Issue #20640: Add tests for idlelib.configHelpSourceEdit.

Patch by Saimadhav Heblikar.

Lib/idlelib/configHelpSourceEdit.py

@@ -23,10 +23,10 @@ class GetHelpSourceDialog(Toplevel):
         self.title(title)
         self.transient(parent)
         self.grab_set()
-        self.protocol("WM_DELETE_WINDOW", self.Cancel)
+        self.protocol("WM_DELETE_WINDOW", self.cancel)
         self.parent = parent
         self.result = None
-        self.CreateWidgets()
+        self.create_widgets()
         self.menu.set(menuItem)
         self.path.set(filePath)
         self.withdraw() #hide while setting geometry
@@ -41,10 +41,10 @@ class GetHelpSourceDialog(Toplevel):
                     ((parent.winfo_height()/2 - self.winfo_reqheight()/2)
                     if not _htest else 150)))
         self.deiconify() #geometry set, unhide
-        self.bind('<Return>', self.Ok)
+        self.bind('<Return>', self.ok)
         self.wait_window()
 
-    def CreateWidgets(self):
+    def create_widgets(self):
         self.menu = StringVar(self)
         self.path = StringVar(self)
         self.fontSize = StringVar(self)
@@ -65,18 +65,18 @@ class GetHelpSourceDialog(Toplevel):
         labelPath.pack(anchor=W, padx=5, pady=3)
         self.entryPath.pack(anchor=W, padx=5, pady=3)
         browseButton = Button(self.frameMain, text='Browse', width=8,
-                              command=self.browseFile)
+                              command=self.browse_file)
         browseButton.pack(pady=3)
         frameButtons = Frame(self)
         frameButtons.pack(side=BOTTOM, fill=X)
         self.buttonOk = Button(frameButtons, text='OK',
-                               width=8, default=ACTIVE,  command=self.Ok)
+                               width=8, default=ACTIVE,  command=self.ok)
         self.buttonOk.grid(row=0, column=0, padx=5,pady=5)
         self.buttonCancel = Button(frameButtons, text='Cancel',
-                                   width=8, command=self.Cancel)
+                                   width=8, command=self.cancel)
         self.buttonCancel.grid(row=0, column=1, padx=5, pady=5)
 
-    def browseFile(self):
+    def browse_file(self):
         filetypes = [
             ("HTML Files", "*.htm *.html", "TEXT"),
             ("PDF Files", "*.pdf", "TEXT"),
@@ -99,9 +99,9 @@ class GetHelpSourceDialog(Toplevel):
         if file:
             self.path.set(file)
 
-    def MenuOk(self):
+    def menu_ok(self):
         "Simple validity check for a sensible menu item name"
-        menuOk = True
+        menu_ok = True
         menu = self.menu.get()
         menu.strip()
         if not menu:
@@ -109,19 +109,19 @@ class GetHelpSourceDialog(Toplevel):
                                    message='No menu item specified',
                                    parent=self)
             self.entryMenu.focus_set()
-            menuOk = False
+            menu_ok = False
         elif len(menu) > 30:
             tkMessageBox.showerror(title='Menu Item Error',
                                    message='Menu item too long:'
                                            '\nLimit 30 characters.',
                                    parent=self)
             self.entryMenu.focus_set()
-            menuOk = False
-        return menuOk
+            menu_ok = False
+        return menu_ok
 
-    def PathOk(self):
+    def path_ok(self):
         "Simple validity check for menu file path"
-        pathOk = True
+        path_ok = True
         path = self.path.get()
         path.strip()
         if not path: #no path specified
@@ -129,7 +129,7 @@ class GetHelpSourceDialog(Toplevel):
                                    message='No help file path specified.',
                                    parent=self)
             self.entryPath.focus_set()
-            pathOk = False
+            path_ok = False
         elif path.startswith(('www.', 'http')):
             pass
         else:
@@ -140,11 +140,11 @@ class GetHelpSourceDialog(Toplevel):
                                        message='Help file path does not exist.',
                                        parent=self)
                 self.entryPath.focus_set()
-                pathOk = False
-        return pathOk
+                path_ok = False
+        return path_ok
 
-    def Ok(self, event=None):
-        if self.MenuOk() and self.PathOk():
+    def ok(self, event=None):
+        if self.menu_ok() and self.path_ok():
             self.result = (self.menu.get().strip(),
                            self.path.get().strip())
             if sys.platform == 'darwin':
@@ -157,10 +157,14 @@ class GetHelpSourceDialog(Toplevel):
                     self.result[1] = "file://" + path
             self.destroy()
 
