[3.11] IDLE: Fix test_debugger bug and buildbot failures (GH-112258) (#112260)

IDLE: Fix test_debugger bug and buildbot failures (GH-112258)

Missing "requires('gui')" causes Tk() to fail when no gui.
This caused CI Hypothesis test to fail, but I did not understand
the its error message. Then buildbots failed.

IdbTest failed on draft Bdb replacement because so different.
Simplified version works on old and new.
(cherry picked from commit 14fd86a59d0d91fe72641efeb14a59d99127dec3)

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

diff --git a/Lib/idlelib/idle_test/test_debugger.py b/Lib/idlelib/idle_test/test_debugger.py
index db01a893cb19808db8aea9cc4e11c21cf117dd6a..d1c9638dd5d711e39b13522d1e2a74cac136a85a 100644 (file)
--- a/Lib/idlelib/idle_test/test_debugger.py
+++ b/Lib/idlelib/idle_test/test_debugger.py
@@ -1,4 +1,7 @@
-"Test debugger, coverage 19%"
+"""Test debugger, coverage 66%
+
+Try to make tests pass with draft bdbx, which may replace bdb in 3.13+.
+"""
 
 from idlelib import debugger
 from collections import namedtuple
@@ -44,10 +47,8 @@ class IdbTest(unittest.TestCase):
         cls.msg = 'file.py:2: <module>()'
 
     def test_init(self):
-        # Test that Idb.__init_ calls Bdb.__init__.
-        idb = debugger.Idb(None)
-        self.assertIsNone(idb.gui)
-        self.assertTrue(hasattr(idb, 'breaks'))
+        self.assertIs(self.idb.gui, self.gui)
+        # Won't test super call since two Bdbs are very different.
 
     def test_user_line(self):
         # Test that .user_line() creates a string message for a frame.
@@ -279,6 +280,7 @@ class NameSpaceTest(unittest.TestCase):
 
     @classmethod
     def setUpClass(cls):
+        requires('gui')
         cls.root = Tk()
         cls.root.withdraw()