[python] Fix array of array of model's to_dict, from_dict (#16032)

* fix array of array of model's to_dict, from_dict

* update samples

modules/openapi-generator/src/main/resources/python/model_generic.mustache

@@ -138,6 +138,20 @@ class {{classname}}({{#parent}}{{{.}}}{{/parent}}{{^parent}}BaseModel{{/parent}}
         {{#allVars}}
         {{#isContainer}}
         {{#isArray}}
+        {{#items.isArray}}
+        {{^items.items.isPrimitiveType}}
+        # override the default output from pydantic by calling `to_dict()` of each item in {{{name}}} (list of list)
+        _items = []
+        if self.{{{name}}}:
+            for _item in self.{{{name}}}:
+                if _item:
+                    _items.append(
+                         [_inner_item.to_dict() for _inner_item in _item if _inner_item is not None]
+                    )
+            _dict['{{{baseName}}}'] = _items
+        {{/items.items.isPrimitiveType}}
+        {{/items.isArray}}
+        {{^items.isArray}}
         {{^items.isPrimitiveType}}
         {{^items.isEnumOrRef}}
         # override the default output from pydantic by calling `to_dict()` of each item in {{{name}}} (list)
@@ -149,6 +163,7 @@ class {{classname}}({{#parent}}{{{.}}}{{/parent}}{{^parent}}BaseModel{{/parent}}
             _dict['{{{baseName}}}'] = _items
         {{/items.isEnumOrRef}}
         {{/items.isPrimitiveType}}
+        {{/items.isArray}}
         {{/isArray}}
         {{#isMap}}
         {{#items.isArray}}
@@ -241,6 +256,18 @@ class {{classname}}({{#parent}}{{{.}}}{{/parent}}{{^parent}}BaseModel{{/parent}}
             {{#allVars}}
             {{#isContainer}}
             {{#isArray}}
+            {{#items.isArray}}
+            {{#items.items.isPrimitiveType}}
+            "{{{name}}}": obj.get("{{{baseName}}}"){{^-last}},{{/-last}}
+            {{/items.items.isPrimitiveType}}
+            {{^items.items.isPrimitiveType}}
+            "{{{name}}}": [
+                    [{{{items.items.dataType}}}.from_dict(_inner_item) for _inner_item in _item]
+                    for _item in obj.get("{{{baseName}}}")
+                ] if obj.get("{{{baseName}}}") is not None else None{{^-last}},{{/-last}}
+            {{/items.items.isPrimitiveType}}
+            {{/items.isArray}}
+            {{^items.isArray}}
             {{^items.isPrimitiveType}}
             {{#items.isEnumOrRef}}
             "{{{name}}}": obj.get("{{{baseName}}}"){{^-last}},{{/-last}}
@@ -252,6 +279,7 @@ class {{classname}}({{#parent}}{{{.}}}{{/parent}}{{^parent}}BaseModel{{/parent}}
             {{#items.isPrimitiveType}}
             "{{{name}}}": obj.get("{{{baseName}}}"){{^-last}},{{/-last}}
             {{/items.isPrimitiveType}}
+            {{/items.isArray}}
             {{/isArray}}
             {{#isMap}}
             {{^items.isPrimitiveType}}

modules/openapi-generator/src/test/resources/3_0/python/petstore-with-fake-endpoints-models-for-testing.yaml

@@ -2220,4 +2220,13 @@ components:
             type: array
             items:
               $ref: "#/components/schemas/Tag"
+    ArrayOfArrayOfModel:
+      type: object
+      properties:
+        another_property:
+          type: array
+          items:
+            type: array
+            items:
+              $ref: "#/components/schemas/Tag"
 

