C# 实体框架上下文6.1.3未刷新/销毁?
在这个单元测试中,我将验证内容字节列的MD5是否正确计算、持久化和获取 但是,实体框架(6.1.3)上下文似乎没有被刷新/销毁,因为在原始SQL更新之后,该更新明显生效,但在使用新上下文获取行时没有显示C# 实体框架上下文6.1.3未刷新/销毁?,c#,entity-framework,unit-testing,C#,Entity Framework,Unit Testing,在这个单元测试中,我将验证内容字节列的MD5是否正确计算、持久化和获取 但是,实体框架(6.1.3)上下文似乎没有被刷新/销毁,因为在原始SQL更新之后,该更新明显生效,但在使用新上下文获取行时没有显示 namespace UnitTests { [TestClass] public class TestDataPacketServiceDebug { [TestInitialize] public void Setup()
namespace UnitTests
{
[TestClass]
public class TestDataPacketServiceDebug
{
[TestInitialize]
public void Setup()
{
CommonMethods.ResetDatabase();
try
{
CommonMethods.ResetDataPacketDirectory();
}
catch (DirectoryNotFoundException)
{
}
}
[TestCategory("DataPacketService"), TestMethod]
public void TestGetLocalFilePathDebug()
{
// Persist a DataPacket
int dataPacketId;
using (var testDBContext = new TestDBContext())
{
DataPacket dataPacket = new DataPacket
{
Content = File.ReadAllBytes(@"Resources\SampleResources.zip"),
Description = "DataPacketSample consist of some random found .DLL files on disk",
Name = "SampleResources",
Version = "1"
};
testDBContext.DataPackets.Add(dataPacket);
testDBContext.SaveChanges();
dataPacketId = dataPacket.DataPacketId;
}
// Verify file path extraction
using (var testDBContext = new TestDBContext())
{
DataPacket dataPacket = DataPacketService.GetByNameAndVersion("SampleResources", "1",
testDBContext);
string extractedFilePath = DataPacketService.GetLocalFilePath(testDBContext,
dataPacket, "EntityFramework.dll");
string validDestinationPath = String.Format(@"{0}\DataPackets\{1}_v{2}\EntityFramework.dll",
AppDomain.CurrentDomain.BaseDirectory, dataPacket.Name, dataPacket.Version);
Assert.AreEqual(validDestinationPath, extractedFilePath);
if (File.Exists(extractedFilePath) == false)
{
Assert.Fail("SampleResources was not extracted correctly");
}
}
// When setting a breakpoint here and take a look with external SQL Browser
// (e.g. Microsoft SQL Server Management Studio), following is in order:
// Note! Not all columns are shown
// -----------------------------------------------------------------------------------------------
// DataPacketId | Name | RowVersion | Content | MD5 | Version
// 1 | SampleResources | NULL | 0x504B03... | 2zSV8IChaiyf0UfnezDHKg== | 1
// Manually modify MD5 field in database for MD5 verification
using (var testDBContext = new TestDBContext())
{
string sqlUpdate = String.Format("UPDATE dbo.DataPackets SET MD5 = 'another_MD5' WHERE DataPacketId = {0}",
dataPacketId);
testDBContext.Database.ExecuteSqlCommand(sqlUpdate);
}
// When setting a breakpoint here we can clearly see that the row has been changed:
// Note! Not all columns are shown
// ----------------------------------------------------------------------------------
// DataPacketId | Name | RowVersion | Content | MD5 | Version
// 1 | SampleResources | NULL | 0x504B03... | another_MD5 | 1
// Verify MD5
using (var testDBContext = new TestDBContext())
{
// Fetch dataPacket with modified MD5
DataPacket dataPacket = DataPacketService.GetByNameAndVersion("SampleResources", "1", testDBContext);
// Verify that the raw SQL command has been successful:
Assert.AreEqual("another_MD5", dataPacket.MD5);
// BANG!!!!!!!!!!!!!!
// Result Message: Assert.AreEqual failed. Expected:< another_MD5 >.Actual:< 2zSV8IChaiyf0UfnezDHKg== >.
