public void PO()
{
//1. 创建PO对象
Customer c = new Customer
{
CustomerID = "XX1",
CompanyName = "Company1",
ContactName = "Contact1",
City = "Seattle",
Country = "USA"
};
//2. 创建DbContext 对象
using (var db = cfg.CreateDbContext())
{
//3. 创建DbSet对象
var q = db.Set<Customer>();
//4. 删除所有以“XX”开头的CustomerID记录
q.Delete(p => p.CustomerID.StartsWith("XX"));
//5. 执行PO插入
q.Insert(c);
//6. 从数据库中查找指定CustomerID 的PO对象
var c2 = q.Get(c.CustomerID);
Assert.IsNotNull(c2);
Assert.AreNotSame(c, c2);
Assert.AreEqual(c.CustomerID, c2.CustomerID);
Assert.AreEqual(c.CompanyName, c2.CompanyName);
Assert.AreEqual(c.ContactName, c2.ContactName);
Assert.AreEqual(c.City, c2.City);
Assert.AreEqual(c.Country, c2.Country);
q.Delete(c);
}
}
public virtual void TestCompareTwoConstantEntityNestedRelationshipNegation()
{
Order exclude = new Order() { OrderID = 10702 };
Customer alfki = new Customer() { CustomerID = "ALFKI" };
var testQuery = from o in db.Orders
where o.Customer == alfki &&
o != exclude
select o;
var test = testQuery.ToList();
AssertValue(5, test.Count);
AssertValue("ALFKI", test[0].CustomerID);
}
public virtual void TestCompareEntityConstantDirectEqualRelationship()
{
Customer alfki = new Customer { CustomerID = "ALFKI" };
var testQuery = from c in db.Customers
where c == alfki
select c;
var test = testQuery.ToList();
AssertValue(1, test.Count);
AssertValue("ALFKI", test[0].CustomerID);
}
public virtual void TestCompareEntityEntityEqualRelationship()
{
Customer alfki = new Customer { CustomerID = "ALFKI" };
var testQuery = from o in db.Orders
from c in db.Customers
where o.Customer == c &&
c.CustomerID == alfki.CustomerID
select o;
var test = testQuery.ToList();
AssertValue(6, test.Count);
AssertValue("ALFKI", test[0].CustomerID);
}
public virtual void TestCompareEntityNotEqual()
{
Customer alfki = new Customer { CustomerID = "ALFKI" };
var list = db.Customers.Where(c => c != alfki);
AssertValue(90, list.Count());
}
public virtual void TestCompareEntityEqual()
{
Customer alfki = new Customer { CustomerID = "ALFKI" };
var list = db.Customers.Where(c => c == alfki).ToList();
AssertValue(1, list.Count);
AssertValue("ALFKI", list[0].CustomerID);
}
//主键是自动增一的实体插入（Oracle数据表通过序列和触发器的方式，约定的Oracle序列必须是全局的，序列名称是：NEXTID
public void InsertWithPrimaryKey_IsDbGenerated()
{
//1. 创建PO对象
Customer c = new Customer
{
CustomerID = "XX1",
CompanyName = "Company1",
ContactName = "Contact1",
City = "Seattle",
Country = "USA"
};
var order = new Order
{
CustomerID = c.CustomerID,
OrderDate = DateTime.Now,
};
//2. 创建DbContext 对象
using (var db = cfg.CreateDbContext())
{
//3. 创建DbSet对象
var cusotmers = db.Set<Customer>();
var orders = db.Set<Order>();
//4. 删除所有以“XX”开头的CustomerID记录
orders.Delete(p => p.CustomerID.StartsWith("XX"));
cusotmers.Delete(p => p.CustomerID.StartsWith("XX"));
//在订单插入前，OrderId= 0
Assert.IsTrue(order.OrderID == 0);
//5. 执行PO插入
cusotmers.Insert(c);
orders.Insert(order);
//在订单插入前，OrderId> 0
Assert.IsTrue(order.OrderID > 0);
orders.Delete(order);
cusotmers.Delete(c);
}
}
public void DeleteByPO()
{
//1. 创建PO对象
Customer c = new Customer
{
CustomerID = "XX1",
CompanyName = "Company1",
ContactName = "Contact1",
City = "Seattle",
Country = "USA"
};
//2. 创建DbContext 对象
using (var db = cfg.CreateDbContext())
{
//3. 创建DbSet对象
var cusotmers = db.Set<Customer>();
//4. 删除所有以“XX”开头的CustomerID记录
cusotmers.Delete(p => p.CustomerID.StartsWith("XX"));
//5. 执行PO插入
cusotmers.Insert(c);
//6. 删除PO对象
cusotmers.Delete(c);
}
}
public void DeleteByID_with_NameValueCollection()
{
//1. 创建PO对象
Customer c = new Customer
{
CustomerID = "XX1",
CompanyName = "Company1",
ContactName = "Contact1",
City = "Seattle",
Country = "USA"
};
//2. 创建DbContext 对象
using (var db = cfg.CreateDbContext())
{
//3. 创建DbSet对象
var cusotmers = db.Set<Customer>();
//4. 删除所有以“XX”开头的CustomerID记录
cusotmers.Delete(p => p.CustomerID.StartsWith("XX"));
//5. 执行PO插入
cusotmers.Insert(c);
//6. 通过CustomerID 进行删除
var dict = new NameValueCollection();
dict["customerId"] = c.CustomerID;
cusotmers.Delete(dict);
}
}