samples/openapi3/client/petstore/python-aiohttp/.openapi-generator/FILES

@@ -10,6 +10,7 @@ docs/AnotherFakeApi.md
 docs/AnyOfColor.md
 docs/AnyOfPig.md
 docs/ApiResponse.md
+docs/ArrayOfArrayOfModel.md
 docs/ArrayOfArrayOfNumberOnly.md
 docs/ArrayOfNumberOnly.md
 docs/ArrayTest.md
@@ -100,6 +101,7 @@ petstore_api/models/animal.py
 petstore_api/models/any_of_color.py
 petstore_api/models/any_of_pig.py
 petstore_api/models/api_response.py
+petstore_api/models/array_of_array_of_model.py
 petstore_api/models/array_of_array_of_number_only.py
 petstore_api/models/array_of_number_only.py
 petstore_api/models/array_test.py

samples/openapi3/client/petstore/python-aiohttp/README.md

@@ -138,6 +138,7 @@ Class | Method | HTTP request | Description
  - [AnyOfColor](docs/AnyOfColor.md)
  - [AnyOfPig](docs/AnyOfPig.md)
  - [ApiResponse](docs/ApiResponse.md)
+ - [ArrayOfArrayOfModel](docs/ArrayOfArrayOfModel.md)
  - [ArrayOfArrayOfNumberOnly](docs/ArrayOfArrayOfNumberOnly.md)
  - [ArrayOfNumberOnly](docs/ArrayOfNumberOnly.md)
  - [ArrayTest](docs/ArrayTest.md)

samples/openapi3/client/petstore/python-aiohttp/docs/ArrayOfArrayOfModel.md

@@ -0,0 +1,28 @@
+# ArrayOfArrayOfModel
+
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**another_property** | **List[List[Tag]]** |  | [optional] 
+
+## Example
+
+```python
+from petstore_api.models.array_of_array_of_model import ArrayOfArrayOfModel
+
+# TODO update the JSON string below
+json = "{}"
+# create an instance of ArrayOfArrayOfModel from a JSON string
+array_of_array_of_model_instance = ArrayOfArrayOfModel.from_json(json)
+# print the JSON string representation of the object
+print ArrayOfArrayOfModel.to_json()
+
+# convert the object into a dict
+array_of_array_of_model_dict = array_of_array_of_model_instance.to_dict()
+# create an instance of ArrayOfArrayOfModel from a dict
+array_of_array_of_model_form_dict = array_of_array_of_model.from_dict(array_of_array_of_model_dict)
+```
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+

samples/openapi3/client/petstore/python-aiohttp/petstore_api/__init__.py

@@ -44,6 +44,7 @@ from petstore_api.models.animal import Animal
 from petstore_api.models.any_of_color import AnyOfColor
 from petstore_api.models.any_of_pig import AnyOfPig
 from petstore_api.models.api_response import ApiResponse
+from petstore_api.models.array_of_array_of_model import ArrayOfArrayOfModel
 from petstore_api.models.array_of_array_of_number_only import ArrayOfArrayOfNumberOnly
 from petstore_api.models.array_of_number_only import ArrayOfNumberOnly
 from petstore_api.models.array_test import ArrayTest

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/__init__.py

@@ -20,6 +20,7 @@ from petstore_api.models.animal import Animal
 from petstore_api.models.any_of_color import AnyOfColor
 from petstore_api.models.any_of_pig import AnyOfPig
 from petstore_api.models.api_response import ApiResponse
+from petstore_api.models.array_of_array_of_model import ArrayOfArrayOfModel
 from petstore_api.models.array_of_array_of_number_only import ArrayOfArrayOfNumberOnly
 from petstore_api.models.array_of_number_only import ArrayOfNumberOnly
 from petstore_api.models.array_test import ArrayTest

