bpo-27313: Avoid test_ttk_guionly ComboboxTest fail with macOS Cocoa Tk (GH-12011)

(cherry picked from commit aeca373)

Co-authored-by: Ned Deily <[email protected]>

Author: miss-islington

Lib/tkinter/test/test_ttk/test_widgets.py

@@ -329,7 +329,12 @@ def test_identify(self):
         self.entry.wait_visibility()
         self.entry.update_idletasks()
 
-        self.assertEqual(self.entry.identify(5, 5), "textarea")
+        # bpo-27313: macOS Cocoa widget differs from X, allow either
+        if sys.platform == 'darwin':
+            self.assertIn(self.entry.identify(5, 5),
+                ("textarea", "Combobox.button") )
+        else:
+            self.assertEqual(self.entry.identify(5, 5), "textarea")
         self.assertEqual(self.entry.identify(-1, -1), "")
 
         self.assertRaises(tkinter.TclError, self.entry.identify, None, 5)

Misc/NEWS.d/next/Tests/2019-02-24-01-58-38.bpo-27313.Sj9veH.rst

@@ -0,0 +1 @@
+Avoid test_ttk_guionly ComboboxTest failure with macOS Cocoa Tk.