Test function

Functions of HTTP classes

This method is applicable to all functions of HTTP-like triggers, including HTTP and API_GATEWAY.

Use the same test method as the application to test. For HTTP functions, use the supertest encapsulated createHttpRequest method to create HTTP clients.

The only difference from the application is that the createFunctionApp method is used to create a function application (app).

createFunctionApp is a customized method of createApp in the function scenario.

The HTTP test code is as follows:

import { createFunctionApp, close, createHttpRequest } from '@midwayjs/mock';
import { Framework, Application } from '@midwayjs/faas';

describe('test/hello_aliyun.test.ts', () => {

  it('should get result from api gateway trigger', async () => {
    
    const app: Application = await createFunctionApp<Framework>();
    
    const result = await createHttpRequest(app).get('/').query({
      name: 'zhangting',
    });
    expect(result.text).toEqual('hello zhangting');
    
    await close(app);

  });
});

Ordinary trigger

In addition to HTTP-like triggers, we also have other function triggers such as timers and object storage. Since these triggers are closely related to the gateway, they cannot be tested using HTTP behavior. Instead, they use traditional method calls.

Create a function app through the createFunctionApp method, obtain the class instance through the getServerlessInstance method, and then call it directly through the instance method and pass in the parameters for testing.

import { createFunctionApp, close, createHttpRequest } from '@midwayjs/mock';
import { Framework, Application } from '@midwayjs/faas';

describe('test/hello_aliyun.test.ts', () => {

   it('should get result from event trigger', async () => {
     //Create function app
     let app: Application = await createFunctionApp<Framework>();
    
     // Get the service class
     const instance = await app.getServerlessInstance<HelloAliyunService>(HelloAliyunService);
    
     // Call the function method and pass in parameters
     expect(await instance.handleEvent('hello world')).toEqual('hello world');
    
     await close(app);
   });
});