packages/flutter_tools/test/general.shard/cache_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 'package:collection/collection.dart' show IterableExtension;
import 'package:file/file.dart';
import 'package:file/memory.dart';
import 'package:file_testing/file_testing.dart';
import 'package:flutter_tools/src/android/android_sdk.dart';
import 'package:flutter_tools/src/base/file_system.dart';
import 'package:flutter_tools/src/base/io.dart';
import 'package:flutter_tools/src/base/logger.dart';
import 'package:flutter_tools/src/base/os.dart';
import 'package:flutter_tools/src/base/platform.dart';
import 'package:flutter_tools/src/cache.dart';
import 'package:flutter_tools/src/dart/pub.dart';
import 'package:flutter_tools/src/flutter_cache.dart';
import 'package:flutter_tools/src/globals.dart' as globals;
import 'package:flutter_tools/src/project.dart';
import 'package:test/fake.dart';

import '../src/common.dart';
import '../src/context.dart';
import '../src/fakes.dart';

const unameCommandForX64 = FakeCommand(command: <String>['uname', '-m'], stdout: 'x86_64');

const unameCommandForArm64 = FakeCommand(command: <String>['uname', '-m'], stdout: 'aarch64');

void main() {
  late FakeProcessManager fakeProcessManager;

  setUp(() {
    fakeProcessManager = FakeProcessManager.empty();
  });

  Cache createCache(Platform platform) {
    return Cache.test(platform: platform, processManager: fakeProcessManager);
  }

  group('Cache.checkLockAcquired', () {
    setUp(() {
      Cache.enableLocking();
    });

    tearDown(() {
      // Restore locking to prevent potential side-effects in
      // tests outside this group (this option is globally shared).
      Cache.enableLocking();
    });

    testWithoutContext('should throw when locking is not acquired', () {
      final cache = Cache.test(processManager: FakeProcessManager.any());

      expect(cache.checkLockAcquired, throwsStateError);
    });

    testWithoutContext('should not throw when locking is disabled', () {
      final cache = Cache.test(processManager: FakeProcessManager.any());
      Cache.disableLocking();

      expect(cache.checkLockAcquired, returnsNormally);
    });

    testWithoutContext('should not throw when lock is acquired', () async {
      final String? oldRoot = Cache.flutterRoot;
      Cache.flutterRoot = '';
      try {
        final FileSystem fileSystem = MemoryFileSystem.test();
        final cache = Cache.test(fileSystem: fileSystem, processManager: FakeProcessManager.any());
        fileSystem
            .file(fileSystem.path.join('bin', 'cache', 'lockfile'))
            .createSync(recursive: true);

        await cache.lock();

        expect(cache.checkLockAcquired, returnsNormally);
        expect(cache.releaseLock, returnsNormally);
      } finally {
        Cache.flutterRoot = oldRoot;
      }
      // TODO(zanderso): implement support for lock so this can be tested with the memory file system.
    }, skip: true); // https://github.com/flutter/flutter/issues/87923

    testWithoutContext('throws tool exit when lockfile open fails', () async {
      final FileSystem fileSystem = MemoryFileSystem.test();
      final cache = Cache.test(fileSystem: fileSystem, processManager: FakeProcessManager.any());
      fileSystem.file(fileSystem.path.join('bin', 'cache', 'lockfile')).createSync(recursive: true);

      expect(() async => cache.lock(), throwsToolExit());
      // TODO(zanderso): implement support for lock so this can be tested with the memory file system.
    }, skip: true); // https://github.com/flutter/flutter/issues/87923

    testWithoutContext('should not throw when FLUTTER_ALREADY_LOCKED is set', () {
      final cache = Cache.test(
        platform: FakePlatform(environment: <String, String>{'FLUTTER_ALREADY_LOCKED': 'true'}),
        processManager: FakeProcessManager.any(),
      );

      expect(cache.checkLockAcquired, returnsNormally);
    });
  });

  group('Cache', () {
    testWithoutContext('Continues on failed stamp file update', () async {
      final FileSystem fileSystem = MemoryFileSystem.test();
      final logger = BufferLogger.test();
      final Directory artifactDir = fileSystem.systemTempDirectory.createTempSync(
        'flutter_cache_test_artifact.',
      );
      final Directory downloadDir = fileSystem.systemTempDirectory.createTempSync(
        'flutter_cache_test_download.',
      );
      final Cache cache = FakeSecondaryCache()
        ..version = 'asdasd'
        ..artifactDirectory = artifactDir
        ..downloadDir = downloadDir
        ..onSetStamp = (String name, String version) {
          throw const FileSystemException('stamp write failed');
        };

