366 lines
11 KiB
Plaintext
366 lines
11 KiB
Plaintext
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recorder = monkeypatch.function(".......")
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-------------------------------------------------------------
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tags: nice feature
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Like monkeypatch.replace but sets a mock-like call recorder:
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recorder = monkeypatch.function("os.path.abspath")
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recorder.set_return("/hello")
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os.path.abspath("hello")
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call, = recorder.calls
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assert call.args.path == "hello"
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assert call.returned == "/hello"
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...
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Unlike mock, "args.path" acts on the parsed auto-spec'ed ``os.path.abspath``
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so it's independent from if the client side called "os.path.abspath(path=...)"
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or "os.path.abspath('positional')".
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refine parametrize API
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-------------------------------------------------------------
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tags: critical feature
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extend metafunc.parametrize to directly support indirection, example:
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def setupdb(request, config):
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# setup "resource" based on test request and the values passed
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# in to parametrize. setupfunc is called for each such value.
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# you may use request.addfinalizer() or request.cached_setup ...
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return dynamic_setup_database(val)
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@pytest.mark.parametrize("db", ["pg", "mysql"], setupfunc=setupdb)
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def test_heavy_functional_test(db):
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...
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There would be no need to write or explain funcarg factories and
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their special __ syntax.
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The examples and improvements should also show how to put the parametrize
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decorator to a class, to a module or even to a directory. For the directory
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part a conftest.py content like this::
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pytestmark = [
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@pytest.mark.parametrize_setup("db", ...),
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]
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probably makes sense in order to keep the declarative nature. This mirrors
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the marker-mechanism with respect to a test module but puts it to a directory
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scale.
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When doing larger scoped parametrization it probably becomes necessary
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to allow parametrization to be ignored if the according parameter is not
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used (currently any parametrized argument that is not present in a function will cause a ValueError). Example:
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@pytest.mark.parametrize("db", ..., mustmatch=False)
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means to not raise an error but simply ignore the parametrization
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if the signature of a decorated function does not match. XXX is it
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not sufficient to always allow non-matches?
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allow parametrized attributes on classes
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--------------------------------------------------
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tags: wish 2.4
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example:
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@pytest.mark.parametrize_attr("db", setupfunc, [1,2,3], scope="class")
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@pytest.mark.parametrize_attr("tmp", setupfunc, scope="...")
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class TestMe:
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def test_hello(self):
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access self.db ...
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this would run the test_hello() function three times with three
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different values for self.db. This could also work with unittest/nose
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style tests, i.e. it leverages existing test suites without needing
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to rewrite them. Together with the previously mentioned setup_test()
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maybe the setupfunc could be omitted?
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optimizations
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---------------------------------------------------------------
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tags: 2.4 core
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- look at ihook optimization such that all lookups for
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hooks relating to the same fspath are cached.
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fix start/finish partial finailization problem
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---------------------------------------------------------------
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tags: bug core
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if a configure/runtest_setup/sessionstart/... hook invocation partially
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fails the sessionfinishes is not called. Each hook implementation
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should better be repsonsible for registering a cleanup/finalizer
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appropriately to avoid this issue. Moreover/Alternatively, we could
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record which implementations of a hook succeeded and only call their
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teardown.
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relax requirement to have tests/testing contain an __init__
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----------------------------------------------------------------
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tags: feature
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bb: http://bitbucket.org/hpk42/py-trunk/issue/64
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A local test run of a "tests" directory may work
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but a remote one fail because the tests directory
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does not contain an "__init__.py". Either give
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an error or make it work without the __init__.py
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i.e. port the nose-logic of unloading a test module.
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customize test function collection
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-------------------------------------------------------
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tags: feature
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- introduce pytest.mark.nocollect for not considering a function for
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test collection at all. maybe also introduce a pytest.mark.test to
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explicitly mark a function to become a tested one. Lookup JUnit ways
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of tagging tests.
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introduce pytest.mark.importorskip
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-------------------------------------------------------
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tags: feature
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in addition to the imperative pytest.importorskip also introduce
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a pytest.mark.importorskip so that the test count is more correct.
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introduce pytest.mark.platform
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-------------------------------------------------------
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tags: feature
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Introduce nice-to-spell platform-skipping, examples:
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@pytest.mark.platform("python3")
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@pytest.mark.platform("not python3")
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@pytest.mark.platform("win32 and not python3")
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@pytest.mark.platform("darwin")
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@pytest.mark.platform("not (jython and win32)")
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@pytest.mark.platform("not (jython and win32)", xfail=True)
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etc. Idea is to allow Python expressions which can operate
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on common spellings for operating systems and python
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interpreter versions.
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pytest.mark.xfail signature change
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-------------------------------------------------------
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tags: feature
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change to pytest.mark.xfail(reason, (optional)condition)
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to better implement the word meaning. It also signals
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better that we always have some kind of an implementation
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reason that can be formualated.
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Compatibility? how to introduce a new name/keep compat?
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allow to non-intrusively apply skipfs/xfail/marks
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---------------------------------------------------
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tags: feature
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use case: mark a module or directory structures
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to be skipped on certain platforms (i.e. no import
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attempt will be made).
