Frame-onPop-generators-04.js

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// Terminating a generator from the onPop callback for its initial yield

// leaves the Frame in a sane but inactive state.

load(libdir + "asserts.js");

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

g.eval("function* f(x) { yield x; }");

let dbg = new Debugger;

let gw = dbg.addDebuggee(g);

let genFrame = null;

dbg.onDebuggerStatement = frame => {

    dbg.onEnterFrame = frame => {

        if (frame.callee == gw.getOwnPropertyDescriptor("f").value) {

            genFrame = frame;

            frame.onPop = completion => null;

};

    assertEq(frame.eval("f(0);"), null);

};

g.eval("debugger;");

assertEq(genFrame instanceof Debugger.Frame, true);

assertEq(genFrame.onStack, false);

assertThrowsInstanceOf(() => genFrame.callee, Error);