diff --git a/packages/flutter_tools/test/general.shard/base/process_test.dart b/packages/flutter_tools/test/general.shard/base/process_test.dart
index 220261400b1..9249d86977a 100644
--- a/packages/flutter_tools/test/general.shard/base/process_test.dart
+++ b/packages/flutter_tools/test/general.shard/base/process_test.dart
@@ -4,21 +4,15 @@
 
 // @dart = 2.8
 
-import 'dart:async';
-
-import 'package:fake_async/fake_async.dart';
 import 'package:flutter_tools/src/base/io.dart';
 import 'package:flutter_tools/src/base/logger.dart';
 import 'package:flutter_tools/src/base/platform.dart';
 import 'package:flutter_tools/src/base/process.dart';
 import 'package:flutter_tools/src/base/terminal.dart';
-import 'package:mockito/mockito.dart';
 
 import '../../src/common.dart';
 import '../../src/fake_process_manager.dart';
 import '../../src/fakes.dart';
-import '../../src/mocks.dart' show MockProcessManager,
-                                   flakyProcessFactory;
 
 void main() {
   group('process exceptions', () {
@@ -64,66 +58,44 @@ void main() {
   });
 
   group('output formatting', () {
-    MockProcessManager mockProcessManager;
+    FakeProcessManager processManager;
     ProcessUtils processUtils;
-    BufferLogger mockLogger;
+    BufferLogger logger;
 
     setUp(() {
-      mockProcessManager = MockProcessManager();
-      mockLogger = BufferLogger(
-        terminal: AnsiTerminal(
-          stdio: FakeStdio(),
-          platform: FakePlatform(stdoutSupportsAnsi: false),
-        ),
-        outputPreferences: OutputPreferences(wrapText: true, wrapColumn: 40),
-      );
+      processManager = FakeProcessManager.empty();
+      logger = BufferLogger.test();
       processUtils = ProcessUtils(
-        processManager: mockProcessManager,
-        logger: mockLogger,
+        processManager: processManager,
+        logger: logger,
       );
     });
 
-    FakeProcess Function(List<String>) processMetaFactory(List<String> stdout, {
-      List<String> stderr = const <String>[],
-    }) {
-      final Stream<List<int>> stdoutStream = Stream<List<int>>.fromIterable(
-        stdout.map<List<int>>((String s) => s.codeUnits,
-      ));
-      final Stream<List<int>> stderrStream = Stream<List<int>>.fromIterable(
-        stderr.map<List<int>>((String s) => s.codeUnits,
-      ));
-      return (List<String> command) => FakeProcess(stdout: stdoutStream, stderr: stderrStream);
-    }
-
     testWithoutContext('Command output is not wrapped.', () async {
       final List<String> testString = <String>['0123456789' * 10];
-      mockProcessManager.processFactory = processMetaFactory(testString, stderr: testString);
+      processManager.addCommand(FakeCommand(
+        command: const <String>['command'],
+        stdout: testString.join(''),
+        stderr: testString.join(''),
+      ));
+
       await processUtils.stream(<String>['command']);
-      expect(mockLogger.statusText, equals('${testString[0]}\n'));
-      expect(mockLogger.errorText, equals('${testString[0]}\n'));
+
+      expect(logger.statusText, equals('${testString[0]}\n'));
+      expect(logger.errorText, equals('${testString[0]}\n'));
     });
   });
 
   group('run', () {
-    const Duration delay = Duration(seconds: 2);
-    MockProcessManager flakyProcessManager;
     FakeProcessManager fakeProcessManager;
     ProcessUtils processUtils;
-    ProcessUtils flakyProcessUtils;
 
     setUp(() {
-      // MockProcessManager has an implementation of start() that returns the
-      // result of processFactory.
-      flakyProcessManager = MockProcessManager();
       fakeProcessManager = FakeProcessManager.empty();
       processUtils = ProcessUtils(
         processManager: fakeProcessManager,
         logger: BufferLogger.test(),
       );
-      flakyProcessUtils = ProcessUtils(
-        processManager: flakyProcessManager,
-        logger: BufferLogger.test(),
-      );
     });
 
     testWithoutContext(' succeeds on success', () async {
@@ -189,68 +161,6 @@ void main() {
         throwsA(isA<ProcessException>()),
       );
     });
-
-    testWithoutContext(' flaky process fails without retry', () async {
-      flakyProcessManager.processFactory = flakyProcessFactory(
-        flakes: 1,
-        delay: delay,
-      );
-
-      await FakeAsync().run((FakeAsync time) async {
-        final Duration timeout = delay + const Duration(seconds: 1);
-        final RunResult result = await flakyProcessUtils.run(
-          <String>['dummy'],
-          timeout: timeout,
-        );
-        time.elapse(timeout);
-        expect(result.exitCode, -9);
-      });
-    }, skip: true); // TODO(jonahwilliams): clean up with https://github.com/flutter/flutter/issues/60675
-
-    testWithoutContext(' flaky process succeeds with retry', () async {
-      flakyProcessManager.processFactory = flakyProcessFactory(
-        flakes: 1,
-        delay: delay,
-      );
-      await FakeAsync().run((FakeAsync time) async {
-        final Duration timeout = delay - const Duration(milliseconds: 500);
-        final RunResult result = await flakyProcessUtils.run(
-          <String>['dummy'],
-          timeout: timeout,
-          timeoutRetries: 1,
-        );
-        time.elapse(timeout);
-        expect(result.exitCode, 0);
-      });
-    }, skip: true); // TODO(jonahwilliams): clean up with https://github.com/flutter/flutter/issues/60675
-
-    testWithoutContext(' flaky process generates ProcessException on timeout', () async {
-      final Completer<List<int>> flakyStderr = Completer<List<int>>();
-      final Completer<List<int>> flakyStdout = Completer<List<int>>();
-      flakyProcessManager.processFactory = flakyProcessFactory(
-        flakes: 1,
-        delay: delay,
-        stderr: () => Stream<List<int>>.fromFuture(flakyStderr.future),
-        stdout: () => Stream<List<int>>.fromFuture(flakyStdout.future),
-      );
-      when(flakyProcessManager.killPid(any)).thenAnswer((_) {
-        // Don't let the stderr stream stop until the process is killed. This
-        // ensures that runAsync() does not delay killing the process until
-        // stdout and stderr are drained (which won't happen).
-        flakyStderr.complete(<int>[]);
-        flakyStdout.complete(<int>[]);
-        return true;
-      });
-      await FakeAsync().run((FakeAsync time) async {
-        final Duration timeout = delay - const Duration(milliseconds: 500);
-        expect(() => flakyProcessUtils.run(
-          <String>['dummy'],
-          timeout: timeout,
-          timeoutRetries: 0,
-        ), throwsA(isA<ProcessException>()));
-        time.elapse(timeout);
-      });
-    }, skip: true); // TODO(jonahwilliams): clean up with https://github.com/flutter/flutter/issues/60675
   });
 
