1332 lines
46 KiB
Python
1332 lines
46 KiB
Python
""" Python test discovery, setup and run of test functions. """
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from __future__ import absolute_import, division, print_function
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import fnmatch
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import inspect
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import sys
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import os
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import collections
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import warnings
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from textwrap import dedent
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from itertools import count
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import py
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import six
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from _pytest.mark import MarkerError
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from _pytest.config import hookimpl
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import _pytest
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import pluggy
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from _pytest import fixtures
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from _pytest import nodes
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from _pytest import deprecated
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from _pytest.compat import (
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isclass,
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isfunction,
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is_generator,
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ascii_escaped,
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REGEX_TYPE,
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STRING_TYPES,
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NoneType,
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NOTSET,
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get_real_func,
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getfslineno,
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safe_getattr,
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safe_str,
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getlocation,
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enum,
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get_default_arg_names,
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)
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from _pytest.outcomes import fail
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from _pytest.mark.structures import transfer_markers, get_unpacked_marks
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# relative paths that we use to filter traceback entries from appearing to the user;
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# see filter_traceback
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# note: if we need to add more paths than what we have now we should probably use a list
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# for better maintenance
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_pluggy_dir = py.path.local(pluggy.__file__.rstrip("oc"))
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# pluggy is either a package or a single module depending on the version
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if _pluggy_dir.basename == "__init__.py":
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_pluggy_dir = _pluggy_dir.dirpath()
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_pytest_dir = py.path.local(_pytest.__file__).dirpath()
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_py_dir = py.path.local(py.__file__).dirpath()
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def filter_traceback(entry):
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"""Return True if a TracebackEntry instance should be removed from tracebacks:
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* dynamically generated code (no code to show up for it);
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* internal traceback from pytest or its internal libraries, py and pluggy.
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"""
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# entry.path might sometimes return a str object when the entry
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# points to dynamically generated code
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# see https://bitbucket.org/pytest-dev/py/issues/71
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raw_filename = entry.frame.code.raw.co_filename
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is_generated = "<" in raw_filename and ">" in raw_filename
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if is_generated:
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return False
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# entry.path might point to a non-existing file, in which case it will
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# also return a str object. see #1133
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p = py.path.local(entry.path)
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return not p.relto(_pluggy_dir) and not p.relto(_pytest_dir) and not p.relto(
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_py_dir
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)
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def pyobj_property(name):
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def get(self):
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node = self.getparent(getattr(__import__("pytest"), name))
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if node is not None:
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return node.obj
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doc = "python %s object this node was collected from (can be None)." % (
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name.lower(),
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)
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return property(get, None, None, doc)
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def pytest_addoption(parser):
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group = parser.getgroup("general")
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group.addoption(
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"--fixtures",
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"--funcargs",
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action="store_true",
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dest="showfixtures",
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default=False,
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help="show available fixtures, sorted by plugin appearance "
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"(fixtures with leading '_' are only shown with '-v')",
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)
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group.addoption(
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"--fixtures-per-test",
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action="store_true",
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dest="show_fixtures_per_test",
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default=False,
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help="show fixtures per test",
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)
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parser.addini(
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"usefixtures",
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type="args",
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default=[],
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help="list of default fixtures to be used with this project",
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)
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parser.addini(
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"python_files",
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type="args",
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default=["test_*.py", "*_test.py"],
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help="glob-style file patterns for Python test module discovery",
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)
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parser.addini(
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"python_classes",
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type="args",
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default=["Test"],
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help="prefixes or glob names for Python test class discovery",
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)
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parser.addini(
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"python_functions",
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type="args",
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default=["test"],
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help="prefixes or glob names for Python test function and " "method discovery",
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)
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group.addoption(
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"--import-mode",
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default="prepend",
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choices=["prepend", "append"],
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dest="importmode",
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help="prepend/append to sys.path when importing test modules, "
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"default is to prepend.",
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)
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def pytest_cmdline_main(config):
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if config.option.showfixtures:
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showfixtures(config)
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return 0
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if config.option.show_fixtures_per_test:
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show_fixtures_per_test(config)
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return 0
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def pytest_generate_tests(metafunc):
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# those alternative spellings are common - raise a specific error to alert
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# the user
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alt_spellings = ["parameterize", "parametrise", "parameterise"]
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for attr in alt_spellings:
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if hasattr(metafunc.function, attr):
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msg = "{0} has '{1}', spelling should be 'parametrize'"
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raise MarkerError(msg.format(metafunc.function.__name__, attr))
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for marker in metafunc.definition.iter_markers(name="parametrize"):
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metafunc.parametrize(*marker.args, **marker.kwargs)
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def pytest_configure(config):
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config.addinivalue_line(
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"markers",
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"parametrize(argnames, argvalues): call a test function multiple "
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"times passing in different arguments in turn. argvalues generally "
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"needs to be a list of values if argnames specifies only one name "
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"or a list of tuples of values if argnames specifies multiple names. "
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"Example: @parametrize('arg1', [1,2]) would lead to two calls of the "
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"decorated test function, one with arg1=1 and another with arg1=2."
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"see http://pytest.org/latest/parametrize.html for more info and "
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"examples.",
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)
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config.addinivalue_line(
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"markers",
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"usefixtures(fixturename1, fixturename2, ...): mark tests as needing "
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"all of the specified fixtures. see http://pytest.org/latest/fixture.html#usefixtures ",
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)
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@hookimpl(trylast=True)
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def pytest_pyfunc_call(pyfuncitem):
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testfunction = pyfuncitem.obj
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if pyfuncitem._isyieldedfunction():
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testfunction(*pyfuncitem._args)
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else:
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funcargs = pyfuncitem.funcargs
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testargs = {}
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for arg in pyfuncitem._fixtureinfo.argnames:
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testargs[arg] = funcargs[arg]
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testfunction(**testargs)
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return True
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def pytest_collect_file(path, parent):
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ext = path.ext
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if ext == ".py":
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if not parent.session.isinitpath(path):
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for pat in parent.config.getini("python_files"):
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if path.fnmatch(pat):
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break
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else:
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return
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ihook = parent.session.gethookproxy(path)
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return ihook.pytest_pycollect_makemodule(path=path, parent=parent)
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def pytest_pycollect_makemodule(path, parent):
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return Module(path, parent)
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@hookimpl(hookwrapper=True)
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def pytest_pycollect_makeitem(collector, name, obj):
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outcome = yield
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res = outcome.get_result()
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if res is not None:
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return
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# nothing was collected elsewhere, let's do it here
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if isclass(obj):
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if collector.istestclass(obj, name):
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Class = collector._getcustomclass("Class")
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outcome.force_result(Class(name, parent=collector))
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elif collector.istestfunction(obj, name):
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# mock seems to store unbound methods (issue473), normalize it
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obj = getattr(obj, "__func__", obj)
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# We need to try and unwrap the function if it's a functools.partial
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# or a funtools.wrapped.
