diff --git a/pkg/analysis_server/test/abstract_context.dart b/pkg/analysis_server/test/abstract_context.dart
index 4f250ab8662..a64d32846a5 100644
--- a/pkg/analysis_server/test/abstract_context.dart
+++ b/pkg/analysis_server/test/abstract_context.dart
@@ -19,11 +19,11 @@ import 'package:analyzer/src/test_utilities/platform.dart';
 import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:analyzer/src/util/file_paths.dart' as file_paths;
 import 'package:analyzer/src/utilities/extensions/file_system.dart';
+import 'package:analyzer_utilities/test/mock_packages/mock_packages.dart';
 import 'package:linter/src/rules.dart';
 import 'package:meta/meta.dart';
 import 'package:test/test.dart';
 
-import 'src/utilities/mock_packages.dart';
 import 'support/configuration_files.dart';
 import 'test_macros.dart';
 
diff --git a/pkg/analysis_server/test/analysis_server_base.dart b/pkg/analysis_server/test/analysis_server_base.dart
index ccd09dd0c82..4fa06684c62 100644
--- a/pkg/analysis_server/test/analysis_server_base.dart
+++ b/pkg/analysis_server/test/analysis_server_base.dart
@@ -18,12 +18,12 @@ import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/test_utilities/mock_sdk.dart';
 import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:analyzer/src/util/file_paths.dart' as file_paths;
+import 'package:analyzer_utilities/test/mock_packages/mock_packages.dart';
 import 'package:meta/meta.dart';
 import 'package:test/test.dart';
 import 'package:unified_analytics/unified_analytics.dart';
 
 import 'mocks.dart';
-import 'src/utilities/mock_packages.dart';
 import 'support/configuration_files.dart';
 import 'test_macros.dart';
 
diff --git a/pkg/analysis_server/test/integration/support/integration_tests.dart b/pkg/analysis_server/test/integration/support/integration_tests.dart
index 156e004986e..20ba99238e7 100644
--- a/pkg/analysis_server/test/integration/support/integration_tests.dart
+++ b/pkg/analysis_server/test/integration/support/integration_tests.dart
@@ -14,12 +14,12 @@ import 'package:analyzer/file_system/file_system.dart' as analyzer_fs;
 import 'package:analyzer/file_system/physical_file_system.dart';
 import 'package:analyzer/src/util/file_paths.dart' as file_paths;
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
+import 'package:analyzer_utilities/test/mock_packages/mock_packages.dart';
 import 'package:meta/meta.dart';
 import 'package:path/path.dart' as path;
 import 'package:test/test.dart';
 
 import '../../analysis_server_base.dart' show AnalysisOptionsFileConfig;
-import '../../src/utilities/mock_packages.dart';
 import '../../support/configuration_files.dart';
 import '../../test_macros.dart' as macros;
 import 'integration_test_methods.dart';
diff --git a/pkg/analysis_server/test/lsp/server_abstract.dart b/pkg/analysis_server/test/lsp/server_abstract.dart
index b64af1e3978..0a06c8c9fc2 100644
--- a/pkg/analysis_server/test/lsp/server_abstract.dart
+++ b/pkg/analysis_server/test/lsp/server_abstract.dart
@@ -23,6 +23,7 @@ import 'package:analyzer/src/util/file_paths.dart' as file_paths;
 import 'package:analyzer_plugin/protocol/protocol.dart' as plugin;
 import 'package:analyzer_plugin/src/protocol/protocol_internal.dart' as plugin;
 import 'package:analyzer_plugin/src/utilities/client_uri_converter.dart';
+import 'package:analyzer_utilities/test/mock_packages/mock_packages.dart';
 import 'package:collection/collection.dart';
 import 'package:language_server_protocol/json_parsing.dart';
 import 'package:path/path.dart' as path;
@@ -31,7 +32,6 @@ import 'package:unified_analytics/unified_analytics.dart';
 
