Bug 1185106 - Part 9.3: Add parser test for yield in async function statement in export default. r=till

MozReview-Commit-ID: 3OsdBSSyz64

js/src/tests/ecma_7/AsyncFunctions/syntax-modules.js

@@ -9,6 +9,11 @@ if (typeof parseModule === "function") {
     assertThrows(() => parseModule("var await = 5;"), SyntaxError);
     assertThrows(() => parseModule("export var await;"), SyntaxError);
     assertThrows(() => parseModule("async function f() { function g() { await 3; } }"), SyntaxError);
+
+    if (typeof Reflect !== "undefined" && Reflect.parse) {
+        assertThrows(() => Reflect.parse("export default async function() { yield; }", { target: "module" }), SyntaxError);
+        assertThrows(() => Reflect.parse("export default async function() { yield = 1; }", { target: "module" }), SyntaxError);
+    }
 }
 
 if (typeof reportCompare === "function")

js/src/tests/ecma_7/AsyncFunctions/yield.js

@@ -22,6 +22,7 @@ function testErrorArgsBodyStrict(argsbody) {
     testErrorArgsBody(argsbody, "'use strict'; ");
     assertThrows(() => Reflect.parse(`class X { async m${argsbody} }`), SyntaxError);
     assertThrows(() => Reflect.parse(`class X { static async m${argsbody} }`), SyntaxError);
+    assertThrows(() => Reflect.parse(`export default async function ${argsbody}`, { target: "module" }), SyntaxError);
 }
 
 if (typeof Reflect !== "undefined" && Reflect.parse) {