ci: Test against live mreg instance.

* .github/workflows/test.yml (jobs)[integration]: New job.

.github/workflows/test.yml

@@ -3,7 +3,7 @@ on: [push, pull_request]
 name: CI
 jobs:
   test:
-    name: Test
+    name: Fixtures
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
@@ -35,3 +35,66 @@ jobs:
           pip install -e .
       - name: Test
         run: mreg-cli --playback testsuite-result.json
+
+  integration:
+    name: Integration
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        postgresql-version: [11, 12, 13]
+    services:
+      postgres:
+        image: postgres:${{ matrix.postgresql-version }}
+        env:
+          POSTGRES_USER: mreg
+          POSTGRES_DB: mreg
+          POSTGRES_PASSWORD: postgres
+        # Add health checks and trick it into creating the citext
+        # extension when ready.
+        options: >-
+          --health-cmd "pg_isready && PGPASSWORD=$POSTGRES_PASSWORD psql -U mreg -c 'CREATE EXTENSION IF NOT EXISTS citext;' mreg || exit 1"
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+      mreg:
+        image: ghcr.io/unioslo/mreg:latest
+        options: >-
+          --name mreg
+        env:
+          GUNICORN_ARGS: --bind=0.0.0.0
+          MREG_DB_HOST: postgres
+          MREG_DB_PASSWORD: postgres
+        ports:
+          - 8000:8000
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Cache pip
+        uses: actions/cache@v2
+        with:
+          path: ~/.cache/pip
+          key: v1-pip-${{ runner.os }}-${{ hashFiles('requirements-*.txt') }}
+          restore-keys: |
+            v1-pip-${{ runner.os }}
+            v1-pip-
+      - name: Install
+        run: |
+          pip install -r requirements.txt
+          pip install -e .
+      - name: Create superuser
+        run: |
+          echo -ne '
+          from django.conf import settings
+          from django.contrib.auth import get_user_model
+          from django.contrib.auth.models import Group
+          user = get_user_model().objects.create_user(
+            username="ci",password="test")
+          user.groups.clear()
+          su = getattr(settings, "SUPERUSER_GROUP", None)
+          group, created = Group.objects.get_or_create(name=su)
+          group.user_set.add(user)
+          ' | docker exec -i mreg python /app/manage.py shell
+      - name: Run tests
+        run: >
+          echo -ne 'test\nsource testsuite\nquit\n'
+          | mreg-cli -u ci -d example.org --url http://localhost:8000