[dart][dart-dio] Fix failing master due to unstable test dependency (#8870)

* replace branch ref with commit ref (new release of http_mock_adapter coming soon)

samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake_tests/pubspec.yaml

@@ -13,7 +13,7 @@ dev_dependencies:
   http_mock_adapter:
     git:
       url: https://github.com/kuhnroyal/http-mock-adapter.git
-      ref: feature/response-building
+      ref: 2d7bb10369be49d3c53a6567cc76e8580b5d133d
   openapi:
     path: ../petstore_client_lib_fake
   test: 1.15.5

samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake_tests/test/api/fake_api_test.dart

@@ -25,6 +25,7 @@ void main() {
       test('complete', () async {
         server.onPost(
           '/fake',
+          (request) => request.reply(200, null),
           data: {
             'number': '3',
             'double': '-13.57',
@@ -42,7 +43,6 @@ void main() {
             'content-type': 'application/x-www-form-urlencoded',
             'content-length': 255,
           },
-          handler: (response) => response.reply(200, null),
         );
 
         final response = await client.getFakeApi().testEndpointParameters(
@@ -65,6 +65,7 @@ void main() {
       test('minimal', () async {
         server.onPost(
           '/fake',
+          (request) => request.reply(200, null),
           data: {
             'byte': '0',
             'double': '-13.57',
@@ -75,7 +76,6 @@ void main() {
             'content-type': 'application/x-www-form-urlencoded',
             'content-length': 79,
           },
-          handler: (response) => response.reply(200, null),
         );
 
         final response = await client.getFakeApi().testEndpointParameters(
@@ -95,6 +95,7 @@ void main() {
         // form data in the body but some weird map
         server.onGet(
           '/fake',
+          (request) => request.reply(200, null),
           data: {
             'enum_form_string': 'formString',
             'enum_form_string_array': '[foo, bar]',
@@ -102,7 +103,6 @@ void main() {
           headers: <String, dynamic>{
             'content-type': 'application/x-www-form-urlencoded',
           },
-          handler: (response) => response.reply(200, null),
         );
 
         final response = await client.getFakeApi().testEnumParameters(

samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake_tests/test/api/pet_api_test.dart

@@ -29,7 +29,7 @@ void main() {
       test('complete', () async {
         server.onGet(
           '/pet/5',
-          handler: (response) => response.reply(200, {
+          (request) => request.reply(200, {
             'id': 5,
             'name': 'Paula',
             'status': 'sold',
@@ -70,7 +70,7 @@ void main() {
       test('minimal', () async {
         server.onGet(
           '/pet/5',
-          handler: (response) => response.reply(200, {
+          (request) => request.reply(200, {
             'id': 5,
             'name': 'Paula',
             'photoUrls': <String>[],
@@ -94,6 +94,7 @@ void main() {
       test('complete', () async {
         server.onPost(
           '/pet',
+          (request) => request.reply(200, ''),
           data: {
             'id': 5,
             'name': 'Paula',
@@ -121,7 +122,6 @@ void main() {
             'content-type': 'application/json',
             'content-length': 204,
           },
-          handler: (response) => response.reply(200, ''),
         );
 
         final response = await client.getPetApi().addPet(Pet((p) => p
@@ -147,6 +147,7 @@ void main() {
       test('minimal', () async {
         server.onPost(
           '/pet',
+          (request) => request.reply(200, ''),
           data: {
             'id': 5,
             'name': 'Paula',
@@ -156,7 +157,6 @@ void main() {
             'content-type': 'application/json',
             'content-length': 38,
           },
-          handler: (response) => response.reply(200, ''),
         );
 
         final response = await client.getPetApi().addPet(Pet((p) => p
@@ -171,16 +171,7 @@ void main() {
       test('findByStatus', () async {
         server.onRoute(
           '/pet/findByStatus',
-          request: Request(
-            method: RequestMethods.GET,
-            queryParameters: <String, dynamic>{
-              'status': <String>[
-                'available',
-                'sold',
-              ],
-            },
-          ),
-          handler: (response) => response.reply(200, [
+          (request) => request.reply(200, [
             {
               'id': 5,
               'name': 'Paula',
@@ -194,6 +185,15 @@ void main() {
               'photoUrls': <String>[],
             },
           ]),
+          request: Request(
+            method: RequestMethods.GET,
+            queryParameters: <String, dynamic>{
+              'status': <String>[
+                'available',
+                'sold',
+              ],
+            },
+          ),
         );
 
         final response = await client.getPetApi().findPetsByStatus(

samples/openapi3/client/petstore/dart-dio/petstore_client_lib_fake_tests/test/api/store_api_test.dart

@@ -24,14 +24,14 @@ void main() {
 
         server.onGet(
           '/store/inventory',
-          headers: <String, dynamic>{
-            'api_key': 'SECRET_API_KEY',
-          },
-          handler: (response) => response.reply(200, {
+          (request) => request.reply(200, {
             'foo': 5,
             'bar': 999,
             'baz': 0,
           }),
+          headers: <String, dynamic>{
+            'api_key': 'SECRET_API_KEY',
+          },
         );
 
         final response = await client.getStoreApi().getInventory();