Check in codegen test expectations.

test/codegen/expect/language/async_star_test_04_multi.js

+dart_library.library('language/async_star_test_04_multi', null, /* Imports */[
+  'dart_sdk',
+  'unittest'
+], function load__async_star_test_04_multi(exports, dart_sdk, unittest) {
+  'use strict';
+  const core = dart_sdk.core;
+  const _interceptors = dart_sdk._interceptors;
+  const async = dart_sdk.async;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const unittest$ = unittest.unittest;
+  const src__matcher__expect = unittest.src__matcher__expect;
+  const src__matcher__core_matchers = unittest.src__matcher__core_matchers;
+  const src__matcher__numeric_matchers = unittest.src__matcher__numeric_matchers;
+  const async_star_test_04_multi = Object.create(null);
+  let JSArrayOfint = () => (JSArrayOfint = dart.constFn(_interceptors.JSArray$(core.int)))();
+  let JSArrayOfObject = () => (JSArrayOfObject = dart.constFn(_interceptors.JSArray$(core.Object)))();
+  let FutureOfObject = () => (FutureOfObject = dart.constFn(async.Future$(core.Object)))();
+  let StreamOfObject = () => (StreamOfObject = dart.constFn(async.Stream$(core.Object)))();
+  let JSArrayOfString = () => (JSArrayOfString = dart.constFn(_interceptors.JSArray$(core.String)))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  let dynamicTodynamic = () => (dynamicTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [dart.dynamic])))();
+  let dynamicTovoid = () => (dynamicTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [dart.dynamic])))();
+  let VoidToFuture = () => (VoidToFuture = dart.constFn(dart.definiteFunctionType(async.Future, [])))();
+  let VoidTovoid = () => (VoidTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [])))();
+  let VoidToObject = () => (VoidToObject = dart.constFn(dart.definiteFunctionType(core.Object, [])))();
+  let VoidToFutureOfObject = () => (VoidToFutureOfObject = dart.constFn(dart.definiteFunctionType(FutureOfObject(), [])))();
+  let VoidToStreamOfObject = () => (VoidToStreamOfObject = dart.constFn(dart.definiteFunctionType(StreamOfObject(), [])))();
+  let dynamicToFuture = () => (dynamicToFuture = dart.constFn(dart.definiteFunctionType(async.Future, [dart.dynamic])))();
+  let VoidToint = () => (VoidToint = dart.constFn(dart.definiteFunctionType(core.int, [])))();
+  let intTodynamic = () => (intTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [core.int])))();
+  let dynamicAnddynamicTodynamic = () => (dynamicAnddynamicTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [dart.dynamic, dart.dynamic])))();
+  let dynamicAndEventSinkTovoid = () => (dynamicAndEventSinkTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [dart.dynamic, async.EventSink])))();
+  let ObjectAndStackTraceAndEventSinkTovoid = () => (ObjectAndStackTraceAndEventSinkTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [core.Object, core.StackTrace, async.EventSink])))();
+  let EventSinkTovoid = () => (EventSinkTovoid = dart.constFn(dart.definiteFunctionType(dart.void, [async.EventSink])))();
+  async_star_test_04_multi.main = function() {
+    unittest$.group("basic", dart.fn(() => {
+      unittest$.test("empty", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return dart.dsend(dart.dsend(f(), 'toList'), 'then', dart.fn(v => {
+          src__matcher__expect.expect(v, src__matcher__core_matchers.equals([]));
+        }, dynamicTodynamic()));
+      }, VoidTodynamic()));
+      unittest$.test("single", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            if (stream.add(42)) return;
+            yield;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return dart.dsend(dart.dsend(f(), 'toList'), 'then', dart.fn(v => {
+          src__matcher__expect.expect(v, src__matcher__core_matchers.equals(JSArrayOfint().of([42])));
+        }, dynamicTodynamic()));
+      }, VoidTodynamic()));
+      unittest$.test("call delays", dart.fn(() => {
+        let list = [];
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            list[dartx.add](1);
+            if (stream.add(2)) return;
+            yield;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        let res = dart.dsend(f(), 'forEach', dart.fn(x => list[dartx.add](x), dynamicTovoid()));
+        list[dartx.add](0);
+        return dart.dsend(res, 'whenComplete', dart.fn(() => {
+          src__matcher__expect.expect(list, src__matcher__core_matchers.equals(JSArrayOfint().of([0, 1, 2])));
+        }, VoidTodynamic()));
+      }, VoidTodynamic()));
+      unittest$.test("throws", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            if (stream.add(1)) return;
+            yield;
+            dart.throw(2);
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        let completer = async.Completer.new();
+        let list = [];
+        dart.dsend(f(), 'listen', dart.fn(x => list[dartx.add](x), dynamicTovoid()), {onError: dart.fn(v => list[dartx.add](dart.str`${v}`), dynamicTovoid()), onDone: dart.bind(completer, 'complete')});
+        return completer.future.whenComplete(dart.fn(() => {
+          src__matcher__expect.expect(list, src__matcher__core_matchers.equals(JSArrayOfObject().of([1, "2"])));
+        }, VoidTodynamic()));
+      }, VoidToFuture()));
+      unittest$.test("multiple", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            for (let i = 0; i < 10; i++) {
+              if (stream.add(i)) return;
+              yield;
