.OrderBy(eq1.EmployeeID.Ascending); // The Order Collection OrderQuery oq1 = eq1.Prefetch <OrderQuery>(Employee.Prefetch_OrderCollectionByEmployeeID); EmployeeQuery eq2 = oq1.GetQuery <EmployeeQuery>(); oq1.Where(eq2.EmployeeID < 4 && oq1.PlacedBy < 3); // Pre-test the Order query OrderCollection oColl = new OrderCollection(); oColl.es.Connection.Name = "ForeignKeyTest"; oColl.Load(oq1); Assert.AreEqual(5, oColl.Count, "Order pre-test"); // The OrderItem Collection OrderItemQuery oiq1 = eq1.Prefetch <OrderItemQuery>(Employee.Prefetch_OrderCollectionByEmployeeID, Order.Prefetch_OrderItemCollectionByOrderID); EmployeeQuery eq3 = oiq1.GetQuery <EmployeeQuery>(); OrderQuery oq2 = oiq1.GetQuery <OrderQuery>(); oiq1.Where(eq3.EmployeeID < 4 && oq2.PlacedBy < 3 && oiq1.Quantity < 100); // Pre-test the OrderItem query OrderItemCollection oiColl = new OrderItemCollection(); oiColl.es.Connection.Name = "ForeignKeyTest"; oiColl.Load(oiq1); Assert.AreEqual(4, oiColl.Count, "OrderItem pre-test"); // Will Prefetch the Order and OrderItems queries EmployeeCollection coll = new EmployeeCollection(); coll.es.Connection.Name = "ForeignKeyTest"; //coll.es.IsLazyLoadDisabled = true; coll.Load(eq1); foreach (Employee emp in coll) { emp.es.IsLazyLoadDisabled = true; switch (emp.EmployeeID.Value) { case 1: Assert.AreEqual(1, emp.EmployeeID.Value); Assert.AreEqual(0, emp.OrderCollectionByEmployeeID.Count); break; case 2: Assert.AreEqual(2, emp.EmployeeID.Value); Assert.AreEqual(2, emp.OrderCollectionByEmployeeID.Count); foreach (Order o in emp.OrderCollectionByEmployeeID) { Assert.Less(0, o.OrderItemCollectionByOrderID.Count); } break; case 3: Assert.AreEqual(3, emp.EmployeeID.Value); Assert.AreEqual(3, emp.OrderCollectionByEmployeeID.Count); foreach (Order o in emp.OrderCollectionByEmployeeID) { Assert.AreEqual(0, o.OrderItemCollectionByOrderID.Count); } break; default: Assert.Fail("Only employees 1, 2, and 3 should be loaded."); break; } } }
public void NestedZeroToManyEntity() { //The main Employee query EmployeeQuery eq1 = new EmployeeQuery(); eq1.Where(eq1.EmployeeID == 1); // Prefetch Employee Customers by Manager CustomerQuery cq1 = eq1.Prefetch <CustomerQuery>( Employee.Prefetch_CustomerCollectionByManager); EmployeeQuery eq2 = cq1.GetQuery <EmployeeQuery>(); cq1.Where(eq2.EmployeeID == 1); // Prefetch Employee Customers Orders (composite FK) OrderQuery oq1 = eq1.Prefetch <OrderQuery>( Employee.Prefetch_CustomerCollectionByManager, Customer.Prefetch_OrderCollectionByCustID); EmployeeQuery eq3 = oq1.GetQuery <EmployeeQuery>(); oq1.Where(eq3.EmployeeID == 1); // Prefetch Employee Customers Orders OrderItems OrderItemQuery oiq1 = eq1.Prefetch <OrderItemQuery>( Employee.Prefetch_CustomerCollectionByManager, Customer.Prefetch_OrderCollectionByCustID, Order.Prefetch_OrderItemCollectionByOrderID); EmployeeQuery eq4 = oiq1.GetQuery <EmployeeQuery>(); oiq1.Where(eq4.EmployeeID == 1); // Prefetch Employee Customers by StaffAssigned CustomerQuery cq2 = eq1.Prefetch <CustomerQuery>( Employee.Prefetch_CustomerCollectionByStaffAssigned); EmployeeQuery eq5 = cq2.GetQuery <EmployeeQuery>(); cq2.Where(eq5.EmployeeID == 1); Employee emp = new Employee(); emp.es.Connection.Name = "ForeignKeyTest"; emp.Load(eq1); Assert.AreEqual(1, emp.EmployeeID.Value); Assert.AreEqual(35, emp.CustomerCollectionByManager.Count); Assert.AreEqual(2, emp.CustomerCollectionByStaffAssigned.Count); Assert.AreEqual(0, emp.EmployeeCollectionBySupervisor.Count, "These 2 are not Prefetched"); foreach (Customer c in emp.CustomerCollectionByManager) { if (c.CustomerID == "01001" && c.CustomerSub == "001") { Assert.AreEqual(3, c.OrderCollectionByCustID.Count); foreach (Order o in c.OrderCollectionByCustID) { if (o.OrderID == 1) { Assert.AreEqual(3, o.OrderItemCollectionByOrderID.Count); } } } } }