[minor] Rename loaders to loader testenv

Author: stephane-caron

.github/workflows/test.yml

@@ -58,7 +58,7 @@ jobs:
               run: |
                   tox -e lint
 
-    loaders:
+    loader:
         name: "Loader: ${{ matrix.loader }}"
         runs-on: ubuntu-latest
 
@@ -83,6 +83,6 @@ jobs:
 
             - name: "Run loader tests"
               run: |
-                  tox -e loaders
+                  tox -e loader
               env:
                   LOADER: ${{ matrix.loader }}

tests/loaders/test_mujoco.py

@@ -19,9 +19,9 @@
 import unittest
 
 from robot_descriptions._descriptions import DESCRIPTIONS
-
 from robot_descriptions.loaders.mujoco import load_robot_description
 
+
 class TestMuJoCo(unittest.TestCase):
 
     """
@@ -50,6 +50,7 @@ def test(self):
 
         return test
 
+
 for name, description in DESCRIPTIONS.items():
     if description.has_mjcf:
         setattr(

tox.ini

@@ -51,7 +51,7 @@ commands =
     pylint robot_descriptions --exit-zero --rcfile={toxinidir}/tox.ini
     mypy robot_descriptions --ignore-missing-imports
 
-[testenv:loaders]
+[testenv:loader]
 deps =
     GitPython >=3.1.18
     pytest