Bug 1139696 - Test for cross-compartment Set/Map clone (r=billm)

js/src/jit-test/tests/structured-clone/Map-Set-cross-compartment.js

@@ -6,3 +6,6 @@
 // Don't crash
 serialize(evalcx("new Set(['x', 'y'])"));
 serialize(evalcx("new Map([['x', 1]])"));
+
+assertEq(deserialize(serialize(evalcx("new Set([1, 2, 3])"))).has(1), true);
+assertEq(deserialize(serialize(evalcx("new Map([['x', 1]])"))).get('x'), 1);