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Step advanced usecases #548
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olegpidsadnyi
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Looks good
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This was referenced Aug 14, 2022
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Step advanced usecases
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This PR allows for more advanced use cases of the library.
Add generic
@step(...)
decoratorWith this decorator, users can define a step function that will work for Given, When and Then steps:
Add
stacklevel
param to@given
,@when
,@then
,@step
This will let users create functions that generate steps dynamically.
For example, if you use pytest-factoryboy, you can automatically generate steps for the model fixtures like this. This can be very useful when most of the model instance variables can be defined by similar looking "given" steps.
Let's look at a concrete example; let's say you have a class
Wallet
that has some amount for each currency:Pytest-factoryboy will automatically create a model fixture for this class:
Now we can define a function
generate_wallet_steps()
that creates the steps for any wallet fixture (in our case, it will be "wallet" and "second_wallet"):This last file,
wallet_steps.py
, now contains all the step definitions for our "wallet" and "second_wallet" fixtures.We can now define a scenario like this:
and finally a test file that puts it all together and run the scenarios: