ci: re-enable integration tests with mysql-*operator (#1013)

* Only try to edit `requirements.txt` if it exists
* If `requirements.txt` does not exist, then assume that the requirement is in `pyproject.toml` and edit that instead
* Enable the integration tests with `mysql-operator` and `mysql-k8s-operator` again
* Remove the `static-charm` tox runs from the DB workflow, as none of the DB operators have one defined
* Pin `tox` to anything compatible with 4.2

Fixes #987.

Author: tonyandrewmeyer

.github/workflows/db-charm-tests.yaml

@@ -11,26 +11,35 @@ jobs:
         charm-repo:
           - "canonical/postgresql-operator"
           - "canonical/postgresql-k8s-operator"
-# TODO: uncomment once we've fixed https://github.com/canonical/operator/issues/987
-#          - "canonical/mysql-operator"
-#          - "canonical/mysql-k8s-operator"
+          - "canonical/mysql-operator"
+          - "canonical/mysql-k8s-operator"
 
     steps:
       - name: Checkout the ${{ matrix.charm-repo }} repository
         uses: actions/checkout@v3
         with:
           repository: ${{ matrix.charm-repo }}
 
+      - name: Checkout the operator repository
+        uses: actions/checkout@v3
+        with:
+          path: myops
+
+      - name: Install patch dependencies
+        run: pip install poetry~=1.6
+
       - name: Update 'ops' dependency in test charm to latest
         run: |
-          sed -i -e "/^ops[ ><=]/d" -e "/canonical\/operator/d" -e "/#egg=ops/d" requirements.txt
-          echo -e "\ngit+$GITHUB_SERVER_URL/$GITHUB_REPOSITORY@$GITHUB_SHA#egg=ops" >> requirements.txt
+          if [ -e "requirements.txt" ]; then
+            sed -i -e "/^ops[ ><=]/d" -e "/canonical\/operator/d" -e "/#egg=ops/d" requirements.txt
+            echo -e "\ngit+$GITHUB_SERVER_URL/$GITHUB_REPOSITORY@$GITHUB_SHA#egg=ops" >> requirements.txt
+          else
+            sed -i -e "s/^ops[ ><=].*/ops = {path = \"myops\"}/" pyproject.toml
+            poetry lock
+          fi
 
       - name: Install dependencies
-        run: pip install tox==4.2.8
+        run: pip install tox~=4.2
 
       - name: Run the charm's unit tests
         run: tox -vve unit
-
-      - name: Run the charm's static analysis checks
-        run: tox -vve static-charm

.github/workflows/framework-tests.yaml

@@ -12,7 +12,7 @@ jobs:
         uses: actions/setup-python@v2
 
       - name: Install tox
-        run: pip install tox
+        run: pip install tox~=4.2
 
       - name: Run linting
         run: tox -e lint
@@ -26,7 +26,7 @@ jobs:
         uses: actions/setup-python@v2
 
       - name: Install tox
-        run: pip install tox
+        run: pip install tox~=4.2
 
       - name: Run static type checks
         run: tox -e static
@@ -47,7 +47,7 @@ jobs:
           python-version: ${{ matrix.python-version }}
 
       - name: Install tox
-        run: pip install tox
+        run: pip install tox~=4.2
 
       - name: Run unit tests
         run: tox -e unit
@@ -73,7 +73,7 @@ jobs:
           go-version: "1.20"
 
       - name: Install tox
-        run: pip install tox
+        run: pip install tox~=4.2
 
       - name: Install Pebble
         run: go install github.com/canonical/pebble/cmd/pebble@latest
@@ -88,7 +88,7 @@ jobs:
       - name: Run Real pebble tests
         run: tox -e unit -- -k RealPebble
         env:
-          RUN_REAL_PEBBLE_TESTS: 1 
+          RUN_REAL_PEBBLE_TESTS: 1
           PEBBLE: /tmp/pebble
 
   pip-install:
@@ -106,3 +106,4 @@ jobs:
       - name: Test 'pip install'
         # Shouldn't happen, but pip install will fail if ls returns multiple lines
         run: pip install $(ls dist/ops*.gz)
+

.github/workflows/observability-charm-tests.yaml

@@ -26,7 +26,7 @@ jobs:
           echo -e "\ngit+$GITHUB_SERVER_URL/$GITHUB_REPOSITORY@$GITHUB_SHA#egg=ops" >> requirements.txt
 
       - name: Install dependencies
-        run: pip install tox
+        run: pip install tox~=4.2
 
       - name: Run the charm's unit tests
         run: tox -vve unit