summaryrefslogtreecommitdiffstats
path: root/js/src/jit-test/tests/debug/onEnterFrame-generator-resumption-04.js
blob: 969cb0c70b3cc5b4d396f837c0689df62c41b0ee (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
// Returning {throw:} from onEnterFrame when resuming inside a try block in a
// generator causes control to jump to the finally block.

let g = newGlobal({newCompartment: true});
g.eval(`
    function* gen() {
        try {
            yield 0;
            return "fail";
        } finally {
            return "ok"; // preempts exception unwinding
        }
    }
`)

let dbg = new Debugger(g);
dbg.onEnterFrame = frame => {
    if (!("hits" in frame)) {
        frame.hits = 1;
    } else if (++frame.hits == 3) {
        // First hit is when calling gen();
        // second hit is resuming at the implicit initial yield;
        // third hit is resuming inside the try block.
        return {throw: "fit"};
    }
};

let it = g.gen();
let result = it.next();
assertEq(result.done, false);
assertEq(result.value, 0);
result = it.next();
assertEq(result.done, true);
assertEq(result.value, "ok");