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jjenkov (13) [Avatar] Offline
#1
Chapter 4 mentions that being able to change the bindings (the
configuration of the DI container) at runtime can be dangerous,
as it may lead to unforeseen type errors. But rebinding the configurations
of certain beans can also be an advantage during unit testing. If you use a
container with your production configuration during unit testing, it can be
handy to replace the factories of the beans you want to mock up. That way, when you request the unit (bean) to test from the container, it has already had the dependencies you want to mock up injected.