karma.conf.js

/* eslint-env node*/

// Karma configuration

/*
 * Test file globs can be passed with an argument.
 *
 * Example:
 *
 *  $ npm run test-jasmine -- tests/axes_test.js
 *
 * will only run the tests in axes_test.js
 *
 */

var constants = require('../../tasks/util/constants');

var arg = process.argv[4];

var isCI = !!process.env.CIRCLECI;
var testFileGlob = arg ? arg : 'tests/*_test.js';
var isSingleSuiteRun = (arg && arg.indexOf('bundle_tests/') === -1);
var isRequireJSTest = (arg && arg.indexOf('bundle_tests/requirejs') !== -1);
var isIE9Test = (arg && arg.indexOf('bundle_tests/ie9') !== -1);

var pathToMain = '../../lib/index.js';
var pathToJQuery = 'assets/jquery-1.8.3.min.js';


function func(config) {

    // level of logging
    // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
    //
    // NB: if you try config.LOG_DEBUG, you may actually be looking for karma-verbose-reporter.
    //     See CONTRIBUTING.md for additional notes on reporting.
    func.defaultConfig.logLevel = config.LOG_INFO;

    // without this, console logs in the plotly.js code don't print to
    // the terminal since karma v1.5.0
    //
    // See https://github.com/karma-runner/karma/commit/89a7a1c#commitcomment-21009216
    func.defaultConfig.browserConsoleLogOptions = {
        level: 'log'
    };

    config.set(func.defaultConfig);
}

func.defaultConfig = {

    // base path that will be used to resolve all patterns (eg. files, exclude)
    basePath: '.',

    // frameworks to use
    // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
    frameworks: ['jasmine', 'jasmine-spec-tags', 'browserify'],

    // list of files / patterns to load in the browser
    //
    // N.B. this field is filled below
    files: [],

    // list of files / pattern to exclude
    exclude: [],

    // preprocess matching files before serving them to the browser
    // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
    //
    // N.B. this field is filled below
    preprocessors: {},

    // test results reporter to use
    // possible values: 'dots', 'progress'
    // available reporters: https://npmjs.org/browse/keyword/karma-reporter
    //
    // See note in CONTRIBUTING.md about more verbose reporting via karma-verbose-reporter:
    // https://www.npmjs.com/package/karma-verbose-reporter ('verbose')
    //
    reporters: ['progress'],

    // web server port
    port: 9876,

    // enable / disable colors in the output (reporters and logs)
    colors: true,

    // enable / disable watching file and executing tests whenever any file changes
    autoWatch: !isCI,

    // if true, Karma captures browsers, runs the tests and exits
    singleRun: isCI,

    // how long will Karma wait for a message from a browser before disconnecting (30 ms)
    browserNoActivityTimeout: 30000,

    // start these browsers
    // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
    browsers: ['Chrome_WindowSized'],

    // custom browser options
    //
    // window-size values came from observing default size
    //
    // '--ignore-gpu-blacklist' allow to test WebGL on CI (!!!)
    customLaunchers: {
        Chrome_WindowSized: {
            base: 'Chrome',
            flags: ['--window-size=1035,617', '--ignore-gpu-blacklist']
        },
        Firefox_WindowSized: {
            base: 'Firefox',
            flags: ['--width=1035', '--height=617']
        }
    },

    browserify: {
        transform: ['../../tasks/util/shortcut_paths.js'],
        extensions: ['.js'],
        watch: !isCI,
        debug: true

    // unfortunately a few tests don't behave well on CI
    // using `karma-jasmine-spec-tags`
    // add @noCI to the spec description to skip a spec on CI
    client: {
        tagPrefix: '@',
        skipTags: isCI ? 'noCI' : null
    },

    }
};

// Add lib/index.js to single-suite runs,
// to avoid import conflicts due to plotly.js
// circular dependencies.
if(isSingleSuiteRun) {
    func.defaultConfig.files.push(
        pathToJQuery,
        pathToMain
    );

    func.defaultConfig.preprocessors[pathToMain] = ['browserify'];
    func.defaultConfig.preprocessors[testFileGlob] = ['browserify'];
}
else if(isRequireJSTest) {
    func.defaultConfig.files = [
        constants.pathToRequireJS,
        constants.pathToRequireJSFixture
    ];
}
else if(isIE9Test) {
    // load ie9_mock.js before plotly.js+test bundle
    // to catch reference errors that could occur
    // when plotly.js is first loaded.

    func.defaultConfig.files.push('./assets/ie9_mock.js');
    func.defaultConfig.preprocessors[testFileGlob] = ['browserify'];
}
else {
    func.defaultConfig.files.push(pathToJQuery);
    func.defaultConfig.preprocessors[testFileGlob] = ['browserify'];
}

// lastly, load test file glob
func.defaultConfig.files.push(testFileGlob);

module.exports = func;