+            }
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), core.List.generate(10, async_star_test_04_multi.id));
+      }, VoidTodynamic()));
+      unittest$.test("allows await", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            let x = (yield async.Future.value(42));
+            if (stream.add(x)) return;
+            yield;
+            x = (yield async.Future.value(42));
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([42]));
+      }, VoidTodynamic()));
+      unittest$.test("allows await in loop", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            for (let i = 0; i < 10; i++) {
+              if (stream.add(yield i)) return;
+              yield;
+            }
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), core.List.generate(10, async_star_test_04_multi.id));
+      }, VoidTodynamic()));
+      unittest$.test("allows yield*", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            if (stream.addStream(async.Stream.fromIterable(JSArrayOfint().of([1, 2, 3])))) return;
+            yield;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([1, 2, 3]));
+      }, VoidTodynamic()));
+      unittest$.test("allows yield* of async*", dart.fn(() => {
+        function f(n) {
+          return dart.asyncStar(function*(stream, n) {
+            if (stream.add(n)) return;
+            yield;
+            if (dart.equals(n, 0)) return;
+            if (stream.addStream(async.Stream._check(f(dart.dsend(n, '-', 1))))) return;
+            yield;
+            if (stream.add(n)) return;
+            yield;
+          }, dart.dynamic, n);
+        }
+        dart.fn(f, dynamicTodynamic());
+        return async_star_test_04_multi.expectList(f(3), JSArrayOfint().of([3, 2, 1, 0, 1, 2, 3]));
+      }, VoidTodynamic()));
+      unittest$.test("Cannot yield* non-stream", dart.fn(() => {
+        function f(s) {
+          return dart.asyncStar(function*(stream, s) {
+            if (stream.addStream(async.Stream._check(s))) return;
+            yield;
+          }, dart.dynamic, s);
+        }
+        dart.fn(f, dynamicTodynamic());
+        return dart.dsend(dart.dload(dart.dsend(f(42), 'transform', async_star_test_04_multi.getErrors), 'single'), 'then', dart.fn(v => {
+          src__matcher__expect.expect(core.Error.is(v), src__matcher__core_matchers.isTrue);
+        }, dynamicTodynamic()));
+      }, VoidTodynamic()));
+      unittest$.test("Cannot yield* non-stream", dart.fn(() => {
+        function f(s) {
+          return dart.asyncStar(function*(stream, s) {
+            if (stream.addStream(async.Stream._check(s))) return;
+            yield;
+          }, dart.dynamic, s);
+        }
+        dart.fn(f, dynamicTodynamic());
+        return dart.dsend(dart.dload(dart.dsend(f(new async_star_test_04_multi.NotAStream()), 'transform', async_star_test_04_multi.getErrors), 'single'), 'then', dart.fn(v => {
+          src__matcher__expect.expect(core.Error.is(v), src__matcher__core_matchers.isTrue);
+        }, dynamicTodynamic()));
+      }, VoidTodynamic()));
+    }, VoidTovoid()));
+    unittest$.group("yield statement context", dart.fn(() => {
+      unittest$.test("plain", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            if (stream.add(0)) return;
+            yield;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([0]));
+      }, VoidTodynamic()));
+      unittest$.test("if-then-else", dart.fn(() => {
+        function f(b) {
+          return dart.asyncStar(function*(stream, b) {
+            if (dart.test(b)) {
+              if (stream.add(0)) return;
+              yield;
+            } else {
+              if (stream.add(1)) return;
+              yield;
+            }
+          }, dart.dynamic, b);
+        }
+        dart.fn(f, dynamicTodynamic());
+        return dart.dsend(async_star_test_04_multi.expectList(f(true), JSArrayOfint().of([0])), 'whenComplete', dart.fn(() => {
+          async_star_test_04_multi.expectList(f(false), JSArrayOfint().of([1]));
+        }, VoidTodynamic()));
+      }, VoidTodynamic()));
+      unittest$.test("block", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            if (stream.add(0)) return;
+            yield;
+            {
+              if (stream.add(1)) return;
+              yield;
+            }
+            if (stream.add(2)) return;
+            yield;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([0, 1, 2]));
+      }, VoidTodynamic()));
+      unittest$.test("labeled", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            label1: {
+              if (stream.add(0)) return;
+              yield;
+            }
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([0]));
+      }, VoidTodynamic()));
+      unittest$.test("for-loop", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            for (let i = 0; i < 3; i++) {
+              if (stream.add(i)) return;
+              yield;
+            }
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([0, 1, 2]));
+      }, VoidTodynamic()));
+      unittest$.test("for-in-loop", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            for (let i of JSArrayOfint().of([0, 1, 2])) {
+              if (stream.add(i)) return;
+              yield;
+            }
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([0, 1, 2]));
+      }, VoidTodynamic()));
