transplant-window-proxy-2.js

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// Use newGlobal({transplantWindowProxy: wp}) to test different code paths in

// JS_TransplantObject.

// JS_TransplantObject case A: same compartment WindowProxy objects.

function testSameCompartment() {

  let g1 = newGlobal({newCompartment: true});

  g1.evaluate("var id = 1;");

  let g2 = newGlobal({sameCompartmentAs: g1, transplantWindowProxy: g1});

  assertEq(g1, g2);

  assertEq(g1.id, undefined);

  g2.evaluate("var id = 2");

  assertEq(g2.id, 2);

testSameCompartment();

// JS_TransplantObject case C: different compartment, no pre-existing CCW.

function testDifferentCompartment() {

  let g1 = newGlobal({newCompartment: true});

  g1.evaluate("var id = 1;");

  let g2 = newGlobal({newCompartment: true, transplantWindowProxy: g1});

  assertEq(g1, g2);

  assertEq(g1.id, undefined);

  g2.evaluate("var id = 2;");

  assertEq(g1.id, 2);

testDifferentCompartment();

// JS_TransplantObject case B: different compartment with pre-existing CCW.

function testDifferentCompartmentWithCCW() {

  let g1 = newGlobal({newCompartment: true});

  g1.evaluate("var id = 1;");

  // Pre-create the destination compartment and put a CCW for g1 into its

  // wrapper map.

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

  dest.evaluate("var id = 2;");

  dest.preExistingRef = g1;

  // Create a new global in dest's compartment (where the pre-existing CCW

  // lives) and transplant.

  let g2 = newGlobal({sameCompartmentAs: dest, transplantWindowProxy: g1});

  assertEq(g1, g2);

  assertEq(g1.id, undefined);

  g2.evaluate("var id = 3;");

  assertEq(g1.id, 3);

  assertEq(dest.id, 2);

  assertEq(dest.evaluate("preExistingRef.id"), 3);

testDifferentCompartmentWithCCW();