}
}
}
}
命名空间单元测试
{
[测试类]
公共类TestDataPacketServiceDebug
{
[测试初始化]
公共作废设置()
{
CommonMethods.ResetDatabase();
尝试
{
CommonMethods.ResetDataPacketDirectory();
}
捕获(DirectoryNotFoundException)
{
}
}
[TestCategory(“DataPacketService”),TestMethod]
public void TestGetLocalFilePathDebug()
{
//保存数据包
int-dataPacketId;
使用(var testDBContext=newtestdbcontext())
{
数据包数据包=新数据包
{
Content=File.ReadAllBytes(@“Resources\SampleResources.zip”),
Description=“DataPacketSample由磁盘上的一些随机找到的.DLL文件组成”,
Name=“SampleResources”,
Version=“1”
};
testDBContext.DataPackets.Add(dataPacket);
testDBContext.SaveChanges();
dataPacketId=dataPacket.dataPacketId;
}
//验证文件路径提取
使用(var testDBContext=newtestdbcontext())
{
DatapacketDatapacketService.GetByNameAndVersion(“SampleResources”,“1”,
testDBContext);
string extractedFilePath=DataPacketService.GetLocalFilePath(testDBContext,
数据包,“EntityFramework.dll”);
string validDestinationPath=string.Format(@“{0}\DataPackets\{1}\u v{2}\EntityFramework.dll”,
AppDomain.CurrentDomain.BaseDirectory,dataPacket.Name,dataPacket.Version);
AreEqual(validDestinationPath、extractedFilePath);
if(File.Exists(extractedFilePath)==false)
{
Assert.Fail(“SampleResources未正确提取”);
}
}
//在此处设置断点时,请使用外部SQL浏览器查看
//(例如Microsoft SQL Server Management Studio),顺序如下:
//注意!并非所有列都显示
// -----------------------------------------------------------------------------------------------
//DataPacketId |名称|行版本|内容| MD5 |版本
//1 | SampleResources | NULL | 0x504B03…| 2zSV8IChaiyf0UfnezDHKg==| 1
//手动修改数据库中的MD5字段以进行MD5验证
使用(var testDBContext=newtestdbcontext())
{
string sqlUpdate=string.Format(“UPDATE dbo.DataPackets SET MD5='other_MD5',其中DataPacketId={0}”,
数据包ID);
testDBContext.Database.ExecuteSqlCommand(sqlUpdate);
}
//在此处设置断点时,我们可以清楚地看到行已更改:
//注意!并非所有列都显示
// ----------------------------------------------------------------------------------
//DataPacketId |名称|行版本|内容| MD5 |版本
//1 | SampleResources | NULL | 0x504B03…|另一个| MD5 | 1
//验证MD5
使用(var testDBContext=newtestdbcontext())
{
//使用修改的MD5获取数据包
datapacketdatapacket=DataPacketService.GetByNameAndVersion(“SampleResources”,“1”,testDBContext);
//验证原始SQL命令是否已成功执行:
AreEqual(“另一个_MD5”,dataPacket.MD5);
//砰!!!!!!!!!!!!!!
//结果消息:Assert.AreEqual失败。应为:。实际为:<2zSV8IChaiyf0UfnezDHKg=>。
}
}
}
}
实体:
public class DataPacket
{
/// <summary>
/// Identifier
/// </summary>
public int DataPacketId { get; set; }
/// <summary>
/// Concurrency Token
/// </summary>
public byte[] RowVersion { get; set; }
/// <summary>
/// Name
/// </summary>
public string Name { get; set; }
/// <summary>
/// Description of data packet
/// </summary>
public string Description { get; set; }
/// <summary>
/// Version of data packet
/// </summary>
public string Version { get; set; }
/// <summary>
/// MD5 of the data packet (i.e. MD5 of Content byte array)
/// </summary>
public string MD5 { get; private set; }
private byte[] content;
/// <summary>
/// Byte content of the data packet (i.e.
/// </summary>
public byte[] Content
{
get { return content; }
set
{
content = value;
UpdateMD5();
}
}
/// <summary>
/// TestCase navigation DataPacket <== One-To-Many ==> TestCases
/// </summary>
public ICollection<TestCase> TestCases { get; set; } // DataPacket <== One-To-Many ==> TestCases
/// <summary>
/// Update MD5 checksum depending on content
/// </summary>
private void UpdateMD5()
{
if (content != null)
{
this.MD5 = GetMD5ForBytes(content);
}
}
/// <summary>
/// Get MD5 checksum for content byte array
/// </summary>
/// <param name="content">Content byte array</param>
/// <returns>MD5 checksum</returns>
public static String GetMD5ForBytes(byte[] content)
{
if (content != null)
{
System.Security.Cryptography.MD5 md5Object = System.Security.Cryptography.MD5.Create();
return System.BitConverter.ToString(md5Object.ComputeHash(content)).Replace("-", "");
}
return null;
}
}
公共类数据包
{
///
///标识符
///
public int DataPacketId{get;set;}
///
///并发令牌
///
公共字节[]行版本{get;set;}
///
///名字
///
公共字符串名称{get;set;}
///
///数据包描述
///
公共字符串说明{get;set;}
///
///数据包的版本
///
公共字符串版本{get;set;}
///
///数据包的MD5(即内容字节数组的MD5)
///
公共字符串MD5{get;private set;}
私有字节[]内容;
///
///数据包的字节内容(即。
///
公共字节[]内容
{
获取{返回内容;}
设置
{
内容=价值;
UpdateMD5();
}
}
///
///测试用例导航数据包测试用例
///
公共ICollection测试用例{get;set;}//数据包测试用例
///
///根据内容更新MD5校验和
///
私有void UpdateMD5()
{
如果(内容!=null)
{
this.MD5=GetMD5ForBytes(content);
}
}
///
///获取内容字节数组的MD5校验和
///
///内容字节数组
///MD5校验和
公共静态字符串GetMD5ForBytes(字节[]内容)
{
如果(内容!=null)
{
System.Security.Cryptography.MD5 md5Object=System.Security.Cryptography.MD5.Create();
返回System.BitConverter.ToString(md5Object.Comput
public static DataPacket GetByNameAndVersion(string name, string version, TestDBContext testDBContext)
{
IQueryable<DataPacket> query = testDBContext.Set<DataPacket>();
query = query.Where(t => t.Name == name).Where(t => t.Version == version);
return query.Single();
}
/// <summary>
/// MD5 of the data packet (i.e. MD5 of Content byte array)
/// </summary>
public string MD5 { get; private set; }
private byte[] content;
/// <summary>
/// Byte content of the data packet (i.e.
/// </summary>
public byte[] Content
{
get { return content; }
set
{
content = value;
UpdateMD5();
}
}