   group('runSync', () {
@@ -404,50 +314,55 @@ void main() {
   });
 
   group('exitsHappySync', () {
-    MockProcessManager mockProcessManager;
+    FakeProcessManager processManager;
     ProcessUtils processUtils;
 
     setUp(() {
-      mockProcessManager = MockProcessManager();
+      processManager = FakeProcessManager.empty();
       processUtils = ProcessUtils(
-        processManager: mockProcessManager,
+        processManager: processManager,
         logger: BufferLogger.test(),
       );
     });
 
-    testWithoutContext(' succeeds on success', () async {
-      when(mockProcessManager.runSync(<String>['whoohoo'])).thenReturn(
-        ProcessResult(0, 0, '', '')
-      );
+    testWithoutContext('succeeds on success', () async {
+      processManager.addCommand(const FakeCommand(
+        command: <String>['whoohoo'],
+      ));
+
       expect(processUtils.exitsHappySync(<String>['whoohoo']), isTrue);
     });
 
-    testWithoutContext(' fails on failure', () async {
-      when(mockProcessManager.runSync(<String>['boohoo'])).thenReturn(
-        ProcessResult(0, 1, '', '')
-      );
+    testWithoutContext('fails on failure', () async {
+      processManager.addCommand(const FakeCommand(
+        command: <String>['boohoo'],
+        exitCode: 1,
+      ));
+
       expect(processUtils.exitsHappySync(<String>['boohoo']), isFalse);
     });
 
     testWithoutContext('catches Exception and returns false', () {
-      when(mockProcessManager.runSync(<String>['boohoo'])).thenThrow(
-        const ProcessException('Process failed', <String>[]),
-      );
+      processManager.addCommand(const FakeCommand(
+        command: <String>['boohoo'],
+        exception: ProcessException('Process failed', <String>[]),
+      ));
+
       expect(processUtils.exitsHappySync(<String>['boohoo']), isFalse);
     });
 
     testWithoutContext('does not throw Exception and returns false if binary cannot run', () {
-      mockProcessManager.canRunSucceeds = false;
+      processManager.excludedExecutables.add('nonesuch');
+
       expect(processUtils.exitsHappySync(<String>['nonesuch']), isFalse);
-      verifyNever(
-        mockProcessManager.runSync(any, environment: anyNamed('environment')),
-      );
     });
 
     testWithoutContext('does not catch ArgumentError', () async {
-      when(mockProcessManager.runSync(<String>['invalid'])).thenThrow(
-        ArgumentError('Bad input'),
-      );
+      processManager.addCommand(FakeCommand(
+        command: const <String>['invalid'],
+        exception: ArgumentError('Bad input'),
+      ));
+
       expect(
         () => processUtils.exitsHappySync(<String>['invalid']),
         throwsArgumentError,
@@ -456,50 +371,55 @@ void main() {
   });
 
   group('exitsHappy', () {
-    MockProcessManager mockProcessManager;
+    FakeProcessManager processManager;
     ProcessUtils processUtils;
 
     setUp(() {
-      mockProcessManager = MockProcessManager();
+      processManager = FakeProcessManager.empty();
       processUtils = ProcessUtils(
-        processManager: mockProcessManager,
+        processManager: processManager,
         logger: BufferLogger.test(),
       );
     });
 
     testWithoutContext('succeeds on success', () async {
-      when(mockProcessManager.run(<String>['whoohoo'])).thenAnswer((_) {
-        return Future<ProcessResult>.value(ProcessResult(0, 0, '', ''));
-      });
+      processManager.addCommand(const FakeCommand(
+        command: <String>['whoohoo']
+      ));
+
       expect(await processUtils.exitsHappy(<String>['whoohoo']), isTrue);
     });
 
     testWithoutContext('fails on failure', () async {
-      when(mockProcessManager.run(<String>['boohoo'])).thenAnswer((_) {
-        return Future<ProcessResult>.value(ProcessResult(0, 1, '', ''));
-      });
+      processManager.addCommand(const FakeCommand(
+        command: <String>['boohoo'],
+        exitCode: 1,
+      ));
+
       expect(await processUtils.exitsHappy(<String>['boohoo']), isFalse);
     });
 
     testWithoutContext('catches Exception and returns false', () async {
-      when(mockProcessManager.run(<String>['boohoo'])).thenThrow(
-        const ProcessException('Process failed', <String>[]),
-      );
+      processManager.addCommand(const FakeCommand(
+        command: <String>['boohoo'],
+        exception: ProcessException('Process failed', <String>[])
+      ));
+
       expect(await processUtils.exitsHappy(<String>['boohoo']), isFalse);
     });
 
     testWithoutContext('does not throw Exception and returns false if binary cannot run', () async {
-      mockProcessManager.canRunSucceeds = false;
+      processManager.excludedExecutables.add('nonesuch');
+
       expect(await processUtils.exitsHappy(<String>['nonesuch']), isFalse);
-      verifyNever(
-        mockProcessManager.runSync(any, environment: anyNamed('environment')),
-      );
     });
 
     testWithoutContext('does not catch ArgumentError', () async {
-      when(mockProcessManager.run(<String>['invalid'])).thenThrow(
-        ArgumentError('Bad input'),
-      );
+      processManager.addCommand(FakeCommand(
+        command: const <String>['invalid'],
+        exception: ArgumentError('Bad input')
+      ));
+
       expect(
         () async => processUtils.exitsHappy(<String>['invalid']),
         throwsArgumentError,
diff --git a/packages/flutter_tools/test/general.shard/build_system/targets/icon_tree_shaker_test.dart b/packages/flutter_tools/test/general.shard/build_system/targets/icon_tree_shaker_test.dart
index baabbb4940f..5088e2fa78e 100644
--- a/packages/flutter_tools/test/general.shard/build_system/targets/icon_tree_shaker_test.dart
+++ b/packages/flutter_tools/test/general.shard/build_system/targets/icon_tree_shaker_test.dart
@@ -4,21 +4,16 @@
 
