使用 NUnit 和 NSubstitute 对通用存储库进行单元测试
Unit test of generic repository using NUnit and NSubstitute
如何使用 NUNit 和 NSubstitute 执行单元测试,我想测试插入一个伪造的 "GamaItem" 对象,并验证它是否有效,以及是否已触发 SaveChanges。
我是单元测试的新手,我不确定如何伪造 dbContext 对象。
提前致谢。
工作单元:
public class UnitOfWork: IUnitOfWork, IDisposable
{
private SRColorContext context = new SRColorContext();
private GenericEntityRepository<HairColorType> hairColorTypeRepository;
private GenericEntityRepository<GamaItem> gamaItemRepository;
public UnitOfWork()
{
if (context == null)
{
context = new SRColorContext();
}
}
public UnitOfWork(SRColorContext context)
{
this.context = context;
}
public GenericEntityRepository<HairColorType> HairColorTypeRepository
{
get
{
if (this.hairColorTypeRepository == null)
{
this.hairColorTypeRepository = new GenericEntityRepository<HairColorType>(context);
}
return hairColorTypeRepository;
}
}
public GenericEntityRepository<GamaItem> GamaItemRepository
{
get
{
if (this.gamaItemRepository == null)
{
this.gamaItemRepository = new GenericEntityRepository<GamaItem>(context);
}
return gamaItemRepository;
}
}
public void Save()
{
context.SaveChanges();
}
private bool disposed = false;
protected virtual void Dispose(bool disposing)
{
if (!this.disposed)
{
if (disposing)
{
context.Dispose();
}
}
this.disposed = true;
}
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
}
通用存储库:
public class GenericEntityRepository<TEntity> where TEntity : class
{
internal SRColorContext context;
internal DbSet<TEntity> dbSet;
public GenericEntityRepository(SRColorContext context)
{
this.context = context;
this.dbSet = context.Set<TEntity>();
}
public virtual IEnumerable<TEntity> Get(
Expression<Func<TEntity,bool>> filter = null,
Func<IQueryable<TEntity>, IOrderedQueryable<TEntity>> orderBy = null,
string includeProperties = "")
{
IQueryable<TEntity> query = dbSet;
if(filter != null)
{
query = query.Where(filter);
}
foreach (var includeProperty in includeProperties.Split
(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries))
{
query.Include(includeProperty);
}
if (orderBy != null)
{
return orderBy(query).ToList();
}
else
{
return query.ToList();
}
}
public virtual TEntity GetById(object id)
{
return dbSet.Find(id);
}
public virtual void Insert(TEntity entity)
{
dbSet.Add(entity);
}
public virtual void Delete(object id)
{
TEntity entityToDelete = dbSet.Find(id);
Delete(entityToDelete);
}
public virtual void Delete(TEntity entityToDelete)
{
if (context.Entry(entityToDelete).State == EntityState.Detached)
{
dbSet.Attach(entityToDelete);
}
dbSet.Remove(entityToDelete);
}
public virtual void Update(TEntity entityToUpdate)
{
dbSet.Attach(entityToUpdate);
context.Entry(entityToUpdate).State = EntityState.Modified;
}
}
我认为你应该伪造上下文对象以避免调用数据库而不是实体(除非你不能简单地创建一个)
如果您想为 UnitOfWork class 编写单元测试并且您使用的是 NSubtitute(或任何其他 .NET OSS Mocking 框架),则必须使用依赖注入并用假实例替换上下文实例。
您可能还需要包装上下文 class - 如果它是密封的或使用的方法不是虚拟的。
如何使用 NUNit 和 NSubstitute 执行单元测试,我想测试插入一个伪造的 "GamaItem" 对象,并验证它是否有效,以及是否已触发 SaveChanges。
我是单元测试的新手,我不确定如何伪造 dbContext 对象。
提前致谢。
工作单元:
public class UnitOfWork: IUnitOfWork, IDisposable
{
private SRColorContext context = new SRColorContext();
private GenericEntityRepository<HairColorType> hairColorTypeRepository;
private GenericEntityRepository<GamaItem> gamaItemRepository;
public UnitOfWork()
{
if (context == null)
{
context = new SRColorContext();
}
}
public UnitOfWork(SRColorContext context)
{
this.context = context;
}
public GenericEntityRepository<HairColorType> HairColorTypeRepository
{
get
{
if (this.hairColorTypeRepository == null)
{
this.hairColorTypeRepository = new GenericEntityRepository<HairColorType>(context);
}
return hairColorTypeRepository;
}
}
public GenericEntityRepository<GamaItem> GamaItemRepository
{
get
{
if (this.gamaItemRepository == null)
{
this.gamaItemRepository = new GenericEntityRepository<GamaItem>(context);
}
return gamaItemRepository;
}
}
public void Save()
{
context.SaveChanges();
}
private bool disposed = false;
protected virtual void Dispose(bool disposing)
{
if (!this.disposed)
{
if (disposing)
{
context.Dispose();
}
}
this.disposed = true;
}
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
}
通用存储库:
public class GenericEntityRepository<TEntity> where TEntity : class
{
internal SRColorContext context;
internal DbSet<TEntity> dbSet;
public GenericEntityRepository(SRColorContext context)
{
this.context = context;
this.dbSet = context.Set<TEntity>();
}
public virtual IEnumerable<TEntity> Get(
Expression<Func<TEntity,bool>> filter = null,
Func<IQueryable<TEntity>, IOrderedQueryable<TEntity>> orderBy = null,
string includeProperties = "")
{
IQueryable<TEntity> query = dbSet;
if(filter != null)
{
query = query.Where(filter);
}
foreach (var includeProperty in includeProperties.Split
(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries))
{
query.Include(includeProperty);
}
if (orderBy != null)
{
return orderBy(query).ToList();
}
else
{
return query.ToList();
}
}
public virtual TEntity GetById(object id)
{
return dbSet.Find(id);
}
public virtual void Insert(TEntity entity)
{
dbSet.Add(entity);
}
public virtual void Delete(object id)
{
TEntity entityToDelete = dbSet.Find(id);
Delete(entityToDelete);
}
public virtual void Delete(TEntity entityToDelete)
{
if (context.Entry(entityToDelete).State == EntityState.Detached)
{
dbSet.Attach(entityToDelete);
}
dbSet.Remove(entityToDelete);
}
public virtual void Update(TEntity entityToUpdate)
{
dbSet.Attach(entityToUpdate);
context.Entry(entityToUpdate).State = EntityState.Modified;
}
}
我认为你应该伪造上下文对象以避免调用数据库而不是实体(除非你不能简单地创建一个)
如果您想为 UnitOfWork class 编写单元测试并且您使用的是 NSubtitute(或任何其他 .NET OSS Mocking 框架),则必须使用依赖注入并用假实例替换上下文实例。
您可能还需要包装上下文 class - 如果它是密封的或使用的方法不是虚拟的。