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There is a subtle bug that you can encounter when using Entity Framework on a database where updates can happen out of band. For example, the situation I discovered this issue involves a replicated SQL database, with Entity Framework running in “read only” mode against the replication subscriber databases. The data is changed in the […]
If you are using Entity Framework and you want to test your application without the real database, the typical technique employed is to write a repository or query provider that you can substitute with a stub during the test. Sometimes, though, you are better off pushing things a couple of levels deeper. This is where […]
If you have ever wanted to look inside an IQueryable in Entity Framework to see what query will be run, you’ll know that it is properly squirrelled away in there. On the whole, that’s a good thing because you shouldn’t care about it. Despite this, there are sometimes occasions where “never” doesn’t mean “never”. I […]
This is something that can take a little figuring out – using Rhino Mocks to mock a DbContext and the associated IDBSets. Because of this, I created a little generic method that helps a lot… private static IDbSet<T> GetDbSetTestDouble<T>(IList<T> data) where T : class { IQueryable<T> queryable = data.AsQueryable(); IDbSet<T> dbSet = MockRepository.GenerateMock<IDbSet<T>, IQueryable>(); dbSet.Stub(m […]
