Don't Mock 3rd Party Code
1,181Mocking can be a valuable tool in software testing, but mocking 3rd party libraries is nearly always a bad place to start. Dave Farley, author of books on Continuous Delivery and Software Engineering, demonstrates mocking 3rd party code with examples of code, tests and use of mocking, and how all are improved with good design choices.
If the code we are testing interacts with something else, then we probably want to know if this interaction happened, but it can be risky to use tools to generate mocks for third party code. People complain that it is complicated and results in tests being tightly coupled to the solution. This is not necessarily the fault of mocking though, it may be because the code is rubbish!
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🔗 LINKS
xUnit Patterns: http://xunitpatterns.com/Mocks,%20Fakes,%20Stubs%20and%20Dummies.html
“Tell Don’t Ask”, Martin Fowler: https://martinfowler.com/bliki/TellDontAsk.html
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