bpo-45436: Fix tkinter tests with Tcl/Tk 8.6.11+ (GH-29077) (GH-29081)

Since v8.6.11, a few configuration options seem to accept an empty value
where they did not previously; particularly the `type` of a `Menu`
widget, and the `compound` of any ttk widget with a label.  Providing an
explicit expected error message to `checkEnumParam` bypasses the check
of an empty value, which no longer raises `TclError`.
(cherry picked from commit 4fe454c6f54b0948af67b53af6c2f35af6377e69)

Co-authored-by: Zachary Ware <zach@python.org>

diff --git a/Lib/tkinter/test/test_tkinter/test_widgets.py b/Lib/tkinter/test/test_tkinter/test_widgets.py
index 39334de8cf41c3caba0f1f0e0ba4267aeeb31e1d..cc227e579679b739d7a8c14167c64b57427021ae 100644 (file)
--- a/Lib/tkinter/test/test_tkinter/test_widgets.py
+++ b/Lib/tkinter/test/test_tkinter/test_widgets.py
@@ -1241,8 +1241,11 @@ class MenuTest(AbstractWidgetTest, unittest.TestCase):
 
     def test_configure_type(self):
         widget = self.create()
-        self.checkEnumParam(widget, 'type',
-                'normal', 'tearoff', 'menubar')
+        self.checkEnumParam(
+            widget, 'type',
+            'normal', 'tearoff', 'menubar',
+            errmsg='bad type "{}": must be normal, tearoff, or menubar',
+            )
 
     def test_entryconfigure(self):
         m1 = self.create()

diff --git a/Lib/tkinter/test/test_ttk/test_widgets.py b/Lib/tkinter/test/test_ttk/test_widgets.py
index a2a4de2e5cc4154eff4ffb3f85d5a18e9111afe8..904aed0ac2df6ee8bde124ea1ff246ac144a2fdc 100644 (file)
--- a/Lib/tkinter/test/test_ttk/test_widgets.py
+++ b/Lib/tkinter/test/test_ttk/test_widgets.py
@@ -169,10 +169,13 @@ class AbstractLabelTest(AbstractWidgetTest):
                 errmsg='image "spam" doesn\'t exist')
 
     def test_configure_compound(self):
+        options = 'none text image center top bottom left right'.split()
+        errmsg = (
+            'bad compound "{}": must be'
+            f' {", ".join(options[:-1])}, or {options[-1]}'
+            )
         widget = self.create()
-        self.checkEnumParam(widget, 'compound',
-                'none', 'text', 'image', 'center',
-                'top', 'bottom', 'left', 'right')
+        self.checkEnumParam(widget, 'compound', *options, errmsg=errmsg)
 
     def test_configure_state(self):
         widget = self.create()