karma-jspm load only some tests

adapter.js

var filterTests = document.location.search.match(/[\?\&]test=[a-z-\.]+/gi).map(function (test) {
    return (test.split('=')[1] + '.spec.js').toLowerCase();
}) || [];
var filterLoadedTests = filterTests.length ? function (spec) {
    var found = false;
    filterTests.forEach(function (test) {
        found = found || spec.toLowerCase().indexOf(test) !== -1;
    });
    return found;
} : function () {
    return true;
};
karma.config.jspm.resolvedModuleIDs = karma.config.jspm.resolvedModuleIDs.filter(filterLoadedTests);