describe("sample", function(){

    it("should return testdata", function(){
        expect(testfunc()).toEqual('testdata');
    });

    
    it("checks that async / await works", async() => {
        function asyncFunctionSample(x) {
            return new Promise(
                resolve => {
                    setTimeout(()=> {resolve(x);}, 3000);
                }
            );
        }

        async function check(x) {
            var retval = asyncFunctionSample(10);
            return x + await retval;
        }

        var v = await check(10);
        expect(v).toBe(20);


    });

});