 // @dart = 2.8
 
-import 'dart:convert';
-import 'dart:io' hide Directory, File;
-
 import 'package:file/memory.dart';
 import 'package:flutter_tools/src/artifacts.dart';
 import 'package:flutter_tools/src/base/file_system.dart';
 import 'package:flutter_tools/src/base/logger.dart';
 import 'package:flutter_tools/src/base/platform.dart';
-import 'package:flutter_tools/src/base/terminal.dart';
 import 'package:flutter_tools/src/build_info.dart';
 import 'package:flutter_tools/src/build_system/build_system.dart';
 import 'package:flutter_tools/src/build_system/targets/icon_tree_shaker.dart';
 import 'package:flutter_tools/src/devfs.dart';
 import 'package:meta/meta.dart';
-import 'package:mockito/mockito.dart';
 
 import '../../../src/common.dart';
 import '../../../src/fake_process_manager.dart';
@@ -34,8 +29,7 @@ const String relativePath = 'fonts/MaterialIcons-Regular.otf';
 void main() {
   BufferLogger logger;
   MemoryFileSystem fileSystem;
-  MockProcessManager mockProcessManager;
-  MockProcess fontSubsetProcess;
+  FakeProcessManager processManager;
   Artifacts artifacts;
   DevFSStringContent fontManifestContent;
 
@@ -59,9 +53,12 @@ void main() {
     String stdout = '',
     String stderr = '',
   }) {
-    when(mockProcessManager.run(_getConstFinderArgs(appDillPath))).thenAnswer((_) async {
-      return ProcessResult(0, exitCode, stdout, stderr);
-    });
+    processManager.addCommand(FakeCommand(
+      command: _getConstFinderArgs(appDillPath),
+      exitCode: exitCode,
+      stdout: stdout,
+      stderr: stderr,
+    ));
   }
 
   void _resetFontSubsetInvocation({
@@ -72,30 +69,21 @@ void main() {
   }) {
     assert(stdinSink != null);
     stdinSink.clear();
-    when(fontSubsetProcess.exitCode).thenAnswer((_) async => exitCode);
-    when(fontSubsetProcess.stdout).thenAnswer((_) => Stream<List<int>>.fromIterable(<List<int>>[utf8.encode(stdout)]));
-    when(fontSubsetProcess.stderr).thenAnswer((_) => Stream<List<int>>.fromIterable(<List<int>>[utf8.encode(stderr)]));
-    when(fontSubsetProcess.stdin).thenReturn(stdinSink);
-    when(mockProcessManager.start(fontSubsetArgs)).thenAnswer((_) async {
-      return fontSubsetProcess;
-    });
+    processManager.addCommand(FakeCommand(
+      command: fontSubsetArgs,
+      exitCode: exitCode,
+      stdout: stdout,
+      stderr: stderr,
+      stdin: stdinSink,
+    ));
   }
 
   setUp(() {
+    processManager = FakeProcessManager.empty();
     fontManifestContent = DevFSStringContent(validFontManifestJson);
-
-    mockProcessManager = MockProcessManager();
-    fontSubsetProcess = MockProcess();
     artifacts = Artifacts.test();
     fileSystem = MemoryFileSystem.test();
-    logger = BufferLogger(
-      terminal: AnsiTerminal(
-        stdio: FakeStdio(),
-        platform: kNoAnsiPlatform,
-      ),
-      outputPreferences: OutputPreferences.test(showColor: false),
-    );
-
+    logger = BufferLogger.test();
     dartPath = artifacts.getHostArtifact(HostArtifact.engineDartBinary).path;
     constFinderPath = artifacts.getArtifactPath(Artifact.constFinder);
     fontSubsetPath = artifacts.getArtifactPath(Artifact.fontSubset);
@@ -135,7 +123,7 @@ void main() {
       environment,
       fontManifestContent,
       logger: logger,
-      processManager: mockProcessManager,
+      processManager: processManager,
       fileSystem: fileSystem,
       artifacts: artifacts,
     );
@@ -153,9 +141,7 @@ void main() {
       relativePath: relativePath,
     );
     expect(subsets, false);
-
-    verifyNever(mockProcessManager.run(any));
-    verifyNever(mockProcessManager.start(any));
+    expect(processManager, hasNoRemainingExpectations);
   });
 
   testWithoutContext('Does not get enabled without font manifest', () {
@@ -168,7 +154,7 @@ void main() {
       environment,
       null,
       logger: logger,
-      processManager: mockProcessManager,
+      processManager: processManager,
       fileSystem: fileSystem,
       artifacts: artifacts,
     );
@@ -178,8 +164,7 @@ void main() {
       isEmpty,
     );
     expect(iconTreeShaker.enabled, false);
-    verifyNever(mockProcessManager.run(any));
-    verifyNever(mockProcessManager.start(any));
+    expect(processManager, hasNoRemainingExpectations);
   });
 
   testWithoutContext('Gets enabled', () {
@@ -192,7 +177,7 @@ void main() {
       environment,
       fontManifestContent,
       logger: logger,
-      processManager: mockProcessManager,
+      processManager: processManager,
       fileSystem: fileSystem,
       artifacts: artifacts,
     );
@@ -202,8 +187,7 @@ void main() {
       isEmpty,
     );
     expect(iconTreeShaker.enabled, true);
-    verifyNever(mockProcessManager.run(any));
-    verifyNever(mockProcessManager.start(any));
+    expect(processManager, hasNoRemainingExpectations);
   });
 
   test('No app.dill throws exception', () async {
@@ -216,7 +200,7 @@ void main() {
       environment,
       fontManifestContent,
       logger: logger,
-      processManager: mockProcessManager,
+      processManager: processManager,
       fileSystem: fileSystem,
       artifacts: artifacts,
     );
@@ -229,6 +213,7 @@ void main() {
       ),
       throwsA(isA<IconTreeShakerException>()),
     );
+    expect(processManager, hasNoRemainingExpectations);
   });
 
