js/src/jit-test/tests/generators/wrappers.js


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27

// Generator methods work transparently on CrossCompartmentWrappers.

load(libdir + "asserts.js");
load(libdir + "iteration.js");

var g = newGlobal();

function *gen3() { yield 1; yield 2; }
it = gen3();
g.eval("function *gen4() { yield 5; yield 6; }; var it4 = gen4();");

// StarGenerator.next
assertIteratorResult(it.next.call(g.it4), 5, false)

// StarGenerator.throw
assertThrowsValue(() => it.throw.call(g.it4, 8), 8);

// StarGenerator.return
assertIteratorResult(it.return.call(g.it4, 8), 8, true);

// Other objects should throw.
try {
    it.next.call([]);
    assertEq(0, 1);
} catch (e) {
    assertEq(e.toString().includes("called on incompatible Array"), true);
}