(Note from the future: I think this may have been misguided. I recommend making the hostnames of your external dependencies configurable so that you don't have to do daft things like this. But it was fun to make and I learnt from making it, so #noregrets.)
I want to test a RESTful API, but...
-
the functionality I want to verify requires that I stub the responses of other servers which are used in the course of handling my request.
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I want to make assertions on the requests that the API sends to other servers
Mess with local DNS configuration to enable developers to control the interactions of the fixture with its external runtime dependencies.
- (+) I can run integration tests against endpoints that I would otherwise only be able to exercise in an end-to-end test.
- (-) I need root permissions to mess with /etc/hosts
- (+) Enables more automated tests to run locally on developer machines
- (-) Tests require complicated set up
- Open 3 terminal tabs
- In the first, run
./run-dns-mocks - In the second, run
./run-fixture - In the last, run
./run-tests(I'm using the assertpy external python library)
The tests should pass and you should see some logging from the two other tabs.