@unic/estatico-puppeteer

Uses Puppeteer to check for JS errors and run tests

Installation

$ npm install --save-dev @unic/estatico-puppeteer

Usage

const gulp = require('gulp');
const env = require('minimist')(process.argv.slice(2));

/**
 * JavaScript testing task
 * Uses Puppeteer to check for JS errors and run tests
 *
 * Using `--watch` (or manually setting `env` to `{ watch: true }`) starts file watcher
 * When combined with `--skipBuild`, the task will not run immediately but only after changes
 */
gulp.task('js:test', () => {
  const task = require('@unic/estatico-puppeteer');

  const instance = task({
    src: [
      './dist/{pages,modules,demo}/**/*.html',
    ],
    srcBase: './dist',
    watch: {
      src: [
        './src/**/*.test.js',
      ],
      name: 'js:test',
    },
    viewports: {
      mobile: {
        width: 400,
        height: 1000,
        isMobile: true,
      },
      // tablet: {
      //   width: 700,
      //   height: 1000,
      //   isMobile: true,
      // },
      desktop: {
        width: 1400,
        height: 1000,
      },
    },
    plugins: {
      pool: {
        // How many pages to open in parallel
        max: 10,
      },
      interact: async (page) => {
        // Run some tests and log results (or throw an error)
      },
    },
  }, env);
  
  // Don't immediately run task when skipping build
  if (env.watch && env.skipBuild) {
    return instance;
  }

  return instance();
});

Run task (assuming the project's package.json specifies "scripts": { "gulp": "gulp" }): $ npm run gulp js:test

See possible flags specified above.

API

plugin(options, env) => taskFn

options

src (required)

Type: Array or String Default: null

Passed to gulp.src.

srcBase (required)

Type: String Default: null

Passed as base option to gulp.src.

watch

Type: Object Default: null

Passed to file watcher when --watch is used.

viewports

Type: Object Default: null

Every item is passed to Puppeteer's setViewport.

plugins

Type: Object

plugins.puppeteer

Type: Object Default: null

Passed to Puppeteer.

plugins.pool

Type: Object Default: { max: 10 }

Passed to generic-pool. This allows you to open multiple pages in parallel, speeding up whatever task you are running.

plugins.interact

Type: async fn(page) Default: null

Interact with page (evaluating code, taking screenshots etc.). See Puppeteer for available API on page object.

logger

Type: { info: Function, debug: Function, error: Function } Default: Instance of estatico-utils's Logger utility.

Set of logger utility functions used within the task.

env

Type: Object Default: {}

Result from parsing CLI arguments via minimist, e.g. { dev: true, watch: true }. Some defaults are affected by this, see above.

License

Apache 2.0.