Validate docstring error code

Author: tqa236

Diff for: ci/code_checks.sh

@@ -65,8 +65,8 @@ fi
 ### DOCSTRINGS ###
 if [[ -z "$CHECK" || "$CHECK" == "docstrings" ]]; then
 
-    MSG='Validate docstrings (EX01, EX03, EX04, GL01, GL02, GL03, GL04, GL05, GL06, GL07, GL09, GL10, PR03, PR04, PR05, PR06, PR08, PR09, PR10, RT01, RT02, RT04, RT05, SA02, SA03, SA04, SA05, SS01, SS02, SS03, SS04, SS05, SS06)' ; echo $MSG
-    $BASE_DIR/scripts/validate_docstrings.py --format=actions --errors=EX01,EX03,EX04,GL01,GL02,GL03,GL04,GL05,GL06,GL07,GL09,GL10,PR03,PR04,PR05,PR06,PR08,PR09,PR10,RT01,RT02,RT04,RT05,SA02,SA03,SA04,SA05,SS01,SS02,SS03,SS04,SS05,SS06
+    MSG='Validate docstrings (EX01, EX03, EX04, GL01, GL02, GL03, GL04, GL11, GL06, GL07, GL09, GL10, PR03, PR04, PR05, PR06, PR08, PR09, PR10, RT01, RT02, RT04, RT05, SA02, SA03, SA04, SA05, SS01, SS02, SS03, SS04, SS05, SS06)' ; echo $MSG
+    $BASE_DIR/scripts/validate_docstrings.py --format=actions --errors=EX01,EX03,EX04,GL01,GL02,GL03,GL04,GL11,GL06,GL07,GL09,GL10,PR03,PR04,PR05,PR06,PR08,PR09,PR10,RT01,RT02,RT04,RT05,SA02,SA03,SA04,SA05,SS01,SS02,SS03,SS04,SS05,SS06
     RET=$(($RET + $?)) ; echo $MSG "DONE"
 
     MSG='Partially validate docstrings (PR02)' ;  echo $MSG

Diff for: scripts/validate_docstrings.py

@@ -28,10 +28,7 @@
 import matplotlib
 import matplotlib.pyplot as plt
 from numpydoc.docscrape import get_doc_object
-from numpydoc.validate import (
-    Validator,
-    validate,
-)
+from numpydoc.validate import Validator, validate, ERROR_MSGS as NUMPYDOC_ERROR_MSGS
 
 # With template backend, matplotlib plots nothing
 matplotlib.use("template")
@@ -56,7 +53,7 @@
 ERROR_MSGS = {
     "GL04": "Private classes ({mentioned_private_classes}) should not be "
     "mentioned in public docstrings",
-    "GL05": "Use 'array-like' rather than 'array_like' in docstrings.",
+    "GL11": "Use 'array-like' rather than 'array_like' in docstrings.",
     "SA05": "{reference_name} in `See Also` section does not need `pandas` "
     "prefix, use {right_reference} instead.",
     "EX03": "flake8 error: line {line_number}, col {col_number}: {error_code} "
@@ -239,7 +236,6 @@ def pandas_validate(func_name: str):
     doc_obj = get_doc_object(func_obj, doc=func_obj.__doc__)
     doc = PandasDocstring(func_name, doc_obj)
     result = validate(doc_obj)
-
     mentioned_errs = doc.mentioned_private_classes
     if mentioned_errs:
         result["errors"].append(
@@ -277,7 +273,7 @@ def pandas_validate(func_name: str):
         )
 
     if doc.non_hyphenated_array_like():
-        result["errors"].append(pandas_error("GL05"))
+        result["errors"].append(pandas_error("GL11"))
 
     plt.close("all")
     return result
@@ -400,11 +396,19 @@ def header(title, width=80, char="#") -> str:
         sys.stderr.write(header("Doctests"))
         sys.stderr.write(result["examples_errs"])
 
+def validate_error_codes(errors):
+    overlapped_errors = set(NUMPYDOC_ERROR_MSGS).intersection(set(ERROR_MSGS))
+    assert not overlapped_errors, f"{overlapped_errors} is overlapped."
+    all_errors = set(NUMPYDOC_ERROR_MSGS).union(set(ERROR_MSGS))
+    nonexistent_errors = set(errors) - all_errors
+    assert not nonexistent_errors, f"{nonexistent_errors} don't exist."
+
 
 def main(func_name, prefix, errors, output_format, ignore_deprecated, ignore_functions):
     """
     Main entry point. Call the validation for one or for all docstrings.
     """
+    validate_error_codes(errors)
     if func_name is None:
         return print_validate_all_results(
             prefix,