valuetosource-tosource-lookup-disabled.js

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// |jit-test| --disable-tosource; --setpref=legacy_tosource_lookup=false

// Ensure the object.toSource() path in ValueToSource is disabled if the

// legacy_tosource_lookup pref is false and we're not defining the toSource/uneval

// builtins.

function testPlain() {

  var toSourceCalled = false;

  var obj = {

    toSource() { toSourceCalled = true; },

    get [Symbol.iterator]() { return {}; }

};

  assertEq(valueToSource(obj), "({toSource() { toSourceCalled = true; }, get [Symbol.iterator]() { return {}; }})");

  assertEq(toSourceCalled, false);

  try {

    new Int8Array(obj);

  } catch {}

  assertEq(toSourceCalled, false);

testPlain();

function testProxy() {

  var log = [];

  var proxy = new Proxy({}, {get(target, prop) {

    log.push(prop);

    return {};

  }});

  assertEq(valueToSource(proxy), "({})");

  assertEq(log.length, 0);

  try {

    new Int8Array(proxy);

  } catch {}

  assertEq(log.length, 1);

  assertEq(log[0], Symbol.iterator);

testProxy();