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/array_of_array_of_model.py

@@ -0,0 +1,83 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by OpenAPI Generator (https://openapi-generator.tech)
+
+    Do not edit the class manually.
+"""
+
+
+from __future__ import annotations
+import pprint
+import re  # noqa: F401
+import json
+
+
+from typing import List, Optional
+from pydantic import BaseModel, conlist
+from petstore_api.models.tag import Tag
+
+class ArrayOfArrayOfModel(BaseModel):
+    """
+    ArrayOfArrayOfModel
+    """
+    another_property: Optional[conlist(conlist(Tag))] = None
+    __properties = ["another_property"]
+
+    class Config:
+        """Pydantic configuration"""
+        allow_population_by_field_name = True
+        validate_assignment = True
+
+    def to_str(self) -> str:
+        """Returns the string representation of the model using alias"""
+        return pprint.pformat(self.dict(by_alias=True))
+
+    def to_json(self) -> str:
+        """Returns the JSON representation of the model using alias"""
+        return json.dumps(self.to_dict())
+
+    @classmethod
+    def from_json(cls, json_str: str) -> ArrayOfArrayOfModel:
+        """Create an instance of ArrayOfArrayOfModel from a JSON string"""
+        return cls.from_dict(json.loads(json_str))
+
+    def to_dict(self):
+        """Returns the dictionary representation of the model using alias"""
+        _dict = self.dict(by_alias=True,
+                          exclude={
+                          },
+                          exclude_none=True)
+        # override the default output from pydantic by calling `to_dict()` of each item in another_property (list of list)
+        _items = []
+        if self.another_property:
+            for _item in self.another_property:
+                if _item:
+                    _items.append(
+                         [_inner_item.to_dict() for _inner_item in _item if _inner_item is not None]
+                    )
+            _dict['another_property'] = _items
+        return _dict
+
+    @classmethod
+    def from_dict(cls, obj: dict) -> ArrayOfArrayOfModel:
+        """Create an instance of ArrayOfArrayOfModel from a dict"""
+        if obj is None:
+            return None
+
+        if not isinstance(obj, dict):
+            return ArrayOfArrayOfModel.parse_obj(obj)
+
+        _obj = ArrayOfArrayOfModel.parse_obj({
+            "another_property": [
+                    [Tag.from_dict(_inner_item) for _inner_item in _item]
+                    for _item in obj.get("another_property")
+                ] if obj.get("another_property") is not None else None
+        })
+        return _obj
+

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/array_test.py

@@ -55,12 +55,14 @@ class ArrayTest(BaseModel):
                           exclude={
                           },
                           exclude_none=True)
-        # override the default output from pydantic by calling `to_dict()` of each item in array_array_of_model (list)
+        # override the default output from pydantic by calling `to_dict()` of each item in array_array_of_model (list of list)
         _items = []
         if self.array_array_of_model:
             for _item in self.array_array_of_model:
                 if _item:
-                    _items.append(_item.to_dict())
+                    _items.append(
+                         [_inner_item.to_dict() for _inner_item in _item if _inner_item is not None]
+                    )
             _dict['array_array_of_model'] = _items
         return _dict
 
@@ -76,7 +78,10 @@ class ArrayTest(BaseModel):
         _obj = ArrayTest.parse_obj({
             "array_of_string": obj.get("array_of_string"),
             "array_array_of_integer": obj.get("array_array_of_integer"),
-            "array_array_of_model": [List[ReadOnlyFirst].from_dict(_item) for _item in obj.get("array_array_of_model")] if obj.get("array_array_of_model") is not None else None
+            "array_array_of_model": [
+                    [ReadOnlyFirst.from_dict(_inner_item) for _inner_item in _item]
+                    for _item in obj.get("array_array_of_model")
+                ] if obj.get("array_array_of_model") is not None else None
         })
         return _obj
 

samples/openapi3/client/petstore/python-aiohttp/test/test_array_of_array_of_model.py