+      unittest$.test("await for-in-loop", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            let it = async.StreamIterator.new(async.Stream.fromIterable(JSArrayOfint().of([0, 1, 2])));
+            try {
+              while (yield it.moveNext()) {
+                let i = it.current;
+                if (stream.add(i)) return;
+                yield;
+              }
+            } finally {
+              yield it.cancel();
+            }
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([0, 1, 2]));
+      }, VoidTodynamic()));
+      unittest$.test("while-loop", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            let i = 0;
+            while (i < 3) {
+              if (stream.add(i++)) return;
+              yield;
+            }
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([0, 1, 2]));
+      }, VoidTodynamic()));
+      unittest$.test("do-while-loop", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            let i = 0;
+            do {
+              if (stream.add(i++)) return;
+              yield;
+            } while (i < 3);
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([0, 1, 2]));
+      }, VoidTodynamic()));
+      unittest$.test("try-catch-finally", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            try {
+              if (stream.add(0)) return;
+              yield;
+            } catch (e) {
+              if (stream.add(1)) return;
+              yield;
+            }
+ finally {
+              if (stream.add(2)) return;
+              yield;
+            }
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([0, 2]));
+      }, VoidTodynamic()));
+      unittest$.test("try-catch-finally 2", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            try {
+              if (stream.add(dart.throw(0))) return;
+              yield;
+            } catch (e) {
+              if (stream.add(1)) return;
+              yield;
+            }
+ finally {
+              if (stream.add(2)) return;
+              yield;
+            }
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([1, 2]));
+      }, VoidTodynamic()));
+      unittest$.test("dead-code return", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            return;
+            if (stream.add(1)) return;
+            yield;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), []);
+      }, VoidTodynamic()));
+      unittest$.test("dead-code throw", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            try {
+              dart.throw(0);
+              if (stream.add(1)) return;
+              yield;
+            } catch (_) {
+            }
+
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), []);
+      }, VoidTodynamic()));
+      unittest$.test("dead-code break", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            while (true) {
+              break;
+              if (stream.add(1)) return;
+              yield;
+            }
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), []);
+      }, VoidTodynamic()));
+      unittest$.test("dead-code break 2", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            label: {
+              break label;
+              if (stream.add(1)) return;
+              yield;
+            }
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), []);
+      }, VoidTodynamic()));
+      unittest$.test("dead-code continue", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            do {
+              continue;
+              if (stream.add(1)) return;
+              yield;
+            } while (false);
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), []);
+      }, VoidTodynamic()));
+    }, VoidTovoid()));
+    unittest$.group("yield expressions", dart.fn(() => {
+      unittest$.test("local variable", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            let x = 42;
+            if (stream.add(x)) return;
+            yield;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([42]));
+      }, VoidTodynamic()));
+      unittest$.test("constant variable", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            let x = 42;
+            if (stream.add(x)) return;
+            yield;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([42]));
+      }, VoidTodynamic()));
+      unittest$.test("function call", dart.fn(() => {
+        function g() {
+          return 42;
+        }
+        dart.fn(g, VoidTodynamic());
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            if (stream.add(g())) return;
+            yield;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([42]));
+      }, VoidTodynamic()));
+      unittest$.test("unary operator", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            let x = -42;
+            if (stream.add(-x)) return;
+            yield;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([42]));
+      }, VoidTodynamic()));
+      unittest$.test("binary operator", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            let x = 21;
+            if (stream.add(x + x)) return;
+            yield;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([42]));
+      }, VoidTodynamic()));
+      unittest$.test("ternary operator", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            let x = 21;
+            if (stream.add(x == 21 ? x + x : x)) return;
+            yield;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([42]));
+      }, VoidTodynamic()));