 import '../mocks.dart';
 import '../mocks_lsp.dart';
-import '../src/utilities/mock_packages.dart';
 import '../support/configuration_files.dart';
 import '../test_macros.dart';
 import 'change_verifier.dart';
diff --git a/pkg/analysis_server/test/mock_packages/.dart_tool/package_config.json b/pkg/analysis_server/test/mock_packages/.dart_tool/package_config.json
deleted file mode 100644
index 19affdb662e..00000000000
--- a/pkg/analysis_server/test/mock_packages/.dart_tool/package_config.json
+++ /dev/null
@@ -1,35 +0,0 @@
-{
-  "configVersion": 2,
-  "packages": [
-    {
-      "name": "flutter",
-      "rootUri": "../flutter",
-      "packageUri": "lib/",
-      "languageVersion": "2.9"
-    },
-    {
-      "name": "meta",
-      "rootUri": "../meta",
-      "packageUri": "lib/",
-      "languageVersion": "2.9"
-    },
-    {
-      "name": "pedantic",
-      "rootUri": "../pedantic",
-      "packageUri": "lib/",
-      "languageVersion": "2.9"
-    },
-    {
-      "name": "ui",
-      "rootUri": "../ui",
-      "packageUri": "lib/",
-      "languageVersion": "2.9"
-    },
-    {
-      "name": "vector_math",
-      "rootUri": "../vector_math",
-      "packageUri": "lib/",
-      "languageVersion": "2.9"
-    }
-  ]
-}
diff --git a/pkg/analysis_server/test/src/cider/assists_test.dart b/pkg/analysis_server/test/src/cider/assists_test.dart
index 6bc2de84d94..b2956c90c87 100644
--- a/pkg/analysis_server/test/src/cider/assists_test.dart
+++ b/pkg/analysis_server/test/src/cider/assists_test.dart
@@ -10,10 +10,10 @@ import 'package:analysis_server/src/services/correction/fix_processor.dart';
 import 'package:analyzer/source/line_info.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart' show SourceEdit;
 import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:analyzer_utilities/test/mock_packages/mock_packages.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import '../utilities/mock_packages.dart';
 import 'cider_service.dart';
 
 void main() {
diff --git a/pkg/analysis_server/test/src/cider/document_symbols_test.dart b/pkg/analysis_server/test/src/cider/document_symbols_test.dart
index f1ebc405955..3d7534bf2a0 100644
--- a/pkg/analysis_server/test/src/cider/document_symbols_test.dart
+++ b/pkg/analysis_server/test/src/cider/document_symbols_test.dart
@@ -4,10 +4,10 @@
 
 import 'package:analysis_server/lsp_protocol/protocol.dart';
 import 'package:analysis_server/src/cider/document_symbols.dart';
+import 'package:analyzer_utilities/test/mock_packages/mock_packages.dart';
 import 'package:test/expect.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import '../utilities/mock_packages.dart';
 import 'cider_service.dart';
 
 void main() {
diff --git a/pkg/analysis_server/test/src/cider/rename_test.dart b/pkg/analysis_server/test/src/cider/rename_test.dart
index 6d772a85d6e..31469214b22 100644
--- a/pkg/analysis_server/test/src/cider/rename_test.dart
+++ b/pkg/analysis_server/test/src/cider/rename_test.dart
@@ -5,10 +5,10 @@
 import 'package:analysis_server/src/cider/rename.dart';
 import 'package:analyzer/source/line_info.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
+import 'package:analyzer_utilities/test/mock_packages/mock_packages.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import '../utilities/mock_packages.dart';
 import 'cider_service.dart';
 
 void main() {
diff --git a/pkg/analysis_server/test/support/configuration_files.dart b/pkg/analysis_server/test/support/configuration_files.dart
index 0573eb50a0e..e5060f3b170 100644
--- a/pkg/analysis_server/test/support/configuration_files.dart
+++ b/pkg/analysis_server/test/support/configuration_files.dart
@@ -9,8 +9,7 @@ import 'package:analyzer/src/test_utilities/package_config_file_builder.dart';
 import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:analyzer/src/util/file_paths.dart' as file_paths;
 import 'package:analyzer_utilities/package_root.dart' as package_root;
-
-import '../src/utilities/mock_packages.dart';
+import 'package:analyzer_utilities/test/mock_packages/mock_packages.dart';
 
 /// A mixin adding functionality to write `.dart_tool/package_config.json`
 /// files along with mock packages to a [ResourceProvider].
diff --git a/pkg/analyzer_utilities/analysis_options.yaml b/pkg/analyzer_utilities/analysis_options.yaml
index 86c10cc2aa2..56acbc8ebb7 100644
--- a/pkg/analyzer_utilities/analysis_options.yaml
+++ b/pkg/analyzer_utilities/analysis_options.yaml
@@ -1,6 +1,8 @@
 include: package:lints/recommended.yaml
 
 analyzer:
+  exclude:
+    - lib/test/mock_packages/package_content/**
   language:
     strict-casts: true
     strict-inference: true
diff --git a/pkg/analysis_server/test/src/utilities/mock_packages.dart b/pkg/analyzer_utilities/lib/test/mock_packages/mock_packages.dart
similarity index 98%
rename from pkg/analysis_server/test/src/utilities/mock_packages.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/mock_packages.dart
index 284d52630cd..2d0613353e6 100644
--- a/pkg/analysis_server/test/src/utilities/mock_packages.dart
+++ b/pkg/analyzer_utilities/lib/test/mock_packages/mock_packages.dart
@@ -4,6 +4,7 @@
 
