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Pytest and coverage Tool
py.test <files>
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Run py.test tool |
--maxfail=X
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Exit after failing X tests |
--durations=10
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Use this to Profile your tests (time taken) |
--cov=path
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Run coverage within the project path |
--cov-report term-missing
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Add this to show which lines were not covered |
Packages to install:
pip install pytest
pip install pytest-sugar
pip install pytest-cov
Pytest with Flask
client = app.test_client()
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Gives you an Test Client object |
client.get(url)
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Makes a GET request |
client.post(url, data=[])
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Makes a POST request |
client.put(url, data=[])
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Makes a PUT request |
You can create a test client to test your Flask app
Coverage Configuration File
.coveragerc
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Default filename looked for |
[report]
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Section defining the report |
exclude_lines =
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Exclude lines defined after |
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Write after exclude_lines = the lines as they are in Python code
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Fixture
@pytest.fixture()
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Fixture decorator |
scope="session"
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Scope for the fixture: Can be session, module, class or function |
params=[]
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For each value, the fixture will be called with that value (this makes multiple calls) |
autouse=False
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All tests in the session use the fixture automatically |
def my_fixture(request)
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Putting request object in fixture gives you access to the pytest request (e.g. put a finalizer) |
pytest --fixtures
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See all available fixtures |
The purpose of test fixtures is to provide a fixed baseline upon which tests can reliably and repeatedly execute.
pytest-mock
In short, mocking is creating objects that simulate the behaviour of real objects.
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