1// Copyright JS Foundation and other contributors, http://js.foundation 2// 3// Licensed under the Apache License, Version 2.0 (the "License"); 4// you may not use this file except in compliance with the License. 5// You may obtain a copy of the License at 6// 7// http://www.apache.org/licenses/LICENSE-2.0 8// 9// Unless required by applicable law or agreed to in writing, software 10// distributed under the License is distributed on an "AS IS" BASIS 11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12// See the License for the specific language governing permissions and 13// limitations under the License. 14 15/* This test checks async modifiers (nothing else). */ 16 17function check_syntax_error (code) 18{ 19 try { 20 eval (code) 21 assert (false) 22 } catch (e) { 23 assert (e instanceof SyntaxError) 24 } 25} 26 27check_syntax_error("function async f() {}") 28check_syntax_error("(a,b) async => 1") 29/* SyntaxError because arrow declaration is an assignment expression. */ 30check_syntax_error("async * (a,b) => 1") 31check_syntax_error("({ *async f() {} })") 32check_syntax_error("class C { async static f() {} }") 33check_syntax_error("class C { * async f() {} }") 34check_syntax_error("class C { static * async f() {} }") 35 36 37function check_promise(p, value) 38{ 39 assert(p instanceof Promise) 40 41 p.then(function(v) { 42 assert(v === value) 43 }) 44} 45 46var o = { 47 async f() { return 1 }, 48 async() { return 2 }, 49 async *x() {}, /* Parser test, async iterators are needed to work. */ 50} 51 52check_promise(o.f(), 1) 53assert(o.async() === 2) 54 55class C { 56 async f() { return 3 } 57 async *x() {} /* Parser test, async iterators are needed to work. */ 58 static async f() { return 4 } 59 static async *y() {} /* Parser test, async iterators are needed to work. */ 60 async() { return 5 } 61 static async() { return 6 } 62} 63 64var c = new C 65 66check_promise(c.f(), 3) 67check_promise(C.f(), 4) 68assert(c.async() === 5) 69assert(C.async() === 6) 70