diff --git a/pkg/expect/lib/async_minitest.dart b/pkg/async_helper/lib/async_minitest.dart
similarity index 100%
rename from pkg/expect/lib/async_minitest.dart
rename to pkg/async_helper/lib/async_minitest.dart
diff --git a/pkg/async_helper/pubspec.yaml b/pkg/async_helper/pubspec.yaml
index ceb26344594..df92b533c57 100644
--- a/pkg/async_helper/pubspec.yaml
+++ b/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
diff --git a/pkg/modular_test/test/loader/default_package_dependency_error/expectation.txt b/pkg/modular_test/test/loader/default_package_dependency_error/expectation.txt
index 43c7dac5251..891da787288 100644
--- a/pkg/modular_test/test/loader/default_package_dependency_error/expectation.txt
+++ b/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
diff --git a/pkg/modular_test/test/loader/valid_packages/expectation.txt b/pkg/modular_test/test/loader/valid_packages/expectation.txt
index a81d4ecb275..e549eaa1da4 100644
--- a/pkg/modular_test/test/loader/valid_packages/expectation.txt
+++ b/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
diff --git a/tests/language_2/async_star_error_test.dart b/tests/language_2/async_star_error_test.dart
index 4bf2433180a..dc06e5ae4c1 100644
--- a/tests/language_2/async_star_error_test.dart
+++ b/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() {
diff --git a/tests/language_2/async_star_test.dart b/tests/language_2/async_star_test.dart
index 4828485272e..72d772e4fff 100644
--- a/tests/language_2/async_star_test.dart
+++ b/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", () {
diff --git a/tests/language_2/vm/causal_async_exception_stack2_test.dart b/tests/language_2/vm/causal_async_exception_stack2_test.dart
index a92ab7fb24b..94dda4b8bd2 100644
--- a/tests/language_2/vm/causal_async_exception_stack2_test.dart
+++ b/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;
 
diff --git a/tests/language_2/vm/causal_async_exception_stack_test.dart b/tests/language_2/vm/causal_async_exception_stack_test.dart
index 3500facd9f8..b4059e9d8f4 100644
--- a/tests/language_2/vm/causal_async_exception_stack_test.dart
+++ b/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;
 
diff --git a/tests/lib_2/async/stream_controller_async_test.dart b/tests/lib_2/async/stream_controller_async_test.dart
index 3ee17257038..a0792509134 100644
--- a/tests/lib_2/async/stream_controller_async_test.dart
+++ b/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';
diff --git a/tests/lib_2/async/stream_from_iterable_test.dart b/tests/lib_2/async/stream_from_iterable_test.dart
index b8317f05147..d80d9897674 100644
--- a/tests/lib_2/async/stream_from_iterable_test.dart
+++ b/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';
 
diff --git a/tests/lib_2/async/stream_iterator_test.dart b/tests/lib_2/async/stream_iterator_test.dart
index b4a65967d96..c50f53edcae 100644
--- a/tests/lib_2/async/stream_iterator_test.dart
+++ b/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 {
diff --git a/tests/lib_2/async/stream_join_test.dart b/tests/lib_2/async/stream_join_test.dart
index aeac53c6df0..6e3a98b7194 100644
--- a/tests/lib_2/async/stream_join_test.dart
+++ b/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';
 
diff --git a/tests/lib_2/async/stream_periodic2_test.dart b/tests/lib_2/async/stream_periodic2_test.dart
index a69568d27e0..1250131c643 100644
--- a/tests/lib_2/async/stream_periodic2_test.dart
+++ b/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", () {
diff --git a/tests/lib_2/async/stream_periodic3_test.dart b/tests/lib_2/async/stream_periodic3_test.dart
index ab1adc2e30a..a1fbbd07a7b 100644
--- a/tests/lib_2/async/stream_periodic3_test.dart
+++ b/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
diff --git a/tests/lib_2/async/stream_periodic4_test.dart b/tests/lib_2/async/stream_periodic4_test.dart
index cbdc78080f1..e687786b030 100644
--- a/tests/lib_2/async/stream_periodic4_test.dart
+++ b/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(() {});
diff --git a/tests/lib_2/async/stream_periodic5_test.dart b/tests/lib_2/async/stream_periodic5_test.dart
index 2a2f900b169..2be1c96f382 100644
--- a/tests/lib_2/async/stream_periodic5_test.dart
+++ b/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;
diff --git a/tests/lib_2/async/stream_periodic6_test.dart b/tests/lib_2/async/stream_periodic6_test.dart
index 8b51ca8a462..0ef154e5e2f 100644
--- a/tests/lib_2/async/stream_periodic6_test.dart
+++ b/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", () {
diff --git a/tests/lib_2/async/stream_periodic_test.dart b/tests/lib_2/async/stream_periodic_test.dart
index c8ea5a7f39f..43a06d087ec 100644
--- a/tests/lib_2/async/stream_periodic_test.dart
+++ b/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", () {
diff --git a/tests/lib_2/async/stream_single_test.dart b/tests/lib_2/async/stream_single_test.dart
index 57bf54c14f3..0156d71e275 100644
--- a/tests/lib_2/async/stream_single_test.dart
+++ b/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';
 
diff --git a/tests/lib_2/async/stream_single_to_multi_subscriber_test.dart b/tests/lib_2/async/stream_single_to_multi_subscriber_test.dart
index 9cedef05f03..e422a8d9eeb 100644
--- a/tests/lib_2/async/stream_single_to_multi_subscriber_test.dart
+++ b/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';
 
