wishthis/node_modules/fomantic-ui/test/meteor/assets.js

let assets = [
    'dist/themes/default/assets/images/flags.png',
];

// Check that the font files are downloadable. Meteor places assets at /packages/<packageName>/.
assets.forEach(function (path) {
    Tinytest.addAsync('image ' + path + ' is shipped', function (test, done) {
        HTTP.get('/packages/semantic_ui/' + path, function callback(error, result) {
            if (error) {
                test.fail({ message: 'Image failed to load' });
            } else {
                test.isTrue(result.content.length > 10000, 'Image ' + path + ' could not be downloaded');
            }
            done();
        });
    });
});