Add Python 3.10 to GitHub CI (#199)

* Add Python 3.10 to GitHub CI

* Apply suggestions from code review

* Update .github/workflows/python-package.yml

.github/workflows/python-package.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['2.7', '3.5', '3.6', '3.7', '3.8', '3.9']
+        python-version: ['2.7', '3.5', '3.6', '3.7', '3.8', '3.9', '3.10']
 
     steps:
     - uses: actions/checkout@v2
@@ -29,15 +29,15 @@ jobs:
         python -m pip install flake8 pylint coveralls cryptography libusb1>=1.0.16 pycryptodome
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
         pip install .
-        if python --version 2>&1 | grep -q "Python 3.7" || python --version 2>&1 | grep -q "Python 3.8" || python --version 2>&1 | grep -q "Python 3.9"; then pip install aiofiles; fi
+        if python --version 2>&1 | grep -q "Python 3.7" || python --version 2>&1 | grep -q "Python 3.8" || python --version 2>&1 | grep -q "Python 3.9" || python --version 2>&1 | grep -q "Python 3.10"; then pip install aiofiles; fi
     - name: Lint with pylint and flake8
       run: |
         if python --version 2>&1 | grep -q "Python 2" || python --version 2>&1 | grep -q "Python 3.5" || python --version 2>&1 | grep -q "Python 3.6"; then flake8 adb_shell/ --exclude="adb_shell/adb_device_async.py,adb_shell/transport/base_transport_async.py,adb_shell/transport/tcp_transport_async.py" && pylint --ignore="adb_device_async.py,base_transport_async.py,tcp_transport_async.py" adb_shell/; fi
-        if python --version 2>&1 | grep -q "Python 3.7" || python --version 2>&1 | grep -q "Python 3.8" || python --version 2>&1 | grep -q "Python 3.9"; then flake8 adb_shell/ && pylint adb_shell/; fi
+        if python --version 2>&1 | grep -q "Python 3.7" || python --version 2>&1 | grep -q "Python 3.8" || python --version 2>&1 | grep -q "Python 3.9" || python --version 2>&1 | grep -q "Python 3.10"; then flake8 adb_shell/ && pylint adb_shell/; fi
     - name: Test with unittest
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         COVERALLS_SERVICE_NAME: github
       run: |
         if python --version 2>&1 | grep -q "Python 2" || python --version 2>&1 | grep -q "Python 3.5" || python --version 2>&1 | grep -q "Python 3.6" ; then for synctest in $(cd tests && ls test*.py | grep -v async); do python -m unittest discover -s tests/ -t . -p "$synctest" || exit 1; done; fi
-        if python --version 2>&1 | grep -q "Python 3.7" || python --version 2>&1 | grep -q "Python 3.8" || python --version 2>&1 | grep -q "Python 3.9"; then coverage run --source adb_shell -m unittest discover -s tests/ -t . && coverage report -m && coveralls; fi
+        if python --version 2>&1 | grep -q "Python 3.7" || python --version 2>&1 | grep -q "Python 3.8" || python --version 2>&1 | grep -q "Python 3.9" || python --version 2>&1 | grep -q "Python 3.10"; then coverage run --source adb_shell -m unittest discover -s tests/ -t . && coverage report -m && coveralls; fi

tests/async_wrapper.py

@@ -4,8 +4,12 @@
 
 
 def _await(coro):
+    """Create a new event loop, run the coroutine, then close the event loop."""
+    loop = asyncio.new_event_loop()
+
     with warnings.catch_warnings(record=True) as warns:
-        ret = asyncio.get_event_loop().run_until_complete(coro)
+        ret = loop.run_until_complete(coro)
+        loop.close()
 
         if warns:
             raise RuntimeError