Finish Get CoursesCounter feature

Author: vilasmaciel

src/Contexts/Mooc/CoursesCounter/application/Find/CoursesCounterFinder.ts

@@ -7,7 +7,7 @@ export class CoursesCounterFinder {
 
   async run() {
     const counter = await this.repository.search();
-    if (counter === null) {
+    if (!counter) {
       throw new CoursesCounterNotExist();
     }
 

src/Contexts/Mooc/CoursesCounter/domain/CoursesCounterNotExist.ts

@@ -1,5 +1,5 @@
 export class CoursesCounterNotExist extends Error {
   constructor() {
-    super('The courses counter not exist');
+    super('The courses counter does not exists');
   }
 }

src/apps/mooc_backend/controllers/CoursesCounterGetController.ts

@@ -2,12 +2,20 @@ import { Controller } from './Controller';
 import { Request, Response } from 'express';
 import { CoursesCounterFinder } from '../../../Contexts/Mooc/CoursesCounter/application/Find/CoursesCounterFinder';
 import httpStatus = require('http-status');
+import { CoursesCounterNotExist } from '../../../Contexts/Mooc/CoursesCounter/domain/CoursesCounterNotExist';
 
 export class CoursesCounterGetController implements Controller {
   constructor(private coursesCounterFinder: CoursesCounterFinder) {}
   async run(req: Request, res: Response): Promise<void> {
-    const counter = this.coursesCounterFinder.run();
-
-    res.status(httpStatus.OK).send(counter);
+    try {
+      const counter = await this.coursesCounterFinder.run();
+      res.status(httpStatus.OK).send(counter);
+    } catch (e) {
+      if (e instanceof CoursesCounterNotExist) {
+        res.status(httpStatus.NOT_FOUND).send();
+      } else {
+        res.status(httpStatus.INTERNAL_SERVER_ERROR).send();
+      }
+    }
   }
 }

tests/apps/mooc_backend/features/step_definitions/controller.steps.ts

@@ -9,7 +9,6 @@ let _request: request.Test;
 let _response: request.Response;
 
 Given('I send a GET request to {string}', (route: string) => {
-  console.log(route)
   _request = request(app).get(route);
 });
 
@@ -27,6 +26,10 @@ Then('the response should be empty', () => {
   assert.deepEqual(_response.body, {});
 });
 
+Then('the response content should be:', response => {
+  assert.deepEqual(_response.body, response);
+});
+
 Before(async () => {
   const environmentArranger: Promise<EnvironmentArranger> = container.get('Mooc.EnvironmentArranger');
   await (await environmentArranger).arrange();

tests/apps/mooc_backend/features/step_definitions/evenBus.steps.ts

@@ -0,0 +1,8 @@
+import { Given } from 'cucumber';
+import container from '../../../../../src/apps/mooc_backend/config/dependency-injection';
+import { EventBus } from '../../../../../src/Contexts/Shared/domain/EventBus';
+
+Given('I send an event to the event bus:', (event: any) => {
+  const eventBus = container.get('Mooc.shared.EventBus') as EventBus;
+  eventBus.publish([event]);
+});