Make the model name generation more robust in JSON schema

pydantic/json_schema.py

@@ -1844,7 +1844,7 @@ def get_defs_ref(self, core_mode_ref: CoreModeRef) -> DefsRef:
         core_ref, mode = core_mode_ref
         components = re.split(r'([\][,])', core_ref)
         # Remove IDs from each component
-        components = [x.split(':')[0] for x in components]
+        components = [x.rsplit(':', 1)[0] for x in components]
         core_ref_no_id = ''.join(components)
         # Remove everything before the last period from each "component"
         components = [re.sub(r'(?:[^.[\]]+\.)+((?:[^.[\]]+))', r'\1', x) for x in components]

tests/conftest.py

@@ -50,13 +50,14 @@ def disable_error_urls():
 
 @pytest.fixture
 def create_module(tmp_path, request):
-    def run(source_code_or_function, rewrite_assertions=True):
+    def run(source_code_or_function, rewrite_assertions=True, module_name_prefix=None):
         """
         Create module object, execute it and return
         Can be used as a decorator of the function from the source code of which the module will be constructed
 
         :param source_code_or_function string or function with body as a source code for created module
         :param rewrite_assertions: whether to rewrite assertions in module or not
+        :param module_name_prefix: string prefix to use in the name of the module, does not affect the name of the file.
 
         """
         if isinstance(source_code_or_function, FunctionType):
@@ -65,6 +66,8 @@ def run(source_code_or_function, rewrite_assertions=True):
             source_code = source_code_or_function
 
         module_name, filename = _create_module_file(source_code, tmp_path, request.node.name)
+        if module_name_prefix:
+            module_name = module_name_prefix + module_name
 
         if rewrite_assertions:
             loader = AssertionRewritingHook(config=request.config)

tests/test_json_schema.py

@@ -5702,3 +5702,29 @@ class Bar(BaseModel):
         },
         'allOf': [{'$ref': '#/$defs/Bar'}],
     }
+
+
+def test_module_with_colon_in_name(create_module):
+    module = create_module(
+        # language=Python
+        """
+from pydantic import BaseModel
+
+class Foo(BaseModel):
+    x: int
+        """,
+        module_name_prefix='C:\\',
+    )
+
+    foo_model = module.Foo
+    _, v_schema = models_json_schema([(foo_model, 'validation')])
+    assert v_schema == {
+        '$defs': {
+            'Foo': {
+                'properties': {'x': {'title': 'X', 'type': 'integer'}},
+                'required': ['x'],
+                'title': 'Foo',
+                'type': 'object',
+            }
+        }
+    }