add integration test github action

.github/workflows/integration_test.yaml

@@ -0,0 +1,32 @@
+name: integration tests
+on:
+  schedule:
+    - cron: '0 0 * * SUN'  # run every Sunday at midnight
+jobs:
+  test integration:
+    runs-on: ubuntu-latest
+    strategy:
+      python-version: 3.8
+    env:
+      NOSE_SHOW_SKIPPED: 1
+      PY_COLOR: 1
+      INTEGRATION_TEST: 1
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python 3.8
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.8
+      - uses: actions/cache@v1
+        with:
+          path: ~/.cache/pip
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+          restore-keys: |
+            ${{ runner.os }}-pip-
+      - name: Install base dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install tox
+      - name: Test with tox
+        run: |
+          tox -e py38-test

tox.ini

@@ -37,6 +37,7 @@ files = beets beetsplug beet test setup.py docs
 [testenv]
 passenv =
     NOSE_SHOW_SKIPPED # Undocumented feature of nose-show-skipped.
+    INTEGRATION_TEST  # set to 1 for integration tests
 deps =
     {test,cov}: {[_test]deps}
     py27: pathlib