✅ test for pypy versions up to 3.9

Also makes sure the module can be imported after installing.
Also up actions/checkout and actions/setup-python versions.

Author: AndreMiras

.github/workflows/tests.yml

@@ -7,12 +7,26 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python: ["2.7", "3.6", "3.7", "3.8", "3.9", "3.10"]
+        python: ["2.7", "3.6", "3.7", "3.8", "3.9", "3.10", pypy-3.7, pypy-3.8, pypy-3.9]
 
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
         with:
           python-version: ${{ matrix.python }}
       - run: pip install .[test]
       - run: pytest
+
+  install:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python: ["2.7", "3.6", "3.7", "3.8", "3.9", "3.10", pypy-3.7, pypy-3.8, pypy-3.9]
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python }}
+      - run: pip install .
+      - run: python -c "from lru import LRU"

setup.py

@@ -21,6 +21,11 @@
         'Programming Language :: C',
         'Programming Language :: Python :: 2',
         'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 3.7',
+        'Programming Language :: Python :: 3.8',
+        'Programming Language :: Python :: 3.9',
+        'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: Implementation :: CPython',
         'Topic :: Software Development :: Libraries :: Python Modules',
         ],