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How I’m testing seed data generation
When I create a new Rails project I like to have a robust seeds that can be used to quickly bootstrap development, testing and staging environments to interact with the application. I think this is critical for development speed. If a developer creates a feature to, for example, connect two records together, you just want…
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Data driven tests
I’m not sure if anybody uses the terminology “data driven test” but if you explain what it is, experienced people will tel you that they are bad. Data driven tests are tests with the same code repeating over many different pieces of data. Let’s show an example. For my startup project Keep on Posting, I…
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Better assert difference?
Rails come with some awesome assertion methods for writing tests: assert_difference(“User.count”, +1) do create_a_user end That asserts that the count of user was incremented by one. The plus sign is not needed, that’s just an integer, I add it to make things clear. You can mix several of this expressions into one assert_difference: assert_difference([“User.count”, “Profile.count”],…
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The sad truth about testing web applications
There are many ways to test a web application. In the lowest level, we have unit tests; in the highest levels we have HTTP test, those that use the HTTP protocol to talk to running instance of your application (maybe running it on demand, maybe expecting it to be running on a testing server). There…
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Quick and dirty continuous testing with Ruby on Rails
I like the idea of continuous testing: seeing that you broke it, the moment you broke it and the same for fixing. There are some tools to do it, but since they are not packaged, yet, for my operating system of choice I went through the quick and dirty route: watch -n 5 rake test…