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ExUnitFixtures
A library for defining modular dependencies (fixtures) for ExUnit tests.
What are Fixtures?
Fixtures in ExUnitFixtures are just functions that are run before a test.
They can be used to setup the tests environment somehow, or provide the test
with some data that it requires. Similar in purpose to setup & setup_all but
more powerful:
- Tests explicitly list what fixtures they require, ensuring that no un-neccesary setup work is done.
- Fixtures may be shared across many tests in a project.
- Fixtures may depend on or override other fixtures, allowing core fixtures to be used & customised as each subsystem or test module requires.
Installation
- Add ex_unit_fixtures to your list of dependencies in
mix.exs:
def deps do
[{:ex_unit_fixtures, "~> 0.3.1", only: [:test]}]
end
Documentation
The documentation can be found on hexdocs.pm: http://hexdocs.pm/ex_unit_fixtures/ExUnitFixtures.html
Example
Say some of your tests required a model named my_model. You should define a
fixture fixture using deffixture, then tag your test to say it requires this
fixture:
defmodule MyTests do
use ExUnitFixtures
use ExUnit.Case
ExUnit.Case.register_attribute __MODULE__, :fixtures
deffixture my_model do
# Create a model somehow...
%{test: 1}
end
@fixtures: :my_model
test "that we have some fixtures", context do
assert context.my_model.test == 1
end
end
More details can be found in the documentation.