Add workflow and poetry support

.github/workflows/ci.yaml

@@ -0,0 +1,88 @@
+# Copyright 2022 Canonical Ltd.
+# See LICENSE file for licensing details.
+name: Tests
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+on:
+  pull_request:
+  schedule:
+    - cron: '53 0 * * *' # Daily at 00:53 UTC
+  # Triggered on push to branch "main" by .github/workflows/release.yaml
+  workflow_call:
+
+jobs:
+  lint:
+    name: Lint
+    uses: canonical/data-platform-workflows/.github/workflows/[email protected]
+
+  unit-test:
+    name: Unit test charm
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Install tox & poetry
+        run: |
+          pipx install tox
+          pipx install poetry
+      - name: Run tests
+        run: tox run -e unit
+
+
+  lib-check:
+    name: Check libraries
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - run: |
+          # Workaround for https://github.com/canonical/charmcraft/issues/1389#issuecomment-1880921728
+          touch requirements.txt
+      - name: Check libs
+        uses: canonical/charming-actions/[email protected]
+        with:
+          credentials: ${{ secrets.CHARMHUB_TOKEN }}
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          use-labels: false
+          fail-build: ${{ github.event_name == 'pull_request' }}
+
+  build:
+    name: Build charm
+    strategy:
+      fail-fast: false
+      matrix:
+        path:
+        - .
+        - ./tests/integration/relations/opensearch_provider/application-charm/
+    uses: canonical/data-platform-workflows/.github/workflows/[email protected]
+    with:
+      path-to-charm-directory: ${{ matrix.path }}
+      cache: true
+
+  integration-test:
+    name: Integration test charm
+    needs:
+      - lint
+      - unit-test
+      - build
+    uses: canonical/data-platform-workflows/.github/workflows/[email protected]
+    with:
+      artifact-prefix: ${{ needs.build.outputs.artifact-prefix }}
+      cloud: lxd
+      juju-snap-channel: 3.3/stable
+    secrets:
+      integration-test: |
+        {
+          "AWS_ACCESS_KEY": "${{ secrets.AWS_ACCESS_KEY }}",
+          "AWS_SECRET_KEY": "${{ secrets.AWS_SECRET_KEY }}",
+          "GCP_ACCESS_KEY": "${{ secrets.GCP_ACCESS_KEY }}",
+          "GCP_SECRET_KEY": "${{ secrets.GCP_SECRET_KEY }}",
+          "GCP_SERVICE_ACCOUNT": "${{ secrets.GCP_SERVICE_ACCOUNT }}",
+        }