      final artifact = FakeSimpleArtifact(cache);
      await artifact.update(FakeArtifactUpdater(), logger, fileSystem, FakeOperatingSystemUtils());

      expect(logger.warningText, contains('stamp write failed'));
    });

    testWithoutContext('Continues on missing version file', () async {
      final FileSystem fileSystem = MemoryFileSystem.test();
      final logger = BufferLogger.test();
      final Directory artifactDir = fileSystem.systemTempDirectory.createTempSync(
        'flutter_cache_test_artifact.',
      );
      final Directory downloadDir = fileSystem.systemTempDirectory.createTempSync(
        'flutter_cache_test_download.',
      );
      final Cache cache = FakeSecondaryCache()
        ..version =
            null // version is missing.
        ..artifactDirectory = artifactDir
        ..downloadDir = downloadDir;

      final artifact = FakeSimpleArtifact(cache);
      await artifact.update(FakeArtifactUpdater(), logger, fileSystem, FakeOperatingSystemUtils());

      expect(logger.warningText, contains('No known version for the artifact name "fake"'));
    });

    testWithoutContext(
      'Gradle wrapper should not be up to date, if some cached artifact is not available',
      () {
        final FileSystem fileSystem = MemoryFileSystem.test();
        final cache = Cache.test(fileSystem: fileSystem, processManager: FakeProcessManager.any());
        final gradleWrapper = GradleWrapper(cache);
        final Directory directory = cache.getCacheDir(
          fileSystem.path.join('artifacts', 'gradle_wrapper'),
        );
        fileSystem
            .file(fileSystem.path.join(directory.path, 'gradle', 'wrapper', 'gradle-wrapper.jar'))
            .createSync(recursive: true);

        expect(gradleWrapper.isUpToDateInner(fileSystem), false);
      },
    );

    testWithoutContext('Gradle wrapper will delete .properties/NOTICES if they exist', () async {
      final FileSystem fileSystem = MemoryFileSystem.test();
      final Directory artifactDir = fileSystem.systemTempDirectory.createTempSync(
        'flutter_cache_test_artifact.',
      );
      final cache = FakeSecondaryCache()
        ..artifactDirectory = artifactDir
        ..version = '123456';

      final operatingSystemUtils = OperatingSystemUtils(
        processManager: FakeProcessManager.any(),
        platform: FakePlatform(),
        logger: BufferLogger.test(),
        fileSystem: fileSystem,
      );
      final gradleWrapper = GradleWrapper(cache);
      final File propertiesFile = fileSystem.file(
        fileSystem.path.join(artifactDir.path, 'gradle', 'wrapper', 'gradle-wrapper.properties'),
      )..createSync(recursive: true);
      final File noticeFile = fileSystem.file(fileSystem.path.join(artifactDir.path, 'NOTICE'))
        ..createSync(recursive: true);

      await gradleWrapper.updateInner(FakeArtifactUpdater(), fileSystem, operatingSystemUtils);

      expect(propertiesFile, isNot(exists));
      expect(noticeFile, isNot(exists));
    });

    testWithoutContext(
      'Gradle wrapper should be up to date, only if all cached artifact are available',
      () {
        final FileSystem fileSystem = MemoryFileSystem.test();
        final cache = Cache.test(fileSystem: fileSystem, processManager: FakeProcessManager.any());
        final gradleWrapper = GradleWrapper(cache);
        final Directory directory = cache.getCacheDir(
          fileSystem.path.join('artifacts', 'gradle_wrapper'),
        );
        fileSystem
            .file(fileSystem.path.join(directory.path, 'gradle', 'wrapper', 'gradle-wrapper.jar'))
            .createSync(recursive: true);
        fileSystem
            .file(fileSystem.path.join(directory.path, 'gradlew'))
            .createSync(recursive: true);
        fileSystem
            .file(fileSystem.path.join(directory.path, 'gradlew.bat'))
            .createSync(recursive: true);

        expect(gradleWrapper.isUpToDateInner(fileSystem), true);
      },
    );