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# We musn't if it's been wrapped with mock.patch (python 2 only)
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if not (isfunction(obj) or isfunction(get_real_func(obj))):
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collector.warn(
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code="C2",
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message="cannot collect %r because it is not a function." % name,
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)
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elif getattr(obj, "__test__", True):
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if is_generator(obj):
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res = Generator(name, parent=collector)
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else:
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res = list(collector._genfunctions(name, obj))
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outcome.force_result(res)
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def pytest_make_parametrize_id(config, val, argname=None):
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return None
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class PyobjContext(object):
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module = pyobj_property("Module")
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cls = pyobj_property("Class")
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instance = pyobj_property("Instance")
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class PyobjMixin(PyobjContext):
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_ALLOW_MARKERS = True
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def __init__(self, *k, **kw):
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super(PyobjMixin, self).__init__(*k, **kw)
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def obj():
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def fget(self):
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obj = getattr(self, "_obj", None)
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if obj is None:
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self._obj = obj = self._getobj()
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# XXX evil hack
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# used to avoid Instance collector marker duplication
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if self._ALLOW_MARKERS:
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self.own_markers.extend(get_unpacked_marks(self.obj))
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return obj
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def fset(self, value):
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self._obj = value
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return property(fget, fset, None, "underlying python object")
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obj = obj()
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def _getobj(self):
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return getattr(self.parent.obj, self.name)
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def getmodpath(self, stopatmodule=True, includemodule=False):
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""" return python path relative to the containing module. """
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chain = self.listchain()
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chain.reverse()
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parts = []
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for node in chain:
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if isinstance(node, Instance):
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continue
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name = node.name
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if isinstance(node, Module):
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name = os.path.splitext(name)[0]
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if stopatmodule:
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if includemodule:
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parts.append(name)
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break
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parts.append(name)
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parts.reverse()
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s = ".".join(parts)
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return s.replace(".[", "[")
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def _getfslineno(self):
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return getfslineno(self.obj)
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def reportinfo(self):
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# XXX caching?
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obj = self.obj
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compat_co_firstlineno = getattr(obj, "compat_co_firstlineno", None)
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if isinstance(compat_co_firstlineno, int):
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# nose compatibility
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fspath = sys.modules[obj.__module__].__file__
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if fspath.endswith(".pyc"):
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fspath = fspath[:-1]
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lineno = compat_co_firstlineno
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else:
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fspath, lineno = getfslineno(obj)
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modpath = self.getmodpath()
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assert isinstance(lineno, int)
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return fspath, lineno, modpath
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class PyCollector(PyobjMixin, nodes.Collector):
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def funcnamefilter(self, name):
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return self._matches_prefix_or_glob_option("python_functions", name)
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def isnosetest(self, obj):
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""" Look for the __test__ attribute, which is applied by the
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@nose.tools.istest decorator
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"""
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# We explicitly check for "is True" here to not mistakenly treat
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# classes with a custom __getattr__ returning something truthy (like a
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# function) as test classes.
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return safe_getattr(obj, "__test__", False) is True
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def classnamefilter(self, name):
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return self._matches_prefix_or_glob_option("python_classes", name)
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def istestfunction(self, obj, name):
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if self.funcnamefilter(name) or self.isnosetest(obj):
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if isinstance(obj, staticmethod):
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# static methods need to be unwrapped
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obj = safe_getattr(obj, "__func__", False)
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if obj is False:
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# Python 2.6 wraps in a different way that we won't try to handle
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msg = "cannot collect static method %r because it is not a function"
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self.warn(code="C2", message=msg % name)
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return False
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return (
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safe_getattr(obj, "__call__", False)
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and fixtures.getfixturemarker(obj) is None
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)
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else:
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return False
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def istestclass(self, obj, name):
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return self.classnamefilter(name) or self.isnosetest(obj)
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def _matches_prefix_or_glob_option(self, option_name, name):
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"""
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checks if the given name matches the prefix or glob-pattern defined
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in ini configuration.
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"""
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for option in self.config.getini(option_name):
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if name.startswith(option):
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return True
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# check that name looks like a glob-string before calling fnmatch
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# because this is called for every name in each collected module,
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# and fnmatch is somewhat expensive to call
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elif ("*" in option or "?" in option or "[" in option) and fnmatch.fnmatch(
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name, option
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):
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return True
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return False
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def collect(self):
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if not getattr(self.obj, "__test__", True):
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return []
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# NB. we avoid random getattrs and peek in the __dict__ instead
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# (XXX originally introduced from a PyPy need, still true?)