   testWithoutContext('Can subset a font', () async {
@@ -243,7 +228,7 @@ void main() {
       environment,
       fontManifestContent,
       logger: logger,
-      processManager: mockProcessManager,
+      processManager: processManager,
       fileSystem: fileSystem,
       artifacts: artifacts,
     );
@@ -268,9 +253,7 @@ void main() {
     );
     expect(subsetted, true);
     expect(stdinSink.getAndClear(), '59470\n');
-
-    verify(mockProcessManager.run(_getConstFinderArgs(appDill.path))).called(1);
-    verify(mockProcessManager.start(fontSubsetArgs)).called(2);
+    expect(processManager, hasNoRemainingExpectations);
   });
 
   testWithoutContext('Does not subset a non-supported font', () async {
@@ -285,7 +268,7 @@ void main() {
       environment,
       fontManifestContent,
       logger: logger,
-      processManager: mockProcessManager,
+      processManager: processManager,
       fileSystem: fileSystem,
       artifacts: artifacts,
     );
@@ -303,9 +286,6 @@ void main() {
       relativePath: relativePath,
     );
     expect(subsetted, false);
-
-    verifyNever(mockProcessManager.run(_getConstFinderArgs(appDill.path)));
-    verifyNever(mockProcessManager.start(fontSubsetArgs));
   });
 
   testWithoutContext('Does not subset an invalid ttf font', () async {
@@ -320,7 +300,7 @@ void main() {
       environment,
       fontManifestContent,
       logger: logger,
-      processManager: mockProcessManager,
+      processManager: processManager,
       fileSystem: fileSystem,
       artifacts: artifacts,
     );
@@ -338,8 +318,6 @@ void main() {
     );
 
     expect(subsetted, false);
-    verifyNever(mockProcessManager.run(_getConstFinderArgs(appDill.path)));
-    verifyNever(mockProcessManager.start(fontSubsetArgs));
   });
 
   testWithoutContext('Non-constant instances', () async {
@@ -354,7 +332,7 @@ void main() {
       environment,
       fontManifestContent,
       logger: logger,
-      processManager: mockProcessManager,
+      processManager: processManager,
       fileSystem: fileSystem,
       artifacts: artifacts,
     );
@@ -362,7 +340,7 @@ void main() {
     _addConstFinderInvocation(appDill.path, stdout: constFinderResultWithInvalid);
 
     await expectLater(
-      () async => iconTreeShaker.subsetFont(
+      () => iconTreeShaker.subsetFont(
         input: fileSystem.file(inputPath),
         outputPath: outputPath,
         relativePath: relativePath,
@@ -373,9 +351,7 @@ void main() {
           ' again with --no-tree-shake-icons.',
       ),
     );
-
-    verify(mockProcessManager.run(_getConstFinderArgs(appDill.path))).called(1);
-    verifyNever(mockProcessManager.start(fontSubsetArgs));
+    expect(processManager, hasNoRemainingExpectations);
   });
 
   testWithoutContext('Non-zero font-subset exit code', () async {
@@ -391,7 +367,7 @@ void main() {
       environment,
       fontManifestContent,
       logger: logger,
-      processManager: mockProcessManager,
+      processManager: processManager,
       fileSystem: fileSystem,
       artifacts: artifacts,
     );
@@ -401,16 +377,14 @@ void main() {
     _resetFontSubsetInvocation(exitCode: -1, stdinSink: stdinSink);
 
     await expectLater(
-      () async => iconTreeShaker.subsetFont(
+      () => iconTreeShaker.subsetFont(
         input: fileSystem.file(inputPath),
         outputPath: outputPath,
         relativePath: relativePath,
       ),
       throwsA(isA<IconTreeShakerException>()),
     );
-
-    verify(mockProcessManager.run(_getConstFinderArgs(appDill.path))).called(1);
-    verify(mockProcessManager.start(fontSubsetArgs)).called(1);
+    expect(processManager, hasNoRemainingExpectations);
   });
 
   testWithoutContext('font-subset throws on write to sdtin', () async {
@@ -425,7 +399,7 @@ void main() {
       environment,
       fontManifestContent,
       logger: logger,
-      processManager: mockProcessManager,
+      processManager: processManager,
       fileSystem: fileSystem,
       artifacts: artifacts,
     );
@@ -435,16 +409,14 @@ void main() {
     _resetFontSubsetInvocation(exitCode: -1, stdinSink: stdinSink);
 
     await expectLater(
-      () async => iconTreeShaker.subsetFont(
+      () => iconTreeShaker.subsetFont(
         input: fileSystem.file(inputPath),
         outputPath: outputPath,
         relativePath: relativePath,
       ),
       throwsA(isA<IconTreeShakerException>()),
     );
-
-    verify(mockProcessManager.run(_getConstFinderArgs(appDill.path))).called(1);
-    verify(mockProcessManager.start(fontSubsetArgs)).called(1);
+    expect(processManager, hasNoRemainingExpectations);
   });
 
   testWithoutContext('Invalid font manifest', () async {
@@ -461,7 +433,7 @@ void main() {
       environment,
       fontManifestContent,
       logger: logger,
-      processManager: mockProcessManager,
+      processManager: processManager,
       fileSystem: fileSystem,
       artifacts: artifacts,
     );
@@ -469,16 +441,14 @@ void main() {
     _addConstFinderInvocation(appDill.path, stdout: validConstFinderResult);
 
     await expectLater(
-      () async => iconTreeShaker.subsetFont(
+      () => iconTreeShaker.subsetFont(
         input: fileSystem.file(inputPath),
         outputPath: outputPath,
         relativePath: relativePath,
       ),
       throwsA(isA<IconTreeShakerException>()),
     );
-
-    verify(mockProcessManager.run(_getConstFinderArgs(appDill.path))).called(1);
-    verifyNever(mockProcessManager.start(fontSubsetArgs));
+    expect(processManager, hasNoRemainingExpectations);
   });
 
   testWithoutContext('ConstFinder non-zero exit', () async {
@@ -495,7 +465,7 @@ void main() {
       environment,
       fontManifestContent,
       logger: logger,
-      processManager: mockProcessManager,
+      processManager: processManager,
       fileSystem: fileSystem,
       artifacts: artifacts,
     );
@@ -510,9 +480,7 @@ void main() {
       ),
       throwsA(isA<IconTreeShakerException>()),
     );
-
-    verify(mockProcessManager.run(_getConstFinderArgs(appDill.path))).called(1);
-    verifyNever(mockProcessManager.start(fontSubsetArgs));
+    expect(processManager, hasNoRemainingExpectations);
   });
 }
 
