Add tox.ini and GitHub workflow for running examples/validate.py (#292)

This makes it easy to run the validation script locally as well as
for all pushes and pull requests. The tox.ini file can also act as
a platform for running other kinds of validations.

Author: magnusbaeck

.github/workflows/test.yml

@@ -0,0 +1,33 @@
+# Copyright 2022 Axis Communications AB.
+# For a full list of individual contributors, please see the commit history.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: Test
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  run-tests:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Install dependencies
+        run: pip install tox
+
+      - name: Run tox
+        run: tox

tox.ini

@@ -0,0 +1,26 @@
+# Copyright 2022 Axis Communications AB.
+# For a full list of individual contributors, please see the commit history.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+[tox]
+envlist = validate
+skip_missing_interpreters = True
+skipsdist = True
+
+[testenv]
+basepython = python3
+
+[testenv:validate]
+deps = -rrequirements.txt
+commands = python3 examples/validate.py