Pytest plugin to display test reports as a plaintext spec, inspired by Rspec: https://github.com/mattduck/pytest-it.
Decorate your pytest suite with RSpec-inspired markers describe, context and it. Then run pytest --it to see a plaintext, org-mode compatible spec of the test structure.
pytest-it is available on PyPi: pip install pytest-it.
A basic example that uses pytest.mark.describe, pytest.mark.context and pytest.mark.it:
from pytest import mark as m @m.describe("The test function report format") class TestPytestItExample(object): @m.context("When @pytest.mark.it is used") @m.it("Displays an '- It: ' block matching the decorator") def test_it_decorator(self, testdir): pass
- Describe: The test function report format... - Context: When @pytest.mark.it is used... - ✓ It: Displays an '- It: ' block matching the decorator
Describe and Context blocks can be nested arbitrarily by using multiple markers, eg:
from pytest import mark as m @m.describe("The test function report format") class TestPytestItExample(object): @m.context("When @pytest.mark.it is not used") @m.it("Displays the test function name") def test_no_argument(self, testdir): pass @m.context("When @pytest.mark.it is not used") @m.context("but the test name starts with 'test_it_'") @m.it("Prettifies the test name into the 'It: ' value") def test_populates_the_it_marker_using_function_name(self, testdir): pass
- Describe: The test function report format... - Context: When @pytest.mark.it is not used... - ✓ It: Displays the test function name - ...but the test name starts with 'test_it_'... - ✓ It: Prettifies the test name into the 'It: ' value
Pytest markers are used to specify the Describe:, Context: and It: sections. You can set these in all the usual ways that you specify pytest markers.
Describe and Context can be nested arbitrarily.
If --collect-only is used, it displays the same pytest-it spec as usual, but without the test result (✓/F/s).
If -v is higher than 0, the full path to the test function is include in the test name.
If pytest.mark.it is not used on a test, the test name is displayed instead of the It: does something output.
If pytest.mark.it is not used but the test name starts with test_it, pytest-it will prettify the test name into an It: does something value.
The test output should be able to be copied directly into an org-mode file.
Pytest provides a lot of useful features for testing in Python, but when testing complex systems, it can be hard to clearly communicate the intent of a test using the standard test_module.py::TestClass::test_function structure.
There are some pytest plugins that attempt to bridge this gap, by providing alternative ways to structure the tests (eg. pytest-describe, pytest-bdd), or altering the test report output (eg. pytest-testdox, pytest-pspec).
pytest-it takes a similar approach to pytest-testdox, by providing pytest markers that can describe the test output. pytest-it supports a few other features, such as:
A plaintext test structure that can easily be copied to markdown/org-mode documents.
Arbitrary nesting of describe and context markers.
Supporting the --collect-only pytest flag to display test structure.
Displaying the full path to each test if -v is used.
Neatly integrating tests in the output if they don’t use the pytest-it markers.
Although pytest-it does not change the behaviour of pytest tests, you may find it a useful tool for thinking about test structure, and communicating the intention of both the test code and the system under test.
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