@@ -589,6 +557,3 @@ const String invalidFontManifestJson = '''
   ]
 }
 ''';
-
-class MockProcessManager extends Mock implements ProcessManager {}
-class MockProcess extends Mock implements Process {}
diff --git a/packages/flutter_tools/test/general.shard/ios/ios_device_start_prebuilt_test.dart b/packages/flutter_tools/test/general.shard/ios/ios_device_start_prebuilt_test.dart
index 35e835146cb..7fcf1bf466b 100644
--- a/packages/flutter_tools/test/general.shard/ios/ios_device_start_prebuilt_test.dart
+++ b/packages/flutter_tools/test/general.shard/ios/ios_device_start_prebuilt_test.dart
@@ -20,7 +20,7 @@ import 'package:flutter_tools/src/ios/devices.dart';
 import 'package:flutter_tools/src/ios/ios_deploy.dart';
 import 'package:flutter_tools/src/ios/iproxy.dart';
 import 'package:flutter_tools/src/ios/mac.dart';
-import 'package:mockito/mockito.dart';
+import 'package:test/fake.dart';
 
 import '../../src/common.dart';
 import '../../src/fake_devices.dart';
@@ -86,12 +86,10 @@ stdout: '(lldb)     run\nsuccess',
 );
 
 void main() {
-  // TODO(jonahwilliams): This test doesn't really belong here but
-  // I don't have a better place for it for now.
   testWithoutContext('disposing device disposes the portForwarder and logReader', () async {
     final IOSDevice device = setUpIOSDevice();
-    final DevicePortForwarder devicePortForwarder = MockDevicePortForwarder();
-    final DeviceLogReader deviceLogReader = MockDeviceLogReader();
+    final FakeDevicePortForwarder devicePortForwarder = FakeDevicePortForwarder();
+    final FakeDeviceLogReader deviceLogReader = FakeDeviceLogReader();
     final IOSApp iosApp = PrebuiltIOSApp(
       projectBundleId: 'app',
       bundleName: 'Runner',
@@ -101,8 +99,8 @@ void main() {
     device.setLogReader(iosApp, deviceLogReader);
     await device.dispose();
 
-    verify(deviceLogReader.dispose()).called(1);
-    verify(devicePortForwarder.dispose()).called(1);
+    expect(deviceLogReader.disposed, true);
+    expect(devicePortForwarder.disposed, true);
   });
 
   testWithoutContext('IOSDevice.startApp attaches in debug mode via log reading on iOS 13+', () async {
@@ -384,5 +382,11 @@ IOSDevice setUpIOSDevice({
   );
 }
 
-class MockDevicePortForwarder extends Mock implements DevicePortForwarder {}
-class MockDeviceLogReader extends Mock implements DeviceLogReader {}
+class FakeDevicePortForwarder extends Fake implements DevicePortForwarder {
+  bool disposed = false;
+
+  @override
+  Future<void> dispose() async {
+    disposed = true;
+  }
+}
diff --git a/packages/flutter_tools/test/general.shard/ios/xcodeproj_test.dart b/packages/flutter_tools/test/general.shard/ios/xcodeproj_test.dart
index 94c3ed46a5f..e8611adafb3 100644
--- a/packages/flutter_tools/test/general.shard/ios/xcodeproj_test.dart
+++ b/packages/flutter_tools/test/general.shard/ios/xcodeproj_test.dart
@@ -16,55 +16,17 @@ import 'package:flutter_tools/src/ios/xcode_build_settings.dart';
 import 'package:flutter_tools/src/ios/xcodeproj.dart';
 import 'package:flutter_tools/src/project.dart';
 import 'package:flutter_tools/src/reporting/reporting.dart';
-import 'package:mockito/mockito.dart';
 
 import '../../src/common.dart';
 import '../../src/context.dart';
-import '../../src/mocks.dart' as mocks;
 
 const String xcodebuild = '/usr/bin/xcodebuild';
 
 void main() {
   group('MockProcessManager', () {
-    mocks.MockProcessManager processManager;
-    XcodeProjectInterpreter xcodeProjectInterpreter;
-    FakePlatform platform;
-    BufferLogger logger;
-
     setUp(() {
-      processManager = mocks.MockProcessManager();
-      platform = FakePlatform(operatingSystem: 'macos');
       final FileSystem fileSystem = MemoryFileSystem.test();
       fileSystem.file(xcodebuild).createSync(recursive: true);
-      logger = BufferLogger.test();
-      xcodeProjectInterpreter = XcodeProjectInterpreter(
-        logger: logger,
-        fileSystem: fileSystem,
-        platform: platform,
-        processManager: processManager,
-        usage: null,
-      );
-    });
-
-    testUsingContext('xcodebuild build settings flakes', () async {
-      const Duration delay = Duration(seconds: 1);
-      processManager.processFactory = mocks.flakyProcessFactory(
-        flakes: 1,
-        delay: delay + const Duration(seconds: 1),
-      );
-      platform.environment = const <String, String>{};
-
-      when(processManager.runSync(<String>['which', 'sysctl']))
-          .thenReturn(ProcessResult(0, 0, '', ''));
-      when(processManager.runSync(<String>['sysctl', 'hw.optional.arm64']))
-          .thenReturn(ProcessResult(0, 1, '', ''));
-
-      expect(await xcodeProjectInterpreter.getBuildSettings('', buildContext: const XcodeProjectBuildContext(scheme: 'Runner'), timeout: delay),
-        const <String, String>{});
-      // build settings times out and is killed once, then succeeds.
-      verify(processManager.killPid(any)).called(1);
-      // The verbose logs should tell us something timed out.
-      expect(logger.traceText, contains('timed out'));
     });
   });
 