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/file_system/physical_file_system.dart';
+// ignore: implementation_imports
 import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:analyzer_utilities/package_root.dart' as package_root;
 import 'package:path/path.dart' as path;
@@ -14,9 +15,11 @@ void _cacheFiles(Map<String, String> cachedFiles) {
   var packageRoot = pathContext.normalize(package_root.packageRoot);
   var mockPath = pathContext.join(
     packageRoot,
-    'analysis_server',
+    'analyzer_utilities',
+    'lib',
     'test',
     'mock_packages',
+    'package_content',
   );
 
   void addFiles(Resource resource) {
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/animation.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/animation.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/animation.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/animation.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/cupertino.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/cupertino.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/cupertino.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/cupertino.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/foundation.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/foundation.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/foundation.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/foundation.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/material.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/material.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/material.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/material.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/painting.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/painting.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/painting.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/painting.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/rendering.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/rendering.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/rendering.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/rendering.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/animation/animation_controller.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/animation/animation_controller.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/animation/animation_controller.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/animation/animation_controller.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/cupertino/colors.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/cupertino/colors.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/cupertino/colors.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/cupertino/colors.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/foundation/diagnostics.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/foundation/diagnostics.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/foundation/diagnostics.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/foundation/diagnostics.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/foundation/key.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/foundation/key.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/foundation/key.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/foundation/key.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/material/app_bar.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/material/app_bar.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/material/app_bar.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/material/app_bar.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/material/colors.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/material/colors.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/material/colors.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/material/colors.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/material/icons.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/material/icons.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/material/icons.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/material/icons.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/material/ink_well.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/material/ink_well.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/material/ink_well.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/material/ink_well.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/material/scaffold.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/material/scaffold.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/material/scaffold.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/material/scaffold.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/painting/alignment.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/painting/alignment.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/painting/alignment.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/painting/alignment.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/painting/basic_types.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/painting/basic_types.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/painting/basic_types.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/painting/basic_types.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/painting/border_radius.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/painting/border_radius.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/painting/border_radius.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/painting/border_radius.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/painting/borders.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/painting/borders.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/painting/borders.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/painting/borders.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/painting/box_border.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/painting/box_border.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/painting/box_border.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/painting/box_border.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/painting/box_decoration.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/painting/box_decoration.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/painting/box_decoration.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/painting/box_decoration.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/painting/colors.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/painting/colors.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/painting/colors.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/painting/colors.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/painting/decoration.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/painting/decoration.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/painting/decoration.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/painting/decoration.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/painting/edge_insets.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/painting/edge_insets.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/painting/edge_insets.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/painting/edge_insets.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/painting/text_painter.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/painting/text_painter.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/painting/text_painter.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/painting/text_painter.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/painting/text_style.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/painting/text_style.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/painting/text_style.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/painting/text_style.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/rendering/flex.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/rendering/flex.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/rendering/flex.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/rendering/flex.