Checks that async stack contains setTimeout
inner1 (test.js:11:4)
foo1 (test.js:14:2)
-- setTimeout --
inner2 (test.js:18:4)
foo2 (test.js:20:2)
-- setTimeout --
inner3 (test.js:25:4)
foo3 (test.js:27:2)
(anonymous) (expr.js:0:0)