diff --git a/packages/flutter_tools/test/general.shard/resident_web_runner_cold_test.dart b/packages/flutter_tools/test/general.shard/resident_web_runner_cold_test.dart
index cdd90541e6e..df50558d9ec 100644
--- a/packages/flutter_tools/test/general.shard/resident_web_runner_cold_test.dart
+++ b/packages/flutter_tools/test/general.shard/resident_web_runner_cold_test.dart
@@ -7,66 +7,60 @@
 import 'dart:async';
 
 import 'package:file/memory.dart';
+import 'package:flutter_tools/src/application_package.dart';
 import 'package:flutter_tools/src/base/common.dart';
 import 'package:flutter_tools/src/base/file_system.dart';
 import 'package:flutter_tools/src/base/logger.dart';
+import 'package:flutter_tools/src/base/time.dart';
 import 'package:flutter_tools/src/build_info.dart';
 import 'package:flutter_tools/src/build_system/build_system.dart';
+import 'package:flutter_tools/src/devfs.dart';
 import 'package:flutter_tools/src/device.dart';
-import 'package:flutter_tools/src/globals_null_migrated.dart' as globals;
 import 'package:flutter_tools/src/isolated/devfs_web.dart';
 import 'package:flutter_tools/src/isolated/resident_web_runner.dart';
 import 'package:flutter_tools/src/project.dart';
+import 'package:flutter_tools/src/reporting/reporting.dart';
 import 'package:flutter_tools/src/resident_runner.dart';
-import 'package:flutter_tools/src/web/chrome.dart';
-import 'package:flutter_tools/src/web/web_device.dart';
-import 'package:mockito/mockito.dart';
-import 'package:webkit_inspection_protocol/webkit_inspection_protocol.dart';
+import 'package:flutter_tools/src/vmservice.dart';
+import 'package:test/fake.dart';
 
 import '../src/common.dart';
 import '../src/context.dart';
-import '../src/fakes.dart';
 import '../src/test_build_system.dart';
 
 void main() {
-  ResidentWebRunner residentWebRunner;
-  MockFlutterDevice mockFlutterDevice;
-  MockWebDevFS mockWebDevFS;
+  FakeFlutterDevice mockFlutterDevice;
+  FakeWebDevFS mockWebDevFS;
+  FileSystem fileSystem;
 
   setUp(() {
-    mockWebDevFS = MockWebDevFS();
-    final MockWebDevice mockWebDevice = MockWebDevice();
-    mockFlutterDevice = MockFlutterDevice();
-    when(mockFlutterDevice.device).thenReturn(mockWebDevice);
-    when(mockFlutterDevice.devFS).thenReturn(mockWebDevFS);
-    when(mockWebDevFS.sources).thenReturn(<Uri>[]);
+    fileSystem = MemoryFileSystem.test();
+    mockWebDevFS = FakeWebDevFS();
+    final FakeWebDevice mockWebDevice = FakeWebDevice();
+    mockFlutterDevice = FakeFlutterDevice(mockWebDevice);
+    mockFlutterDevice._devFS = mockWebDevFS;
+
+    fileSystem.file('.packages').writeAsStringSync('\n');
+    fileSystem.file('pubspec.yaml').createSync();
+    fileSystem.file(fileSystem.path.join('lib', 'main.dart')).createSync(recursive: true);
+    fileSystem.file(fileSystem.path.join('web', 'index.html')).createSync(recursive: true);
   });
 
-  void _setupMocks() {
-    globals.fs.file('.packages').writeAsStringSync('\n');
-    globals.fs.file('pubspec.yaml').createSync();
-    globals.fs.file(globals.fs.path.join('lib', 'main.dart')).createSync(recursive: true);
-    globals.fs.file(globals.fs.path.join('web', 'index.html')).createSync(recursive: true);
-    final FlutterProject project = FlutterProject.fromDirectoryTest(globals.fs.currentDirectory);
-    residentWebRunner = ResidentWebRunner(
+  testUsingContext('Can successfully run and connect without vmservice', () async {
+    final FlutterProject project = FlutterProject.fromDirectoryTest(fileSystem.currentDirectory);
+    final ResidentWebRunner residentWebRunner = ResidentWebRunner(
       mockFlutterDevice,
       flutterProject: project,
       debuggingOptions: DebuggingOptions.disabled(BuildInfo.release),
       ipv6: true,
       stayResident: true,
       urlTunneller: null,
-      fileSystem: globals.fs,
-      logger: globals.logger,
-      systemClock: globals.systemClock,
-      usage: globals.flutterUsage,
+      fileSystem: fileSystem,
+      logger: BufferLogger.test(),
+      systemClock: SystemClock.fixed(DateTime(0, 0, 0)),
+      usage: TestUsage(),
     );
-  }
 
-  testUsingContext('Can successfully run and connect without vmservice', () async {
-    _setupMocks();
-    final FakeStatusLogger fakeStatusLogger = globals.logger as FakeStatusLogger;
-    final MockStatus mockStatus = MockStatus();
-    fakeStatusLogger.status = mockStatus;
     final Completer<DebugConnectionInfo> connectionInfoCompleter = Completer<DebugConnectionInfo>();
     unawaited(residentWebRunner.run(
       connectionInfoCompleter: connectionInfoCompleter,
@@ -74,40 +68,74 @@ void main() {
     final DebugConnectionInfo debugConnectionInfo = await connectionInfoCompleter.future;
 
     expect(debugConnectionInfo.wsUri, null);
-    verify(mockStatus.stop()).called(1);
   }, overrides: <Type, Generator>{
     BuildSystem: () => TestBuildSystem.all(BuildResult(success: true)),
-    Logger: () => FakeStatusLogger(BufferLogger.test()),
-    FileSystem: () => MemoryFileSystem.test(),
+    FileSystem: () => fileSystem,
     ProcessManager: () => FakeProcessManager.any(),
   });
 
   // Regression test for https://github.com/flutter/flutter/issues/60613
   testUsingContext('ResidentWebRunner calls appFailedToStart if initial compilation fails', () async {
-    _setupMocks();
+    final FlutterProject project = FlutterProject.fromDirectoryTest(fileSystem.currentDirectory);
+    final ResidentWebRunner residentWebRunner = ResidentWebRunner(
+      mockFlutterDevice,
+      flutterProject: project,
+      debuggingOptions: DebuggingOptions.disabled(BuildInfo.release),
+      ipv6: true,
+      stayResident: true,
+      urlTunneller: null,
+      fileSystem: fileSystem,
+      logger: BufferLogger.test(),
+      systemClock: SystemClock.fixed(DateTime(0, 0, 0)),
+      usage: TestUsage(),
+    );
 
