Move async_minitest to package:async_helper.

This allows to break a circular dependency between package:expect and

package:async_helper, which will simplify the support for modular tests using
package:modular_test.
Change-Id: Ie48723d3f35d51a8fbe622e0158450e8104fe3f5
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/102140
Reviewed-by: Johnni Winther <johnniwinther@google.com>

pkg/async_helper/pubspec.yaml

@@ -7,3 +7,6 @@ description: >-
  language tests.
  Third parties are discouraged from using this, and should use
  the facilities provided in package:test.
+
+dependencies:
+  expect: any

pkg/modular_test/test/loader/default_package_dependency_error/expectation.txt

@@ -3,7 +3,6 @@
 expect
   is package? yes
   dependencies: meta
-  async_minitest.dart
   expect.dart
   matchers_lite.dart
   minitest.dart

pkg/modular_test/test/loader/valid_packages/expectation.txt

@@ -3,7 +3,6 @@
 expect
   is package? yes
   dependencies: meta
-  async_minitest.dart
   expect.dart
   matchers_lite.dart
   minitest.dart

tests/language_2/async_star_error_test.dart

@@ -3,7 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 import "dart:async";
-import "package:expect/async_minitest.dart";
+import "package:async_helper/async_minitest.dart";
 
 /// Tests for exceptions raised in async*
 main() {

tests/language_2/async_star_test.dart

@@ -6,7 +6,7 @@ library async_start_test;
 
 import "dart:async";
 
-import "package:expect/async_minitest.dart";
+import "package:async_helper/async_minitest.dart";
 
 main() {
   group("basic", () {

tests/language_2/vm/causal_async_exception_stack2_test.dart

@@ -2,7 +2,7 @@
 // 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.
 
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 import 'causal_async_exception_stack_helper.dart' as h;
 

tests/language_2/vm/causal_async_exception_stack_test.dart

@@ -2,7 +2,7 @@
 // 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.
 
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 import 'causal_async_exception_stack_helper.dart' as h;
 

tests/lib_2/async/stream_controller_async_test.dart

@@ -8,7 +8,7 @@ library stream_controller_async_test;
 import 'dart:async';
 
 import 'package:expect/expect.dart';
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 import 'event_helper.dart';
 import 'stream_state_helper.dart';

tests/lib_2/async/stream_from_iterable_test.dart

@@ -8,7 +8,7 @@ import 'dart:async';
 
 import 'package:async_helper/async_helper.dart';
 import 'package:expect/expect.dart';
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 import 'event_helper.dart';
 

tests/lib_2/async/stream_iterator_test.dart

@@ -4,7 +4,7 @@
 
 import 'dart:async';
 
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 main() {
   test("stream iterator basic", () async {

tests/lib_2/async/stream_join_test.dart

@@ -8,7 +8,7 @@ library stream_join_test;
 import 'dart:async';
 
 import 'package:expect/expect.dart';
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 import 'event_helper.dart';
 

tests/lib_2/async/stream_periodic2_test.dart

@@ -7,7 +7,7 @@ library dart.test.stream_from_iterable;
 
 import 'dart:async';
 
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 main() {
   test("stream-periodic2", () {

tests/lib_2/async/stream_periodic3_test.dart

@@ -7,7 +7,7 @@ library dart.test.stream_from_iterable;
 
 import 'dart:async';
 
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 // The stopwatch is more precise than the Timer.
 // Some browsers (Firefox and IE so far) can trigger too early. So we add more

tests/lib_2/async/stream_periodic4_test.dart

@@ -7,7 +7,7 @@ library dart.test.stream_from_iterable;
 
 import 'dart:async';
 
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 void runTest(period, maxElapsed, pauseDuration) {
   Function done = expectAsync(() {});

tests/lib_2/async/stream_periodic5_test.dart

@@ -7,7 +7,7 @@ library dart.test.stream_from_iterable;
 
 import 'dart:async';
 
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 watchMs(Stopwatch watch) {
   int microsecs = watch.elapsedMicroseconds;

tests/lib_2/async/stream_periodic6_test.dart

@@ -7,7 +7,7 @@ library dart.test.stream_from_iterable;
 
 import 'dart:async';
 
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 main() {
   test("stream-periodic1", () {

tests/lib_2/async/stream_periodic_test.dart

@@ -7,7 +7,7 @@ library dart.test.stream_from_iterable;
 
 import 'dart:async';
 
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 main() {
   test("stream-periodic1", () {

tests/lib_2/async/stream_single_test.dart

@@ -8,7 +8,7 @@ library stream_single_test;
 import 'dart:async';
 
 import 'package:expect/expect.dart';
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 import 'event_helper.dart';
 

tests/lib_2/async/stream_single_to_multi_subscriber_test.dart

@@ -8,7 +8,7 @@ library stream_single_test;
 import 'dart:async';
 
 import 'package:expect/expect.dart';
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 import 'event_helper.dart';
 

tests/lib_2/async/stream_state_helper.dart

@@ -7,7 +7,7 @@ library stream_state_helper;
 import 'dart:async';
 import 'dart:collection';
 