+      unittest$.test("suffix post-increment", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            let x = 42;
+            if (stream.add(x++)) return;
+            yield;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([42]));
+      }, VoidTodynamic()));
+      unittest$.test("suffix pre-increment", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            let x = 41;
+            if (stream.add(++x)) return;
+            yield;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([42]));
+      }, VoidTodynamic()));
+      unittest$.test("assignment", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            let x = 37;
+            if (stream.add(x = 42)) return;
+            yield;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([42]));
+      }, VoidTodynamic()));
+      unittest$.test("assignment op", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            let x = 41;
+            if (stream.add((x = x + 1))) return;
+            yield;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([42]));
+      }, VoidTodynamic()));
+      unittest$.test("await", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            if (stream.add(yield async.Future.value(42))) return;
+            yield;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([42]));
+      }, VoidTodynamic()));
+      unittest$.test("index operator", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            let x = JSArrayOfint().of([42]);
+            if (stream.add(x[dartx.get](0))) return;
+            yield;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([42]));
+      }, VoidTodynamic()));
+      unittest$.test("function expression block", dart.fn(() => {
+        let o = new core.Object();
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            if (stream.add(dart.fn(() => o, VoidToObject()))) return;
+            yield;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return dart.dsend(dart.dload(f(), 'first'), 'then', dart.fn(v => {
+          src__matcher__expect.expect(dart.dcall(v), src__matcher__core_matchers.same(o));
+        }, dynamicTodynamic()));
+      }, VoidTodynamic()));
+      unittest$.test("function expression arrow", dart.fn(() => {
+        let o = new core.Object();
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            if (stream.add(dart.fn(() => o, VoidToObject()))) return;
+            yield;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return dart.dsend(dart.dload(f(), 'first'), 'then', dart.fn(v => {
+          src__matcher__expect.expect(dart.dcall(v), src__matcher__core_matchers.same(o));
+        }, dynamicTodynamic()));
+      }, VoidTodynamic()));
+      unittest$.test("function expression block async", dart.fn(() => {
+        let o = new core.Object();
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            if (stream.add(dart.fn(() => dart.async(function*() {
+              return o;
+            }, core.Object), VoidToFutureOfObject()))) return;
+            yield;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return dart.dsend(dart.dsend(dart.dload(f(), 'first'), 'then', dart.fn(v => dart.dcall(v), dynamicTodynamic())), 'then', dart.fn(v => {
+          src__matcher__expect.expect(v, src__matcher__core_matchers.same(o));
+        }, dynamicTodynamic()));
+      }, VoidTodynamic()));
+      unittest$.test("function expression arrow async", dart.fn(() => {
+        let o = new core.Object();
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            if (stream.add(dart.fn(() => dart.async(function*() {
+              return o;
+            }, core.Object), VoidToFutureOfObject()))) return;
+            yield;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return dart.dsend(dart.dsend(dart.dload(f(), 'first'), 'then', dart.fn(v => dart.dcall(v), dynamicTodynamic())), 'then', dart.fn(v => {
+          src__matcher__expect.expect(v, src__matcher__core_matchers.same(o));
+        }, dynamicTodynamic()));
+      }, VoidTodynamic()));
+      unittest$.test("function expression block async*", dart.fn(() => {
+        let o = new core.Object();
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            if (stream.add(dart.fn(() => dart.asyncStar(function*(stream) {
+              if (stream.add(o)) return;
+              yield;
+            }, core.Object), VoidToStreamOfObject()))) return;
+            yield;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return dart.dsend(dart.dsend(dart.dload(f(), 'first'), 'then', dart.fn(v => dart.dload(dart.dcall(v), 'first'), dynamicTodynamic())), 'then', dart.fn(v => {
+          src__matcher__expect.expect(v, src__matcher__core_matchers.same(o));
+        }, dynamicTodynamic()));
+      }, VoidTodynamic()));
+    }, VoidTovoid()));
+    unittest$.group("loops", dart.fn(() => {
+      unittest$.test("simple yield", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            for (let i = 0; i < 3; i++) {
+              if (stream.add(i)) return;
+              yield;
+            }
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([0, 1, 2]));
+      }, VoidTodynamic()));
+      unittest$.test("yield in double loop", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            for (let i = 0; i < 3; i++) {
+              for (let j = 0; j < 2; j++) {
+                if (stream.add(i * 2 + j)) return;
+                yield;
+              }
+            }