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consider introducing a hook/mechanism that allows to apply marks
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from conftests or plugins. (See extended parametrization)
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explicit referencing of conftest.py files
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-----------------------------------------
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tags: feature
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allow to name conftest.py files (in sub directories) that should
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be imported early, as to include command line options.
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improve central pytest ini file
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-------------------------------
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tags: feature
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introduce more declarative configuration options:
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- (to-be-collected test directories)
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- required plugins
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- test func/class/file matching patterns
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- skip/xfail (non-intrusive)
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- pytest.ini and tox.ini and setup.cfg configuration in the same file
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new documentation
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----------------------------------
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tags: feature
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- logo pytest
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- examples for unittest or functional testing
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- resource management for functional testing
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- patterns: page object
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have imported module mismatch honour relative paths
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--------------------------------------------------------
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tags: bug
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With 1.1.1 pytest fails at least on windows if an import
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is relative and compared against an absolute conftest.py
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path. Normalize.
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consider globals: pytest.ensuretemp and config
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--------------------------------------------------------------
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tags: experimental-wish
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consider deprecating pytest.ensuretemp and pytest.config
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to further reduce pytest globality. Also consider
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having pytest.config and ensuretemp coming from
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a plugin rather than being there from the start.
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consider pytest_addsyspath hook
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-----------------------------------------
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tags: wish
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pytest could call a new pytest_addsyspath() in order to systematically
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allow manipulation of sys.path and to inhibit it via --no-addsyspath
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in order to more easily run against installed packages.
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Alternatively it could also be done via the config object
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and pytest_configure.
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deprecate global pytest.config usage
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----------------------------------------------------------------
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tags: feature
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pytest.ensuretemp and pytest.config are probably the last
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objects containing global state. Often using them is not
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necessary. This is about trying to get rid of them, i.e.
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deprecating them and checking with PyPy's usages as well
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as others.
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remove deprecated bits in collect.py
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-------------------------------------------------------------------
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tags: feature
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In an effort to further simplify code, review and remove deprecated bits
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in collect.py. Probably good:
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- inline consider_file/dir methods, no need to have them
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subclass-overridable because of hooks
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implement fslayout decorator
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---------------------------------
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tags: feature
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Improve the way how tests can work with pre-made examples,
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keeping the layout close to the test function:
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@pytest.mark.fslayout("""
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conftest.py:
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# empty
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tests/
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test_%(NAME)s: # becomes test_run1.py
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def test_function(self):
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pass
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""")
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def test_run(pytester, fslayout):
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p = fslayout.findone("test_*.py")
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result = pytester.runpytest(p)
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assert result.ret == 0
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assert result.passed == 1
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Another idea is to allow to define a full scenario including the run
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in one content string::
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runscenario("""
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test_{TESTNAME}.py:
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import pytest
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@pytest.mark.xfail
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def test_that_fails():
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assert 0
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@pytest.mark.skipif("True")
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def test_hello():
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pass
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conftest.py:
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import pytest
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def pytest_runsetup_setup(item):
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pytest.skip("abc")
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runpytest -rsxX
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*SKIP*{TESTNAME}*
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*1 skipped*
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""")
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This could be run with at least three different ways to invoke pytest:
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through the shell, through "python -m pytest" and inlined. As inlined
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would be the fastest it could be run first (or "--fast" mode).
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Create isolate plugin
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---------------------
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tags: feature
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The idea is that you can e.g. import modules in a test and afterwards
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sys.modules, sys.meta_path etc would be reverted. It can go further
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then just importing however, e.g. current working directory, file
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descriptors, ...
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This would probably be done by marking::
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@pytest.mark.isolate(importing=True, cwd=True, fds=False)
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def test_foo():
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...
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With the possibility of doing this globally in an ini-file.
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fnmatch for test names
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----------------------
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tags: feature-wish
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various testsuites use suffixes instead of prefixes for test classes
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also it lends itself to bdd style test names::
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class UserBehaviour:
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def anonymous_should_not_have_inbox(user):
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...
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def registred_should_have_inbox(user):
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..
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using the following in pytest.ini::
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[pytest]
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python_classes = Test *Behaviour *Test
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python_functions = test *_should_*
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mechanism for running named parts of tests with different reporting behaviour
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------------------------------------------------------------------------------
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tags: feature-wish-incomplete
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a few use-cases come to mind:
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* fail assertions and record that without stopping a complete test
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* this is in particular hepfull if a small bit of a test is known to fail/xfail::
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def test_fun():
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with pytest.section('fdcheck, marks=pytest.mark.xfail_if(...)):
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breaks_on_windows()
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* divide functional/acceptance tests into sections
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* provide a different mechanism for generators, maybe something like::
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def pytest_runtest_call(item)
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if not generator:
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...
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prepare_check = GeneratorCheckprepare()
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gen = item.obj(**fixtures)
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for check in gen
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id, call = prepare_check(check)
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# bubble should only prevent exception propagation after a failure
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# the whole test should still fail
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# there might be need for a lower level api and taking custom markers into account
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with pytest.section(id, bubble=False):
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call()
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