Add watchlist command

tests/test_watchlist.py

@@ -0,0 +1,34 @@
+from nixprstatus.watchlist import Watchlist, PRInfo
+from tempfile import TemporaryDirectory
+import unittest
+
+from tests.helpers.mocks import mocked_requests_get
+
+
+class TestWatchlist(unittest.TestCase):
+    def test_save_load(self):
+        with TemporaryDirectory() as d:
+            filename = f"{d}/test.json"
+
+            watchlist = Watchlist(prs=[PRInfo(pr=1, title="PR 1")])
+            watchlist.to_file(filename)
+
+            # Check that the file was written correctly
+            with open(filename, "r") as f:
+                self.assertEqual(watchlist.model_dump_json(), f.read())
+
+            # Check that the file can be read back
+            loaded = Watchlist.from_file(filename)
+            self.assertEqual(watchlist, loaded)
+
+    @unittest.mock.patch("requests.get", side_effect=mocked_requests_get)
+    def test_add_pr(self, mock_get):
+        w = Watchlist(prs=[])
+        w.add_pr(345583)
+        self.assertEqual(len(w.prs), 1)
+        self.assertEqual(w.prs[0].title, "wireshark: 4.2.6 -> 4.2.7")
+
+    def test_get_pr(self):
+        w = Watchlist(prs=[PRInfo(pr=1, title="PR 1")])
+        self.assertEqual(w.pr(1), PRInfo(pr=1, title="PR 1"))
+        self.assertEqual(w.pr(2), None)