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(f(), JSArrayOfint().of([0, 1, 2, 3, 4, 5]));
+      }, VoidTodynamic()));
+      unittest$.test("yield in try body", dart.fn(() => {
+        let list = [];
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            for (let i = 0; i < 3; i++) {
+              try {
+                if (stream.add(i)) return;
+                yield;
+              } finally {
+                list[dartx.add](dart.str`${i}`);
+              }
+            }
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return dart.dsend(async_star_test_04_multi.expectList(f(), JSArrayOfint().of([0, 1, 2])), 'whenComplete', dart.fn(() => {
+          src__matcher__expect.expect(list, src__matcher__core_matchers.equals(JSArrayOfString().of(["0", "1", "2"])));
+        }, VoidTodynamic()));
+      }, VoidTodynamic()));
+      unittest$.test("yield in catch", dart.fn(() => {
+        let list = [];
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            for (let i = 0; i < 3; i++) {
+              try {
+                dart.throw(i);
+              } catch (e) {
+                if (stream.add(e)) return;
+                yield;
+              }
+ finally {
+                list[dartx.add](dart.str`${i}`);
+              }
+            }
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return dart.dsend(async_star_test_04_multi.expectList(f(), JSArrayOfint().of([0, 1, 2])), 'whenComplete', dart.fn(() => {
+          src__matcher__expect.expect(list, src__matcher__core_matchers.equals(JSArrayOfString().of(["0", "1", "2"])));
+        }, VoidTodynamic()));
+      }, VoidTodynamic()));
+      unittest$.test("yield in finally", dart.fn(() => {
+        let list = [];
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            for (let i = 0; i < 3; i++) {
+              try {
+                dart.throw(i);
+              } finally {
+                if (stream.add(i)) return;
+                yield;
+                list[dartx.add](dart.str`${i}`);
+                continue;
+              }
+            }
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return dart.dsend(async_star_test_04_multi.expectList(f(), JSArrayOfint().of([0, 1, 2])), 'whenComplete', dart.fn(() => {
+          src__matcher__expect.expect(list, src__matcher__core_matchers.equals(JSArrayOfString().of(["0", "1", "2"])));
+        }, VoidTodynamic()));
+      }, VoidTodynamic()));
+      unittest$.test("keep yielding after cancel", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            for (let i = 0; i < 10; i++) {
+              try {
+                if (stream.add(i)) return;
+                yield;
+              } finally {
+                continue;
+              }
+            }
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return async_star_test_04_multi.expectList(dart.dsend(f(), 'take', 3), JSArrayOfint().of([0, 1, 2]));
+      }, VoidTodynamic()));
+    }, VoidTovoid()));
+    unittest$.group("canceling", dart.fn(() => {
+      unittest$.test("cancels at yield", dart.fn(() => {
+        let exits = async.Completer.new();
+        let list = [];
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            try {
+              list[dartx.add](0);
+              if (stream.add(list[dartx.add](1))) return;
+              yield;
+              list[dartx.add](2);
+            } finally {
+              exits.complete(3);
+            }
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        let subscription = dart.dsend(f(), 'listen', dart.fn(v => {
+          src__matcher__expect.fail(dart.str`Received event ${v}`);
+        }, dynamicTodynamic()), {onDone: dart.fn(() => {
+            src__matcher__expect.fail("Received done");
+          }, VoidTodynamic())});
+        dart.dsend(subscription, 'cancel');
+        return exits.future.then(dart.dynamic)(dart.fn(v => {
+          src__matcher__expect.expect(v, src__matcher__core_matchers.equals(3));
+          src__matcher__expect.expect(list, src__matcher__core_matchers.equals(JSArrayOfint().of([0, 1])));
+        }, dynamicTodynamic()));
+      }, VoidToFuture()));
+      unittest$.test("does cancel eventually", dart.fn(() => {
+        let exits = async.Completer.new();
+        let list = [];
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            let i = 0;
+            try {
+              while (true) {
+                if (stream.add(i++)) return;
+                yield;
+              }
+            } finally {
+              list[dartx.add]("a");
+              exits.complete(i);
+            }
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return dart.dsend(dart.dsend(async_star_test_04_multi.expectList(dart.dsend(f(), 'take', 5), JSArrayOfint().of([0, 1, 2, 3, 4])), 'then', dart.fn(_ => exits.future, dynamicToFuture())), 'then', dart.fn(v => {
+          src__matcher__expect.expect(v, src__matcher__numeric_matchers.greaterThan(4));
+          src__matcher__expect.expect(list, JSArrayOfString().of(["a"]));
+        }, dynamicTodynamic()));
+      }, VoidTodynamic()));
+      unittest$.group("at index", dart.fn(() => {
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            try {
+              if (stream.add(yield async.Future.microtask(dart.fn(() => 1, VoidToint())))) return;
+              yield;
+            } finally {
+              try {
+                if (stream.add(yield async.Future.microtask(dart.fn(() => 2, VoidToint())))) return;