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 class SubscriptionProtocolTest {
   final StreamProtocolTest _streamTest;

tests/lib_2/async/stream_state_nonzero_timer_test.dart

@@ -9,7 +9,7 @@ library stream_state_nonzero_timer_test;
 
 import 'dart:async';
 
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 import 'stream_state_helper.dart';
 

tests/lib_2/async/stream_state_test.dart

@@ -5,7 +5,7 @@
 // Test the event/callback protocol of the stream implementations.
 library stream_state_test;
 
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 import 'stream_state_helper.dart';
 

tests/lib_2/async/stream_subscription_as_future_test.dart

@@ -8,7 +8,7 @@ library stream_single_test;
 import 'dart:async';
 
 import 'package:expect/expect.dart';
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 main() {
   test("subscription.asFuture success", () {

tests/lib_2/async/stream_subscription_cancel_test.dart

@@ -7,7 +7,7 @@ library stream_subscription_cancel;
 
 import 'dart:async';
 
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 void main() {
   test('subscription.cancel', () {

tests/lib_2/async/stream_timeout_test.dart

@@ -4,7 +4,7 @@
 
 import 'dart:async';
 
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 main() {
   const ms5 = const Duration(milliseconds: 5);

tests/lib_2/async/stream_transform_test.dart

@@ -7,7 +7,7 @@ library stream_transform_test;
 import 'dart:async';
 
 import 'package:expect/expect.dart';
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 import 'event_helper.dart';
 

tests/lib_2/async/stream_transformation_broadcast_test.dart

@@ -8,7 +8,7 @@ library stream_join_test;
 import 'dart:async';
 
 import 'package:expect/expect.dart';
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 import 'event_helper.dart';
 

tests/lib_2/async/timer_cancel1_test.dart

@@ -6,7 +6,7 @@ library timer_cancel1_test;
 
 import 'dart:async';
 
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 main() {
   // Test that a timeout handler can cancel another.

tests/lib_2/async/timer_isActive_test.dart

@@ -4,7 +4,7 @@
 
 import 'dart:async';
 
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 main() {
   test("timer isActive test", () {

tests/lib_2/async/timer_test.dart

@@ -6,7 +6,7 @@ library timer_test;
 
 import 'dart:async';
 
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 const int STARTTIMEOUT = 1050;
 const int DECREASE = 200;

tests/lib_2/html/websql_test.dart

@@ -4,7 +4,7 @@ import 'dart:async';
 import 'dart:html';
 import 'dart:web_sql';
 
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 Future<SqlResultSet> createTable(
     SqlTransaction transaction, String tableName, String columnName) async {

tests/lib_2/isolate/deferred_in_isolate2_test.dart

@@ -6,7 +6,7 @@ library deferred_in_isolate2_test;
 
 import 'dart:isolate';
 import 'dart:async';
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 import 'deferred_in_isolate2_lib.dart' deferred as lib;
 

tests/lib_2/isolate/spawn_uri_multi_test.dart

@@ -9,7 +9,7 @@
 library spawn_tests;
 
 import 'dart:isolate';
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 /* Dummy import so multi-test copies the file.
 import 'spawn_uri_child_isolate.dart';

tests/lib_2/isolate/spawn_uri_nested_vm_test.dart

@@ -9,7 +9,7 @@
 library NestedSpawnUriLibrary;
 
 import 'dart:isolate';
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 main() {
   test('isolate fromUri - nested send and reply', () {

tests/lib_2/isolate/spawn_uri_test.dart

@@ -9,7 +9,7 @@
 library spawn_tests;
 
 import 'dart:isolate';
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 main() {
   test('isolate fromUri - send and reply', () async {

tests/lib_2/isolate/spawn_uri_vm_test.dart

@@ -9,7 +9,7 @@
 library spawn_tests;
 
 import 'dart:isolate';
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 main() {
   test('isolate fromUri - send and reply', () {

tests/lib_2/isolate/timer_isolate_test.dart

@@ -6,7 +6,7 @@ library multiple_timer_test;
 
 import 'dart:isolate';
 import 'dart:async';
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 const Duration TIMEOUT = const Duration(milliseconds: 100);
 

tests/lib_2/mirrors/library_uri_io_test.dart

@@ -9,7 +9,7 @@ library MirrorsTest;
 import 'dart:io';
 import 'dart:mirrors';
 
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 class Class {}
 

tests/lib_2/mirrors/library_uri_package_test.dart

@@ -8,7 +8,7 @@ library MirrorsTest;
 
 import 'dart:mirrors';
 import 'package:args/args.dart';
-import 'package:expect/async_minitest.dart';
+import 'package:async_helper/async_minitest.dart';
 
 testLibraryUri(var value, Uri expectedUri) {
   var valueMirror = reflect(value);