Migrate async tests to strong

tests/lib_strong/async/futures_test.dart

+// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+library futures_test;
+import 'package:async_helper/async_helper.dart';
+import "package:expect/expect.dart";
+import 'dart:async';
+
+Future testWaitEmpty() {
+  List<Future> futures = new List<Future>();
+  return Future.wait(futures);
+}
+
+Future testCompleteAfterWait() {
+  List<Future> futures = new List<Future>();
+  Completer<Object> c = new Completer<Object>();
+  futures.add(c.future);
+  Future future = Future.wait(futures);
+  c.complete(null);
+  return future;
+}
+
+Future testCompleteBeforeWait() {
+  List<Future> futures = new List<Future>();
+  Completer c = new Completer();
+  futures.add(c.future);
+  c.complete(null);
+  return Future.wait(futures);
+}
+
+Future testWaitWithMultipleValues() {
+  List<Future> futures = new List<Future>();
+  Completer c1 = new Completer();
+  Completer c2 = new Completer();
+  futures.add(c1.future);
+  futures.add(c2.future);
+  c1.complete(1);
+  c2.complete(2);
+  return Future.wait(futures).then((values) {
+    Expect.listEquals([1, 2], values);
+  });
+}
+
+Future testWaitWithSingleError() {
+  List<Future> futures = new List<Future>();
+  Completer c1 = new Completer();
+  Completer c2 = new Completer();
+  futures.add(c1.future);
+  futures.add(c2.future);
+  c1.complete();
+  c2.completeError('correct error');
+
+  return Future.wait(futures).then((_) {
+    throw 'incorrect error';
+  }).catchError((error, stackTrace) {
+    Expect.equals('correct error', error);
+    Expect.isNull(stackTrace);
+  });
+}
+
+Future testWaitWithMultipleErrors() {
+  List<Future> futures = new List<Future>();
+  Completer c1 = new Completer();
+  Completer c2 = new Completer();
+  futures.add(c1.future);
+  futures.add(c2.future);
+  c1.completeError('correct error');
+  c2.completeError('incorrect error 1');
+
+  return Future.wait(futures).then((_) {
+    throw 'incorrect error 2';
+  }).catchError((error, stackTrace) {
+    Expect.equals('correct error', error);
+    Expect.isNull(stackTrace);
+  });
+}
+
+Future testWaitWithMultipleErrorsEager() {
+  List<Future> futures = new List<Future>();
+  Completer c1 = new Completer();
+  Completer c2 = new Completer();
+  futures.add(c1.future);
+  futures.add(c2.future);
+  c1.completeError('correct error');
+  c2.completeError('incorrect error 1');
+
+  return Future.wait(futures, eagerError: true).then((_) {
+    throw 'incorrect error 2';
+  }).catchError((error, stackTrace) {
+    Expect.equals('correct error', error);
+    Expect.isNull(stackTrace);
+  });
+}
+
+StackTrace get currentStackTrace {
+  try {
+    throw 0;
+  } catch(e, st) {
+    return st;
+  }
+  return null;
+}
+
+Future testWaitWithSingleErrorWithStackTrace() {
+  List<Future> futures = new List<Future>();
+  Completer c1 = new Completer();
+  Completer c2 = new Completer();
+  futures.add(c1.future);
+  futures.add(c2.future);
+  c1.complete();
+  c2.completeError('correct error', currentStackTrace);
+
+  return Future.wait(futures).then((_) {
+    throw 'incorrect error';
+  }).catchError((error, stackTrace) {
+    Expect.equals('correct error', error);
+    Expect.isNotNull(stackTrace);
+  });
+}
+
+Future testWaitWithMultipleErrorsWithStackTrace() {
+  List<Future> futures = new List<Future>();
+  Completer c1 = new Completer();
+  Completer c2 = new Completer();
+  futures.add(c1.future);
+  futures.add(c2.future);
+  c1.completeError('correct error', currentStackTrace);
+  c2.completeError('incorrect error 1');
+
+  return Future.wait(futures).then((_) {
+    throw 'incorrect error 2';
+  }).catchError((error, stackTrace) {