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dicts = [getattr(self.obj, "__dict__", {})]
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for basecls in inspect.getmro(self.obj.__class__):
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dicts.append(basecls.__dict__)
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seen = {}
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values = []
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for dic in dicts:
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for name, obj in list(dic.items()):
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if name in seen:
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continue
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seen[name] = True
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res = self._makeitem(name, obj)
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if res is None:
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continue
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if not isinstance(res, list):
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res = [res]
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values.extend(res)
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values.sort(key=lambda item: item.reportinfo()[:2])
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return values
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def makeitem(self, name, obj):
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warnings.warn(deprecated.COLLECTOR_MAKEITEM, stacklevel=2)
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self._makeitem(name, obj)
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def _makeitem(self, name, obj):
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# assert self.ihook.fspath == self.fspath, self
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return self.ihook.pytest_pycollect_makeitem(collector=self, name=name, obj=obj)
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def _genfunctions(self, name, funcobj):
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module = self.getparent(Module).obj
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clscol = self.getparent(Class)
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cls = clscol and clscol.obj or None
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transfer_markers(funcobj, cls, module)
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fm = self.session._fixturemanager
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definition = FunctionDefinition(name=name, parent=self, callobj=funcobj)
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fixtureinfo = fm.getfixtureinfo(definition, funcobj, cls)
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metafunc = Metafunc(
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definition, fixtureinfo, self.config, cls=cls, module=module
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)
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methods = []
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if hasattr(module, "pytest_generate_tests"):
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methods.append(module.pytest_generate_tests)
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if hasattr(cls, "pytest_generate_tests"):
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methods.append(cls().pytest_generate_tests)
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if methods:
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self.ihook.pytest_generate_tests.call_extra(
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methods, dict(metafunc=metafunc)
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)
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else:
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self.ihook.pytest_generate_tests(metafunc=metafunc)
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Function = self._getcustomclass("Function")
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if not metafunc._calls:
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yield Function(name, parent=self, fixtureinfo=fixtureinfo)
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else:
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# add funcargs() as fixturedefs to fixtureinfo.arg2fixturedefs
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fixtures.add_funcarg_pseudo_fixture_def(self, metafunc, fm)
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for callspec in metafunc._calls:
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subname = "%s[%s]" % (name, callspec.id)
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yield Function(
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name=subname,
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parent=self,
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callspec=callspec,
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callobj=funcobj,
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fixtureinfo=fixtureinfo,
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keywords={callspec.id: True},
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originalname=name,
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)
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|
|
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class Module(nodes.File, PyCollector):
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""" Collector for test classes and functions. """
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|
|
|
def _getobj(self):
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return self._importtestmodule()
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def collect(self):
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self.session._fixturemanager.parsefactories(self)
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return super(Module, self).collect()
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def _importtestmodule(self):
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# we assume we are only called once per module
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importmode = self.config.getoption("--import-mode")
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try:
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mod = self.fspath.pyimport(ensuresyspath=importmode)
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except SyntaxError:
|
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raise self.CollectError(
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_pytest._code.ExceptionInfo().getrepr(style="short")
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)
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|
except self.fspath.ImportMismatchError:
|
|
e = sys.exc_info()[1]
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|
raise self.CollectError(
|
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"import file mismatch:\n"
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|
"imported module %r has this __file__ attribute:\n"
|
|
" %s\n"
|
|
"which is not the same as the test file we want to collect:\n"
|
|
" %s\n"
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|
"HINT: remove __pycache__ / .pyc files and/or use a "
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|
"unique basename for your test file modules" % e.args
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)
|
|
except ImportError:
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|
from _pytest._code.code import ExceptionInfo
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|
|
exc_info = ExceptionInfo()
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if self.config.getoption("verbose") < 2:
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exc_info.traceback = exc_info.traceback.filter(filter_traceback)
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exc_repr = exc_info.getrepr(
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style="short"
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) if exc_info.traceback else exc_info.exconly()
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formatted_tb = safe_str(exc_repr)
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raise self.CollectError(
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"ImportError while importing test module '{fspath}'.\n"
|
|
"Hint: make sure your test modules/packages have valid Python names.\n"
|
|
"Traceback:\n"
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"{traceback}".format(fspath=self.fspath, traceback=formatted_tb)
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)
|
|
except _pytest.runner.Skipped as e:
|
|
if e.allow_module_level:
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raise
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raise self.CollectError(
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"Using pytest.skip outside of a test is not allowed. "
|
|
"To decorate a test function, use the @pytest.mark.skip "
|
|
"or @pytest.mark.skipif decorators instead, and to skip a "
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|
"module use `pytestmark = pytest.mark.{skip,skipif}."
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)
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self.config.pluginmanager.consider_module(mod)
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return mod
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def setup(self):
|
|
setup_module = _get_xunit_setup_teardown(self.obj, "setUpModule")
|
|
if setup_module is None:
|
|
setup_module = _get_xunit_setup_teardown(self.obj, "setup_module")
|
|
if setup_module is not None:
|
|
setup_module()
|
|
|
|
teardown_module = _get_xunit_setup_teardown(self.obj, "tearDownModule")
|
|
if teardown_module is None:
|
|
teardown_module = _get_xunit_setup_teardown(self.obj, "teardown_module")
|
|
if teardown_module is not None:
|
|
self.addfinalizer(teardown_module)
|
|
|
|
|
|
def _get_xunit_setup_teardown(holder, attr_name, param_obj=None):
|
|
"""
|
|
Return a callable to perform xunit-style setup or teardown if
|
|
the function exists in the ``holder`` object.
|
|
The ``param_obj`` parameter is the parameter which will be passed to the function
|
|
when the callable is called without arguments, defaults to the ``holder`` object.
|
|
Return ``None`` if a suitable callable is not found.
|
|
"""
|
|
param_obj = param_obj if param_obj is not None else holder
|
|
result = _get_xunit_func(holder, attr_name)
|
|
if result is not None:
|
|
arg_count = result.__code__.co_argcount
|
|
if inspect.ismethod(result):
|
|
arg_count -= 1
|
|
if arg_count:
|
|
return lambda: result(param_obj)
|
|
else:
|
|
return result
|
|
|
|
|
|
def _get_xunit_func(obj, name):
|
|
"""Return the attribute from the given object to be used as a setup/teardown
|
|
xunit-style function, but only if not marked as a fixture to
|
|
avoid calling it twice.