    testWithoutContext('should not be up to date, if some cached artifact is not', () async {
      final CachedArtifact artifact1 = FakeSecondaryCachedArtifact()..upToDate = true;
      final CachedArtifact artifact2 = FakeSecondaryCachedArtifact()..upToDate = false;
      final FileSystem fileSystem = MemoryFileSystem.test();

      final cache = Cache.test(
        fileSystem: fileSystem,
        artifacts: <CachedArtifact>[artifact1, artifact2],
        processManager: FakeProcessManager.any(),
      );

      expect(await cache.isUpToDate(), isFalse);
    });

    testWithoutContext('should be up to date, if all cached artifacts are', () async {
      final artifact1 = FakeSecondaryCachedArtifact()..upToDate = true;
      final artifact2 = FakeSecondaryCachedArtifact()..upToDate = true;
      final FileSystem fileSystem = MemoryFileSystem.test();
      final cache = Cache.test(
        fileSystem: fileSystem,
        artifacts: <CachedArtifact>[artifact1, artifact2],
        processManager: FakeProcessManager.any(),
      );

      expect(await cache.isUpToDate(), isTrue);
    });

    testWithoutContext('should update cached artifacts which are not up to date', () async {
      final artifact1 = FakeSecondaryCachedArtifact()..upToDate = true;
      final artifact2 = FakeSecondaryCachedArtifact()..upToDate = false;
      final FileSystem fileSystem = MemoryFileSystem.test();

      final cache = Cache.test(
        fileSystem: fileSystem,
        artifacts: <CachedArtifact>[artifact1, artifact2],
        processManager: FakeProcessManager.any(),
      );

      await cache.updateAll(<DevelopmentArtifact>{DevelopmentArtifact.universal});
      expect(artifact1.didUpdate, false);
      expect(artifact2.didUpdate, true);
    });

    testWithoutContext(
      "getter dyLdLibEntry concatenates the output of each artifact's dyLdLibEntry getter",
      () async {
        final artifact1 = FakeIosUsbArtifacts();
        final artifact2 = FakeIosUsbArtifacts();
        final artifact3 = FakeIosUsbArtifacts();
        artifact1.environment = <String, String>{
          'DYLD_LIBRARY_PATH': '/path/to/alpha:/path/to/beta',
        };
        artifact2.environment = <String, String>{
          'DYLD_LIBRARY_PATH': '/path/to/gamma:/path/to/delta:/path/to/epsilon',
        };
        artifact3.environment = <String, String>{'DYLD_LIBRARY_PATH': ''};
        final cache = Cache.test(
          artifacts: <CachedArtifact>[artifact1, artifact2, artifact3],
          processManager: FakeProcessManager.any(),
        );

        expect(cache.dyLdLibEntry.key, 'DYLD_LIBRARY_PATH');
        expect(
          cache.dyLdLibEntry.value,
          '/path/to/alpha:/path/to/beta:/path/to/gamma:/path/to/delta:/path/to/epsilon',
        );
      },
    );

    testWithoutContext('failed storage.googleapis.com download shows China warning', () async {
      final InternetAddress address = (await InternetAddress.lookup(
        'storage.googleapis.com',
      )).first;
      final artifact1 = FakeSecondaryCachedArtifact()..upToDate = false;
      final artifact2 = FakeSecondaryCachedArtifact()
        ..upToDate = false
        ..updateException = SocketException('Connection reset by peer', address: address);

      final logger = BufferLogger.test();
      final cache = Cache.test(
        artifacts: <CachedArtifact>[artifact1, artifact2],
        processManager: FakeProcessManager.any(),
        logger: logger,
      );
      await expectLater(
        () => cache.updateAll(<DevelopmentArtifact>{DevelopmentArtifact.universal}),
        throwsException,
      );
      expect(artifact1.didUpdate, true);
      // Don't continue when retrieval fails.
      expect(artifact2.didUpdate, false);
      expect(logger.errorText, contains('https://flutter.dev/to/china-setup'));
    });

    testWithoutContext('Invalid URI for FLUTTER_STORAGE_BASE_URL throws ToolExit', () async {
      final cache = Cache.test(
        platform: FakePlatform(
          environment: <String, String>{'FLUTTER_STORAGE_BASE_URL': ' http://foo'},
        ),
        processManager: FakeProcessManager.any(),
      );

      expect(() => cache.storageBaseUrl, throwsToolExit());
    });

