From a7fdbc89053bac3d34c53db0d6e311e4ef66fb7e Mon Sep 17 00:00:00 2001
From: Frank Sachsenheim <funkyfuture@riseup.net>
Date: Fri, 6 Mar 2020 20:49:49 +0100
Subject: [PATCH] Fixes missing normalization of whitespace in schema's rule
 names

---
 CHANGES.rst                   |  6 ++++++
 cerberus/schema.py            | 15 ++++++++++-----
 cerberus/tests/test_schema.py |  6 ++++++
 3 files changed, 22 insertions(+), 5 deletions(-)

diff --git a/CHANGES.rst b/CHANGES.rst
index 4f27ff40..0d43cff4 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -6,12 +6,18 @@ Cerberus is a collaboratively funded project, see the `funding page`_.
 Version 1.3.3
 -------------
 
+Unreleased.
+
 Fixed
 ~~~~~~
 
 - Fixed crash when submitting non-hashable values to ``allowed`` (`#524`_)
+- Fixed schema validation for rules specifications with space (`#527`)
+- Replaced deprecated rule name ``validator`` with ``check_with`` in the docs
+  (`#527`)
 
 .. _`#524`: https://github.com/pyeve/cerberus/issues/524
+.. _`#527`: https://github.com/pyeve/cerberus/issues/527
 
 Version 1.3.2
 -------------
diff --git a/cerberus/schema.py b/cerberus/schema.py
index 3841384e..2e4b5071 100644
--- a/cerberus/schema.py
+++ b/cerberus/schema.py
@@ -269,12 +269,17 @@ def _validate(self, schema):
         if schema is None:
             raise SchemaError(errors.SCHEMA_ERROR_MISSING)
 
-        schema = copy(schema)
-        for field in schema:
-            if isinstance(schema[field], _str_type):
-                schema[field] = rules_set_registry.get(schema[field], schema[field])
+        test_schema = {}
+        for field, rules in schema.items():
+            if isinstance(rules, _str_type):
+                test_schema[field] = rules_set_registry.get(rules, rules)
+            else:
+                test_rules = {}
+                for rule, constraint in rules.items():
+                    test_rules[rule.replace(" ", "_")] = constraint
+                test_schema[field] = test_rules
 
-        if not self.schema_validator(schema, normalize=False):
+        if not self.schema_validator(test_schema, normalize=False):
             raise SchemaError(self.schema_validator.errors)
 
 
diff --git a/cerberus/tests/test_schema.py b/cerberus/tests/test_schema.py
index 509f446f..a301b12c 100644
--- a/cerberus/tests/test_schema.py
+++ b/cerberus/tests/test_schema.py
@@ -172,3 +172,9 @@ def bar(field, value, error):
     assert validator.schema == {
         'field': {'anyof': [{'check_with': foo}, {'check_with': bar}]}
     }
+
+
+def test_rulename_space_is_normalized():
+    validator = Validator(
+        schema={"field": {"default setter": lambda x: x, "type": "string"}}
+    )