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);
                }
                /*,
                reject => {
                    setTimeout(()=> {reject(x);}, 2000);
                }*/
            );
        }

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

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


    });


    it ("checks allowing creating rejected promises", (done) => {
        Promise.reject('some reason').catch(done);
    }); 

    it('checks that promises work', function() {
    function someAsyncFunction(x) {
            return new Promise(
                resolve => {
                    setTimeout(()=> {resolve(x*2);}, 3000);
                }
            );
        }
        return someAsyncFunction(10).then(function (result) {
            expect(result).toEqual(20);
        });
    });

});