Hi,
I'm working on a unit test framework for a module. The module I'm
testing indirectly calls another module which is expensive to access
--- CDLLs whose functions access a database.
test_MyModule --->MyModule--->IntermediateModule---
>ExpensiveModule
I want to create a stub of ExpensiveModule and have that be accessed
by IntermediateModule instead of the real version
test_MyModule --->MyModule--->IntermediateModule---
>ExpensiveModuleStub
I tried the following in my unittest:
import ExpensiveModuleStub
sys.modules['ExpensiveModule'] = ExpensiveModuleStub # Doesn't
work
But, import statements in the IntermediateModule still access the real
ExpensiveModule, not the stub.
The examples I can find of creating and using Mock or Stub objects
seem to all follow a pattern where the fake objects are passed in as
arguments to the code being tested. For example, see the "Example
Usage" section here: http://python-mock.sourceforge.net. But that
doesn't work in my case as the module I'm testing doesn't directly use
the module that I want to replace.
Can anybody suggest something?
Thanks,
Scott
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