ci: Add e2e test

pyproject.toml

@@ -38,6 +38,9 @@ Document = "https://atsphinx.github.io/mini18n/"
 requires = ["hatchling"]
 build-backend = "hatchling.build"
 
+[tool.pytest.ini_options]
+addopts = "--browser webkit"
+
 [tool.rye]
 managed = true
 dev-dependencies = [
@@ -49,12 +52,14 @@ dev-dependencies = [
     "beautifulsoup4~=4.12.3",
     "sphinx-intl~=2.1.0",
     "sphinx-revealjs~=3.0.2",
+    "pytest-playwright~=0.5.0",
 ]
 
 [tool.rye.scripts]
-setup = {chain = ["setup:sync", "setup:pre-commit"]}
+setup = {chain = ["setup:sync", "setup:pre-commit", "setup:playwright"]}
 "setup:sync" = "rye sync --no-lock --all-features"
 "setup:pre-commit" = "pre-commit install"
+"setup:playwright" = "rye run playwright install webkit"
 doc = "make -C doc"
 
 [tool.ruff.lint]

requirements-dev.lock

@@ -38,6 +38,8 @@ exceptiongroup==1.2.0
     # via cattrs
     # via pytest
 furo==2024.1.29
+greenlet==3.0.3
+    # via playwright
 idna==3.6
     # via requests
 imagesize==1.4.1
@@ -60,8 +62,12 @@ packaging==24.0
     # via sphinx-revealjs
 platformdirs==4.2.0
     # via esbonio
+playwright==1.43.0
+    # via pytest-playwright
 pluggy==1.4.0
     # via pytest
+pyee==11.1.0
+    # via playwright
 pygls==1.3.0
     # via esbonio
 pygments==2.17.2
@@ -71,9 +77,17 @@ pygments==2.17.2
 pyspellchecker==0.8.1
     # via esbonio
 pytest==7.4.4
+    # via pytest-base-url
+    # via pytest-playwright
+pytest-base-url==2.1.0
+    # via pytest-playwright
+pytest-playwright==0.5.0
+python-slugify==8.0.4
+    # via pytest-playwright
 pytz==2024.1
     # via babel
 requests==2.31.0
+    # via pytest-base-url
     # via sphinx
 setuptools==69.2.0
     # via sphinx-intl
@@ -110,12 +124,15 @@ sphinxcontrib-qthelp==1.0.3
     # via sphinx
 sphinxcontrib-serializinghtml==1.1.5
     # via sphinx
+text-unidecode==1.3
+    # via python-slugify
 tomli==2.0.1
     # via pytest
 tornado==6.4
     # via livereload
 typing-extensions==4.10.0
     # via cattrs
+    # via pyee
 urllib3==2.2.1
     # via requests
 zipp==3.18.1

tests/test_javascript.py

@@ -0,0 +1,62 @@
+"""Tests for JavaScript layer."""
+
+import http.server
+import socket
+import threading
+import time
+from pathlib import Path
+from typing import Tuple
+
+import pytest
+from playwright.sync_api import Page
+from sphinx.testing.util import SphinxTestApp
+
+
+class ServerOnPytest(http.server.ThreadingHTTPServer):
+    """Wrapper class to work using pytest tmpdir and random port."""
+
+    def _is_port_in_use(self, port: int) -> bool:
+        with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
+            return s.connect_ex(("localhost", port)) == 0
+
+    def __init__(self, directory: Path, port_range: Tuple[int, int]):
+        """Initialize server with found usable port."""
+        self.directory = directory
+        for v in range(port_range[0], port_range[1] + 1):
+            if not self._is_port_in_use(v):
+                self.port = v
+                break
+            raise ValueError("All ports are already used.")
+        return super().__init__(("", self.port), http.server.SimpleHTTPRequestHandler)
+
+    def finish_request(self, request, client_address):  # noqa: D102
+        self.RequestHandlerClass(
+            request, client_address, self, directory=self.directory
+        )
+
+    def __enter__(self):  # noqa: D105
+        self._thread = threading.Thread(target=self.serve_forever)
+        self._thread.daemon = True
+        self._thread.start()
+        return super().__enter__()
+
+    def __exit__(self, *args, **kwargs):  # noqa: D105
+        print(args, kwargs)
+        super().__exit__()
+        self.shutdown()
+
+
+@pytest.mark.sphinx(
+    "mini18n-html",
+    confoverrides={
+        "mini18n_default_language": "en",
+        "mini18n_support_languages": ["en", "ja"],
+    },
+)
+def test__root(app: SphinxTestApp, page: Page):
+    app.build()
+    with ServerOnPytest(app.outdir, (30000, 50000)) as server:
+        url = f"http://localhost:{server.port}/"
+        page.goto(url)
+        time.sleep(0.5)
+        assert page.url.endswith("/en/")