fix(quickshell): handle checkupdates with no available updates

quickshell/.config/quickshell/labfy-sway/bin/check-updates.py

@@ -13,6 +13,10 @@ import tempfile
 def count(command):
     # CONTRACT: aucune mise à jour n'est appliquée ; chaque vérification est bornée.
     result = subprocess.run(command, capture_output=True, text=True, timeout=120, check=False)
+    # CONTRACT: checkupdates utilise le code 2 pour « aucune mise à jour » ;
+    # INVARIANT: une sortie inattendue garde le chemin d'erreur existant.
+    if command[0] == "checkupdates" and result.returncode == 2 and not result.stdout.strip() and not result.stderr.strip():
+        return 0
     # yay -Qua retourne 1 avec stdout/stderr vides quand aucune entrée AUR n'existe.
     if command[0] == "yay" and result.returncode == 1 and not result.stdout.strip() and not result.stderr.strip():
         return 0

tests/test_quickshell_updates.py

@@ -0,0 +1,45 @@
+import importlib.util
+import subprocess
+import unittest
+from pathlib import Path
+from unittest import mock
+
+
+SOURCE = Path(__file__).resolve().parents[1] / "quickshell/.config/quickshell/labfy-sway/bin/check-updates.py"
+SPEC = importlib.util.spec_from_file_location("quickshell_updates", SOURCE)
+updates = importlib.util.module_from_spec(SPEC)
+SPEC.loader.exec_module(updates)
+
+
+class CountTests(unittest.TestCase):
+    def check_count(self, command, returncode, stdout, stderr, expected):
+        result = subprocess.CompletedProcess(command, returncode, stdout, stderr)
+        with mock.patch.object(updates.subprocess, "run", return_value=result) as run:
+            if isinstance(expected, type) and issubclass(expected, Exception):
+                with self.assertRaises(expected):
+                    updates.count(command)
+            else:
+                self.assertEqual(updates.count(command), expected)
+            run.assert_called_once_with(command, capture_output=True, text=True, timeout=120, check=False)
+
+    def test_checkupdates_counts_lines(self):
+        self.check_count(["checkupdates"], 0, "pkg-a 1 -> 2\npkg-b 3 -> 4\n", "", 2)
+
+    def test_checkupdates_no_updates(self):
+        self.check_count(["checkupdates"], 2, "", "", 0)
+
+    def test_checkupdates_code_one_is_error(self):
+        self.check_count(["checkupdates"], 1, "", "", RuntimeError)
+
+    def test_checkupdates_code_two_with_stderr_is_error(self):
+        self.check_count(["checkupdates"], 2, "", "erreur inattendue", RuntimeError)
+
+    def test_yay_no_updates(self):
+        self.check_count(["yay", "-Qua"], 1, "", "", 0)
+
+    def test_yay_counts_lines(self):
+        self.check_count(["yay", "-Qua"], 0, "aur-a 1 -> 2\naur-b 3 -> 4\n", "", 2)
+
+
+if __name__ == "__main__":
+    unittest.main()