-    expect(() async => residentWebRunner.run(), throwsToolExit());
+    expect(() => residentWebRunner.run(), throwsToolExit());
     expect(await residentWebRunner.waitForAppToFinish(), 1);
   }, overrides: <Type, Generator>{
     BuildSystem: () => TestBuildSystem.all(BuildResult(success: false)),
-    FileSystem: () => MemoryFileSystem.test(),
+    FileSystem: () => fileSystem,
     ProcessManager: () => FakeProcessManager.any(),
   });
 
   // Regression test for https://github.com/flutter/flutter/issues/60613
   testUsingContext('ResidentWebRunner calls appFailedToStart if error is thrown during startup', () async {
-    _setupMocks();
+    final FlutterProject project = FlutterProject.fromDirectoryTest(fileSystem.currentDirectory);
+    final ResidentWebRunner residentWebRunner = ResidentWebRunner(
+      mockFlutterDevice,
+      flutterProject: project,
+      debuggingOptions: DebuggingOptions.disabled(BuildInfo.release),
+      ipv6: true,
+      stayResident: true,
+      urlTunneller: null,
+      fileSystem: fileSystem,
+      logger: BufferLogger.test(),
+      systemClock: SystemClock.fixed(DateTime(0, 0, 0)),
+      usage: TestUsage(),
+    );
 
     expect(() async => residentWebRunner.run(), throwsA(isA<Exception>()));
     expect(await residentWebRunner.waitForAppToFinish(), 1);
   }, overrides: <Type, Generator>{
     BuildSystem: () => TestBuildSystem.error(Exception('foo')),
-    FileSystem: () => MemoryFileSystem.test(),
+    FileSystem: () => fileSystem,
     ProcessManager: () => FakeProcessManager.any(),
   });
 
   testUsingContext('Can full restart after attaching', () async {
-    _setupMocks();
+    final FlutterProject project = FlutterProject.fromDirectoryTest(fileSystem.currentDirectory);
+    final ResidentWebRunner residentWebRunner = ResidentWebRunner(
+      mockFlutterDevice,
+      flutterProject: project,
+      debuggingOptions: DebuggingOptions.disabled(BuildInfo.release),
+      ipv6: true,
+      stayResident: true,
+      urlTunneller: null,
+      fileSystem: fileSystem,
+      logger: BufferLogger.test(),
+      systemClock: SystemClock.fixed(DateTime(0, 0, 0)),
+      usage: TestUsage(),
+    );
     final Completer<DebugConnectionInfo> connectionInfoCompleter = Completer<DebugConnectionInfo>();
     unawaited(residentWebRunner.run(
       connectionInfoCompleter: connectionInfoCompleter,
@@ -118,12 +146,24 @@ void main() {
     expect(result.code, 0);
   }, overrides: <Type, Generator>{
     BuildSystem: () => TestBuildSystem.all(BuildResult(success: true)),
-    FileSystem: () => MemoryFileSystem.test(),
+    FileSystem: () => fileSystem,
     ProcessManager: () => FakeProcessManager.any(),
   });
 
   testUsingContext('Fails on compilation errors in hot restart', () async {
-    _setupMocks();
+    final FlutterProject project = FlutterProject.fromDirectoryTest(fileSystem.currentDirectory);
+    final ResidentWebRunner residentWebRunner = ResidentWebRunner(
+      mockFlutterDevice,
+      flutterProject: project,
+      debuggingOptions: DebuggingOptions.disabled(BuildInfo.release),
+      ipv6: true,
+      stayResident: true,
+      urlTunneller: null,
+      fileSystem: fileSystem,
+      logger: BufferLogger.test(),
+      systemClock: SystemClock.fixed(DateTime(0, 0, 0)),
+      usage: TestUsage(),
+    );
     final Completer<DebugConnectionInfo> connectionInfoCompleter = Completer<DebugConnectionInfo>();
     unawaited(residentWebRunner.run(
       connectionInfoCompleter: connectionInfoCompleter,
@@ -138,55 +178,63 @@ void main() {
       BuildResult(success: true),
       BuildResult(success: false),
     ]),
-    FileSystem: () => MemoryFileSystem.test(),
-    ProcessManager: () => FakeProcessManager.any(),
-  });
-
-  testUsingContext('Correctly performs a full refresh on attached chrome device.', () async {
-    _setupMocks();
-    final MockChromeDevice chromeDevice = MockChromeDevice();
-    final MockChrome chrome = MockChrome();
-    final MockChromeConnection mockChromeConnection = MockChromeConnection();
-    final MockChromeTab mockChromeTab = MockChromeTab();
-    final MockWipConnection mockWipConnection = MockWipConnection();
-    final MockChromiumLauncher chromiumLauncher = MockChromiumLauncher();
-    when(mockChromeConnection.getTab(any)).thenAnswer((Invocation invocation) async {
-      return mockChromeTab;
-    });
-    when(mockChromeTab.connect()).thenAnswer((Invocation invocation) async {
-      return mockWipConnection;
-    });
-    when(chromiumLauncher.connectedInstance).thenAnswer((Invocation invocation) async {
-      return chrome;
-    });
-    when(chrome.chromeConnection).thenReturn(mockChromeConnection);
-    when(chromeDevice.chromeLauncher).thenReturn(chromiumLauncher);
-    when(mockFlutterDevice.device).thenReturn(chromeDevice);
-    final Completer<DebugConnectionInfo> connectionInfoCompleter = Completer<DebugConnectionInfo>();
-    unawaited(residentWebRunner.run(
-      connectionInfoCompleter: connectionInfoCompleter,
-    ));
-    await connectionInfoCompleter.future;
-    final OperationResult result = await residentWebRunner.restart(fullRestart: true);
-
-    expect(result.code, 0);
-    verify(mockWipConnection.sendCommand('Page.reload', <String, Object>{
-      'ignoreCache': true,
-    })).called(1);
-  }, overrides: <Type, Generator>{
-    BuildSystem: () => TestBuildSystem.all(BuildResult(success: true)),
-    FileSystem: () => MemoryFileSystem.test(),
+    FileSystem: () => fileSystem,
     ProcessManager: () => FakeProcessManager.any(),
   });
 }
 