+    Expect.equals('correct error', error);
+    Expect.isNotNull(stackTrace);
+  });
+}
+
+Future testWaitWithMultipleErrorsWithStackTraceEager() {
+  List<Future> futures = new List<Future>();
+  Completer c1 = new Completer();
+  Completer c2 = new Completer();
+  futures.add(c1.future);
+  futures.add(c2.future);
+  c1.completeError('correct error', currentStackTrace);
+  c2.completeError('incorrect error 1');
+
+  return Future.wait(futures, eagerError: true).then((_) {
+    throw 'incorrect error 2';
+  }).catchError((error, stackTrace) {
+    Expect.equals('correct error', error);
+    Expect.isNotNull(stackTrace);
+  });
+}
+
+Future testEagerWait() {
+  var st;
+  try { throw 0; } catch (e, s) { st = s; }
+  Completer c1 = new Completer();
+  Completer c2 = new Completer();
+  List<Future> futures = <Future>[c1.future, c2.future];
+  Future waited = Future.wait(futures, eagerError: true);
+  var result = waited.then((v) { throw "should not be called"; },
+                           onError: (e, s) {
+                             Expect.equals(e, 42);
+                             Expect.identical(st, s);
+                             return true;
+                           });
+  c1.completeError(42, st);
+  return result;
+}
+
+Future testForEachEmpty() {
+  return Future.forEach([], (_) {
+    throw 'should not be called';
+  });
+}
+
+Future testForEach() {
+  var seen = <int>[];
+  return Future.forEach([1, 2, 3, 4, 5], (n) {
+    seen.add(n);
+    return new Future.value();
+  }).then((_) => Expect.listEquals([1, 2, 3, 4, 5], seen));
+}
+
+Future testForEachSync() {
+  var seen = <int>[];
+  return Future.forEach([1, 2, 3, 4, 5], seen.add)
+      .then((_) => Expect.listEquals([1, 2, 3, 4, 5], seen));
+}
+
+Future testForEachWithException() {
+  var seen = <int>[];
+  return Future.forEach([1, 2, 3, 4, 5], (n) {
+    if (n == 4) throw 'correct exception';
+    seen.add(n);
+    return new Future.value();
+  }).then((_) {
+    throw 'incorrect exception';
+  }).catchError((error) {
+    Expect.equals('correct exception', error);
+  });
+}
+
+Future testDoWhile() {
+  var count = 0;
+  return Future.doWhile(() {
+    count++;
+    return new Future(() => count < 10);
+  }).then((_) => Expect.equals(10, count));
+}
+
+Future testDoWhileSync() {
+  var count = 0;
+  return Future.doWhile(() {
+    count++;
+    return count < 10;
+  }).then((_) => Expect.equals(10, count));
+}
+
+Future testDoWhileWithException() {
+  var count = 0;
+  return Future.doWhile(() {
+    count++;
+    if (count == 4) throw 'correct exception';
+    return new Future(() => true);
+  }).then((_) {
+    throw 'incorrect exception';
+  }).catchError((error) {
+    Expect.equals('correct exception', error);
+  });
+}
+
+main() {
+  List<Future> futures = new List<Future>();
+
+  futures.add(testWaitEmpty());
+  futures.add(testCompleteAfterWait());
+  futures.add(testCompleteBeforeWait());
+  futures.add(testWaitWithMultipleValues());
+  futures.add(testWaitWithSingleError());
+  futures.add(testWaitWithMultipleErrors());
+  futures.add(testWaitWithMultipleErrorsEager());
+  futures.add(testWaitWithSingleErrorWithStackTrace());
+  futures.add(testWaitWithMultipleErrorsWithStackTrace());
+  futures.add(testWaitWithMultipleErrorsWithStackTraceEager());
+  futures.add(testEagerWait());
+  futures.add(testForEachEmpty());
+  futures.add(testForEach());
+  futures.add(testForEachSync());
+  futures.add(testForEachWithException());
+  futures.add(testDoWhile());
+  futures.add(testDoWhileSync());
+  futures.add(testDoWhileWithException());
+
+  asyncStart();
+  Future.wait(futures).then((List list) {
+    Expect.equals(18, list.length);
+    asyncEnd();
+  });
+}