-    def Cancel(self, event=None):
+    def cancel(self, event=None):
         self.result = None
         self.destroy()
 
 if __name__ == '__main__':
+    import unittest
+    unittest.main('idlelib.idle_test.test_config_help',
+                   verbosity=2, exit=False)
+
     from idlelib.idle_test.htest import run
     run(GetHelpSourceDialog)

Lib/idlelib/idle_test/mock_tk.py

@@ -296,3 +296,8 @@ class Text:
     def bind(sequence=None, func=None, add=None):
         "Bind to this widget at event sequence a call to function func."
         pass
+
+class Entry:
+    "Mock for tkinter.Entry."
+    def focus_set(self):
+        pass

Lib/idlelib/idle_test/test_config_help.py

+"""Unittests for idlelib.configHelpSourceEdit"""
+import unittest
+from idlelib.idle_test.mock_tk import Var, Mbox, Entry
+from idlelib import configHelpSourceEdit as help_dialog_module
+
+help_dialog = help_dialog_module.GetHelpSourceDialog
+
+
+class Dummy_help_dialog:
+    # Mock for testing the following methods of help_dialog
+    menu_ok = help_dialog.menu_ok
+    path_ok = help_dialog.path_ok
+    ok = help_dialog.ok
+    cancel = help_dialog.cancel
+    # Attributes, constant or variable, needed for tests
+    menu = Var()
+    entryMenu = Entry()
+    path = Var()
+    entryPath = Entry()
+    result = None
+    destroyed = False
+
+    def destroy(self):
+        self.destroyed = True
+
+
+# menu_ok and path_ok call Mbox.showerror if menu and path are not ok.
+orig_mbox = help_dialog_module.tkMessageBox
+showerror = Mbox.showerror
+
+
+class ConfigHelpTest(unittest.TestCase):
+    dialog = Dummy_help_dialog()
+
+    @classmethod
+    def setUpClass(cls):
+        help_dialog_module.tkMessageBox = Mbox
+
+    @classmethod
+    def tearDownClass(cls):
+        help_dialog_module.tkMessageBox = orig_mbox
+
+    def test_blank_menu(self):
+        self.dialog.menu.set('')
+        self.assertFalse(self.dialog.menu_ok())
+        self.assertEqual(showerror.title, 'Menu Item Error')
+        self.assertIn('No', showerror.message)
+
+    def test_long_menu(self):
+        self.dialog.menu.set('hello' * 10)
+        self.assertFalse(self.dialog.menu_ok())
+        self.assertEqual(showerror.title, 'Menu Item Error')
+        self.assertIn('long', showerror.message)
+
+    def test_good_menu(self):
+        self.dialog.menu.set('help')
+        showerror.title = 'No Error'  # should not be called
+        self.assertTrue(self.dialog.menu_ok())
+        self.assertEqual(showerror.title, 'No Error')
+
+    def test_blank_path(self):
+        self.dialog.path.set('')
+        self.assertFalse(self.dialog.path_ok())
+        self.assertEqual(showerror.title, 'File Path Error')
+        self.assertIn('No', showerror.message)
+
+    def test_invalid_file_path(self):
+        self.dialog.path.set('foobar' * 100)
+        self.assertFalse(self.dialog.path_ok())
+        self.assertEqual(showerror.title, 'File Path Error')
+        self.assertIn('not exist', showerror.message)
+
+    def test_invalid_url_path(self):
+        self.dialog.path.set('ww.foobar.com')
+        self.assertFalse(self.dialog.path_ok())
+        self.assertEqual(showerror.title, 'File Path Error')
+        self.assertIn('not exist', showerror.message)
+
+        self.dialog.path.set('htt.foobar.com')
+        self.assertFalse(self.dialog.path_ok())
+        self.assertEqual(showerror.title, 'File Path Error')
+        self.assertIn('not exist', showerror.message)
+
+    def test_good_path(self):
+        self.dialog.path.set('https://docs.python.org')
+        showerror.title = 'No Error'  # should not be called
+        self.assertTrue(self.dialog.path_ok())
+        self.assertEqual(showerror.title, 'No Error')
+
+    def test_ok(self):
+        self.dialog.destroyed = False
+        self.dialog.menu.set('help')
+        self.dialog.path.set('https://docs.python.org')
+        self.dialog.ok()
+        self.assertEqual(self.dialog.result, ('help',
+                                              'https://docs.python.org'))
+        self.assertTrue(self.dialog.destroyed)
+
+    def test_cancel(self):
+        self.dialog.destroyed = False
+        self.dialog.cancel()
+        self.assertEqual(self.dialog.result, None)
+        self.assertTrue(self.dialog.destroyed)
+
+if __name__ == '__main__':
+    unittest.main(verbosity=2, exit=False)