|
|
"""
|
|
meth = getattr(obj, name, None)
|
|
if fixtures.getfixturemarker(meth) is None:
|
|
return meth
|
|
|
|
|
|
class Class(PyCollector):
|
|
""" Collector for test methods. """
|
|
|
|
def collect(self):
|
|
if not safe_getattr(self.obj, "__test__", True):
|
|
return []
|
|
if hasinit(self.obj):
|
|
self.warn(
|
|
"C1",
|
|
"cannot collect test class %r because it has a "
|
|
"__init__ constructor" % self.obj.__name__,
|
|
)
|
|
return []
|
|
elif hasnew(self.obj):
|
|
self.warn(
|
|
"C1",
|
|
"cannot collect test class %r because it has a "
|
|
"__new__ constructor" % self.obj.__name__,
|
|
)
|
|
return []
|
|
return [self._getcustomclass("Instance")(name="()", parent=self)]
|
|
|
|
def setup(self):
|
|
setup_class = _get_xunit_func(self.obj, "setup_class")
|
|
if setup_class is not None:
|
|
setup_class = getattr(setup_class, "im_func", setup_class)
|
|
setup_class = getattr(setup_class, "__func__", setup_class)
|
|
setup_class(self.obj)
|
|
|
|
fin_class = getattr(self.obj, "teardown_class", None)
|
|
if fin_class is not None:
|
|
fin_class = getattr(fin_class, "im_func", fin_class)
|
|
fin_class = getattr(fin_class, "__func__", fin_class)
|
|
self.addfinalizer(lambda: fin_class(self.obj))
|
|
|
|
|
|
class Instance(PyCollector):
|
|
_ALLOW_MARKERS = False # hack, destroy later
|
|
# instances share the object with their parents in a way
|
|
# that duplicates markers instances if not taken out
|
|
# can be removed at node strucutre reorganization time
|
|
|
|
def _getobj(self):
|
|
return self.parent.obj()
|
|
|
|
def collect(self):
|
|
self.session._fixturemanager.parsefactories(self)
|
|
return super(Instance, self).collect()
|
|
|
|
def newinstance(self):
|
|
self.obj = self._getobj()
|
|
return self.obj
|
|
|
|
|
|
class FunctionMixin(PyobjMixin):
|
|
""" mixin for the code common to Function and Generator.
|
|
"""
|
|
|
|
def setup(self):
|
|
""" perform setup for this test function. """
|
|
if hasattr(self, "_preservedparent"):
|
|
obj = self._preservedparent
|
|
elif isinstance(self.parent, Instance):
|
|
obj = self.parent.newinstance()
|
|
self.obj = self._getobj()
|
|
else:
|
|
obj = self.parent.obj
|
|
if inspect.ismethod(self.obj):
|
|
setup_name = "setup_method"
|
|
teardown_name = "teardown_method"
|
|
else:
|
|
setup_name = "setup_function"
|
|
teardown_name = "teardown_function"
|
|
setup_func_or_method = _get_xunit_setup_teardown(
|
|
obj, setup_name, param_obj=self.obj
|
|
)
|
|
if setup_func_or_method is not None:
|
|
setup_func_or_method()
|
|
teardown_func_or_method = _get_xunit_setup_teardown(
|
|
obj, teardown_name, param_obj=self.obj
|
|
)
|
|
if teardown_func_or_method is not None:
|
|
self.addfinalizer(teardown_func_or_method)
|
|
|
|
def _prunetraceback(self, excinfo):
|
|
if hasattr(self, "_obj") and not self.config.option.fulltrace:
|
|
code = _pytest._code.Code(get_real_func(self.obj))
|
|
path, firstlineno = code.path, code.firstlineno
|
|
traceback = excinfo.traceback
|
|
ntraceback = traceback.cut(path=path, firstlineno=firstlineno)
|
|
if ntraceback == traceback:
|
|
ntraceback = ntraceback.cut(path=path)
|
|
if ntraceback == traceback:
|
|
ntraceback = ntraceback.filter(filter_traceback)
|
|
if not ntraceback:
|
|
ntraceback = traceback
|
|
|
|
excinfo.traceback = ntraceback.filter()
|
|
# issue364: mark all but first and last frames to
|
|
# only show a single-line message for each frame
|
|
if self.config.option.tbstyle == "auto":
|
|
if len(excinfo.traceback) > 2:
|
|
for entry in excinfo.traceback[1:-1]:
|
|
entry.set_repr_style("short")
|
|
|
|
def _repr_failure_py(self, excinfo, style="long"):
|
|
if excinfo.errisinstance(fail.Exception):
|
|
if not excinfo.value.pytrace:
|
|
return py._builtin._totext(excinfo.value)
|
|
return super(FunctionMixin, self)._repr_failure_py(excinfo, style=style)
|
|
|
|
def repr_failure(self, excinfo, outerr=None):
|
|
assert outerr is None, "XXX outerr usage is deprecated"
|
|
style = self.config.option.tbstyle
|
|
if style == "auto":
|
|
style = "long"
|
|
return self._repr_failure_py(excinfo, style=style)
|
|
|
|
|
|
class Generator(FunctionMixin, PyCollector):
|
|
|
|
def collect(self):
|
|
# test generators are seen as collectors but they also
|
|
# invoke setup/teardown on popular request
|
|
# (induced by the common "test_*" naming shared with normal tests)
|
|
from _pytest import deprecated
|
|
|
|
self.session._setupstate.prepare(self)
|
|
# see FunctionMixin.setup and test_setupstate_is_preserved_134
|
|
self._preservedparent = self.parent.obj
|
|
values = []
|
|
seen = {}
|
|
for i, x in enumerate(self.obj()):
|
|
name, call, args = self.getcallargs(x)
|
|
if not callable(call):
|
|
raise TypeError("%r yielded non callable test %r" % (self.obj, call))
|
|
if name is None:
|
|
name = "[%d]" % i
|
|
else:
|
|
name = "['%s']" % name
|
|
if name in seen:
|
|
raise ValueError(
|
|
"%r generated tests with non-unique name %r" % (self, name)
|
|
)
|
|
seen[name] = True
|
|
values.append(self.Function(name, self, args=args, callobj=call))
|
|
self.warn("C1", deprecated.YIELD_TESTS)
|
|
return values
|
|
|
|
def getcallargs(self, obj):
|
|
if not isinstance(obj, (tuple, list)):
