chore: convert to setup.cfg and pytest

MANIFEST.in

@@ -1,7 +1,9 @@
-include CHANGELOG LICENSE README.rst
+include AUTHORS CHANGELOG LICENSE *.rst
 recursive-include docs *
 recursive-exclude docs/build *
 recursive-include mezzanine *
 recursive-exclude */project_template/static *
 global-exclude __pycache__
 global-exclude *.py[co]
+prune .tx
+prune tests

mezzanine/utils/tests.py

@@ -1,4 +1,3 @@
-from _ast import PyCF_ONLY_AST
 import os
 from shutil import copyfile, copytree
 
@@ -12,31 +11,6 @@
 from mezzanine.utils.importing import path_for_import
 
 
-# Ignore these warnings in pyflakes - if added to, please comment why.
-IGNORE_ERRORS = (
-    # Used to version subpackages.
-    ".__version__' imported but unused",
-    # No caching fallback.
-    "redefinition of function 'nevercache'",
-    # Dummy fallback in templates for django-compressor.
-    "redefinition of function 'compress'",
-    # Fabic config fallback.
-    "redefinition of unused 'conf'",
-    # Fixing these would make the code ugiler IMO.
-    "continuation line",
-    "closing bracket does not match",
-    # Jython compatiblity.
-    "redefinition of unused 'Image",
-    # Django custom user compatibility.
-    "'get_user_model' imported but unused",
-    # lambdas are OK.
-    "do not assign a lambda",
-    # checks modules need to be imported to register check functions, they will
-    # be run by Django.
-    "'.checks' imported but unused",
-)
-
-
 class TestCase(BaseTestCase):
     """
     This is the base test case providing common features for all tests
@@ -110,93 +84,3 @@ def copy_test_to_media(module, name):
         copy(test_path, to_path)
     except OSError:
         pass
-
-
-def _run_checker_for_package(checker, package_name, extra_ignore=None):
-    """
-    Runs the checker function across every Python module in the
-    given package.
-    """
-    ignore_strings = IGNORE_ERRORS
-    if extra_ignore:
-        ignore_strings += extra_ignore
-    package_path = path_for_import(package_name)
-    for (root, dirs, files) in os.walk(str(package_path)):
-        for f in files:
-            if (
-                f == "local_settings.py"
-                or not f.endswith(".py")
-                or root.split(os.sep)[-1] in ["migrations"]
-            ):
-                # Ignore
-                continue
-            for warning in checker(os.path.join(root, f)):
-                for ignore in ignore_strings:
-                    if ignore in warning:
-                        break
-                else:
-                    yield warning.replace(package_path, package_name, 1)
-
-
-def run_pyflakes_for_package(package_name, extra_ignore=None):
-    """
-    If pyflakes is installed, run it across the given package name
-    returning any warnings found.
-    """
-    from pyflakes.checker import Checker
-
-    def pyflakes_checker(path):
-        with open(path, "U") as source_file:
-            source = source_file.read()
-        try:
-            tree = compile(source, path, "exec", PyCF_ONLY_AST)
-        except (SyntaxError, IndentationError) as value:
-            info = (path, value.lineno, value.args[0])
-            yield "Invalid syntax in %s:%d: %s" % info
-        else:
-            result = Checker(tree, path)
-            for warning in result.messages:
-                yield str(warning)
-
-    args = (pyflakes_checker, package_name, extra_ignore)
-    return _run_checker_for_package(*args)
-
-
-def run_pep8_for_package(package_name, extra_ignore=None):
-    """
-    If pep8 is installed, run it across the given package name
-    returning any warnings or errors found.
-    """
-    import pep8
-
-    class Checker(pep8.Checker):
-        """
-        Subclass pep8's Checker to hook into error reporting.
-        """
-
-        def __init__(self, *args, **kwargs):
-            super(Checker, self).__init__(*args, **kwargs)
-            self.report_error = self._report_error
-
-        def _report_error(self, line_number, offset, text, check):
-            """
-            Store pairs of line numbers and errors.
-            """
-            self.errors.append((line_number, text.split(" ", 1)[1]))
-
-        def check_all(self, *args, **kwargs):
-            """
-            Assign the errors attribute and return it after running.
-            """
-            self.errors = []
-            super(Checker, self).check_all(*args, **kwargs)
-            return self.errors
-
-    style_guide = pep8.StyleGuide(config_file="setup.cfg")
-
-    def pep8_checker(path):
-        for line_number, text in Checker(path, options=style_guide.options).check_all():
-            yield "%s:%s: %s" % (path, line_number, text)
-
-    args = (pep8_checker, package_name, extra_ignore)
-    return _run_checker_for_package(*args)

