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unit-tests, and I want to includeunit-testsfor certain parts, do you think its better to first write out theintegration testsfor the legacy code. Once that is written, then you can uncouple the tight coupling, and create functions with interfaces that can be tested? Since you have theintegration-testalready written, you can then verify at each step of refactoring, that the new version of the code still works as desired?