amirmikhak / tap-webpack-plugin

Run TAP tests on every compile with webpack

tap-webpack-plugin

Run TAP tests on every compile with webpack

This is a plugin for webpack that runs the generated output bundle with Node.js and parses the output as TAP. This works well with webpack --watch as it will run your tests every time a file changes.

Note: You should use the target: 'node' option in your webpack configuration as the generated output will be run with Node.js.

Example

// Your webpack.config.js
var TapWebpackPlugin = require('tap-webpack-plugin')

module.exports = {
  target: 'node',

  entry: ['./test'],

  output: {
    path: 'output',
    filename: 'test.js'
  },

  plugins: [
    new TapWebpackPlugin()
  ]
}

// test.js
var test = require('tape')

test('successful test', function (t) {
  t.equal(1, 1)
  t.end()
})

Example App

You can also generate your main application bundle and a test bundle by exporting an array of configuration objects in the webpack.config.js:

// Your webpack.config.js
var TapWebpackPlugin = require('tap-webpack-plugin')

module.exports = [
  // main bundle configuration
  {
    entry: ['./main'],
    output: {
      path: 'output/dist',
      filename: 'main.js'
    }
  },

  // test bundle configuration
  {
    target: 'node',

    entry: ['./test'],

    output: {
      path: 'output',
      filename: 'test.js'
    },

    plugins: [
      new TapWebpackPlugin()
    ]
  }
];

Then run webpack just like normal and your main bundle will be generated and your tests will be compiled and run, all in one command!