public void InsertRange_AddsModelsToDbSet()
{
IEnumerable <TestModel> models = new[] { ObjectsFactory.CreateTestModel(1), ObjectsFactory.CreateTestModel(2) };
TestingContext testingContext = Substitute.For <TestingContext>();
testingContext.When(sub => sub.AddRange(models)).DoNotCallBase();
unitOfWork.Dispose();
unitOfWork = new UnitOfWork(testingContext);
unitOfWork.InsertRange(models);
testingContext.Received().AddRange(models);
}