Don't put test requirements in setup.py

test_require and test_suite are not meant to be used that way.
Rely on poetry and tox for creating test environments instead.
Also, tox should be installed separately, not with Poetry.

Author: Cito

.gitignore

@@ -14,6 +14,8 @@
 build
 dist
 docs/_build
+pip-wheel-metadata
+wheels
 
 play
 

poetry.lock

@@ -29,20 +29,19 @@ packages = [
 python = "^3.6"
 
 [tool.poetry.dev-dependencies]
-pytest = "^4.6"
-pytest-asyncio = "^0.10"
+pytest = "^5"
+pytest-asyncio = ">=0.10"
 pytest-cov = "^2.7"
-pytest-describe = "^0.12"
+pytest-describe = ">=0.12"
 pyyaml = "^5.1"
-black = "^19.3b0"
+black = ">=19.3b0"
 flake8 = "^3.7"
-mypy = "^0.711"
-tox = "^3.13"
-codecov = "^2.0"
+mypy = ">=0.711"
+codecov = "^2"
 sphinx = "^2.1"
-sphinx_rtd_theme = "^0.4"
-check-manifest = "^0.38"
-bump2version = "^0.5"
+sphinx_rtd_theme = ">=0.4"
+check-manifest = ">=0.39"
+bump2version = ">=0.5"
 
 [tool.black]
 target-version = ['py36', 'py37', 'py38']

pyproject.toml

@@ -3,4 +3,3 @@ python-tag = py3
 
 [aliases]
 test = pytest
-

setup.cfg

@@ -19,34 +19,20 @@
     author="Christoph Zwerschke",
     author_email="cito@online.de",
     license="MIT license",
-    # PEP-561: https://www.python.org/dev/peps/pep-0561/
-    package_data={"graphql": ["py.typed"]},
     classifiers=[
         "Development Status :: 5 - Production/Stable",
         "Intended Audience :: Developers",
-        'Topic :: Software Development :: Libraries',
+        "Topic :: Software Development :: Libraries",
         "License :: OSI Approved :: MIT License",
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
     ],
     install_requires=[],
     python_requires=">=3.6",
-    test_suite="tests",
-    tests_require=[
-        "pytest",
-        "pytest-asyncio",
-        "pytest-cov",
-        "pytest-describe",
-        "black",
-        "flake8",
-        "mypy",
-        "tox",
-        "codecov",
-        "check-manifest",
-        "bump2version",
-    ],
     packages=find_packages(include=["graphql"]),
+    # PEP-561: https://www.python.org/dev/peps/pep-0561/
+    package_data={"graphql": ["py.typed"]},
     include_package_data=True,
     zip_safe=False,
 )

setup.py

@@ -3,43 +3,43 @@ envlist = py{36,37}, black, flake8, mypy, docs, manifest
 
 [testenv:black]
 basepython = python3.7
-deps = black
+deps = black>=19.3b0
 commands  =
     black graphql tests --check
 
 [testenv:flake8]
 basepython = python3.7
-deps = flake8
+deps = flake8>=3.7,<4
 commands =
     flake8 graphql tests
 
 [testenv:mypy]
 basepython = python3.7
-deps = mypy
+deps = mypy>=0.711
 commands =
     mypy graphql
 
 [testenv:docs]
 basepython = python3.7
 deps =
-    sphinx
-    sphinx_rtd_theme
+    sphinx>=2.1,<3
+    sphinx_rtd_theme>=0.4
 commands =
     sphinx-build -b html -nEW docs docs/_build/html
 
 [testenv:manifest]
 basepython = python3.7
-deps = check-manifest
+deps = check-manifest>=0.39
 commands =
     check-manifest -v
 
 [testenv]
 setenv =
     PYTHONPATH = {toxinidir}
 deps =
-    pytest
-    pytest-asyncio
-    pytest-cov
-    pytest-describe
+    pytest>=5.0,<6
+    pytest-asyncio>=0.10
+    pytest-cov>=2.7,<3
+    pytest-describe>=0.12
 commands =
     pytest tests {posargs}