    testWithoutContext('overridden storage base url prints warning', () async {
      final logger = BufferLogger.test();
      const baseUrl = 'https://storage.com';
      final cache = Cache.test(
        platform: FakePlatform(environment: <String, String>{'FLUTTER_STORAGE_BASE_URL': baseUrl}),
        processManager: FakeProcessManager.any(),
        logger: logger,
      );

      expect(cache.storageBaseUrl, baseUrl);
      expect(logger.warningText, contains('Flutter assets will be downloaded from $baseUrl'));
      expect(logger.statusText, isEmpty);
    });

    testWithoutContext('a non-empty realm is included in the storage url', () async {
      final fileSystem = MemoryFileSystem.test();
      final Directory cacheDir = fileSystem.currentDirectory
          .childDirectory('bin')
          .childDirectory('cache');
      final File engineVersionFile = cacheDir.childFile('engine.stamp');
      engineVersionFile.createSync(recursive: true);
      engineVersionFile.writeAsStringSync('abcdef');

      final File engineRealmFile = cacheDir.childFile('engine.realm');
      engineRealmFile.createSync(recursive: true);
      engineRealmFile.writeAsStringSync('flutter_archives_v2');

      final cache = Cache.test(processManager: FakeProcessManager.any(), fileSystem: fileSystem);

      expect(cache.storageBaseUrl, contains('flutter_archives_v2'));
    });
  });

  testWithoutContext('flattenNameSubdirs', () {
    expect(
      flattenNameSubdirs(Uri.parse('http://flutter.dev/foo/bar'), MemoryFileSystem.test()),
      'flutter.dev/foo/bar',
    );
    expect(
      flattenNameSubdirs(Uri.parse('http://api.flutter.dev/foo/bar'), MemoryFileSystem.test()),
      'api.flutter.dev/foo/bar',
    );
    expect(
      flattenNameSubdirs(Uri.parse('https://www.flutter.dev'), MemoryFileSystem.test()),
      'www.flutter.dev',
    );
  });

  testWithoutContext(
    'EngineCachedArtifact makes binary dirs readable and executable by all',
    () async {
      final operatingSystemUtils = FakeOperatingSystemUtils();
      final FileSystem fileSystem = MemoryFileSystem.test();
      final Directory artifactDir = fileSystem.systemTempDirectory.createTempSync(
        'flutter_cache_test_artifact.',
      );
      final Directory downloadDir = fileSystem.systemTempDirectory.createTempSync(
        'flutter_cache_test_download.',
      );
      final cache = FakeSecondaryCache()
        ..artifactDirectory = artifactDir
        ..downloadDir = downloadDir;
      artifactDir.childDirectory('bin_dir').createSync();
      artifactDir.childFile('unused_url_path').createSync();

      final artifact = FakeCachedArtifact(
        cache: cache,
        binaryDirs: <List<String>>[
          <String>['bin_dir', 'unused_url_path'],
        ],
        requiredArtifacts: DevelopmentArtifact.universal,
      );
      await artifact.updateInner(FakeArtifactUpdater(), fileSystem, operatingSystemUtils);
      final Directory dir = fileSystem.systemTempDirectory
          .listSync(recursive: true)
          .whereType<Directory>()
          .singleWhereOrNull((Directory directory) => directory.basename == 'bin_dir')!;

      expect(dir, isNotNull);
      expect(dir.path, artifactDir.childDirectory('bin_dir').path);
      expect(operatingSystemUtils.chmods, <List<String>>[
        <String>['/.tmp_rand0/flutter_cache_test_artifact.rand0/bin_dir', 'a+r,a+x'],
      ]);
    },
  );

  testWithoutContext('EngineCachedArtifact downloads package zip from expected URL', () async {
    final operatingSystemUtils = FakeOperatingSystemUtils();
    final FileSystem fileSystem = MemoryFileSystem.test();
    final Directory artifactDir = fileSystem.systemTempDirectory.createTempSync(
      'flutter_cache_test_artifact.',
    );
    final Directory downloadDir = fileSystem.systemTempDirectory.createTempSync(
      'flutter_cache_test_download.',
    );
    final cache = FakeSecondaryCache()
      ..artifactDirectory = artifactDir
      ..downloadDir = downloadDir;
    artifactDir.childDirectory('pkg').createSync();

    final artifact = FakeCachedArtifact(
      cache: cache,
      binaryDirs: <List<String>>[],
      packageDirs: <String>['package_dir'],
      requiredArtifacts: DevelopmentArtifact.universal,
    );

