Add failing test for optional header

tests/api/test_headers.py

@@ -42,3 +42,10 @@ def test_no_content_object_and_have_headers(simple_app):
     resp = app_client.get('/v1.0/test-204-with-headers-nocontent-obj')
     assert resp.status_code == 204
     assert 'X-Something' in resp.headers
+
+
+def test_optional_header(simple_openapi_app):
+    app_client = simple_openapi_app.app.test_client()
+    resp = app_client.get('/v1.0/test-optional-headers')
+    assert resp.status_code == 200
+    assert 'X-Optional-Header' not in resp.headers

tests/fakeapi/hello/__init__.py

@@ -602,3 +602,7 @@ def get_date():
 
 def get_uuid():
     return {'value': uuid.UUID(hex='e7ff66d0-3ec2-4c4e-bed0-6e4723c24c51')}
+
+
+def test_optional_headers():
+    return {}, 200

tests/fixtures/simple/openapi.yaml

@@ -1140,6 +1140,24 @@ paths:
             application/json:
               schema:
                 type: object
+  /test-optional-headers:
+    get:
+      operationId: fakeapi.hello.test_optional_headers
+      responses:
+        '200':
+          description: Some object response
+          content:
+            application/json:
+              schema:
+                type: object
+          headers:
+            X-Optional-Header:
+              description: Optional header
+              schema:
+                type: string
+              required: False
+
+
 
 servers:
   - url: http://localhost:{port}/{basePath}