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/rendering/paragraph.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/rendering/paragraph.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/rendering/paragraph.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/rendering/paragraph.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/widgets/async.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/widgets/async.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/widgets/async.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/widgets/async.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/widgets/basic.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/widgets/basic.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/widgets/basic.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/widgets/basic.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/widgets/container.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/widgets/container.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/widgets/container.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/widgets/container.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/widgets/framework.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/widgets/framework.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/widgets/framework.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/widgets/framework.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/widgets/gesture_detector.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/widgets/gesture_detector.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/widgets/gesture_detector.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/widgets/gesture_detector.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/widgets/icon.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/widgets/icon.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/widgets/icon.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/widgets/icon.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/widgets/placeholder.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/widgets/placeholder.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/widgets/placeholder.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/widgets/placeholder.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/widgets/text.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/widgets/text.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/widgets/text.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/widgets/text.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/src/widgets/ticker_provider.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/widgets/ticker_provider.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/src/widgets/ticker_provider.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/src/widgets/ticker_provider.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/lib/widgets.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/widgets.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/lib/widgets.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/lib/widgets.dart
diff --git a/pkg/analysis_server/test/mock_packages/flutter/pubspec.yaml b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/pubspec.yaml
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/flutter/pubspec.yaml
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/flutter/pubspec.yaml
diff --git a/pkg/analysis_server/test/mock_packages/meta/lib/meta.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/meta/lib/meta.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/meta/lib/meta.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/meta/lib/meta.dart
diff --git a/pkg/analysis_server/test/mock_packages/meta/lib/meta_meta.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/meta/lib/meta_meta.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/meta/lib/meta_meta.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/meta/lib/meta_meta.dart
diff --git a/pkg/analysis_server/test/mock_packages/meta/pubspec.yaml b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/meta/pubspec.yaml
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/meta/pubspec.yaml
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/meta/pubspec.yaml
diff --git a/pkg/analysis_server/test/mock_packages/pedantic/lib/analysis_options.yaml b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/pedantic/lib/analysis_options.yaml
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/pedantic/lib/analysis_options.yaml
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/pedantic/lib/analysis_options.yaml
diff --git a/pkg/analysis_server/test/mock_packages/ui/lib/geometry.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/ui/lib/geometry.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/ui/lib/geometry.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/ui/lib/geometry.dart
diff --git a/pkg/analysis_server/test/mock_packages/ui/lib/painting.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/ui/lib/painting.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/ui/lib/painting.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/ui/lib/painting.dart
diff --git a/pkg/analysis_server/test/mock_packages/ui/lib/text.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/ui/lib/text.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/ui/lib/text.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/ui/lib/text.dart
diff --git a/pkg/analysis_server/test/mock_packages/ui/lib/ui.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/ui/lib/ui.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/ui/lib/ui.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/ui/lib/ui.dart
diff --git a/pkg/analysis_server/test/mock_packages/vector_math/lib/matrix4.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/vector_math/lib/matrix4.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/vector_math/lib/matrix4.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/vector_math/lib/matrix4.dart
diff --git a/pkg/analysis_server/test/mock_packages/vector_math/lib/vector_math_64.dart b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/vector_math/lib/vector_math_64.dart
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/vector_math/lib/vector_math_64.dart
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/vector_math/lib/vector_math_64.dart
diff --git a/pkg/analysis_server/test/mock_packages/vector_math/pubspec.yaml b/pkg/analyzer_utilities/lib/test/mock_packages/package_content/vector_math/pubspec.yaml
similarity index 100%
rename from pkg/analysis_server/test/mock_packages/vector_math/pubspec.yaml
rename to pkg/analyzer_utilities/lib/test/mock_packages/package_content/vector_math/pubspec.yaml
diff --git a/pkg/linter/test_data/rules/.dart_tool/package_config.json b/pkg/linter/test_data/rules/.dart_tool/package_config.json
index 9d5fbe5fb1f..260e94c0ef9 100644
--- a/pkg/linter/test_data/rules/.dart_tool/package_config.json
+++ b/pkg/linter/test_data/rules/.dart_tool/package_config.json
@@ -3,13 +3,13 @@
   "packages": [
     {
       "name": "flutter",
-      "rootUri": "../../mock_packages/flutter/",
+      "rootUri": "../../../../analyzer_utilities/lib/test/mock_packages/package_content/flutter/",
       "packageUri": "lib/",
       "languageVersion": "2.17"
     },
     {
       "name": "meta",
-      "rootUri": "../../../../analysis_server/test/mock_packages/meta/",
+      "rootUri": "../../../../analyzer_utilities/lib/test/mock_packages/package_content/meta/",
       "packageUri": "lib/",
       "languageVersion": "2.17"
     }
diff --git a/tools/package_deps/bin/package_deps.dart b/tools/package_deps/bin/package_deps.dart
index 7c2bc60e231..7fb1375a177 100644
--- a/tools/package_deps/bin/package_deps.dart
+++ b/tools/package_deps/bin/package_deps.dart
@@ -333,8 +333,8 @@ class Package implements Comparable<Package> {
       if (entity is Directory) {
         final uriPath = entity.uri.path;
         const excludedPaths = {
-          'pkg/analysis_server/test/mock_packages/',
           'pkg/analyzer_cli/test/data/',
+          'pkg/analyzer_utilities/lib/test/mock_packages/package_content/',
           'pkg/front_end/test/id_testing/data/',
           'pkg/front_end/test/enable_non_nullable/data/',
           'pkg/front_end/test/language_versioning/data/',