Issue #21982: Add minimal unittest for configDialog with 46% coverage.

Fix regression that this test would have caught.

1 files changed, 32 insertions, 0 deletions

diff --git a/Lib/idlelib/idle_test/test_configdialog.py b/Lib/idlelib/idle_test/test_configdialog.py
new file mode 100644
index 0000000..6883123
--- /dev/null
+++ b/Lib/idlelib/idle_test/test_configdialog.py
@@ -0,0 +1,32 @@
+'''Unittests for idlelib/configHandler.py
+
+Coverage: 46% just by creating dialog. The other half is change code.
+
+'''
+import unittest
+from test.support import requires
+from tkinter import Tk
+from idlelib.configDialog import ConfigDialog
+from idlelib.macosxSupport import _initializeTkVariantTests
+
+
+class ConfigDialogTest(unittest.TestCase):
+
+    @classmethod
+    def setUpClass(cls):
+        requires('gui')
+        cls.root = Tk()
+        _initializeTkVariantTests(cls.root)
+
+    @classmethod
+    def tearDownClass(cls):
+        cls.root.destroy()
+        del cls.root
+
+    def test_dialog(self):
+        d=ConfigDialog(self.root, 'Test', _utest=True)
+        d.destroy()
+
+
+if __name__ == '__main__':
+    unittest.main(verbosity=2)