Fun with Stamps. Episode 17. Easy 100% unit test coverage in JS: - app2-test1.js

app2-test1.js

describe('express app setup', () => {
  const http = {
    createServer() {
      return {on() {}, listen() {}};
    }
  };
  const App = require('../app2').props({http});

  it('should share ./public', (done) => {
    const express = () => ({set() {}, use() {}});
    express.static = (path) => {
      if (path.endsWith('/public')) {
        done();
      }
    };
    const MockedApp = App.props({express});

    MockedApp();
  });

  it('should not share non ./public', () => {
    const express = () => ({set() {}, use() {}});
    express.static = (path) => {
      if (!path.endsWith('/public')) {
        throw new Error('Should not share non public files');
      }
    };
    const MockedApp = App.props({express});

    MockedApp();
  });

  it('should set urlencoded external=false', (done) => {
    const bodyParser = {
      json() { return () => {}; },
      urlencoded({extended}) {
        if (extended !== false) {
          throw new Error('urlencoded extended option must be false');
        }
        done();
        return () => {};
      }
    };
    const MockedApp = App.props({bodyParser});

    MockedApp();
  });
});