setup.cfg

@@ -1,11 +1,127 @@
-[wheel]
+[metadata]
+name = Mezzanine
+version = attr: mezzanine.__version__
+description = An open source content management platform built using the Django framework.
+long_description = file: README.rst
+long_description_content_type = text/x-rst
+author = Stephen McDonald
+author_email = [email protected]
+url = http://mezzanine.jupo.org/
+license = BSD
+license_file = LICENSE
+classifiers =
+    Development Status :: 5 - Production/Stable
+    Environment :: Web Environment
+    Framework :: Django
+    Intended Audience :: Developers
+    License :: OSI Approved :: BSD License
+    Operating System :: OS Independent
+    Programming Language :: Python
+    Programming Language :: Python :: 3
+    Programming Language :: Python :: 3.6
+    Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
+    Topic :: Internet :: WWW/HTTP
+    Topic :: Internet :: WWW/HTTP :: Dynamic Content
+    Topic :: Internet :: WWW/HTTP :: WSGI
+    Topic :: Software Development :: Libraries :: Application Frameworks
+    Topic :: Software Development :: Libraries :: Python Modules
+
+[options]
+python_requires = >=3.6, <3.9
+packages = find:
+include_package_data = True
+install_requires =
+    django-contrib-comments >= 1.9, <1.10
+    django >= 2.2, < 3.0
+    filebrowser_safe==1.0.0a1
+    grappelli_safe==1.0.0a1
+    tzlocal >= 2, <3
+    bleach >= 2, <4
+    beautifulsoup4 >= 4.5.3
+    future >= 0.9
+    requests >= 2.1.0, <3
+    requests-oauthlib >= 1.3, <2
+    pillow >= 7, <8
+    chardet
+
+[options.extras_require]
+testing =
+    tox >= 3, <4
+
+[entry_points.console_scripts]
+mezzanine-project = mezzanine.bin.mezzanine_project:create_project
+
+# Building
+
+[bdist_wheel]
 universal = 1
 
+# Testing
+
+[tox:tox]
+envlist =
+    py{36,37,38}-dj{22}
+    flake8
+    black
+    package
+
+[testenv]
+# Run test suite
+allowlist_externals =
+    find
+deps =
+    pytest-django >=3, <4
+    dj22: Django>=2.2, <3
+    djmaster: https://github.com/django/django/archive/master.tar.gz#egg=Django
+setenv =
+    PYTHONPATH={toxinidir}
+commands =
+    find {toxinidir} -type f -name "*.pyc" -delete
+    pytest --basetemp="{envtmpdir}" {posargs}
+
+[testenv:package]
+# Check package integrity and compatibility with PyPI
+allowlist_externals =
+    rm
+deps =
+    twine
+    check-manifest
+skip_install = true
+commands =
+    python setup.py -q sdist
+    twine check dist/*
+    rm -rf dist
+    check-manifest --ignore-bad-ideas '*.mo' {toxinidir}
+
+[testenv:black]
+# Lint with black
+skip_install = true
+deps =
+    black==20.8b1
+commands = black . --check --exclude "(\.tox|\.git|build|dist|migrations)"
+
+[testenv:format]
+# This env is not run by default. It's provided here for you
+# to easily autoformat code by running `tox -e format`
+skip_install = true
+deps =
+    black==20.8b1
+commands = black . --exclude "(\.tox|\.git|build|dist|migrations)"
+
+[testenv:flake8]
+# Lint with flake8
+skip_install = true
+deps =
+    flake8 >= 3, <4
+commands = flake8 .
+
 [flake8]
 # Configured to match black
 ignore =
     E203
     W503
+    E731
 max-line-length = 88
 exclude =
     migrations
@@ -15,3 +131,10 @@ exclude =
     *.egg-info
     build
     dist
+
+[gh-actions]
+# Connect GitHub Action matrices with tox envs
+python =
+    3.6: py36
+    3.7: py37
+    3.8: py38, flake8, black, package