gistfile1.txt

public static DbSet<T> AsFakeDbSet<T>(this IEnumerable<T> data) where T : class
{
  var queryAble = data.AsQueryable();

  var fakeDbSet = A.Fake<DbSet<T>>(builder =>
  builder.Implements(typeof (IQueryable<T>)));

  A.CallTo(() => ((IQueryable<T>) fakeDbSet).Provider).Returns(queryAble.Provider);
  A.CallTo(() => ((IQueryable<T>) fakeDbSet).Expression).Returns(queryAble.Expression);
  A.CallTo(() => ((IQueryable<T>) fakeDbSet).ElementType).Returns(queryAble.ElementType);
  A.CallTo(() => ((IQueryable<T>) fakeDbSet).GetEnumerator()).Returns(queryAble.GetEnumerator());

  return fakeDbSet;
}