add integration test for webui

pkgs/clan-cli/clan_cli/webui/__main__.py

@@ -0,0 +1,10 @@
+import argparse
+
+from . import register_parser
+
+if __name__ == "__main__":
+    # this is use in our integration test
+    parser = argparse.ArgumentParser()
+    register_parser(parser)
+    args = parser.parse_args()
+    args.func(args)

pkgs/clan-cli/tests/test_webui.py

@@ -0,0 +1,38 @@
+import os
+import select
+import shutil
+import subprocess
+import sys
+from pathlib import Path
+
+from ports import Ports
+
+
+def test_start_server(ports: Ports, temporary_dir: Path) -> None:
+    port = ports.allocate(1)
+
+    fifo = temporary_dir / "fifo"
+    os.mkfifo(fifo)
+    notify_script = temporary_dir / "notify.sh"
+    bash = shutil.which("bash")
+    assert bash is not None
+    notify_script.write_text(
+        f"""#!{bash}
+set -x
+echo "1" > {fifo}
+"""
+    )
+    notify_script.chmod(0o700)
+
+    env = os.environ.copy()
+    env["BROWSER"] = str(notify_script)
+    with subprocess.Popen(
+        [sys.executable, "-m", "clan_cli.webui", "--port", str(port)], env=env
+    ) as p:
+        try:
+            with open(fifo) as f:
+                r, _, _ = select.select([f], [], [], 10)
+                assert f in r
+                assert f.read().strip() == "1"
+        finally:
+            p.kill()