Responses schema validation

openapi_spec_validator/validation/validators.py

@@ -140,6 +140,10 @@ def _iter_operation_errors(
             )
         self.operation_ids_registry.append(operation_id)
 
+        if "responses" in operation:
+            responses = operation / "responses"
+            yield from self._iter_responses_errors(responses)
+
         names = []
 
         parameters = None
@@ -161,6 +165,35 @@ def _iter_operation_errors(
                 )
         return
 
+    def _iter_responses_errors(
+        self, responses: Spec
+    ) -> Iterator[ValidationError]:
+        for response_code, response in responses.items():
+            yield from self._iter_response_errors(response_code, response)
+
+    def _iter_response_errors(
+        self, response_code: str, response: Spec
+    ) -> Iterator[ValidationError]:
+        # openapi 2
+        if "schema" in response:
+            schema = response / "schema"
+            yield from self._iter_schema_errors(schema)
+        # openapi 3
+        if "content" in response:
+            content = response / "content"
+            yield from self._iter_content_errors(content)
+
+    def _iter_content_errors(self, content: Spec) -> Iterator[ValidationError]:
+        for mimetype, media_type in content.items():
+            yield from self._iter_media_type_errors(mimetype, media_type)
+
+    def _iter_media_type_errors(
+        self, mimetype: str, media_type: Spec
+    ) -> Iterator[ValidationError]:
+        if "schema" in media_type:
+            schema = media_type / "schema"
+            yield from self._iter_schema_errors(schema)
+
     def _get_path_param_names(self, params: Spec) -> Iterator[str]:
         for param in params:
             if param["in"] == "path":

tests/integration/data/v2.0/missing-reference.yaml

@@ -0,0 +1,101 @@
+swagger: "2.0"
+info:
+  version: 1.0.0
+  title: Swagger Petstore
+  license:
+    name: MIT
+host: petstore.swagger.io
+basePath: /v1
+schemes:
+  - http
+consumes:
+  - application/json
+produces:
+  - application/json
+paths:
+  /pets:
+    get:
+      summary: List all pets
+      operationId: listPets
+      tags:
+        - pets
+      parameters:
+        - name: limit
+          in: query
+          description: How many items to return at one time (max 100)
+          required: false
+          type: integer
+          format: int32
+      responses:
+        200:
+          description: A paged array of pets
+          headers:
+            x-next:
+              type: string
+              description: A link to the next page of responses
+          schema:
+            $ref: 'definitions/Pets'
+        default:
+          description: unexpected error
+          schema:
+            $ref: '#/definitions/'
+    post:
+      summary: Create a pet
+      operationId: createPets
+      tags:
+        - pets
+      responses:
+        '201':
+          description: Null response
+        default:
+          description: unexpected error
+          schema:
+            $ref: '#/definitions/Error'
+  /pets/{petId}:
+    get:
+      summary: Info for a specific pet
+      operationId: showPetById
+      tags:
+        - pets
+      parameters:
+        - name: petId
+          in: path
+          required: true
+          description: The id of the pet to retrieve
+          type: string
+      responses:
+        '200':
+          description: Expected response to a valid request
+          schema:
+            $ref: '#/definitions/Pets'
+        default:
+          description: unexpected error
+          schema:
+            $ref: '#/definitions/Error'
+definitions:
+  Pet:
+    required:
+      - id
+      - name
+    properties:
+      id:
+        type: integer
+        format: int64
+      name:
+        type: string
+      tag:
+        type: string
+  Pets:
+    type: array
+    items:
+      $ref: '#/definitions/Pet'
+  Error:
+    required:
+      - code
+      - message
+    properties:
+      code:
+        type: integer
+        format: int32
+      message:
+        type: string

tests/integration/validation/test_validators.py

@@ -1,8 +1,58 @@
 import pytest
+from jsonschema.exceptions import RefResolutionError
 
 from openapi_spec_validator.validation.exceptions import OpenAPIValidationError
 
 
+class TestLocalOpenAPIv2Validator:
+
+    LOCAL_SOURCE_DIRECTORY = "data/v2.0/"
+
+    def local_test_suite_file_path(self, test_file):
+        return f"{self.LOCAL_SOURCE_DIRECTORY}{test_file}"
+
+    @pytest.mark.parametrize(
+        "spec_file",
+        [
+            "petstore.yaml",
+        ],
+    )
+    def test_valid(self, factory, validator_v2, spec_file):
+        spec_path = self.local_test_suite_file_path(spec_file)
+        spec = factory.spec_from_file(spec_path)
+        spec_url = factory.spec_file_url(spec_path)
+
+        return validator_v2.validate(spec, spec_url=spec_url)
+
+    @pytest.mark.parametrize(
+        "spec_file",
+        [
+            "empty.yaml",
+        ],
+    )
+    def test_validation_failed(self, factory, validator_v2, spec_file):
+        spec_path = self.local_test_suite_file_path(spec_file)
+        spec = factory.spec_from_file(spec_path)
+        spec_url = factory.spec_file_url(spec_path)
+
+        with pytest.raises(OpenAPIValidationError):
+            validator_v2.validate(spec, spec_url=spec_url)
+
+    @pytest.mark.parametrize(
+        "spec_file",
+        [
+            "missing-reference.yaml",
+        ],
+    )
+    def test_ref_failed(self, factory, validator_v2, spec_file):
+        spec_path = self.local_test_suite_file_path(spec_file)
+        spec = factory.spec_from_file(spec_path)
+        spec_url = factory.spec_file_url(spec_path)
+
+        with pytest.raises(RefResolutionError):
+            validator_v2.validate(spec, spec_url=spec_url)
+
+
 class TestLocalOpenAPIv30Validator:
 
     LOCAL_SOURCE_DIRECTORY = "data/v3.0/"
@@ -31,7 +81,7 @@ def test_valid(self, factory, validator_v30, spec_file):
             "empty.yaml",
         ],
     )
-    def test_falied(self, factory, validator_v30, spec_file):
+    def test_failed(self, factory, validator_v30, spec_file):
         spec_path = self.local_test_suite_file_path(spec_file)
         spec = factory.spec_from_file(spec_path)
         spec_url = factory.spec_file_url(spec_path)