Add a functional test for the spelling checker

pylint/checkers/spelling.py

@@ -258,7 +258,8 @@ class SpellingChecker(BaseTokenChecker):
                 "default": "fmt: on,fmt: off,noqa:,noqa,nosec,isort:skip,mypy:",
                 "type": "string",
                 "metavar": "<comma separated words>",
-                "help": "List of comma separated words that should be considered directives if they appear and the beginning of a comment and should not be checked.",
+                "help": "List of comma separated words that should be considered directives if "
+                "they appear and the beginning of a comment and should not be checked.",
             },
         ),
     )

tests/functional/s/spelling/spelling.py

@@ -0,0 +1,6 @@
+"""Functional test for speling.""" # [wrong-spelling-in-docstring]
+
+# mispeled text # [wrong-spelling-in-comment]
+
+def function_name():
+    """mispeled text.""" # [wrong-spelling-in-dostring]

tests/functional/s/spelling/spelling.rc

@@ -0,0 +1,2 @@
+[MASTER]
+load-plugins=pylint.checkers.spelling,