+                yield;
+              } finally {
+                if (stream.add(yield async.Future.microtask(dart.fn(() => 3, VoidToint())))) return;
+                yield;
+              }
+            }
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        unittest$.test("- all, sanity check", dart.fn(() => async_star_test_04_multi.expectList(f(), JSArrayOfint().of([1, 2, 3])), VoidTodynamic()));
+        unittest$.test("after end", dart.fn(() => async_star_test_04_multi.expectList(dart.dsend(f(), 'take', 4), JSArrayOfint().of([1, 2, 3])), VoidTodynamic()));
+        unittest$.test("at end", dart.fn(() => async_star_test_04_multi.expectList(dart.dsend(f(), 'take', 3), JSArrayOfint().of([1, 2, 3])), VoidTodynamic()));
+        unittest$.test("before end", dart.fn(() => async_star_test_04_multi.expectList(dart.dsend(f(), 'take', 2), JSArrayOfint().of([1, 2])), VoidTodynamic()));
+        unittest$.test("early", dart.fn(() => async_star_test_04_multi.expectList(dart.dsend(f(), 'take', 1), JSArrayOfint().of([1])), VoidTodynamic()));
+        unittest$.test("at start", dart.fn(() => async_star_test_04_multi.expectList(dart.dsend(f(), 'take', 0), []), VoidTodynamic()));
+      }, VoidTovoid()));
+    }, VoidTovoid()));
+    unittest$.group("pausing", dart.fn(() => {
+      unittest$.test("pauses execution at yield for at least a microtask", dart.fn(() => {
+        let list = [];
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            list[dartx.add](1);
+            if (stream.add(2)) return;
+            yield;
+            list[dartx.add](3);
+            if (stream.add(4)) return;
+            yield;
+            list[dartx.add](5);
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        let done = async.Completer.new();
+        let sub = dart.dsend(f(), 'listen', dart.fn(v => {
+          if (dart.equals(v, 2)) {
+            src__matcher__expect.expect(list, src__matcher__core_matchers.equals(JSArrayOfint().of([1])));
+          } else if (dart.equals(v, 4)) {
+            src__matcher__expect.expect(list, src__matcher__core_matchers.equals(JSArrayOfint().of([1, 3])));
+          } else {
+            src__matcher__expect.fail(dart.str`Unexpected value ${v}`);
+          }
+        }, dynamicTodynamic()), {onDone: dart.fn(() => {
+            src__matcher__expect.expect(list, src__matcher__core_matchers.equals(JSArrayOfint().of([1, 3, 5])));
+            done.complete();
+          }, VoidTodynamic())});
+        return done.future;
+      }, VoidToFuture()));
+      unittest$.test("pause stops execution at yield", dart.fn(() => {
+        let list = [];
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            list[dartx.add](1);
+            if (stream.add(2)) return;
+            yield;
+            list[dartx.add](3);
+            if (stream.add(4)) return;
+            yield;
+            list[dartx.add](5);
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        let done = async.Completer.new();
+        let sub = null;
+        sub = dart.dsend(f(), 'listen', dart.fn(v => {
+          if (dart.equals(v, 2)) {
+            src__matcher__expect.expect(list, src__matcher__core_matchers.equals(JSArrayOfint().of([1])));
+            dart.dsend(sub, 'pause');
+            async.Timer.new(async_star_test_04_multi.MS['*'](300), dart.fn(() => {
+              src__matcher__expect.expect(list[dartx.length], src__matcher__numeric_matchers.lessThan(3));
+              dart.dsend(sub, 'resume');
+            }, VoidTovoid()));
+          } else if (dart.equals(v, 4)) {
+            src__matcher__expect.expect(list, src__matcher__core_matchers.equals(JSArrayOfint().of([1, 3])));
+          } else {
+            src__matcher__expect.fail(dart.str`Unexpected value ${v}`);
+          }
+        }, dynamicTodynamic()), {onDone: dart.fn(() => {
+            src__matcher__expect.expect(list, src__matcher__core_matchers.equals(JSArrayOfint().of([1, 3, 5])));
+            done.complete();
+          }, VoidTodynamic())});
+        return done.future;
+      }, VoidToFuture()));
+      unittest$.test("pause stops execution at yield 2", dart.fn(() => {
+        let list = [];
+        function f() {
+          return dart.asyncStar(function*(stream) {
+            let i = 0;
+            while (true) {
+              if (stream.add(i)) return;
+              yield;
+              list[dartx.add](i);
+              i++;
+            }
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        let expected = 0;
+        let done = async.Completer.new();
+        let sub = null;
+        sub = dart.dsend(f(), 'listen', dart.fn(v => {
+          src__matcher__expect.expect(v, src__matcher__core_matchers.equals(expected++));
+          if (dart.equals(dart.dsend(v, '%', 5), 0)) {
+            dart.dsend(sub, 'pause', async.Future.delayed(async_star_test_04_multi.MS['*'](300)));
+          } else if (dart.equals(v, 17)) {
+            dart.dsend(sub, 'cancel');
+            done.complete();
+          }
+        }, dynamicTodynamic()), {onDone: dart.fn(() => {
+            src__matcher__expect.fail("Unexpected done!");
+          }, VoidTodynamic())});
+        return done.future.whenComplete(dart.fn(() => {
+          src__matcher__expect.expect(list[dartx.length] == 18 || list[dartx.length] == 19, src__matcher__core_matchers.isTrue);
+        }, VoidTodynamic()));
