feat: configure [backend] loads existing backend config rather than just overwriting it

1 files changed, 31 insertions, 0 deletions

diff --git a/app/tests/test_tui.py b/app/tests/test_tui.py
index ce408af..49960a1 100644
--- a/app/tests/test_tui.py
+++ b/app/tests/test_tui.py
@@ -857,6 +857,37 @@ class CheckboxTreeTests(TuiTestCase):
         picked = tui.checkbox_tree(screen, "Pick models", self.FAMILIES)
         self.assertEqual(picked, [(0, "pkg-a")])
 
+    def test_prechecked_selection_accepted_directly(self):
+        # checked= seeds the tree (modify flow): Enter alone accepts the
+        # pre-checked option without any key presses in between.
+        screen = FakeScreen(keys=[10])
+        picked = tui.checkbox_tree(
+            screen, "Pick models", self.FAMILIES,
+            checked={(0, "pkg-b"), (1, "pkg-c")})
+        self.assertEqual(picked, [(0, "pkg-b"), (1, "pkg-c")])
+
+    def test_prechecked_options_draw_as_checked(self):
+        screen = FakeScreen(keys=[10])
+        tui.checkbox_tree(screen, "Pick models", self.FAMILIES,
+                          checked={(0, "pkg-b")})
+        texts = [text for _, _, text, _ in screen.strings]
+        # The pre-checked option row (indented) draws its box checked.
+        self.assertIn("[x] ", texts)
+        # ...and the family row is expanded (its options are listed).
+        self.assertIn("- Family one", texts)
+
+    def test_prechecked_family_cursor_starts_on_it(self):
+        # Only the second family is pre-checked, so the cursor starts on it:
+        # Space clears then re-checks that family (the cursor never moves).
+        # If the cursor were still on the first family, the two Spaces would
+        # check then clear family one and Enter would flash instead of
+        # accepting anything.
+        screen = FakeScreen(keys=[ord(" "), ord(" "), 10])
+        picked = tui.checkbox_tree(
+            screen, "Pick models", self.FAMILIES,
+            checked={(1, "pkg-c")})
+        self.assertEqual(picked, [(1, "pkg-c")])
+
     def test_empty_families_rejected(self):
         with self.assertRaises(ValueError):
             tui.checkbox_tree(self.screen, "Pick", [])