Add a basic integration test (#160)

pyproject.toml

@@ -53,6 +53,7 @@ dependencies = [
 docs = [
 ]
 test = [
+  "httpx",
   "pytest>=6",
 ]
 [project.urls]

sphinx_autobuild/__main__.py

@@ -23,11 +23,11 @@
 from sphinx_autobuild.utils import find_free_port, open_browser, show
 
 
-def main():
+def main(argv=()):
     """Actual application logic."""
     colorama.init()
 
-    args, build_args = _parse_args(sys.argv[1:])
+    args, build_args = _parse_args(list(argv))
 
     src_dir = args.sourcedir
     out_dir = args.outdir
@@ -47,20 +47,12 @@ def main():
     )
 
     watch_dirs = [src_dir] + args.additional_watched_dirs
+    ignore_dirs = args.ignore + [out_dir, args.warnings_file, args.doctree_dir]
     ignore_handler = IgnoreFilter(
-        [p for p in args.ignore + [out_dir, args.warnings_file, args.doctree_dir] if p],
+        [p for p in ignore_dirs if p],
         args.re_ignore,
     )
-    watcher = RebuildServer(watch_dirs, ignore_handler, change_callback=builder)
-
-    app = Starlette(
-        routes=[
-            WebSocketRoute("/websocket-reload", watcher, name="reload"),
-            Mount("/", app=StaticFiles(directory=out_dir, html=True), name="static"),
-        ],
-        middleware=[Middleware(JavascriptInjectorMiddleware, ws_url=url_host)],
-        lifespan=watcher.lifespan,
-    )
+    app = _create_app(watch_dirs, ignore_handler, builder, out_dir, url_host)
 
     if not args.no_initial_build:
         show(context="Starting initial build")
@@ -76,6 +68,19 @@ def main():
         show(context="Server ceasing operations. Cheerio!")
 
 
+def _create_app(watch_dirs, ignore_handler, builder, out_dir, url_host):
+    watcher = RebuildServer(watch_dirs, ignore_handler, change_callback=builder)
+
+    return Starlette(
+        routes=[
+            WebSocketRoute("/websocket-reload", watcher, name="reload"),
+            Mount("/", app=StaticFiles(directory=out_dir, html=True), name="static"),
+        ],
+        middleware=[Middleware(JavascriptInjectorMiddleware, ws_url=url_host)],
+        lifespan=watcher.lifespan,
+    )
+
+
 def _parse_args(argv):
     # Parse once with the Sphinx parser to emit errors
     # and capture the ``-d`` and ``-w`` options.
@@ -197,4 +202,4 @@ def _add_autobuild_arguments(parser):
 
 
 if __name__ == "__main__":
-    main()
+    main(sys.argv[1:])

tests/test_application.py

@@ -0,0 +1,32 @@
+"""A very basic test that the application works."""
+
+import shutil
+from pathlib import Path
+
+from starlette.testclient import TestClient
+
+from sphinx_autobuild.__main__ import _create_app
+from sphinx_autobuild.build import Builder
+from sphinx_autobuild.filter import IgnoreFilter
+
+ROOT = Path(__file__).parent.parent
+
+
+def test_application(tmp_path):
+    src_dir = tmp_path / "docs"
+    out_dir = tmp_path / "build"
+    shutil.copytree(ROOT / "docs", tmp_path / "docs")
+    out_dir.mkdir(parents=True, exist_ok=True)
+
+    url_host = "127.0.0.1:7777"
+    ignore_handler = IgnoreFilter([out_dir], [])
+    builder = Builder(
+        [str(src_dir), str(out_dir)], url_host=url_host, pre_build_commands=[]
+    )
+    app = _create_app([src_dir], ignore_handler, builder, out_dir, url_host)
+    client = TestClient(app)
+
+    builder(rebuild=False)
+
+    response = client.get("/")
+    assert response.status_code == 200