tests: add test for cockpit feature

src/borg/testsuite/cockpit_test.py

@@ -0,0 +1,48 @@
+import asyncio
+import subprocess
+
+import pytest
+
+from borg.platformflags import is_freebsd, is_win32
+
+try:
+    from borg.cockpit.app import BorgCockpitApp
+
+    have_cockpit = True
+except ImportError:
+    have_cockpit = False
+
+pytestmark = pytest.mark.skipif(not have_cockpit, reason="can not import BorgCockpitApp, is textual installed?")
+
+
+def test_cockpit_app_create_archive(tmp_path):
+    if not (is_freebsd or is_win32):
+        pytest.skip("this slow test shall only run on FreeBSD and Windows")
+    repo_path = tmp_path / "repo"
+    input_path = tmp_path / "input"
+    input_path.mkdir()
+    for i in range(5000):
+        (input_path / f"test{i}.txt").write_text(f"content {i}")
+
+    subprocess.run(["borg", "-r", str(repo_path), "repo-create", "--encryption", "none"], check=True)
+
+    async def run():
+        app = BorgCockpitApp()
+        app.borg_args = ["-r", str(repo_path), "create", "--list", "test", str(input_path)]
+
+        async with app.run_test() as pilot:
+            assert "BorgBackup" in app.TITLE
+            assert app.is_running
+
+            # Wait for process to finish
+            while getattr(app, "process_running", True):
+                await pilot.pause(0.1)
+
+            status_panel = pilot.app.query_one("#status")
+            assert status_panel.rc == 0
+
+            assert app.total_lines_processed > 0
+
+            await pilot.press("q")  # quit app
+
+    asyncio.run(run())