onEnterFrame-generator-resumption-01.js

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// A debugger can {throw:} from onEnterFrame at any resume point in a generator.

// It closes the generator.

load(libdir + "asserts.js");

let g = newGlobal({newCompartment: true});

g.eval(`

    function* f() { yield 1; }

    var exn = new TypeError("object too hairy");

`);

let dbg = new Debugger;

let gw = dbg.addDebuggee(g);

// Repeat the test for each onEnterFrame event.

// It fires up to three times:

// - when the generator g.f is called;

// - when we enter it to run to `yield 1`;

// - when we resume after the yield to run to the end.

for (let i = 0; i < 3; i++) {

    let hits = 0;

    dbg.onEnterFrame = frame => {

        return hits++ < i ? undefined : {throw: gw.makeDebuggeeValue(g.exn)};

};

    let genObj;

    assertThrowsValue(

        () => {

            genObj = g.f();

            for (let x of genObj) {}

},

        g.exn

);

    assertEq(hits, i + 1);

    if (hits > 1)

        assertEq(genObj.next().done, true);