@@ -0,0 +1,60 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by OpenAPI Generator (https://openapi-generator.tech)
+
+    Do not edit the class manually.
+"""
+
+
+import unittest
+import datetime
+
+import petstore_api
+from petstore_api.models.array_of_array_of_model import ArrayOfArrayOfModel  # noqa: E501
+from petstore_api.rest import ApiException
+
+class TestArrayOfArrayOfModel(unittest.TestCase):
+    """ArrayOfArrayOfModel unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def make_instance(self, include_optional):
+        """Test ArrayOfArrayOfModel
+            include_option is a boolean, when False only required
+            params are included, when True both required and
+            optional params are included """
+        # uncomment below to create an instance of `ArrayOfArrayOfModel`
+        """
+        model = petstore_api.models.array_of_array_of_model.ArrayOfArrayOfModel()  # noqa: E501
+        if include_optional :
+            return ArrayOfArrayOfModel(
+                another_property = [
+                    [
+                        petstore_api.models.tag.Tag(
+                            id = 56, 
+                            name = '', )
+                        ]
+                    ]
+            )
+        else :
+            return ArrayOfArrayOfModel(
+        )
+        """
+
+    def testArrayOfArrayOfModel(self):
+        """Test ArrayOfArrayOfModel"""
+        # inst_req_only = self.make_instance(include_optional=False)
+        # inst_req_and_optional = self.make_instance(include_optional=True)
+
+if __name__ == '__main__':
+    unittest.main()

samples/openapi3/client/petstore/python/.openapi-generator/FILES

@@ -10,6 +10,7 @@ docs/AnotherFakeApi.md
 docs/AnyOfColor.md
 docs/AnyOfPig.md
 docs/ApiResponse.md
+docs/ArrayOfArrayOfModel.md
 docs/ArrayOfArrayOfNumberOnly.md
 docs/ArrayOfNumberOnly.md
 docs/ArrayTest.md
@@ -100,6 +101,7 @@ petstore_api/models/animal.py
 petstore_api/models/any_of_color.py
 petstore_api/models/any_of_pig.py
 petstore_api/models/api_response.py
+petstore_api/models/array_of_array_of_model.py
 petstore_api/models/array_of_array_of_number_only.py
 petstore_api/models/array_of_number_only.py
 petstore_api/models/array_test.py

samples/openapi3/client/petstore/python/README.md

@@ -138,6 +138,7 @@ Class | Method | HTTP request | Description
  - [AnyOfColor](docs/AnyOfColor.md)
  - [AnyOfPig](docs/AnyOfPig.md)
  - [ApiResponse](docs/ApiResponse.md)
+ - [ArrayOfArrayOfModel](docs/ArrayOfArrayOfModel.md)
  - [ArrayOfArrayOfNumberOnly](docs/ArrayOfArrayOfNumberOnly.md)
  - [ArrayOfNumberOnly](docs/ArrayOfNumberOnly.md)
  - [ArrayTest](docs/ArrayTest.md)

samples/openapi3/client/petstore/python/docs/ArrayOfArrayOfModel.md

@@ -0,0 +1,28 @@
+# ArrayOfArrayOfModel
+
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**another_property** | **List[List[Tag]]** |  | [optional] 
+
+## Example
+
+```python
+from petstore_api.models.array_of_array_of_model import ArrayOfArrayOfModel
+
+# TODO update the JSON string below
+json = "{}"
+# create an instance of ArrayOfArrayOfModel from a JSON string
+array_of_array_of_model_instance = ArrayOfArrayOfModel.from_json(json)
+# print the JSON string representation of the object
+print ArrayOfArrayOfModel.to_json()
+
+# convert the object into a dict
+array_of_array_of_model_dict = array_of_array_of_model_instance.to_dict()
+# create an instance of ArrayOfArrayOfModel from a dict
+array_of_array_of_model_form_dict = array_of_array_of_model.from_dict(array_of_array_of_model_dict)
+```
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+

samples/openapi3/client/petstore/python/petstore_api/__init__.py

@@ -44,6 +44,7 @@ from petstore_api.models.animal import Animal
 from petstore_api.models.any_of_color import AnyOfColor
 from petstore_api.models.any_of_pig import AnyOfPig
 from petstore_api.models.api_response import ApiResponse
+from petstore_api.models.array_of_array_of_model import ArrayOfArrayOfModel
 from petstore_api.models.array_of_array_of_number_only import ArrayOfArrayOfNumberOnly
 from petstore_api.models.array_of_number_only import ArrayOfNumberOnly
 from petstore_api.models.array_test import ArrayTest

