any.js (2364B)
1 // Smoke test for `Promise.any`, test262 should cover the function in 2 // more detail. 3 4 function expectedError() { 5 reportCompare(true, false, "expected error"); 6 } 7 8 // Empty elements. 9 Promise.any([]).then(expectedError, e => { 10 assertEq(e instanceof AggregateError, true); 11 assertEq(e.errors.length, 0); 12 }); 13 14 // Single element. 15 Promise.any([Promise.resolve(0)]).then(v => { 16 assertEq(v, 0); 17 }); 18 Promise.any([Promise.reject(1)]).then(expectedError, e => { 19 assertEq(e instanceof AggregateError, true); 20 assertEq(e.errors.length, 1); 21 assertEq(e.errors[0], 1); 22 }); 23 24 // Multiple elements. 25 Promise.any([Promise.resolve(1), Promise.resolve(2)]).then(v => { 26 assertEq(v, 1); 27 }); 28 Promise.any([Promise.resolve(3), Promise.reject(4)]).then(v => { 29 assertEq(v, 3); 30 }); 31 Promise.any([Promise.reject(5), Promise.resolve(6)]).then(v => { 32 assertEq(v, 6); 33 }); 34 Promise.any([Promise.reject(7), Promise.reject(8)]).then(expectedError, e => { 35 assertEq(e instanceof AggregateError, true); 36 assertEq(e.errors.length, 2); 37 assertEq(e.errors[0], 7); 38 assertEq(e.errors[1], 8); 39 }); 40 41 // Cross-Realm tests. 42 // 43 // Note: When |g| is a cross-compartment global, Promise.any creates the errors 44 // array and the AggregateError in |g|'s Realm. This doesn't follow the spec, but 45 // the code in js/src/builtin/Promise.cpp claims this is useful when the Promise 46 // compartment is less-privileged. This means for this test we can't use 47 // assertDeepEq below, because the result array/error may have the wrong prototype. 48 let g = newGlobal(); 49 50 if (typeof isSameCompartment !== "function") { 51 var isSameCompartment = SpecialPowers.Cu.getJSTestingFunctions().isSameCompartment; 52 } 53 54 // Test wrapping when no `Promise.any Reject Element Function` is called. 55 Promise.any.call(g.Promise, []).then(expectedError, e => { 56 assertEq(e.name, "AggregateError"); 57 58 assertEq(isSameCompartment(e, g), true); 59 assertEq(isSameCompartment(e.errors, g), true); 60 61 assertEq(e.errors.length, 0); 62 }); 63 64 // Test wrapping in `Promise.any Reject Element Function`. 65 Promise.any.call(g.Promise, [Promise.reject("err")]).then(expectedError, e => { 66 assertEq(e.name, "AggregateError"); 67 68 assertEq(isSameCompartment(e, g), true); 69 assertEq(isSameCompartment(e.errors, g), true); 70 71 assertEq(e.errors.length, 1); 72 assertEq(e.errors[0], "err"); 73 }); 74 75 if (typeof reportCompare === "function") 76 reportCompare(0, 0);