DEV: Add test_requirements.txt to setup.py

An additional convenience for pip users for setting up a
numpydoc development environment.

1 files changed, 6 insertions, 0 deletions

diff --git a/setup.py b/setup.py
index 64e432f..ed1f1b8 100644
--- a/setup.py
+++ b/setup.py
@@ -46,6 +46,12 @@ setup(
     license="BSD",
     install_requires=["sphinx >= 1.6.5", 'Jinja2>=2.3'],
     python_requires=">=3.5",
+    extras_require={
+        "testing": [
+            req for req in read('test_requirements.txt').split('\n')
+            if not req.startswith('#')
+        ],
+    },
     package_data={'numpydoc': [
         'tests/test_*.py',
         'tests/tinybuild/Makefile',