samples/openapi3/client/petstore/python/petstore_api/models/__init__.py

@@ -20,6 +20,7 @@ from petstore_api.models.animal import Animal
 from petstore_api.models.any_of_color import AnyOfColor
 from petstore_api.models.any_of_pig import AnyOfPig
 from petstore_api.models.api_response import ApiResponse
+from petstore_api.models.array_of_array_of_model import ArrayOfArrayOfModel
 from petstore_api.models.array_of_array_of_number_only import ArrayOfArrayOfNumberOnly
 from petstore_api.models.array_of_number_only import ArrayOfNumberOnly
 from petstore_api.models.array_test import ArrayTest

samples/openapi3/client/petstore/python/petstore_api/models/array_of_array_of_model.py

@@ -0,0 +1,95 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by OpenAPI Generator (https://openapi-generator.tech)
+
+    Do not edit the class manually.
+"""
+
+
+from __future__ import annotations
+import pprint
+import re  # noqa: F401
+import json
+
+
+from typing import List, Optional
+from pydantic import BaseModel, conlist
+from petstore_api.models.tag import Tag
+
+class ArrayOfArrayOfModel(BaseModel):
+    """
+    ArrayOfArrayOfModel
+    """
+    another_property: Optional[conlist(conlist(Tag))] = None
+    additional_properties: Dict[str, Any] = {}
+    __properties = ["another_property"]
+
+    class Config:
+        """Pydantic configuration"""
+        allow_population_by_field_name = True
+        validate_assignment = True
+
+    def to_str(self) -> str:
+        """Returns the string representation of the model using alias"""
+        return pprint.pformat(self.dict(by_alias=True))
+
+    def to_json(self) -> str:
+        """Returns the JSON representation of the model using alias"""
+        return json.dumps(self.to_dict())
+
+    @classmethod
+    def from_json(cls, json_str: str) -> ArrayOfArrayOfModel:
+        """Create an instance of ArrayOfArrayOfModel from a JSON string"""
+        return cls.from_dict(json.loads(json_str))
+
+    def to_dict(self):
+        """Returns the dictionary representation of the model using alias"""
+        _dict = self.dict(by_alias=True,
+                          exclude={
+                            "additional_properties"
+                          },
+                          exclude_none=True)
+        # override the default output from pydantic by calling `to_dict()` of each item in another_property (list of list)
+        _items = []
+        if self.another_property:
+            for _item in self.another_property:
+                if _item:
+                    _items.append(
+                         [_inner_item.to_dict() for _inner_item in _item if _inner_item is not None]
+                    )
+            _dict['another_property'] = _items
+        # puts key-value pairs in additional_properties in the top level
+        if self.additional_properties is not None:
+            for _key, _value in self.additional_properties.items():
+                _dict[_key] = _value
+
+        return _dict
+
+    @classmethod
+    def from_dict(cls, obj: dict) -> ArrayOfArrayOfModel:
+        """Create an instance of ArrayOfArrayOfModel from a dict"""
+        if obj is None:
+            return None
+
+        if not isinstance(obj, dict):
+            return ArrayOfArrayOfModel.parse_obj(obj)
+
+        _obj = ArrayOfArrayOfModel.parse_obj({
+            "another_property": [
+                    [Tag.from_dict(_inner_item) for _inner_item in _item]
+                    for _item in obj.get("another_property")
+                ] if obj.get("another_property") is not None else None
+        })
+        # store additional fields in additional_properties
+        for _key in obj.keys():
+            if _key not in cls.__properties:
+                _obj.additional_properties[_key] = obj.get(_key)
+
+        return _obj
+