|
|
obj = (obj,)
|
|
# explicit naming
|
|
if isinstance(obj[0], six.string_types):
|
|
name = obj[0]
|
|
obj = obj[1:]
|
|
else:
|
|
name = None
|
|
call, args = obj[0], obj[1:]
|
|
return name, call, args
|
|
|
|
|
|
def hasinit(obj):
|
|
init = getattr(obj, "__init__", None)
|
|
if init:
|
|
return init != object.__init__
|
|
|
|
|
|
def hasnew(obj):
|
|
new = getattr(obj, "__new__", None)
|
|
if new:
|
|
return new != object.__new__
|
|
|
|
|
|
class CallSpec2(object):
|
|
|
|
def __init__(self, metafunc):
|
|
self.metafunc = metafunc
|
|
self.funcargs = {}
|
|
self._idlist = []
|
|
self.params = {}
|
|
self._globalid = NOTSET
|
|
self._globalid_args = set()
|
|
self._globalparam = NOTSET
|
|
self._arg2scopenum = {} # used for sorting parametrized resources
|
|
self.marks = []
|
|
self.indices = {}
|
|
|
|
def copy(self, metafunc):
|
|
cs = CallSpec2(self.metafunc)
|
|
cs.funcargs.update(self.funcargs)
|
|
cs.params.update(self.params)
|
|
cs.marks.extend(self.marks)
|
|
cs.indices.update(self.indices)
|
|
cs._arg2scopenum.update(self._arg2scopenum)
|
|
cs._idlist = list(self._idlist)
|
|
cs._globalid = self._globalid
|
|
cs._globalid_args = self._globalid_args
|
|
cs._globalparam = self._globalparam
|
|
return cs
|
|
|
|
def _checkargnotcontained(self, arg):
|
|
if arg in self.params or arg in self.funcargs:
|
|
raise ValueError("duplicate %r" % (arg,))
|
|
|
|
def getparam(self, name):
|
|
try:
|
|
return self.params[name]
|
|
except KeyError:
|
|
if self._globalparam is NOTSET:
|
|
raise ValueError(name)
|
|
return self._globalparam
|
|
|
|
@property
|
|
def id(self):
|
|
return "-".join(map(str, filter(None, self._idlist)))
|
|
|
|
def setmulti2(self, valtypes, argnames, valset, id, marks, scopenum, param_index):
|
|
for arg, val in zip(argnames, valset):
|
|
self._checkargnotcontained(arg)
|
|
valtype_for_arg = valtypes[arg]
|
|
getattr(self, valtype_for_arg)[arg] = val
|
|
self.indices[arg] = param_index
|
|
self._arg2scopenum[arg] = scopenum
|
|
self._idlist.append(id)
|
|
self.marks.extend(marks)
|
|
|
|
def setall(self, funcargs, id, param):
|
|
for x in funcargs:
|
|
self._checkargnotcontained(x)
|
|
self.funcargs.update(funcargs)
|
|
if id is not NOTSET:
|
|
self._idlist.append(id)
|
|
if param is not NOTSET:
|
|
assert self._globalparam is NOTSET
|
|
self._globalparam = param
|
|
for arg in funcargs:
|
|
self._arg2scopenum[arg] = fixtures.scopenum_function
|
|
|
|
|
|
class Metafunc(fixtures.FuncargnamesCompatAttr):
|
|
"""
|
|
Metafunc objects are passed to the :func:`pytest_generate_tests <_pytest.hookspec.pytest_generate_tests>` hook.
|
|
They help to inspect a test function and to generate tests according to
|
|
test configuration or values specified in the class or module where a
|
|
test function is defined.
|
|
"""
|
|
|
|
def __init__(self, definition, fixtureinfo, config, cls=None, module=None):
|
|
#: access to the :class:`_pytest.config.Config` object for the test session
|
|
assert (
|
|
isinstance(definition, FunctionDefinition)
|
|
or type(definition).__name__ == "DefinitionMock"
|
|
)
|
|
self.definition = definition
|
|
self.config = config
|
|
|
|
#: the module object where the test function is defined in.
|
|
self.module = module
|
|
|
|
#: underlying python test function
|
|
self.function = definition.obj
|
|
|
|
#: set of fixture names required by the test function
|
|
self.fixturenames = fixtureinfo.names_closure
|
|
|
|
#: class object where the test function is defined in or ``None``.
|
|
self.cls = cls
|
|
|
|
self._calls = []
|
|
self._ids = set()
|
|
self._arg2fixturedefs = fixtureinfo.name2fixturedefs
|
|
|
|
def parametrize(self, argnames, argvalues, indirect=False, ids=None, scope=None):
|
|
""" Add new invocations to the underlying test function using the list
|
|
of argvalues for the given argnames. Parametrization is performed
|
|
during the collection phase. If you need to setup expensive resources
|
|
see about setting indirect to do it rather at test setup time.
|
|
|
|
:arg argnames: a comma-separated string denoting one or more argument
|
|
names, or a list/tuple of argument strings.
|
|
|
|
:arg argvalues: The list of argvalues determines how often a
|
|
test is invoked with different argument values. If only one
|
|
argname was specified argvalues is a list of values. If N
|
|
argnames were specified, argvalues must be a list of N-tuples,
|
|
where each tuple-element specifies a value for its respective
|
|
argname.
|
|
|
|
:arg indirect: The list of argnames or boolean. A list of arguments'
|
|
names (subset of argnames). If True the list contains all names from
|
|
the argnames. Each argvalue corresponding to an argname in this list will
|
|
be passed as request.param to its respective argname fixture
|
|
function so that it can perform more expensive setups during the
|
|
setup phase of a test rather than at collection time.
|
|
|
|
:arg ids: list of string ids, or a callable.
|
|
If strings, each is corresponding to the argvalues so that they are
|
|
part of the test id. If None is given as id of specific test, the
|
|
automatically generated id for that argument will be used.