-class MockWebDevFS extends Mock implements WebDevFS {}
-class MockWebDevice extends Mock implements Device {}
-class MockStatus extends Mock implements Status {}
-class MockFlutterDevice extends Mock implements FlutterDevice {}
-class MockChromeDevice extends Mock implements ChromiumDevice {}
-class MockChrome extends Mock implements Chromium {}
-class MockChromeConnection extends Mock implements ChromeConnection {}
-class MockChromeTab extends Mock implements ChromeTab {}
-class MockWipConnection extends Mock implements WipConnection {}
-class MockChromiumLauncher extends Mock implements ChromiumLauncher {}
+class FakeWebDevFS extends Fake implements WebDevFS {
+  @override
+  List<Uri> get sources => <Uri>[];
+
+  @override
+  Future<Uri> create() async {
+    return Uri.base;
+  }
+}
+
+class FakeWebDevice extends Fake implements Device {
+  @override
+  String get name => 'web';
+
+  @override
+  Future<bool> stopApp(
+    covariant ApplicationPackage app, {
+    String userIdentifier,
+  }) async {
+    return true;
+  }
+
+  @override
+  Future<LaunchResult> startApp(
+    covariant ApplicationPackage package, {
+    String mainPath,
+    String route,
+    DebuggingOptions debuggingOptions,
+    Map<String, dynamic> platformArgs,
+    bool prebuiltApplication = false,
+    bool ipv6 = false,
+    String userIdentifier,
+  }) async {
+    return LaunchResult.succeeded();
+  }
+}
+
+class FakeFlutterDevice extends Fake implements FlutterDevice {
+  FakeFlutterDevice(this.device);
+
+  @override
+  final FakeWebDevice device;
+
+
+  DevFS _devFS;
+
+  @override
+  DevFS get devFS => _devFS;
+
+  @override
+  set devFS(DevFS value) { }
+
+  @override
+  FlutterVmService vmService;
+}
diff --git a/packages/flutter_tools/test/src/fake_devices.dart b/packages/flutter_tools/test/src/fake_devices.dart
index 2c24c2ff790..5bf0f714c05 100644
--- a/packages/flutter_tools/test/src/fake_devices.dart
+++ b/packages/flutter_tools/test/src/fake_devices.dart
@@ -184,6 +184,8 @@ class FakeDeviceLogReader extends DeviceLogReader {
 
   StreamController<String> _cachedLinesController;
 
+  bool disposed = false;
+
   final List<String> _lineQueue = <String>[];
   StreamController<String> get _linesController {
     _cachedLinesController ??= StreamController<String>
@@ -209,5 +211,6 @@ class FakeDeviceLogReader extends DeviceLogReader {
   Future<void> dispose() async {
     _lineQueue.clear();
     await _linesController.close();
+    disposed = true;
   }
 }
diff --git a/packages/flutter_tools/test/src/mocks.dart b/packages/flutter_tools/test/src/mocks.dart
deleted file mode 100644
index 479a3559115..00000000000
--- a/packages/flutter_tools/test/src/mocks.dart
+++ /dev/null
@@ -1,88 +0,0 @@
-// 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.
-
-// @dart = 2.8
-
-import 'dart:async';
-
-import 'package:flutter_tools/src/base/io.dart';
-import 'package:mockito/mockito.dart';
-import 'package:process/process.dart';
-
-import 'fakes.dart';
-
-/// A strategy for creating Process objects from a list of commands.
-typedef _ProcessFactory = Process Function(List<String> command);
-
-/// A ProcessManager that starts Processes by delegating to a ProcessFactory.
-class MockProcessManager extends Mock implements ProcessManager {
-  _ProcessFactory processFactory = _defaulProcessFactory;
-  bool canRunSucceeds = true;
-  bool runSucceeds = true;
-  List<String> commands;
-
-  static Process _defaulProcessFactory(List<String> commands) => FakeProcess();
-
-  @override
-  bool canRun(dynamic command, { String workingDirectory }) => canRunSucceeds;
-
-  @override
-  Future<Process> start(
-    List<dynamic> command, {
-    String workingDirectory,
-    Map<String, String> environment,
-    bool includeParentEnvironment = true,
-    bool runInShell = false,
-    ProcessStartMode mode = ProcessStartMode.normal,
-  }) {
-    final List<String> commands = command.cast<String>();
-    if (!runSucceeds) {
-      final String executable = commands[0];
-      final List<String> arguments = commands.length > 1 ? commands.sublist(1) : <String>[];
-      throw ProcessException(executable, arguments);
-    }
-
-    this.commands = commands;
-    return Future<Process>.value(processFactory(commands));
-  }
-}
-
-/// A function that generates a process factory that gives processes that fail
-/// a given number of times before succeeding. The returned processes will
-/// fail after a delay if one is supplied.
-_ProcessFactory flakyProcessFactory({
-  int flakes,
-  bool Function(List<String> command) filter,
-  Duration delay,
-  Stream<List<int>> Function() stdout,
-  Stream<List<int>> Function() stderr,
-}) {
-  int flakesLeft = flakes;
-  stdout ??= () => const Stream<List<int>>.empty();
-  stderr ??= () => const Stream<List<int>>.empty();
-  return (List<String> command) {
-    if (filter != null && !filter(command)) {
-      return FakeProcess();
-    }
-    if (flakesLeft == 0) {
-      return FakeProcess(
-        exitCode: Future<int>.value(0),
-        stdout: stdout(),
-        stderr: stderr(),
-      );
-    }
-    flakesLeft = flakesLeft - 1;
-    Future<int> exitFuture;
-    if (delay == null) {
-      exitFuture = Future<int>.value(-9);
-    } else {
-      exitFuture = Future<int>.delayed(delay, () => Future<int>.value(-9));
-    }
-    return FakeProcess(
-      exitCode: exitFuture,
-      stdout: stdout(),
-      stderr: stderr(),
-    );
-  };
-}