feat(cli): add responses for PingController.ping()

packages/cli/generators/app/templates/src/controllers/ping.controller.ts.ejs

@@ -1,15 +1,46 @@
-import {Request, RestBindings, get} from '@loopback/rest';
+import {Request, RestBindings, get, ResponseObject} from '@loopback/rest';
 import {inject} from '@loopback/context';
 
+/**
+ * OpenAPI response for ping()
+ */
+const PING_RESPONSE: ResponseObject = {
+  description: 'Ping Response',
+  content: {
+    'application/json': {
+      schema: {
+        type: 'object',
+        properties: {
+          greeting: {type: 'string'},
+          date: {type: 'string'},
+          url: {type: 'string'},
+          headers: {
+            type: 'object',
+            patternProperties: {
+              '^.*$': {type: 'string'},
+            },
+            additionalProperties: false,
+          },
+        },
+      },
+    },
+  },
+};
+
 /**
  * A simple controller to bounce back http requests
  */
 export class PingController {
   constructor(@inject(RestBindings.Http.REQUEST) private req: Request) {}
 
   // Map to `GET /ping`
-  @get('/ping')
+  @get('/ping', {
+    responses: {
+      '200': PING_RESPONSE,
+    },
+  })
   ping(): object {
+    // Reply with a greeting, the current time, the url, and request headers
     return {
       greeting: 'Hello from LoopBack',
       date: new Date(),

packages/cli/generators/app/templates/test/acceptance/ping.controller.acceptance.ts.ejs

@@ -2,6 +2,7 @@ import {
   Client,
   createRestAppClient,
   givenHttpServerConfig,
+  expect,
 } from '@loopback/testlab';
 import {<%= project.applicationName %>} from '../..';
 
@@ -25,7 +26,8 @@ describe('PingController', () => {
   });
 
   it('invokes GET /ping', async () => {
-    await client.get('/ping?msg=world').expect(200);
+    const res = await client.get('/ping?msg=world').expect(200);
+    expect(res.body).to.containEql({greeting: 'Hello from LoopBack'});
   });
 
   function givenAnApplication() {

packages/cli/test/integration/generators/app.integration.js

@@ -52,13 +52,17 @@ describe('app-generator specific files', () => {
     assert.fileContent('src/controllers/ping.controller.ts', /@inject/);
     assert.fileContent(
       'src/controllers/ping.controller.ts',
-      /@get\('\/ping'\)/,
+      /@get\('\/ping'\, \{/,
     );
     assert.fileContent('src/controllers/ping.controller.ts', /ping\(\)/);
     assert.fileContent(
       'src/controllers/ping.controller.ts',
       /\'\@loopback\/rest\'/,
     );
+    assert.fileContent(
+      'test/acceptance/ping.controller.acceptance.ts',
+      /describe\('PingController'/,
+    );
   });
 });
 

packages/rest/src/index.ts

@@ -37,3 +37,4 @@ import * as HttpErrors from 'http-errors';
 export {HttpErrors};
 
 export * from '@loopback/openapi-v3';
+export * from '@loopback/openapi-v3-types';