|
|
If callable, it should take one argument (a single argvalue) and return
|
|
a string or return None. If None, the automatically generated id for that
|
|
argument will be used.
|
|
If no ids are provided they will be generated automatically from
|
|
the argvalues.
|
|
|
|
:arg scope: if specified it denotes the scope of the parameters.
|
|
The scope is used for grouping tests by parameter instances.
|
|
It will also override any fixture-function defined scope, allowing
|
|
to set a dynamic scope using test context or configuration.
|
|
"""
|
|
from _pytest.fixtures import scope2index
|
|
from _pytest.mark import ParameterSet
|
|
from py.io import saferepr
|
|
|
|
argnames, parameters = ParameterSet._for_parametrize(
|
|
argnames, argvalues, self.function, self.config
|
|
)
|
|
del argvalues
|
|
default_arg_names = set(get_default_arg_names(self.function))
|
|
|
|
if scope is None:
|
|
scope = _find_parametrized_scope(argnames, self._arg2fixturedefs, indirect)
|
|
|
|
scopenum = scope2index(scope, descr="call to {}".format(self.parametrize))
|
|
valtypes = {}
|
|
for arg in argnames:
|
|
if arg not in self.fixturenames:
|
|
if arg in default_arg_names:
|
|
raise ValueError(
|
|
"%r already takes an argument %r with a default value"
|
|
% (self.function, arg)
|
|
)
|
|
else:
|
|
if isinstance(indirect, (tuple, list)):
|
|
name = "fixture" if arg in indirect else "argument"
|
|
else:
|
|
name = "fixture" if indirect else "argument"
|
|
raise ValueError("%r uses no %s %r" % (self.function, name, arg))
|
|
|
|
if indirect is True:
|
|
valtypes = dict.fromkeys(argnames, "params")
|
|
elif indirect is False:
|
|
valtypes = dict.fromkeys(argnames, "funcargs")
|
|
elif isinstance(indirect, (tuple, list)):
|
|
valtypes = dict.fromkeys(argnames, "funcargs")
|
|
for arg in indirect:
|
|
if arg not in argnames:
|
|
raise ValueError(
|
|
"indirect given to %r: fixture %r doesn't exist"
|
|
% (self.function, arg)
|
|
)
|
|
valtypes[arg] = "params"
|
|
idfn = None
|
|
if callable(ids):
|
|
idfn = ids
|
|
ids = None
|
|
if ids:
|
|
if len(ids) != len(parameters):
|
|
raise ValueError(
|
|
"%d tests specified with %d ids" % (len(parameters), len(ids))
|
|
)
|
|
for id_value in ids:
|
|
if id_value is not None and not isinstance(id_value, six.string_types):
|
|
msg = "ids must be list of strings, found: %s (type: %s)"
|
|
raise ValueError(
|
|
msg % (saferepr(id_value), type(id_value).__name__)
|
|
)
|
|
ids = idmaker(argnames, parameters, idfn, ids, self.config)
|
|
newcalls = []
|
|
for callspec in self._calls or [CallSpec2(self)]:
|
|
elements = zip(ids, parameters, count())
|
|
for a_id, param, param_index in elements:
|
|
if len(param.values) != len(argnames):
|
|
raise ValueError(
|
|
'In "parametrize" the number of values ({}) must be '
|
|
"equal to the number of names ({})".format(
|
|
param.values, argnames
|
|
)
|
|
)
|
|
newcallspec = callspec.copy(self)
|
|
newcallspec.setmulti2(
|
|
valtypes,
|
|
argnames,
|
|
param.values,
|
|
a_id,
|
|
param.marks,
|
|
scopenum,
|
|
param_index,
|
|
)
|
|
newcalls.append(newcallspec)
|
|
self._calls = newcalls
|
|
|
|
def addcall(self, funcargs=None, id=NOTSET, param=NOTSET):
|
|
""" Add a new call to the underlying test function during the collection phase of a test run.
|
|
|
|
.. deprecated:: 3.3
|
|
|
|
Use :meth:`parametrize` instead.
|
|
|
|
Note that request.addcall() is called during the test collection phase prior and
|
|
independently to actual test execution. You should only use addcall()
|
|
if you need to specify multiple arguments of a test function.
|
|
|
|
:arg funcargs: argument keyword dictionary used when invoking
|
|
the test function.
|
|
|
|
:arg id: used for reporting and identification purposes. If you
|
|
don't supply an `id` an automatic unique id will be generated.
|
|
|
|
:arg param: a parameter which will be exposed to a later fixture function
|
|
invocation through the ``request.param`` attribute.
|
|
"""
|
|
if self.config:
|
|
self.config.warn(
|
|
"C1", message=deprecated.METAFUNC_ADD_CALL, fslocation=None
|
|
)
|
|
assert funcargs is None or isinstance(funcargs, dict)
|
|
if funcargs is not None:
|
|
for name in funcargs:
|
|
if name not in self.fixturenames:
|
|
fail("funcarg %r not used in this function." % name)
|
|
else:
|
|
funcargs = {}
|
|
if id is None:
|
|
raise ValueError("id=None not allowed")
|
|
if id is NOTSET:
|
|
id = len(self._calls)
|
|
id = str(id)
|
|
if id in self._ids:
|
|
raise ValueError("duplicate id %r" % id)
|
|
self._ids.add(id)
|
|
|
|
cs = CallSpec2(self)
|
|
cs.setall(funcargs, id, param)
|
|
self._calls.append(cs)
|
|
|
|
|
|
def _find_parametrized_scope(argnames, arg2fixturedefs, indirect):
|
|
"""Find the most appropriate scope for a parametrized call based on its arguments.
|
|
|
|
When there's at least one direct argument, always use "function" scope.
|
|
|
|
When a test function is parametrized and all its arguments are indirect
|
|
(e.g. fixtures), return the most narrow scope based on the fixtures used.
|
|
|
|
Related to issue #1832, based on code posted by @Kingdread.
