ccw.js - mozsearch

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// |reftest| shell-option(--enable-shadow-realms) skip-if(!xulRuntime.shell)

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

var sr = g.evaluate(`new ShadowRealm()`);

// sr should be a CCW to a ShadowRealm.

ShadowRealm.prototype.evaluate.call(sr, "var x = 10");

assertEq(sr.evaluate("x"), 10);

// wrappedf should *not* be a CCW, because we're using this realm's ShadowRealm.prototype.evaluate,

// and so the active realm when invoking will be this current realm.

//

// However, the target function (wrappedf's f)  comes from another compartment, and will have to be a CCW.

var wrappedf = ShadowRealm.prototype.evaluate.call(sr, "function f() { return 10; }; f");

assertEq(wrappedf(), 10);

var evaluate_from_other_realm = g.evaluate('ShadowRealm.prototype.evaluate');

// wrappedb should be a CCW, since the callee of the .call comes from the other

// compartment.

var wrappedb = evaluate_from_other_realm.call(sr, "function b() { return 12; }; b");

assertEq(wrappedb(), 12);

nukeAllCCWs()

// This throws, but the dead object message is lost and replaced with the wrapped function

// object message.

assertThrowsInstanceOf(() => wrappedf(), TypeError);

assertThrowsInstanceOf(() => wrappedb(), TypeError);

if (typeof reportCompare === 'function')

    reportCompare(true, true);