    Uri? packageUrl;
    final ArtifactUpdater artifactUpdater = FakeArtifactUpdater()
      ..onDownloadZipArchive = (String message, Uri url, Directory location) {
        location.childDirectory('package_dir').createSync();
        packageUrl = url;
      };

    await artifact.updateInner(artifactUpdater, fileSystem, operatingSystemUtils);
    expect(packageUrl, isNotNull);
    expect(
      packageUrl.toString(),
      'https://storage.googleapis.com/flutter_infra_release/flutter/abc123/package_dir.zip',
    );

    final Directory dir = fileSystem.systemTempDirectory
        .listSync(recursive: true)
        .whereType<Directory>()
        .singleWhereOrNull((Directory directory) => directory.basename == 'pkg')!;
    expect(dir.path, artifactDir.childDirectory('pkg').path);
    expect(dir.childDirectory('package_dir').existsSync(), isTrue);
  });

  testWithoutContext('Try to remove without a parent', () async {
    final FileSystem fileSystem = MemoryFileSystem.test();
    final Directory parent = fileSystem.directory('dir');
    parent.createSync();
    final Directory child = parent.childDirectory('child');
    child.createSync();
    final Directory tempStorage = parent.childDirectory('temp');
    tempStorage.createSync();
    final fakeArtifact = FakeArtifactUpdaterDownload(
      operatingSystemUtils: FakeOperatingSystemUtils(),
      logger: BufferLogger.test(),
      fileSystem: fileSystem,
      tempStorage: tempStorage,
      httpClient: HttpClient(),
      platform: FakePlatform(),
      allowedBaseUrls: <String>[],
    );
    final File file = child.childFile('file');
    file.createSync();
    fakeArtifact.addFiles(<File>[file]);
    child.deleteSync(recursive: true);
    fakeArtifact.removeDownloadedFiles();
  });

  testWithoutContext(
    'IosUsbArtifacts verifies executables for libimobiledevice in isUpToDateInner',
    () async {
      final FileSystem fileSystem = MemoryFileSystem.test();
      final cache = Cache.test(fileSystem: fileSystem, processManager: FakeProcessManager.any());
      final iosUsbArtifacts = IosUsbArtifacts(
        'libimobiledevice',
        cache,
        platform: FakePlatform(operatingSystem: 'macos'),
      );
      iosUsbArtifacts.location.createSync();
      final File ideviceScreenshotFile = iosUsbArtifacts.location.childFile('idevicescreenshot')
        ..createSync();
      iosUsbArtifacts.location.childFile('idevicesyslog').createSync();

      expect(iosUsbArtifacts.isUpToDateInner(fileSystem), true);

      ideviceScreenshotFile.deleteSync();

      expect(iosUsbArtifacts.isUpToDateInner(fileSystem), false);
    },
  );

  testWithoutContext('IosUsbArtifacts verifies iproxy for libusbmuxd in isUpToDateInner', () async {
    final FileSystem fileSystem = MemoryFileSystem.test();
    final cache = Cache.test(fileSystem: fileSystem, processManager: FakeProcessManager.any());
    final iosUsbArtifacts = IosUsbArtifacts(
      'libusbmuxd',
      cache,
      platform: FakePlatform(operatingSystem: 'macos'),
    );
    iosUsbArtifacts.location.createSync();
    final File iproxy = iosUsbArtifacts.location.childFile('iproxy')..createSync();

    expect(iosUsbArtifacts.isUpToDateInner(fileSystem), true);

    iproxy.deleteSync();

    expect(iosUsbArtifacts.isUpToDateInner(fileSystem), false);
  });

  testWithoutContext(
    'IosUsbArtifacts does not verify executables for openssl in isUpToDateInner',
    () async {
      final FileSystem fileSystem = MemoryFileSystem.test();
      final cache = Cache.test(fileSystem: fileSystem, processManager: FakeProcessManager.any());
      final iosUsbArtifacts = IosUsbArtifacts(
        'openssl',
        cache,
        platform: FakePlatform(operatingSystem: 'macos'),
      );
      iosUsbArtifacts.location.createSync();

      expect(iosUsbArtifacts.isUpToDateInner(fileSystem), true);
    },
  );

  testWithoutContext('IosUsbArtifacts uses unsigned when specified', () async {
    final cache = Cache.test(processManager: FakeProcessManager.any());
    cache.useUnsignedMacBinaries = true;

