[3.12] gh-86673: Harden `test_ttk.test_element_create_image` (GH-123335) (#124655)

(cherry picked from commit 08e1bbe4a329e5961716f030c6ccfe92c736bf28)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

diff --git a/Lib/test/test_ttk/test_style.py b/Lib/test/test_ttk/test_style.py
index 2b13186280e313750066491c8b4a01ddacb59c41..5de29a395cf75d60e3f649589213adc5e32f914c 100644 (file)
--- a/Lib/test/test_ttk/test_style.py
+++ b/Lib/test/test_ttk/test_style.py
@@ -227,13 +227,13 @@ class StyleTest(AbstractTkTest, unittest.TestCase):
                                    foreground='blue', background='yellow')
         img3 = tkinter.BitmapImage(master=self.root, file=imgfile,
                                    foreground='white', background='black')
-        style.element_create('Button.button', 'image',
+        style.element_create('TestButton.button', 'image',
                              img1, ('pressed', img2), ('active', img3),
                              border=(2, 4), sticky='we')
-        self.assertIn('Button.button', style.element_names())
+        self.assertIn('TestButton.button', style.element_names())
 
-        style.layout('Button', [('Button.button', {'sticky': 'news'})])
-        b = ttk.Button(self.root, style='Button')
+        style.layout('TestButton', [('TestButton.button', {'sticky': 'news'})])
+        b = ttk.Button(self.root, style='TestButton')
         b.pack(expand=True, fill='both')
         self.assertEqual(b.winfo_reqwidth(), 16)
         self.assertEqual(b.winfo_reqheight(), 16)