+      }, VoidToFuture()));
+    }, VoidTovoid()));
+    unittest$.group("await for", dart.fn(() => {
+      function mkStream(n) {
+        return dart.asyncStar(function*(stream, n) {
+          for (let i = 0; i < dart.notNull(n); i++) {
+            if (stream.add(i)) return;
+            yield;
+          }
+        }, dart.dynamic, n);
+      }
+      dart.fn(mkStream, intTodynamic());
+      unittest$.test("simple stream", dart.fn(() => {
+        function f(s) {
+          return dart.async(function*(s) {
+            let r = 0;
+            let it = async.StreamIterator.new(async.Stream._check(s));
+            try {
+              while (yield it.moveNext()) {
+                let v = it.current;
+                r = dart.notNull(r) + dart.notNull(core.int._check(v));
+              }
+            } finally {
+              yield it.cancel();
+            }
+            return r;
+          }, dart.dynamic, s);
+        }
+        dart.fn(f, dynamicTodynamic());
+        return dart.dsend(f(mkStream(5)), 'then', dart.fn(v => {
+          src__matcher__expect.expect(v, src__matcher__core_matchers.equals(10));
+        }, dynamicTodynamic()));
+      }, VoidTodynamic()));
+      unittest$.test("simple stream, await", dart.fn(() => {
+        function f(s) {
+          return dart.async(function*(s) {
+            let r = 0;
+            let it = async.StreamIterator.new(async.Stream._check(s));
+            try {
+              while (yield it.moveNext()) {
+                let v = it.current;
+                r = dart.notNull(r) + dart.notNull(core.int._check(yield async.Future.microtask(dart.fn(() => v, VoidTodynamic()))));
+              }
+            } finally {
+              yield it.cancel();
+            }
+            return r;
+          }, dart.dynamic, s);
+        }
+        dart.fn(f, dynamicTodynamic());
+        return dart.dsend(f(mkStream(5)), 'then', dart.fn(v => {
+          src__matcher__expect.expect(v, src__matcher__core_matchers.equals(10));
+        }, dynamicTodynamic()));
+      }, VoidTodynamic()));
+      unittest$.test("simple stream reyield", dart.fn(() => {
+        function f(s) {
+          return dart.asyncStar(function*(stream, s) {
+            let r = 0;
+            let it = async.StreamIterator.new(async.Stream._check(s));
+            try {
+              while (yield it.moveNext()) {
+                let v = it.current;
+                if (stream.add((r = dart.notNull(r) + dart.notNull(core.int._check(v))))) return;
+                yield;
+              }
+            } finally {
+              yield it.cancel();
+            }
+          }, dart.dynamic, s);
+        }
+        dart.fn(f, dynamicTodynamic());
+        return async_star_test_04_multi.expectList(f(mkStream(5)), JSArrayOfint().of([0, 1, 3, 6, 10]));
+      }, VoidTodynamic()));
+      unittest$.test("simple stream, await, reyield", dart.fn(() => {
+        function f(s) {
+          return dart.asyncStar(function*(stream, s) {
+            let r = 0;
+            let it = async.StreamIterator.new(async.Stream._check(s));
+            try {
+              while (yield it.moveNext()) {
+                let v = it.current;
+                if (stream.add((r = dart.notNull(r) + dart.notNull(core.int._check(yield async.Future.microtask(dart.fn(() => v, VoidTodynamic()))))))) return;
+                yield;
+              }
+            } finally {
+              yield it.cancel();
+            }
+          }, dart.dynamic, s);
+        }
+        dart.fn(f, dynamicTodynamic());
+        return async_star_test_04_multi.expectList(f(mkStream(5)), JSArrayOfint().of([0, 1, 3, 6, 10]));
+      }, VoidTodynamic()));
+      unittest$.test("simple stream - take, reyield", dart.fn(() => {
+        function f(s) {
+          return dart.asyncStar(function*(stream, s) {
+            let r = 0;
+            let it = async.StreamIterator.new(async.Stream._check(dart.dsend(s, 'take', 5)));
+            try {
+              while (yield it.moveNext()) {
+                let v = it.current;
+                if (stream.add((r = dart.notNull(r) + dart.notNull(core.int._check(v))))) return;
+                yield;
+              }
+            } finally {
+              yield it.cancel();
+            }
+          }, dart.dynamic, s);
+        }
+        dart.fn(f, dynamicTodynamic());
+        return async_star_test_04_multi.expectList(f(mkStream(10)), JSArrayOfint().of([0, 1, 3, 6, 10]));
+      }, VoidTodynamic()));
+      unittest$.test("nested", dart.fn(() => {
+        function f() {
+          return dart.async(function*() {
+            let r = 0;
+            let it = async.StreamIterator.new(async.Stream._check(mkStream(5)));
+            try {
+              while (yield it.moveNext()) {
+                let i = it.current;
+                let it$ = async.StreamIterator.new(async.Stream._check(mkStream(3)));
+                try {
+                  while (yield it$.moveNext()) {
+                    let j = it$.current;
+                    r = dart.notNull(r) + dart.notNull(core.int._check(dart.dsend(i, '*', j)));
+                  }
+                } finally {
+                  yield it$.cancel();
+                }
+              }
+            } finally {
+              yield it.cancel();
+            }
+            return r;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return dart.dsend(f(), 'then', dart.fn(v => {
