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// The argument to WeakMap can be a generator.
var k1 = {};
var v1 = 42;
var k2 = {};
var v2 = 43;
var k3 = {};
var done = false;
function data() {
yield [k1, v1];
yield [k2, v2];
done = true;
};
var m = new WeakMap(data());
assertEq(done, true); // the constructor consumes the argument
assertEq(m.has(k1), true);
assertEq(m.has(k2), true);
assertEq(m.has(k3), false);
assertEq(m.get(k1), v1);
assertEq(m.get(k2), v2);
assertEq(m.get(k3), undefined);
done = false;
function* data2() {
yield [k1, v1];
yield [k2, v2];
done = true;
};
m = new WeakMap(data2());
assertEq(done, true); // the constructor consumes the argument
assertEq(m.has(k1), true);
assertEq(m.has(k2), true);
assertEq(m.has(k3), false);
assertEq(m.get(k1), v1);
assertEq(m.get(k2), v2);
assertEq(m.get(k3), undefined);
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