summaryrefslogtreecommitdiff
path: root/config/karma.config.js
blob: 3eb220eed99f931663c80bbc2c46c18030eb7247 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
const path = require('path');
const glob = require('glob');
const chalk = require('chalk');
const webpack = require('webpack');
const argumentsParser = require('commander');
const webpackConfig = require('./webpack.config.js');

const ROOT_PATH = path.resolve(__dirname, '..');

function fatalError(message) {
  console.error(chalk.red(`\nError: ${message}\n`));
  process.exit(1);
}

// remove problematic plugins
if (webpackConfig.plugins) {
  webpackConfig.plugins = webpackConfig.plugins.filter(function(plugin) {
    return !(
      plugin instanceof webpack.optimize.CommonsChunkPlugin ||
      plugin instanceof webpack.optimize.ModuleConcatenationPlugin ||
      plugin instanceof webpack.DefinePlugin
    );
  });
}

const specFilters = argumentsParser
  .option(
    '-f, --filter-spec [filter]',
    'Filter run spec files by path. Multiple filters are like a logical OR.',
    (filter, memo) => {
      memo.push(filter, filter.replace(/\/?$/, '/**/*.js'));
      return memo;
    },
    []
  )
  .parse(process.argv).filterSpec;

if (specFilters.length) {
  const specsPath = /^(?:\.[\\\/])?spec[\\\/]javascripts[\\\/]/;

  // resolve filters
  let filteredSpecFiles = specFilters.map(filter =>
    glob
      .sync(filter, {
        root: ROOT_PATH,
        matchBase: true,
      })
      .filter(path => path.endsWith('spec.js'))
  );

  // flatten
  filteredSpecFiles = Array.prototype.concat.apply([], filteredSpecFiles);

  // remove duplicates
  filteredSpecFiles = [...new Set(filteredSpecFiles)];

  if (filteredSpecFiles.length < 1) {
    fatalError('Your filter did not match any test files.');
  }

  if (!filteredSpecFiles.every(file => specsPath.test(file))) {
    fatalError('Test files must be located within /spec/javascripts.');
  }

  const newContext = filteredSpecFiles.reduce((context, file) => {
    const relativePath = file.replace(specsPath, '');
    context[file] = `./${relativePath}`;
    return context;
  }, {});

  webpackConfig.plugins.push(
    new webpack.ContextReplacementPlugin(
      /spec[\\\/]javascripts$/,
      path.join(ROOT_PATH, 'spec/javascripts'),
      newContext
    )
  );
}

webpackConfig.entry = undefined;
webpackConfig.devtool = 'cheap-inline-source-map';

// Karma configuration
module.exports = function(config) {
  process.env.TZ = 'Etc/UTC';

  const progressReporter = process.env.CI ? 'mocha' : 'progress';

  const karmaConfig = {
    basePath: ROOT_PATH,
    browsers: ['ChromeHeadlessCustom'],
    customLaunchers: {
      ChromeHeadlessCustom: {
        base: 'ChromeHeadless',
        displayName: 'Chrome',
        flags: [
          // chrome cannot run in sandboxed mode inside a docker container unless it is run with
          // escalated kernel privileges (e.g. docker run --cap-add=CAP_SYS_ADMIN)
          '--no-sandbox',
        ],
      },
    },
    frameworks: ['jasmine'],
    files: [
      { pattern: 'spec/javascripts/test_bundle.js', watched: false },
      { pattern: 'spec/javascripts/fixtures/**/*@(.json|.html|.html.raw|.png)', included: false },
    ],
    preprocessors: {
      'spec/javascripts/**/*.js': ['webpack', 'sourcemap'],
    },
    reporters: [progressReporter],
    webpack: webpackConfig,
    webpackMiddleware: { stats: 'errors-only' },
  };

  if (process.env.BABEL_ENV === 'coverage' || process.env.NODE_ENV === 'coverage') {
    karmaConfig.reporters.push('coverage-istanbul');
    karmaConfig.coverageIstanbulReporter = {
      reports: ['html', 'text-summary'],
      dir: 'coverage-javascript/',
      subdir: '.',
      fixWebpackSourcePaths: true,
    };
    karmaConfig.browserNoActivityTimeout = 60000; // 60 seconds
  }

  if (process.env.DEBUG) {
    karmaConfig.logLevel = config.LOG_DEBUG;
    process.env.CHROME_LOG_FILE = process.env.CHROME_LOG_FILE || 'chrome_debug.log';
  }

  if (process.env.CHROME_LOG_FILE) {
    karmaConfig.customLaunchers.ChromeHeadlessCustom.flags.push('--enable-logging', '--v=1');
  }

  config.set(karmaConfig);
};