+          src__matcher__expect.expect(v, src__matcher__core_matchers.equals((1 + 2 + 3 + 4) * (1 + 2)));
+        }, dynamicTodynamic()));
+      }, VoidTodynamic()));
+      unittest$.test("nested, await", dart.fn(() => {
+        function f() {
+          return dart.async(function*() {
+            let r = 0;
+            let it = async.StreamIterator.new(async.Stream._check(mkStream(5)));
+            try {
+              while (yield it.moveNext()) {
+                let i = it.current;
+                let it$ = async.StreamIterator.new(async.Stream._check(mkStream(3)));
+                try {
+                  while (yield it$.moveNext()) {
+                    let j = it$.current;
+                    r = dart.notNull(r) + dart.notNull(core.int._check(yield async.Future.microtask(dart.fn(() => dart.dsend(i, '*', j), VoidTodynamic()))));
+                  }
+                } finally {
+                  yield it$.cancel();
+                }
+              }
+            } finally {
+              yield it.cancel();
+            }
+            return r;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return dart.dsend(f(), 'then', dart.fn(v => {
+          src__matcher__expect.expect(v, src__matcher__core_matchers.equals((1 + 2 + 3 + 4) * (1 + 2)));
+        }, dynamicTodynamic()));
+      }, VoidTodynamic()));
+      unittest$.test("nested, await * 2", dart.fn(() => {
+        function f() {
+          return dart.async(function*() {
+            let r = 0;
+            let it = async.StreamIterator.new(async.Stream._check(mkStream(5)));
+            try {
+              while (yield it.moveNext()) {
+                let i = it.current;
+                let ai = (yield async.Future.microtask(dart.fn(() => i, VoidTodynamic())));
+                let it$ = async.StreamIterator.new(async.Stream._check(mkStream(3)));
+                try {
+                  while (yield it$.moveNext()) {
+                    let j = it$.current;
+                    r = dart.notNull(r) + dart.notNull(core.int._check(yield async.Future.microtask(dart.fn(() => dart.dsend(ai, '*', j), VoidTodynamic()))));
+                  }
+                } finally {
+                  yield it$.cancel();
+                }
+              }
+            } finally {
+              yield it.cancel();
+            }
+            return r;
+          }, dart.dynamic);
+        }
+        dart.fn(f, VoidTodynamic());
+        return dart.dsend(f(), 'then', dart.fn(v => {
+          src__matcher__expect.expect(v, src__matcher__core_matchers.equals((1 + 2 + 3 + 4) * (1 + 2)));
+        }, dynamicTodynamic()));
+      }, VoidTodynamic()));
+    }, VoidTovoid()));
+  };
+  dart.fn(async_star_test_04_multi.main, VoidTodynamic());
+  async_star_test_04_multi.id = function(x) {
+    try {
+      if (x != null) dart.throw(x);
+    } catch (e) {
+      return e;
+    }
+
+    return null;
+  };
+  dart.fn(async_star_test_04_multi.id, dynamicTodynamic());
+  async_star_test_04_multi.expectList = function(stream, list) {
+    return dart.dsend(dart.dsend(stream, 'toList'), 'then', dart.fn(v => {
+      src__matcher__expect.expect(v, src__matcher__core_matchers.equals(list));
+    }, dynamicTodynamic()));
+  };
+  dart.fn(async_star_test_04_multi.expectList, dynamicAnddynamicTodynamic());
+  async_star_test_04_multi.MS = dart.const(new core.Duration({milliseconds: 1}));
+  dart.defineLazy(async_star_test_04_multi, {
+    get getErrors() {
+      return async.StreamTransformer.fromHandlers({handleData: dart.fn((data, sink) => {
+          src__matcher__expect.fail("Unexpected value");
+        }, dynamicAndEventSinkTovoid()), handleError: dart.fn((e, s, sink) => {
+          sink.add(e);
+        }, ObjectAndStackTraceAndEventSinkTovoid()), handleDone: dart.fn(sink => {
+          sink.close();
+        }, EventSinkTovoid())});
+    },
+    set getErrors(_) {}
+  });
+  async_star_test_04_multi.NotAStream = class NotAStream extends core.Object {
+    listen(oData, opts) {
+      let onError = opts && 'onError' in opts ? opts.onError : null;
+      let onDone = opts && 'onDone' in opts ? opts.onDone : null;
+      let cancelOnError = opts && 'cancelOnError' in opts ? opts.cancelOnError : null;
+      src__matcher__expect.fail("Not implementing Stream.");
+    }
+  };
+  dart.setSignature(async_star_test_04_multi.NotAStream, {
+    methods: () => ({listen: dart.definiteFunctionType(dart.dynamic, [dart.dynamic], {onError: dart.dynamic, onDone: dart.dynamic, cancelOnError: dart.dynamic})})
+  });
+  const _completer = Symbol('_completer');
+  async_star_test_04_multi.Sync = class Sync extends core.Object {
+    new() {
+      this[_completer] = null;
+    }
+    wait(v) {
+      if (v === void 0) v = null;
+      if (this[_completer] != null) this[_completer].complete(v);
+      this[_completer] = async.Completer.new();
+      return this[_completer].future;
+    }
+    release(v) {
+      if (v === void 0) v = null;
+      if (this[_completer] != null) {
+        this[_completer].complete(v);
+        this[_completer] = null;
+      }
+    }
+  };
+  dart.setSignature(async_star_test_04_multi.Sync, {
+    methods: () => ({
+      wait: dart.definiteFunctionType(async.Future, [], [dart.dynamic]),
+      release: dart.definiteFunctionType(dart.void, [], [dart.dynamic])
+    })
+  });
+  // Exports:
+  exports.async_star_test_04_multi = async_star_test_04_multi;
+});