Fix tests and add github CI

.github/workflows/pythonapp.yml

@@ -0,0 +1,45 @@
+name: Python application
+
+on: [push]
+
+jobs:
+  build:
+    name: Test on Python ${{ matrix.python-version }} and ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
+        os: [ubuntu-latest]
+      fail-fast: false
+    timeout-minutes: 10
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+        architecture: x64
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip wheel
+        pip install -r requirements-test.txt
+    - name: Test with pytest
+      env:
+        PYTHONPATH: .
+      run: |
+        pytest --durations=10 --cov dockerctx tests
+    - name: Extract branch name
+      shell: bash
+      run: echo "##[set-output name=branch;]$(echo ${GITHUB_REF#refs/heads/})"
+      id: extract_branch
+    - name: Upload coverage
+      env:
+          COVERALLS_REPO_TOKEN: ${{ secrets.COVERALLS_REPO_TOKEN }}
+          # This will only work if we also send a "done" event after the
+          # whole job is finished.
+          # See: https://docs.coveralls.io/parallel-build-webhook
+          #COVERALLS_PARALLEL: "true"
+          CI_BRANCH: ${{ steps.extract_branch.outputs.branch }}
+      if: matrix.os == 'ubuntu-latest'
+      run: |
+        coveralls

dockerctx.py

@@ -83,9 +83,16 @@ def new_container(
         else:
             logger.info('Stopping container %s', name)
             # TODO: container.stop() does not seem to work here (e.g. for postgres)
-            container.kill()
+            try:
+                container.stop(timeout=1)
+            except docker.errors.APIError as e:
+                logger.error('Error stopping container: %s', e)
+
             logger.info('Removing container %s', name)
-            container.remove()
+            try:
+                container.remove(force=True)
+            except docker.errors.APIError as e:
+                logger.error('Error removing container: %s', e)
 
 
 def accepting_connections(host, port, timeout=20):

tests/conftest.py

@@ -0,0 +1,4 @@
+import logging
+
+
+logging.basicConfig(level=logging.DEBUG)

tests/test_pg.py

@@ -72,12 +72,14 @@ def test_pg():
     with new_container(
             image_name='postgres:alpine',
             ports={'5432/tcp': port},
-            ready_test=lambda: pg_ready('localhost', port),
+            ready_test=lambda: pg_ready('127.0.0.1', port, timeout=20000),
             # Travis CI fails otherwise :`(
-            docker_api_version='1.24') as container:
+            docker_api_version='1.24',
+            environment={'POSTGRES_PASSWORD': 'password'}
+    ) as container:
         logger.debug(container.name)
 
-        url = "postgres://postgres@localhost:%d/mydb" % port
+        url = "postgresql://postgres:password@127.0.0.1:%d/mydb" % port
         logger.info('create engine')
         if not database_exists(url):
             logger.info('create database')