C#存储过程方法的单元测试
我使用企业库来执行数据操作,而不是实体框架 下面是我的示例BL方法,用于更新个人文化。 我不知道如何为这类方法编写单元测试C#存储过程方法的单元测试,c#,unit-testing,stored-procedures,C#,Unit Testing,Stored Procedures,我使用企业库来执行数据操作,而不是实体框架 下面是我的示例BL方法,用于更新个人文化。 我不知道如何为这类方法编写单元测试 public static Culture UpdatePersonCulture(Guid userId, Culture culture) { try { if (userId == Guid.Empty) throw new exception("User id should not be empty");
public static Culture UpdatePersonCulture(Guid userId, Culture culture)
{
try
{
if (userId == Guid.Empty)
throw new exception("User id should not be empty");
DatabaseProviderFactory factory = new DatabaseProviderFactory();
Database database = factory.CreateDefault();
using (DbConnection dbConnection = database.CreateConnection())
{
if (dbConnection.State == ConnectionState.Closed)
dbConnection.Open();
DbCommand dbCommand = database.GetStoredProcCommand("usp_UpdatePersonCulture");
database.DiscoverParameters(dbCommand);
dbCommand.Parameters["@userId"].Value = userId;
dbCommand.Parameters["@cultureId"].Value = culture.Id;
DataSet dataSet = database.ExecuteDataSet(dbCommand);
return BLDataPopulation.PopulateCultures(dataSet.Tables[0]).FirstOrDefault();
}
}
catch (Exception exception)
{
throw BLLogger.Log(exception);
}
}
单元测试意味着给定一个输入,我的代码将以已知的行为运行,并生成一个已知的预先输出。它应该执行得很快,因为它经常执行(甚至可以在代码更改时执行,如)。单元测试范围应该是一个类
是在更高范围内进行测试的测试。您可以测试几个类、程序的一部分,甚至不同的程序是否能够很好地协同工作。然而,这些测试的稳定性(因为它可能依赖于可能不时失败的外部组件),“工作良好”的定义(充其量只能说是模糊的)以及此类测试的维护成本,使得集成测试的附加值非常低。事实上,我经常看到没有任何测试的项目,甚至集成测试都因为维护成本而退役
但是,您可以将不稳定的代码限制到最小值:
- 将接口与实现分离:将外部资源(如文件I/O或数据库)访问隔离在接口后面,以隐藏实现的复杂性
- 避免使用静态代码,因为不可能对静态代码进行单元测试。实现中嵌入了静态类。如果静态代码调用外部资源,则无法控制输入和输出,也无法测试结果
- 学会重构:如果你具备重构的技能,遗留代码可以很容易地处理。隔离一小段代码,为其编写单元测试,并用更健壮的代码替换它
- 可以使新编写的代码从一开始就可测试。这是一个过程,包括在编写类的实现之前编写对给定类的期望
- :有时,当您的篮子里只有客户请求时,您无法轻松地转到单元测试所需的最低级别。您可以使用诸如构建需求语法并将其转换为测试之类的工具
public class ClassToTest : IInterfaceToTest
{
private readonly IBLLogger _logger;
private readonly IBLDataPopulation _blDataPopulation;
private readonly IDatabase _database;
public ClassToTest(IBLLogger logger, IBLDataPopulation blDataPopulation, IDatabase database)
{
_logger = logger;
_blDataPopulation = blDataPopulation;
_database = database;
}
// this cannot be static if you want
// to unit test the classes depending on this one.
public Culture UpdatePersonCulture(Guid userId, Culture culture)
{
try
{
if (userId == Guid.Empty)
throw new Exception("User id should not be empty");
var dataSet = _database.ProvideCultureMappings(userId, culture);
return _blDataPopulation.PopulateCultures(dataSet.Tables[0]).FirstOrDefault();
}
catch (Exception exception)
{
throw _logger.Log(exception);
}
}
}
我添加的接口:
public interface IDatabase
{
DataSet ProvideCultureMappings(Guid userId, Culture culture);
}
public interface IBLLogger
{
Exception Log(Exception exception);
}
public interface IBLDataPopulation
{
IEnumerable<Culture> PopulateCultures(DataTable dataTable);
}
你不能。编写一个集成测试,这在很大程度上取决于您试图进行的单元测试。您的方法是否“调用某些更新并返回区域性”,或者实际的存储过程是否正常工作?谢谢你们两位。。bl将调用特定的存储过程。大部分的逻辑将在SP。然后我应该去集成测试。谢谢。我跟你走。
[TestFixture]
public class DatabaseUnitTest
{
[Test]
public void Test()
{
var logger = new Mock<IBLLogger>(MockBehavior.Strict);
var blDataPopulation = new Mock<IBLDataPopulation>(MockBehavior.Strict);
var database = new Mock<IDatabase>(MockBehavior.Strict);
var toTest = new ClassToTest(logger.Object, blDataPopulation.Object, database.Object);
var userId = Guid.NewGuid();
var culture = new Culture{Id = "MyId"};
var dataSet = new DataSet();
var table = new DataTable();
dataSet.Tables.Add(table);
database.Setup(x => x.ProvideCultureMappings(userId, culture)).Returns(dataSet);
var cultureList = new List<Culture> {culture, new Culture {Id = "AnotherCulture"}};
blDataPopulation.Setup(x => x.PopulateCultures(table)).Returns(cultureList);
var result = toTest.UpdatePersonCulture(userId, culture);
Assert.AreEqual(result.Id, culture.Id);
}
}
public class Database : IDatabase
{
public DataSet ProvideCultureMappings(Guid userId, Culture culture)
{
DatabaseProviderFactory factory = new DatabaseProviderFactory();
Database database = factory.CreateDefault();
using (DbConnection dbConnection = database.CreateConnection())
{
if (dbConnection.State == ConnectionState.Closed)
dbConnection.Open();
DbCommand dbCommand = database.GetStoredProcCommand("usp_UpdatePersonCulture");
database.DiscoverParameters(dbCommand);
dbCommand.Parameters["@userId"].Value = userId;
dbCommand.Parameters["@cultureId"].Value = culture.Id;
DataSet dataSet = database.ExecuteDataSet(dbCommand);
return dataSet;
}
}
private DataSet ExecuteDataSet(DbCommand dbCommand)
{
throw new NotImplementedException();
}
private void DiscoverParameters(DbCommand dbCommand)
{
throw new NotImplementedException();
}
private DbCommand GetStoredProcCommand(string uspUpdatepersonculture)
{
throw new NotImplementedException();
}
private DbConnection CreateConnection()
{
throw new NotImplementedException();
}
}