|
|
"""
|
|
from _pytest.fixtures import scopes
|
|
|
|
indirect_as_list = isinstance(indirect, (list, tuple))
|
|
all_arguments_are_fixtures = indirect is True or indirect_as_list and len(
|
|
indirect
|
|
) == argnames
|
|
if all_arguments_are_fixtures:
|
|
fixturedefs = arg2fixturedefs or {}
|
|
used_scopes = [fixturedef[0].scope for name, fixturedef in fixturedefs.items()]
|
|
if used_scopes:
|
|
# Takes the most narrow scope from used fixtures
|
|
for scope in reversed(scopes):
|
|
if scope in used_scopes:
|
|
return scope
|
|
|
|
return "function"
|
|
|
|
|
|
def _idval(val, argname, idx, idfn, config=None):
|
|
if idfn:
|
|
s = None
|
|
try:
|
|
s = idfn(val)
|
|
except Exception:
|
|
# See issue https://github.com/pytest-dev/pytest/issues/2169
|
|
import warnings
|
|
|
|
msg = "Raised while trying to determine id of parameter %s at position %d." % (
|
|
argname, idx
|
|
)
|
|
msg += "\nUpdate your code as this will raise an error in pytest-4.0."
|
|
warnings.warn(msg, DeprecationWarning)
|
|
if s:
|
|
return ascii_escaped(s)
|
|
|
|
if config:
|
|
hook_id = config.hook.pytest_make_parametrize_id(
|
|
config=config, val=val, argname=argname
|
|
)
|
|
if hook_id:
|
|
return hook_id
|
|
|
|
if isinstance(val, STRING_TYPES):
|
|
return ascii_escaped(val)
|
|
elif isinstance(val, (float, int, bool, NoneType)):
|
|
return str(val)
|
|
elif isinstance(val, REGEX_TYPE):
|
|
return ascii_escaped(val.pattern)
|
|
elif enum is not None and isinstance(val, enum.Enum):
|
|
return str(val)
|
|
elif (isclass(val) or isfunction(val)) and hasattr(val, "__name__"):
|
|
return val.__name__
|
|
return str(argname) + str(idx)
|
|
|
|
|
|
def _idvalset(idx, parameterset, argnames, idfn, ids, config=None):
|
|
if parameterset.id is not None:
|
|
return parameterset.id
|
|
if ids is None or (idx >= len(ids) or ids[idx] is None):
|
|
this_id = [
|
|
_idval(val, argname, idx, idfn, config)
|
|
for val, argname in zip(parameterset.values, argnames)
|
|
]
|
|
return "-".join(this_id)
|
|
else:
|
|
return ascii_escaped(ids[idx])
|
|
|
|
|
|
def idmaker(argnames, parametersets, idfn=None, ids=None, config=None):
|
|
ids = [
|
|
_idvalset(valindex, parameterset, argnames, idfn, ids, config)
|
|
for valindex, parameterset in enumerate(parametersets)
|
|
]
|
|
if len(set(ids)) != len(ids):
|
|
# The ids are not unique
|
|
duplicates = [testid for testid in ids if ids.count(testid) > 1]
|
|
counters = collections.defaultdict(lambda: 0)
|
|
for index, testid in enumerate(ids):
|
|
if testid in duplicates:
|
|
ids[index] = testid + str(counters[testid])
|
|
counters[testid] += 1
|
|
return ids
|
|
|
|
|
|
def show_fixtures_per_test(config):
|
|
from _pytest.main import wrap_session
|
|
|
|
return wrap_session(config, _show_fixtures_per_test)
|
|
|
|
|
|
def _show_fixtures_per_test(config, session):
|
|
import _pytest.config
|
|
|
|
session.perform_collect()
|
|
curdir = py.path.local()
|
|
tw = _pytest.config.create_terminal_writer(config)
|
|
verbose = config.getvalue("verbose")
|
|
|
|
def get_best_relpath(func):
|
|
loc = getlocation(func, curdir)
|
|
return curdir.bestrelpath(loc)
|
|
|
|
def write_fixture(fixture_def):
|
|
argname = fixture_def.argname
|
|
if verbose <= 0 and argname.startswith("_"):
|
|
return
|
|
if verbose > 0:
|
|
bestrel = get_best_relpath(fixture_def.func)
|
|
funcargspec = "{} -- {}".format(argname, bestrel)
|
|
else:
|
|
funcargspec = argname
|
|
tw.line(funcargspec, green=True)
|
|
fixture_doc = fixture_def.func.__doc__
|
|
if fixture_doc:
|
|
write_docstring(tw, fixture_doc)
|
|
else:
|
|
tw.line(" no docstring available", red=True)
|
|
|
|
def write_item(item):
|
|
try:
|
|
info = item._fixtureinfo
|
|
except AttributeError:
|
|
# doctests items have no _fixtureinfo attribute
|
|
return
|
|
if not info.name2fixturedefs:
|
|
# this test item does not use any fixtures
|
|
return
|
|
tw.line()
|
|
tw.sep("-", "fixtures used by {}".format(item.name))
|
|
tw.sep("-", "({})".format(get_best_relpath(item.function)))
|
|
# dict key not used in loop but needed for sorting
|
|
for _, fixturedefs in sorted(info.name2fixturedefs.items()):
|
|
assert fixturedefs is not None
|
|
if not fixturedefs:
|
|
continue
|
|
# last item is expected to be the one used by the test item
|
|
write_fixture(fixturedefs[-1])
|
|
|
|
for session_item in session.items:
|
|
write_item(session_item)
|
|
|
|
|
|
def showfixtures(config):
|
|
from _pytest.main import wrap_session
|
|
|
|
return wrap_session(config, _showfixtures_main)
|
|
|
|
|
|
def _showfixtures_main(config, session):
|
|
import _pytest.config
|
|
|
|
session.perform_collect()
|
|
curdir = py.path.local()
|
|
tw = _pytest.config.create_terminal_writer(config)
|
|
verbose = config.getvalue("verbose")
|
|
|
|
