test flutter framework with null-safety (#59280)

dev/bots/test.dart

@@ -544,24 +544,27 @@ Future<void> _runAddToAppLifeCycleTests() async {
 
 Future<void> _runFrameworkTests() async {
   final bq.BigqueryApi bigqueryApi = await _getBigqueryApi();
+  final List<String> nullSafetyOptions = <String>['--enable-experiment=non-nullable', '--no-sound-null-safety'];
+  final List<String> trackWidgetCreationAlternatives = <String>['--track-widget-creation', '--no-track-widget-creation'];
 
   Future<void> runWidgets() async {
     print('${green}Running packages/flutter tests for$reset: ${cyan}test/widgets/$reset');
-    await _runFlutterTest(
-      path.join(flutterRoot, 'packages', 'flutter'),
-      options: <String>['--track-widget-creation'],
-      tableData: bigqueryApi?.tabledata,
-      tests: <String>[ path.join('test', 'widgets') + path.separator ],
-    );
-    await _runFlutterTest(
-      path.join(flutterRoot, 'packages', 'flutter'),
-      options: <String>['--no-track-widget-creation'],
-      tableData: bigqueryApi?.tabledata,
-      tests: <String>[ path.join('test', 'widgets') + path.separator ],
-    );
+    for (final String trackWidgetCreationOption in trackWidgetCreationAlternatives) {
+      await _runFlutterTest(
+        path.join(flutterRoot, 'packages', 'flutter'),
+        options: <String>[trackWidgetCreationOption, ...nullSafetyOptions],
+        tableData: bigqueryApi?.tabledata,
+        tests: <String>[ path.join('test', 'widgets') + path.separator ],
+      );
+    }
     // Try compiling code outside of the packages/flutter directory with and without --track-widget-creation
-    await _runFlutterTest(path.join(flutterRoot, 'dev', 'integration_tests', 'flutter_gallery'), options: <String>['--track-widget-creation'], tableData: bigqueryApi?.tabledata);
-    await _runFlutterTest(path.join(flutterRoot, 'dev', 'integration_tests', 'flutter_gallery'), options: <String>['--no-track-widget-creation'], tableData: bigqueryApi?.tabledata);
+    for (final String trackWidgetCreationOption in trackWidgetCreationAlternatives) {
+      await _runFlutterTest(
+        path.join(flutterRoot, 'dev', 'integration_tests', 'flutter_gallery'),
+        options: <String>[trackWidgetCreationOption],
+        tableData: bigqueryApi?.tabledata,
+      );
+    }
   }
 
   Future<void> runLibraries() async {
@@ -572,18 +575,14 @@ Future<void> _runFrameworkTests() async {
       .map<String>((Directory dir) => path.join('test', path.basename(dir.path)) + path.separator)
       .toList();
     print('${green}Running packages/flutter tests$reset for: $cyan${tests.join(", ")}$reset');
-    await _runFlutterTest(
-      path.join(flutterRoot, 'packages', 'flutter'),
-      options: <String>['--track-widget-creation'],
-      tableData: bigqueryApi?.tabledata,
-      tests: tests,
-    );
-    await _runFlutterTest(
-      path.join(flutterRoot, 'packages', 'flutter'),
-      options: <String>['--no-track-widget-creation'],
-      tableData: bigqueryApi?.tabledata,
-      tests: tests,
-    );
+    for (final String trackWidgetCreationOption in trackWidgetCreationAlternatives) {
+      await _runFlutterTest(
+        path.join(flutterRoot, 'packages', 'flutter'),
+        options: <String>[trackWidgetCreationOption, ...nullSafetyOptions],
+        tableData: bigqueryApi?.tabledata,
+        tests: tests,
+      );
+    }
   }
 
   Future<void> runMisc() async {
@@ -604,9 +603,7 @@ Future<void> _runFrameworkTests() async {
     await _runFlutterTest(path.join(flutterRoot, 'packages', 'flutter_localizations'), tableData: bigqueryApi?.tabledata);
     await _runFlutterTest(path.join(flutterRoot, 'packages', 'flutter_test'), tableData: bigqueryApi?.tabledata);
     await _runFlutterTest(path.join(flutterRoot, 'packages', 'fuchsia_remote_debug_protocol'), tableData: bigqueryApi?.tabledata);
-    await _runFlutterTest(path.join(flutterRoot, 'dev', 'integration_tests', 'non_nullable'),
-      options: <String>['--enable-experiment=non-nullable', '--no-sound-null-safety'],
-    );
+    await _runFlutterTest(path.join(flutterRoot, 'dev', 'integration_tests', 'non_nullable'), options: nullSafetyOptions);
     await _runFlutterTest(
       path.join(flutterRoot, 'dev', 'tracing_tests'),
       options: <String>['--enable-vmservice'],

examples/layers/rendering/custom_coordinate_systems.dart

@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+// @dart = 2.8
+
 // This example shows how to build a render tree with a non-cartesian coordinate
 // system. Most of the guts of this examples are in src/sector_layout.dart.
 

examples/layers/rendering/src/sector_layout.dart

@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+// @dart = 2.8
+
 import 'dart:math' as math;
 
 import 'package:flutter/rendering.dart';

packages/flutter/pubspec.yaml

@@ -5,7 +5,7 @@ homepage: http://flutter.dev
 
 environment:
   # The pub client defaults to an <2.0.0 sdk constraint which we need to explicitly overwrite.
-  sdk: ">=2.2.2 <3.0.0"
+  sdk: ">=2.9.0-14.0.dev <3.0.0"
 
 dependencies:
   # To update these, use "flutter update-packages --force-upgrade".