probot/test/apps/stats.test.ts

import express from 'express'
import nock from 'nock'
import request from 'supertest'
import { Application } from '../../src'
import appFn = require('../../src/apps/stats')
import { createApp } from './helper'

describe('stats app', () => {
  let app: Application
  let server: express.Application

  beforeEach(() => {
    // Clean up env variable
    delete process.env.DISABLE_STATS

    server = express()
  })

  describe('GET /probot/stats', () => {
    beforeEach(async () => {
      nock('https://api.github.com')
        .defaultReplyHeaders({ 'Content-Type': 'application/json' })
        .post('/app/installations/1/access_tokens').reply(200, { token: 'test' })
        .get('/app/installations?per_page=100').reply(200, [{ id: 1, account: { login: 'testing' } }])
        .get('/installation/repositories?per_page=100').reply(200, {
          repositories: [
            { private: true, stargazers_count: 1 },
            { private: false, stargazers_count: 2 }
          ]
        })

      app = createApp(appFn)
      server.use(app.router)
    })

    it('returns installation count and popular accounts', () => {
      return request(server).get('/probot/stats')
        .expect(200, { 'installations': 1, 'popular': [{ login: 'testing', stars: 2 }] })
    })
  })

  describe('can be disabled', () => {
    beforeEach(async () => {
      process.env.DISABLE_STATS = 'true'

      app = createApp(appFn)
      server.use(app.router)
    })

    it('/probot/stats returns 404', () => {
      return request(server).get('/probot/stats').expect(404)
    })
  })

  describe('it ignores spammy users', () => {
    beforeEach(async () => {
      process.env.IGNORED_ACCOUNTS = 'hiimbex,spammyUser'
      nock('https://api.github.com')
        .defaultReplyHeaders({ 'Content-Type': 'application/json' })
        .post('/app/installations/1/access_tokens').reply(200, { token: 'test' })
        .get('/app/installations?per_page=100').reply(200, [{ id: 1, account: { login: 'spammyUser' } }])
        .get('/installation/repositories?per_page=100').reply(200, {
          repositories: [
            { private: true, stargazers_count: 1 },
            { private: false, stargazers_count: 2 }
          ]
        })

      app = createApp(appFn)
      server.use(app.router)
    })

    it('returns installation count and popular accounts while excluding spammy users', () => {
      return request(server).get('/probot/stats')
        .expect(200, { 'installations': 1, 'popular': [] })
    })

    afterEach(async () => {
      delete process.env.IGNORED_ACCOUNTS
    })
  })
})