    final iosUsbArtifacts = IosUsbArtifacts(
      'name',
      cache,
      platform: FakePlatform(operatingSystem: 'macos'),
    );
    expect(iosUsbArtifacts.archiveUri.toString(), contains('/unsigned/'));
  });

  testWithoutContext('IosUsbArtifacts does not use unsigned when not specified', () async {
    final cache = Cache.test(processManager: FakeProcessManager.any());
    final iosUsbArtifacts = IosUsbArtifacts(
      'name',
      cache,
      platform: FakePlatform(operatingSystem: 'macos'),
    );

    expect(iosUsbArtifacts.archiveUri.toString(), isNot(contains('/unsigned/')));
  });

  testWithoutContext('FlutterRunnerDebugSymbols downloads Flutter runner debug symbols', () async {
    final FileSystem fileSystem = MemoryFileSystem.test();
    final Cache cache = FakeSecondaryCache()
      ..artifactDirectory = fileSystem.currentDirectory
      ..version = '123456';

    final packageResolver = FakeVersionedPackageResolver();
    final flutterRunnerDebugSymbols = FlutterRunnerDebugSymbols(
      cache,
      packageResolver: packageResolver,
      platform: FakePlatform(),
    );

    await flutterRunnerDebugSymbols.updateInner(
      FakeArtifactUpdater(),
      fileSystem,
      FakeOperatingSystemUtils(),
    );

    expect(packageResolver.resolved, <List<String>>[
      <String>['fuchsia-debug-symbols-x64', '123456'],
      <String>['fuchsia-debug-symbols-arm64', '123456'],
    ]);
  });

  testWithoutContext('FontSubset in universal artifacts', () {
    final cache = Cache.test(processManager: FakeProcessManager.any());
    final artifacts = FontSubsetArtifacts(cache, platform: FakePlatform());

    expect(artifacts.developmentArtifact, DevelopmentArtifact.universal);
  });

  testWithoutContext('FontSubset artifacts on x64 linux', () {
    fakeProcessManager.addCommand(unameCommandForX64);

    final Cache cache = createCache(FakePlatform());
    final artifacts = FontSubsetArtifacts(cache, platform: FakePlatform());
    cache.includeAllPlatforms = false;

    expect(artifacts.getBinaryDirs(), <List<String>>[
      <String>['linux-x64', 'linux-x64/font-subset.zip'],
    ]);
  });

  testWithoutContext('FontSubset artifacts on arm64 linux', () {
    fakeProcessManager.addCommand(unameCommandForArm64);

    final Cache cache = createCache(FakePlatform());
    final artifacts = FontSubsetArtifacts(cache, platform: FakePlatform());
    cache.includeAllPlatforms = false;

    expect(artifacts.getBinaryDirs(), <List<String>>[
      <String>['linux-arm64', 'linux-arm64/font-subset.zip'],
    ]);
  });

  testWithoutContext('FontSubset artifacts on windows', () {
    final Cache cache = createCache(FakePlatform(operatingSystem: 'windows'));
    final artifacts = FontSubsetArtifacts(
      cache,
      platform: FakePlatform(operatingSystem: 'windows'),
    );
    cache.includeAllPlatforms = false;

    expect(artifacts.getBinaryDirs(), <List<String>>[
      <String>['windows-x64', 'windows-x64/font-subset.zip'],
    ]);
  });

  testWithoutContext('FontSubset artifacts on macos', () {
    fakeProcessManager.addCommands(<FakeCommand>[
      const FakeCommand(command: <String>['which', 'sysctl'], stdout: '/sbin/sysctl'),
      const FakeCommand(
        command: <String>['sysctl', 'hw.optional.arm64'],
        stdout: 'hw.optional.arm64: 0',
      ),
    ]);

    final Cache cache = createCache(FakePlatform(operatingSystem: 'macos'));
    final artifacts = FontSubsetArtifacts(cache, platform: FakePlatform(operatingSystem: 'macos'));
    cache.includeAllPlatforms = false;

    expect(artifacts.getBinaryDirs(), <List<String>>[
      <String>['darwin-x64', 'darwin-x64/font-subset.zip'],
    ]);
  });

  testWithoutContext('FontSubset artifacts on fuchsia', () {
    fakeProcessManager.addCommand(unameCommandForX64);

    final Cache cache = createCache(FakePlatform(operatingSystem: 'fuchsia'));
    final artifacts = FontSubsetArtifacts(
      cache,
      platform: FakePlatform(operatingSystem: 'fuchsia'),
    );
    cache.includeAllPlatforms = false;

