I have the following scenario in testing a large, distributed system via end-to-end tests:
Class A < Minitest::Spec
before do
# stuff
setup_runtime_environment
end
end
Class B < Class A
before do
# stuff
end
end
Class C < Class B
before do
# stuff
end
end
Some tests only inherit from Class A - it is the most general and includes things which are relevant to testing the entire system.
Class B is more specific - it includes things which are relevant to a large group of tests, but still needs to be setup by the setup_runtime_environment method in Class A
Class C is the most specific - it includes things which are relevant only to a small group of tests, but still needs to be setup by the setup_runtime_environment method in Class A
The problem is that the runtime environment, for various test purposes, needs to be configured differently when running 'overall' tests vs. 'general' tests vs. 'specific' tests, and it needs to be configured before it is initialized.
So I could add the setup_runtime_environment method to the end of each before block. But more ideal would be a way to run that method immediately before the specs are run. A 'just_before' block. Does anyone know of a way to do this?
To clarify:
If I'm running an 'overall' spec - one that inherits only from Class A, the stack looks something like this, assuming 'A' is the before block in Class A and 's' is setup_runtime_environment:
A -> s -> running of specs
Likewise if I'm running a specific spec - one that inherits from Class C, the stack would look something like this:
A -> s -> B -> C -> running of specs
I want 's' to be called at the very end of any chain:
A -> s -> running of specs
or
A -> B -> s -> running of specs
or
A -> B -> C -> s -> running of specs
which is what I mean by 'just before' - as in just before the specs are run.
You are limited because of the behavior of the spec DSL. If you want to really control when your setup code is run along with the inherited setup, you should use the test-style setup and super.
Class A < Minitest::Spec
def setup
# do stuff
setup_runtime_environment
end
end
Class B < Class A
def setup
super
# do stuff after setup_runtime_environment
end
end
Class C < Class B
def setup
# do stuff before setup_runtime_environment
super
end
end
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