diff --git a/tests/lib_2/async/stream_state_helper.dart b/tests/lib_2/async/stream_state_helper.dart
index 2bd412fd7df..6178495e067 100644
--- a/tests/lib_2/async/stream_state_helper.dart
+++ b/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;
diff --git a/tests/lib_2/async/stream_state_nonzero_timer_test.dart b/tests/lib_2/async/stream_state_nonzero_timer_test.dart
index ff6cebbf107..8c7c11551ae 100644
--- a/tests/lib_2/async/stream_state_nonzero_timer_test.dart
+++ b/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';
 
diff --git a/tests/lib_2/async/stream_state_test.dart b/tests/lib_2/async/stream_state_test.dart
index b56f37f61dc..651f74d8bfb 100644
--- a/tests/lib_2/async/stream_state_test.dart
+++ b/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';
 
diff --git a/tests/lib_2/async/stream_subscription_as_future_test.dart b/tests/lib_2/async/stream_subscription_as_future_test.dart
index 5dc109d9d81..5be5c91d2a8 100644
--- a/tests/lib_2/async/stream_subscription_as_future_test.dart
+++ b/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", () {
diff --git a/tests/lib_2/async/stream_subscription_cancel_test.dart b/tests/lib_2/async/stream_subscription_cancel_test.dart
index 6ad6b566fa2..017bac53a73 100644
--- a/tests/lib_2/async/stream_subscription_cancel_test.dart
+++ b/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', () {
diff --git a/tests/lib_2/async/stream_timeout_test.dart b/tests/lib_2/async/stream_timeout_test.dart
index 876a767e98e..eb33ad25b17 100644
--- a/tests/lib_2/async/stream_timeout_test.dart
+++ b/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);
diff --git a/tests/lib_2/async/stream_transform_test.dart b/tests/lib_2/async/stream_transform_test.dart
index f08f037b15e..e8ac505415b 100644
--- a/tests/lib_2/async/stream_transform_test.dart
+++ b/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';
 
diff --git a/tests/lib_2/async/stream_transformation_broadcast_test.dart b/tests/lib_2/async/stream_transformation_broadcast_test.dart
index 3bb9667918b..839933f6e28 100644
--- a/tests/lib_2/async/stream_transformation_broadcast_test.dart
+++ b/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';
 
diff --git a/tests/lib_2/async/timer_cancel1_test.dart b/tests/lib_2/async/timer_cancel1_test.dart
index 49fb647da9b..1295e9608a3 100644
--- a/tests/lib_2/async/timer_cancel1_test.dart
+++ b/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.
diff --git a/tests/lib_2/async/timer_isActive_test.dart b/tests/lib_2/async/timer_isActive_test.dart
index 84f872f52c4..b688b21ee21 100644
--- a/tests/lib_2/async/timer_isActive_test.dart
+++ b/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", () {
diff --git a/tests/lib_2/async/timer_test.dart b/tests/lib_2/async/timer_test.dart
index 052ff637d84..220ac051f33 100644
--- a/tests/lib_2/async/timer_test.dart
+++ b/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;
diff --git a/tests/lib_2/html/websql_test.dart b/tests/lib_2/html/websql_test.dart
index 07f9ff238d6..4c1e34dda53 100644
--- a/tests/lib_2/html/websql_test.dart
+++ b/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 {
diff --git a/tests/lib_2/isolate/deferred_in_isolate2_test.dart b/tests/lib_2/isolate/deferred_in_isolate2_test.dart
index 636eb732750..47d401ad37a 100644
--- a/tests/lib_2/isolate/deferred_in_isolate2_test.dart
+++ b/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;
 
diff --git a/tests/lib_2/isolate/spawn_uri_multi_test.dart b/tests/lib_2/isolate/spawn_uri_multi_test.dart
index c74c51767cd..60766177ace 100644
--- a/tests/lib_2/isolate/spawn_uri_multi_test.dart
+++ b/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';
diff --git a/tests/lib_2/isolate/spawn_uri_nested_vm_test.dart b/tests/lib_2/isolate/spawn_uri_nested_vm_test.dart
index b13aff1fa71..6d37e262e51 100644
--- a/tests/lib_2/isolate/spawn_uri_nested_vm_test.dart
+++ b/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', () {
diff --git a/tests/lib_2/isolate/spawn_uri_test.dart b/tests/lib_2/isolate/spawn_uri_test.dart
index a4d89c30968..3f522154bd4 100644
--- a/tests/lib_2/isolate/spawn_uri_test.dart
+++ b/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 {
diff --git a/tests/lib_2/isolate/spawn_uri_vm_test.dart b/tests/lib_2/isolate/spawn_uri_vm_test.dart
index a61c2f97bdf..6bc2e6e3670 100644
--- a/tests/lib_2/isolate/spawn_uri_vm_test.dart
+++ b/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', () {
diff --git a/tests/lib_2/isolate/timer_isolate_test.dart b/tests/lib_2/isolate/timer_isolate_test.dart
index cf7fb26e67d..a34005a6b89 100644
--- a/tests/lib_2/isolate/timer_isolate_test.dart
+++ b/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);
 
diff --git a/tests/lib_2/mirrors/library_uri_io_test.dart b/tests/lib_2/mirrors/library_uri_io_test.dart
index 74553b4bea3..e072a836e14 100644
--- a/tests/lib_2/mirrors/library_uri_io_test.dart
+++ b/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 {}
 
diff --git a/tests/lib_2/mirrors/library_uri_package_test.dart b/tests/lib_2/mirrors/library_uri_package_test.dart
index f9db81d266f..a8be56dd122 100644
--- a/tests/lib_2/mirrors/library_uri_package_test.dart
+++ b/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);