fm = session._fixturemanager
|
|
|
|
available = []
|
|
seen = set()
|
|
|
|
for argname, fixturedefs in fm._arg2fixturedefs.items():
|
|
assert fixturedefs is not None
|
|
if not fixturedefs:
|
|
continue
|
|
for fixturedef in fixturedefs:
|
|
loc = getlocation(fixturedef.func, curdir)
|
|
if (fixturedef.argname, loc) in seen:
|
|
continue
|
|
seen.add((fixturedef.argname, loc))
|
|
available.append(
|
|
(
|
|
len(fixturedef.baseid),
|
|
fixturedef.func.__module__,
|
|
curdir.bestrelpath(loc),
|
|
fixturedef.argname,
|
|
fixturedef,
|
|
)
|
|
)
|
|
|
|
available.sort()
|
|
currentmodule = None
|
|
for baseid, module, bestrel, argname, fixturedef in available:
|
|
if currentmodule != module:
|
|
if not module.startswith("_pytest."):
|
|
tw.line()
|
|
tw.sep("-", "fixtures defined from %s" % (module,))
|
|
currentmodule = module
|
|
if verbose <= 0 and argname[0] == "_":
|
|
continue
|
|
if verbose > 0:
|
|
funcargspec = "%s -- %s" % (argname, bestrel)
|
|
else:
|
|
funcargspec = argname
|
|
tw.line(funcargspec, green=True)
|
|
loc = getlocation(fixturedef.func, curdir)
|
|
doc = fixturedef.func.__doc__ or ""
|
|
if doc:
|
|
write_docstring(tw, doc)
|
|
else:
|
|
tw.line(" %s: no docstring available" % (loc,), red=True)
|
|
|
|
|
|
def write_docstring(tw, doc):
|
|
INDENT = " "
|
|
doc = doc.rstrip()
|
|
if "\n" in doc:
|
|
firstline, rest = doc.split("\n", 1)
|
|
else:
|
|
firstline, rest = doc, ""
|
|
|
|
if firstline.strip():
|
|
tw.line(INDENT + firstline.strip())
|
|
|
|
if rest:
|
|
for line in dedent(rest).split("\n"):
|
|
tw.write(INDENT + line + "\n")
|
|
|
|
|
|
class Function(FunctionMixin, nodes.Item, fixtures.FuncargnamesCompatAttr):
|
|
""" a Function Item is responsible for setting up and executing a
|
|
Python test function.
|
|
"""
|
|
_genid = None
|
|
# disable since functions handle it themselfes
|
|
_ALLOW_MARKERS = False
|
|
|
|
def __init__(
|
|
self,
|
|
name,
|
|
parent,
|
|
args=None,
|
|
config=None,
|
|
callspec=None,
|
|
callobj=NOTSET,
|
|
keywords=None,
|
|
session=None,
|
|
fixtureinfo=None,
|
|
originalname=None,
|
|
):
|
|
super(Function, self).__init__(name, parent, config=config, session=session)
|
|
self._args = args
|
|
if callobj is not NOTSET:
|
|
self.obj = callobj
|
|
|
|
self.keywords.update(self.obj.__dict__)
|
|
self.own_markers.extend(get_unpacked_marks(self.obj))
|
|
if callspec:
|
|
self.callspec = callspec
|
|
# this is total hostile and a mess
|
|
# keywords are broken by design by now
|
|
# this will be redeemed later
|
|
for mark in callspec.marks:
|
|
# feel free to cry, this was broken for years before
|
|
# and keywords cant fix it per design
|
|
self.keywords[mark.name] = mark
|
|
self.own_markers.extend(callspec.marks)
|
|
if keywords:
|
|
self.keywords.update(keywords)
|
|
|
|
if fixtureinfo is None:
|
|
fixtureinfo = self.session._fixturemanager.getfixtureinfo(
|
|
self.parent, self.obj, self.cls, funcargs=not self._isyieldedfunction()
|
|
)
|
|
self._fixtureinfo = fixtureinfo
|
|
self.fixturenames = fixtureinfo.names_closure
|
|
self._initrequest()
|
|
|
|
#: original function name, without any decorations (for example
|
|
#: parametrization adds a ``"[...]"`` suffix to function names).
|
|
#:
|
|
#: .. versionadded:: 3.0
|
|
self.originalname = originalname
|
|
|
|
def _initrequest(self):
|
|
self.funcargs = {}
|
|
if self._isyieldedfunction():
|
|
assert not hasattr(
|
|
self, "callspec"
|
|
), "yielded functions (deprecated) cannot have funcargs"
|
|
else:
|
|
if hasattr(self, "callspec"):
|
|
callspec = self.callspec
|
|
assert not callspec.funcargs
|
|
self._genid = callspec.id
|
|
if hasattr(callspec, "param"):
|
|
self.param = callspec.param
|
|
self._request = fixtures.FixtureRequest(self)
|
|
|
|
@property
|
|
def function(self):
|
|
"underlying python 'function' object"
|
|
return getattr(self.obj, "im_func", self.obj)
|
|
|
|
def _getobj(self):
|
|
name = self.name
|
|
i = name.find("[") # parametrization
|
|
if i != -1:
|
|
name = name[:i]
|
|
return getattr(self.parent.obj, name)
|
|
|
|
@property
|
|
def _pyfuncitem(self):
|
|
"(compatonly) for code expecting pytest-2.2 style request objects"
|
|
return self
|
|
|
|
def _isyieldedfunction(self):
|
|
return getattr(self, "_args", None) is not None
|
|
|
|
def runtest(self):
|
|
""" execute the underlying test function. """
|
|
self.ihook.pytest_pyfunc_call(pyfuncitem=self)
|
|
|
|
def setup(self):
|
|
super(Function, self).setup()
|
|
fixtures.fillfixtures(self)
|
|
|
|
|
|
class FunctionDefinition(Function):
|
|
"""
|
|
internal hack until we get actual definition nodes instead of the
|
|
crappy metafunc hack
|
|
"""
|
|
|
|
def runtest(self):
|
|
raise RuntimeError("function definitions are not supposed to be used")
|
|
|
|
setup = runtest
|