gh-151776: Fix test_state_getters on terminals without insert/delete capability ...

idcok() and idlok() take effect only when the terminal can insert or
delete characters or lines, so check their getters against the
terminal's capabilities instead of asserting an unconditional round-trip.

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

diff --git a/Lib/test/test_curses.py b/Lib/test/test_curses.py
index deadafc93074e32627cd989a8881e402f7bb8c90..ba259ae0d1ce36a54efc9ee6057b0c36c7864296 100644 (file)
--- a/Lib/test/test_curses.py
+++ b/Lib/test/test_curses.py
@@ -1359,8 +1359,6 @@ class TestCurses(unittest.TestCase):
         # Each is_*() getter returns the value set by the matching setter.
         for setter, getter in [
             ('clearok', 'is_cleared'),
-            ('idcok', 'is_idcok'),
-            ('idlok', 'is_idlok'),
             ('keypad', 'is_keypad'),
             ('leaveok', 'is_leaveok'),
             ('nodelay', 'is_nodelay'),
@@ -1371,6 +1369,19 @@ class TestCurses(unittest.TestCase):
             self.assertIs(getattr(stdscr, getter)(), True)
             getattr(stdscr, setter)(False)
             self.assertIs(getattr(stdscr, getter)(), False)
+
+        # idcok()/idlok() only take effect if the terminal can insert/delete
+        # characters/lines, so the getter reflects that capability.
+        stdscr.idcok(True)
+        self.assertIs(stdscr.is_idcok(), curses.has_ic())
+        stdscr.idcok(False)
+        self.assertIs(stdscr.is_idcok(), False)
+
+        stdscr.idlok(True)
+        self.assertIs(stdscr.is_idlok(),
+                      curses.has_il() or curses.tigetstr('csr') is not None)
+        stdscr.idlok(False)
+        self.assertIs(stdscr.is_idlok(), False)
         if hasattr(stdscr, 'immedok'):
             stdscr.immedok(True)
             self.assertIs(stdscr.is_immedok(), True)