Use playwright for acceptance testing

Playwright does not run on alpine linux therefore python slim must
be used for the development image

Author: Themitchell

Dockerfile

@@ -32,19 +32,62 @@ COPY pyproject.toml poetry.lock ./
 RUN pip install poetry
 RUN poetry install --without dev --no-root && rm -rf $POETRY_CACHE_DIR
 
-FROM builder AS development
+# Alpine doesn't support playwright
+FROM python:3.13.5-slim AS development
 
-USER ${USER}
-WORKDIR /app
+# Set up user like python_base does
+ENV USER=app
+RUN addgroup --gid 1000 --system ${USER} \
+    && adduser --uid 1000 --system ${USER} --ingroup ${USER} --home /home/${USER} \
+    && mkdir -p /home/${USER} \
+    && chown ${USER}:${USER} /home/${USER}
 
-COPY --chown=${USER}:${USER} . .
+ENV HOME=/home/${USER}
+
+ENV VIRTUAL_ENV=/app/.venv
+ENV PATH="/app/.venv/bin:$PATH"
 
 USER root
+WORKDIR /app
 
-RUN chown ${USER}:${USER} .
-RUN poetry install
+# Install system dependencies needed for Playwright
+RUN apt-get update && apt-get install -y \
+    fonts-liberation \
+    libasound2 \
+    libatk-bridge2.0-0 \
+    libatk1.0-0 \
+    libatspi2.0-0 \
+    libcups2 \
+    libdbus-1-3 \
+    libdrm2 \
+    libexpat1 \
+    libgbm1 \
+    libglib2.0-0 \
+    libgtk-3-0 \
+    libnspr4 \
+    libnss3 \
+    libx11-6 \
+    libxcomposite1 \
+    libxdamage1 \
+    libxext6 \
+    libxfixes3 \
+    libxrandr2 \
+    libxss1 \
+    libxtst6 \
+    xdg-utils \
+    && rm -rf /var/lib/apt/lists/*
+
+ENV POETRY_NO_INTERACTION=1 \
+    POETRY_VIRTUALENVS_IN_PROJECT=1 \
+    POETRY_VIRTUALENVS_CREATE=1
+
+COPY pyproject.toml poetry.lock ./
+RUN pip install poetry
+RUN poetry install --no-root
+RUN poetry run playwright install
 
 USER ${USER}
+COPY --chown=${USER}:${USER} . .
 
 FROM python_base
 

docker-compose.yml

@@ -13,6 +13,8 @@ services:
       - .env
     depends_on:
       - db
+    volumes:
+      - ./lung_cancer_screening:/app/lung_cancer_screening
     restart: unless-stopped
 
   asset_builder:

lung_cancer_screening/core/tests/acceptance/test_homepage.py

@@ -1,11 +1,23 @@
-from django.test import TestCase, Client
+import os
+from django.contrib.staticfiles.testing import StaticLiveServerTestCase
+from playwright.sync_api import sync_playwright
 
-class TestHomepage(TestCase):
 
-    def setUp(self):
-        self.client = Client()
+class TestQuestionnaire(StaticLiveServerTestCase):
 
-    def test_homepage_displays_hello_world(self):
-        response = self.client.get('/')
-        self.assertEqual(response.status_code, 200)
-        self.assertContains(response, "hello world")
+    @classmethod
+    def setUpClass(cls):
+        os.environ["DJANGO_ALLOW_ASYNC_UNSAFE"] = "true"
+        super().setUpClass()
+        cls.playwright = sync_playwright().start()
+        cls.browser = cls.playwright.chromium.launch()
+
+    @classmethod
+    def tearDownClass(cls):
+        super().tearDownClass()
+        cls.browser.close()
+        cls.playwright.stop()
+
+    def test_full_questionaire_user_journey(self):
+        page = self.browser.new_page()
+        page.goto(f"{self.live_server_url}/")

makefiles/dev.mk

@@ -18,7 +18,7 @@ dev-logs:
 	$(DOCKER_COMPOSE_CMD) logs -f
 
 dev-shell:
-	$(DOCKER_COMPOSE_CMD) run web sh
+	$(DOCKER_COMPOSE_CMD) run web bash
 
 dev-migrate:
 	$(DOCKER_COMPOSE_CMD) run --rm web python manage.py migrate

poetry.lock

@@ -18,6 +18,7 @@ package-mode = false
 
 [tool.poetry.group.dev.dependencies]
 ruff = "^0.12.10"
+playwright = "^1.55.0"
 
 [build-system]
 requires = ["poetry-core>=2.0.0,<3.0.0"]

pyproject.toml

@@ -17,4 +17,4 @@ cd "$(git rev-parse --show-toplevel)"
 # tests from here. If you want to run other test suites, see the predefined
 # tasks in scripts/lint.mk.
 
-docker compose run --rm web poetry run ruff check lung_cancer_screening
+docker compose run --rm web poetry run ruff check --no-cache lung_cancer_screening

scripts/tests/lint.sh

@@ -17,4 +17,4 @@ cd "$(git rev-parse --show-toplevel)"
 # tests from here. If you want to run other test suites, see the predefined
 # tasks in scripts/test.mk.
 
-docker compose run web poetry run python manage.py test
+docker compose run --rm web poetry run python manage.py test