fixup! add test

packages/openapi-v3/src/__tests__/integration/controller-spec.integration.ts

@@ -8,7 +8,7 @@ import {
   ParameterObject,
   SchemaObject,
 } from '@loopback/openapi-v3-types';
-import {model, property} from '@loopback/repository';
+import {Entity, model, property} from '@loopback/repository';
 import {expect} from '@loopback/testlab';
 import {
   api,
@@ -307,6 +307,71 @@ describe('controller spec', () => {
       });
     });
 
+    it('allows operations to get definitions of models when defined through a different method', async () => {
+      @model()
+      class Todo extends Entity {
+        @property({
+          type: 'string',
+          required: true,
+        })
+        title: string;
+      }
+
+      class MyController {
+        @get('/todos', {
+          responses: {
+            '200': {
+              description: 'Array of Category model instances',
+              content: {
+                'application/json': {
+                  schema: {
+                    $ref: '#/definitions/Todo',
+                    definitions: {
+                      Todo: {
+                        title: 'Todo',
+                        properties: {
+                          title: {type: 'string'},
+                        },
+                      },
+                    },
+                  },
+                },
+              },
+            },
+          },
+        })
+        async find(): Promise<object[]> {
+          return []; // dummy implementation, it's never called
+        }
+
+        @get('/todos/{id}', {
+          responses: {
+            '200': {
+              content: {
+                'application/json': {
+                  schema: {$ref: '#/components/schemas/Todo'},
+                },
+              },
+            },
+          },
+        })
+        async findById(): Promise<Todo> {
+          return new Todo();
+        }
+      }
+
+      const spec = getControllerSpec(MyController);
+      const opSpec: OperationObject = spec.paths['/todos/{id}'].get;
+      const responseSpec = opSpec.responses['200'].content['application/json'];
+      expect(responseSpec.schema).to.deepEqual({
+        $ref: '#/components/schemas/Todo',
+      });
+
+      const controller = new MyController();
+      const todo = await controller.findById();
+      expect(todo instanceof Todo).to.be.true();
+    });
+
     it('returns undefined when it cannot find definition of referenced model', () => {
       class MyController {
         @get('/todos', {
@@ -358,7 +423,6 @@ describe('controller spec', () => {
                 'application/json': {
                   schema: {
                     $ref: '#/definitions/Todo',
-                    definitions: {},
                   },
                 },
               },