samples/openapi3/client/petstore/python/petstore_api/models/array_test.py

@@ -57,12 +57,14 @@ class ArrayTest(BaseModel):
                             "additional_properties"
                           },
                           exclude_none=True)
-        # override the default output from pydantic by calling `to_dict()` of each item in array_array_of_model (list)
+        # override the default output from pydantic by calling `to_dict()` of each item in array_array_of_model (list of list)
         _items = []
         if self.array_array_of_model:
             for _item in self.array_array_of_model:
                 if _item:
-                    _items.append(_item.to_dict())
+                    _items.append(
+                         [_inner_item.to_dict() for _inner_item in _item if _inner_item is not None]
+                    )
             _dict['array_array_of_model'] = _items
         # puts key-value pairs in additional_properties in the top level
         if self.additional_properties is not None:
@@ -83,7 +85,10 @@ class ArrayTest(BaseModel):
         _obj = ArrayTest.parse_obj({
             "array_of_string": obj.get("array_of_string"),
             "array_array_of_integer": obj.get("array_array_of_integer"),
-            "array_array_of_model": [List[ReadOnlyFirst].from_dict(_item) for _item in obj.get("array_array_of_model")] if obj.get("array_array_of_model") is not None else None
+            "array_array_of_model": [
+                    [ReadOnlyFirst.from_dict(_inner_item) for _inner_item in _item]
+                    for _item in obj.get("array_array_of_model")
+                ] if obj.get("array_array_of_model") is not None else None
         })
         # store additional fields in additional_properties
         for _key in obj.keys():

samples/openapi3/client/petstore/python/test/test_array_of_array_of_model.py

@@ -0,0 +1,60 @@
+# coding: utf-8
+
+"""
+    OpenAPI Petstore
+
+    This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\  # noqa: E501
+
+    The version of the OpenAPI document: 1.0.0
+    Generated by OpenAPI Generator (https://openapi-generator.tech)
+
+    Do not edit the class manually.
+"""
+
+
+import unittest
+import datetime
+
+import petstore_api
+from petstore_api.models.array_of_array_of_model import ArrayOfArrayOfModel  # noqa: E501
+from petstore_api.rest import ApiException
+
+class TestArrayOfArrayOfModel(unittest.TestCase):
+    """ArrayOfArrayOfModel unit test stubs"""
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def make_instance(self, include_optional):
+        """Test ArrayOfArrayOfModel
+            include_option is a boolean, when False only required
+            params are included, when True both required and
+            optional params are included """
+        # uncomment below to create an instance of `ArrayOfArrayOfModel`
+        """
+        model = petstore_api.models.array_of_array_of_model.ArrayOfArrayOfModel()  # noqa: E501
+        if include_optional :
+            return ArrayOfArrayOfModel(
+                shop_id_to_org_online_lip_map = [
+                    [
+                        petstore_api.models.tag.Tag(
+                            id = 56, 
+                            name = '', )
+                        ]
+                    ]
+            )
+        else :
+            return ArrayOfArrayOfModel(
+        )
+        """
+
+    def testArrayOfArrayOfModel(self):
+        """Test ArrayOfArrayOfModel"""
+        # inst_req_only = self.make_instance(include_optional=False)
+        # inst_req_and_optional = self.make_instance(include_optional=True)
+
+if __name__ == '__main__':
+    unittest.main()

samples/openapi3/client/petstore/python/tests/test_model.py

@@ -492,3 +492,12 @@ class ModelTests(unittest.TestCase):
         self.assertEqual(a.to_json(), '{"shopIdToOrgOnlineLipMap": {"somekey": [{"id": 123, "name": "tag name"}]}}')
         a2 = petstore_api.MapOfArrayOfModel.from_dict(a.to_dict())
         self.assertEqual(a.to_dict(), a2.to_dict())
+
+    def test_array_of_array_of_model(self):
+        a = petstore_api.ArrayOfArrayOfModel()
+        t = petstore_api.Tag(id=123, name="tag name")
+        a.another_property = [[t]]
+        self.assertEqual(a.to_dict(), {'another_property': [[ {'id': 123, 'name': 'tag name'} ]]})
+        self.assertEqual(a.to_json(), '{"another_property": [[{"id": 123, "name": "tag name"}]]}')
+        a2 = petstore_api.ArrayOfArrayOfModel.from_dict(a.to_dict())
+        self.assertEqual(a.to_dict(), a2.to_dict())