Revert "Make flutter_driver be usable from a null-safe app (#75175)" (#75266)

This reverts commit 9fd5242e.

packages/flutter_driver/lib/src/driver/driver.dart

@@ -311,7 +311,7 @@ abstract class FlutterDriver {
   /// See also:
   ///
   ///  * [getWidgetDiagnostics], which gets the [DiagnosticsNode] of a [Widget].
-  Future<Map<String, Object?>> getRenderObjectDiagnostics(
+  Future<Map<String, Object>> getRenderObjectDiagnostics(
       SerializableFinder finder, {
       int subtreeDepth = 0,
       bool includeProperties = true,
@@ -323,7 +323,7 @@ abstract class FlutterDriver {
       subtreeDepth: subtreeDepth,
       includeProperties: includeProperties,
       timeout: timeout,
-    ));
+    )) as Map<String, Object>;
   }
 
   /// Returns a JSON map of the [DiagnosticsNode] that is associated with the
@@ -344,7 +344,7 @@ abstract class FlutterDriver {
   ///
   ///  * [getRenderObjectDiagnostics], which gets the [DiagnosticsNode] of a
   ///    [RenderObject].
-  Future<Map<String, Object?>> getWidgetDiagnostics(
+  Future<Map<String, Object>> getWidgetDiagnostics(
     SerializableFinder finder, {
     int subtreeDepth = 0,
     bool includeProperties = true,
@@ -356,7 +356,7 @@ abstract class FlutterDriver {
       subtreeDepth: subtreeDepth,
       includeProperties: includeProperties,
       timeout: timeout,
-    ));
+    )) as Map<String, Object>;
   }
 
   /// Tell the driver to perform a scrolling action.

packages/flutter_driver/lib/src/driver/vmservice_driver.dart

@@ -149,7 +149,6 @@ class VMServiceFlutterDriver extends FlutterDriver {
               'when another tool (usually a debugger) resumed the isolate '
               'before the flutter_driver did.'
           );
-          return vms.Success();
         } else {
           // Failed to resume due to another reason. Fail hard.
           throw e;
@@ -313,11 +312,11 @@ class VMServiceFlutterDriver extends FlutterDriver {
         isolateId: _appIsolate.id,
         args: serialized,
       ).then<Map<String, dynamic>>((vms.Response value) => value.json!);
-      response = await _warnIfSlow<Map<String, dynamic>>(
+      response = (await _warnIfSlow<Map<String, dynamic>>(
         future: future,
         timeout: command.timeout ?? kUnusuallyLongTimeout,
         message: '${command.kind} message is taking a long time to complete...',
-      );
+      ))!;
       _logCommunication('<<< $response');
     } catch (error, stackTrace) {
       throw DriverError(
@@ -408,7 +407,7 @@ class VMServiceFlutterDriver extends FlutterDriver {
       const int kSecondInMicros = 1000000;
       int currentStart = startTime;
       int currentEnd = startTime + kSecondInMicros; // 1 second of timeline
-      final List<Map<String, Object?>?> chunks = <Map<String, Object?>?>[];
+      final List<Map<String, Object?>?> chunks = <Map<String, Object>?>[];
       do {
         final vms.Timeline chunk = await _serviceClient.getVMTimeline(
           timeOriginMicros: currentStart,
@@ -421,9 +420,9 @@ class VMServiceFlutterDriver extends FlutterDriver {
         currentEnd += kSecondInMicros;
       } while (currentStart < endTime!);
       return Timeline.fromJson(<String, Object>{
-        'traceEvents': <Object?> [
+        'traceEvents': <Object> [
           for (Map<String, Object?>? chunk in chunks)
-            ...chunk!['traceEvents']! as List<Object?>,
+            ...chunk!['traceEvents']! as List<Object>,
         ],
       });
     } catch (error, stackTrace) {
@@ -622,24 +621,22 @@ void _log(String message) {
   driverLog('VMServiceFlutterDriver', message);
 }
 
-Future<T> _warnIfSlow<T>({
-  required Future<T> future,
+Future<T?> _warnIfSlow<T>({
+  required Future<T?> future,
   required Duration timeout,
   required String message,
-}) async {
+}) {
   assert(future != null);
   assert(timeout != null);
   assert(message != null);
-  final Completer<void> completer = Completer<void>();
-  completer.future.timeout(timeout, onTimeout: () {
+  future
+    .timeout(timeout, onTimeout: () {
       _log(message);
       return null;
-  });
-  try {
-    await future.whenComplete(() { completer.complete(); });
-  } catch (e) {
+    })
     // Don't duplicate errors if [future] completes with an error.
-  }
+    .catchError((Object e, StackTrace s) => null);
+
   return future;
 }
 

packages/flutter_driver/test/src/real_tests/flutter_driver_test.dart → packages/flutter_driver/test/flutter_driver_test.dart

@@ -14,7 +14,7 @@ import 'package:flutter_driver/src/driver/timeline.dart';
 import 'package:fake_async/fake_async.dart';
 import 'package:vm_service/vm_service.dart' as vms;
 
-import '../../common.dart';
+import 'common.dart';
 
 /// Magical timeout value that's different from the default.
 const Duration _kTestTimeout = Duration(milliseconds: 1234);

packages/flutter_driver/test/src/real_tests/test_organisation_test.dart

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import 'dart:io';
-
-import 'package:flutter_test/flutter_test.dart';
-import 'package:path/path.dart' as p;
-
-void main() {
-  // On CI we only execute the tests in the `test/src/real_test` and
-  // `test/src/web_test` directory, see https://github.com/flutter/flutter/blob/master/dev/bots/test.dart.
-  // This test ensures that we do not accidentally add tests in the the `test`
-  // or `test/src` directory, which would not run on CI.
-  test('test files exist only in directories where CI expects them', () {
-    final String flutterDriverPath = p.dirname(Platform.script.path);
-    expect(p.basename(flutterDriverPath), 'flutter_driver');
-    final String flutterDriverTestPath = p.join(flutterDriverPath, 'test');
-    final Directory flutterDriverTestDir = Directory(flutterDriverTestPath);
-    expect(flutterDriverTestDir.existsSync(), isTrue);
-    final List<String> filesInTestDir = flutterDriverTestDir.listSync()
-        .map((FileSystemEntity e) => p.basename(e.path))
-        .where((String s) => p.extension(s) == '.dart')
-        .toList();
-
-    // There are no test files in the `test` directory.
-    expect(filesInTestDir, <String>['common.dart']);
-
-    // There are no test files in the src directory.
-    final String flutterDriverTestSrcPath = p.join(flutterDriverTestPath, 'src');
-    final Directory flutterDriverTestSrcDir = Directory(flutterDriverTestSrcPath);
-    expect(flutterDriverTestSrcDir.existsSync(), isTrue);
-    final List<String> filesInTestSrcDir = flutterDriverTestSrcDir.listSync()
-        .map((FileSystemEntity e) => p.basename(e.path))
-        .where((String s) => p.extension(s) == '.dart')
-        .toList();
-
-    // There are no test files in the `test/src` directory.
-    expect(filesInTestSrcDir, unorderedEquals(<String>[]));
-  });
-}