Test based on a promise finishes successfully even if promise is rejected

[wuzyk]

test below should fail, but it doesn't

test: function(){
  assert(true);

  return Promise.resolve().then(function(){
    var c = a.b;
    assert(true);
  });
}

[lahmatiy]

Suppose it fixed by #15
Should we close it?

[wuzyk]

Yes