karma-test-shim.js

// Tun on full stack traces in errors to help debugging
Error.stackTraceLimit = Infinity;

jasmine.DEFAULT_TIMEOUT_INTERVAL = 1000;

// // Cancel Karma's synchronous start,
// // we will call `__karma__.start()` later, once all the specs are loaded.
__karma__.loaded = function () {
};

System.config({
    packages: {
        'base/app': {
            defaultExtension: false,
            format: 'register',
            map: Object.keys(window.__karma__.files).filter(onlyAppFiles).reduce(createPathRecords, {})
        }
    }
});

Promise.all([
    System.import('angular2/src/platform/browser/browser_adapter'),
    System.import('angular2/platform/testing/browser'),
    System.import('angular2/testing')
]).then(function (modules) {
        var browser_adapter = modules[0];
        var providers = modules[1];
        var testing = modules[2];
        testing.setBaseTestProviders(
            providers.TEST_BROWSER_PLATFORM_PROVIDERS,
            providers.TEST_BROWSER_APPLICATION_PROVIDERS
        );
        browser_adapter.BrowserDomAdapter.makeCurrent();
    })
    .then(function () {
        return Promise.all(resolveTestFiles());
    })
    .then(function () {
        __karma__.start();
    }, function (error) {
        __karma__.error(error.stack || error);
    });

function createPathRecords(pathsMapping, appPath) {
    // creates local module name mapping to global path with karma's fingerprint in path, e.g.:
    // './vg-player/vg-player':
    // '/base/app/vg-player/vg-player.js?f4523daf879cfb7310ef6242682ccf10b2041b3e'
    var pathParts = appPath.split('/');
    var moduleName = './' + pathParts.slice(Math.max(pathParts.length - 2, 1)).join('/');
    moduleName = moduleName.replace(/\.js$/, '').replace(/^\.\/app/, '.');
    pathsMapping[moduleName] = appPath + '?' + window.__karma__.files[appPath];
    return pathsMapping;
}

function onlyAppFiles(filePath) {
    return /\/base\/app\/(?!.*\.spec\.js$).*\.js$/.test(filePath);
}

function onlySpecFiles(path) {
    return /\.spec\.js$/.test(path);
}

function resolveTestFiles() {
    return Object.keys(window.__karma__.files)  // All files served by Karma.
        .filter(onlySpecFiles)
        .map(function (moduleName) {
            // loads all spec files via their global module names (e.g.
            // 'base/app/vg-player/vg-player.spec')
            return System.import(moduleName);
        });
}