Add ESC as alias to Click Element (#1258)

Author: aaltat

src/SeleniumLibrary/keywords/element.py

@@ -1049,8 +1049,7 @@ def parse_modifier(self, modifier):
         keys = []
         for item in modifiers:
             item = item.strip()
-            if item == 'CTRL':
-                item = 'CONTROL'
+            item = self._parse_aliases(item)
             if hasattr(Keys, item):
                 keys.append(getattr(Keys, item))
             else:

utest/test/keywords/test_click_modifier.py

@@ -20,6 +20,10 @@ def tearDownClass(cls):
     def test_parsing_one_mofier(self):
         parsed = self.element.parse_modifier('CTRL')
         self.assertEqual(parsed, [Keys.CONTROL])
+        parsed = self.element.parse_modifier('esc')
+        self.assertEqual(parsed, [Keys.ESCAPE])
+        parsed = self.element.parse_modifier('ESCAPE')
+        self.assertEqual(parsed, [Keys.ESCAPE])
         parsed = self.element.parse_modifier('control')
         self.assertEqual(parsed, [Keys.CONTROL])
         parsed = self.element.parse_modifier('alt')