    expect(
      artifacts.getBinaryDirs,
      throwsToolExit(message: 'Unsupported operating system: fuchsia'),
    );
  });

  testWithoutContext('FontSubset artifacts for all platforms on x64 hosts', () {
    fakeProcessManager.addCommand(unameCommandForX64);

    final Cache cache = createCache(FakePlatform(operatingSystem: 'fuchsia'));
    final artifacts = FontSubsetArtifacts(
      cache,
      platform: FakePlatform(operatingSystem: 'fuchsia'),
    );
    cache.includeAllPlatforms = true;

    expect(artifacts.getBinaryDirs(), <List<String>>[
      <String>['darwin-x64', 'darwin-x64/font-subset.zip'],
      <String>['linux-x64', 'linux-x64/font-subset.zip'],
      <String>['windows-x64', 'windows-x64/font-subset.zip'],
    ]);
  });

  testWithoutContext('FontSubset artifacts for all platforms on arm64 hosts', () {
    fakeProcessManager.addCommand(unameCommandForArm64);

    final Cache cache = createCache(FakePlatform(operatingSystem: 'fuchsia'));
    final artifacts = FontSubsetArtifacts(
      cache,
      platform: FakePlatform(operatingSystem: 'fuchsia'),
    );
    cache.includeAllPlatforms = true;

    expect(artifacts.getBinaryDirs(), <List<String>>[
      <String>['darwin-x64', 'darwin-arm64/font-subset.zip'],
      <String>['linux-arm64', 'linux-arm64/font-subset.zip'],
      <String>['windows-arm64', 'windows-arm64/font-subset.zip'],
    ]);
  });

  testWithoutContext('macOS desktop artifacts include all gen_snapshot binaries', () {
    final cache = Cache.test(processManager: FakeProcessManager.any());
    final artifacts = MacOSEngineArtifacts(cache, platform: FakePlatform());
    cache.includeAllPlatforms = false;
    cache.platformOverrideArtifacts = <String>{'macos'};

    expect(
      artifacts.getBinaryDirs(),
      containsAll(<List<String>>[
        <String>['darwin-x64', 'darwin-x64/gen_snapshot.zip'],
        <String>['darwin-x64-profile', 'darwin-x64-profile/gen_snapshot.zip'],
        <String>['darwin-x64-release', 'darwin-x64-release/gen_snapshot.zip'],
      ]),
    );
  });

  testWithoutContext('macOS desktop artifacts ignore filtering when requested', () {
    final cache = Cache.test(processManager: FakeProcessManager.any());
    final artifacts = MacOSEngineArtifacts(cache, platform: FakePlatform());
    cache.includeAllPlatforms = false;
    cache.platformOverrideArtifacts = <String>{'macos'};

    expect(artifacts.getBinaryDirs(), isNotEmpty);
  });

  testWithoutContext('Windows desktop artifacts ignore filtering when requested', () {
    final cache = Cache.test(processManager: FakeProcessManager.any());
    final artifacts = WindowsEngineArtifacts(cache, platform: FakePlatform());
    cache.includeAllPlatforms = false;
    cache.platformOverrideArtifacts = <String>{'windows'};

    expect(artifacts.getBinaryDirs(), isNotEmpty);
  });

  testWithoutContext('Windows desktop artifacts include profile and release artifacts', () {
    final cache = Cache.test(processManager: FakeProcessManager.any());
    final artifacts = WindowsEngineArtifacts(
      cache,
      platform: FakePlatform(operatingSystem: 'windows'),
    );

    expect(
      artifacts.getBinaryDirs(),
      containsAll(<Matcher>[contains(contains('profile')), contains(contains('release'))]),
    );
  });

  testWithoutContext('Linux desktop artifacts ignore filtering when requested', () {
    fakeProcessManager.addCommand(unameCommandForX64);

    final Cache cache = createCache(FakePlatform());
    final artifacts = LinuxEngineArtifacts(cache, platform: FakePlatform(operatingSystem: 'macos'));
    cache.includeAllPlatforms = false;
    cache.platformOverrideArtifacts = <String>{'linux'};

    expect(artifacts.getBinaryDirs(), isNotEmpty);
  });

  testWithoutContext('Linux desktop artifacts for x64 include profile and release artifacts', () {
    fakeProcessManager.addCommand(unameCommandForX64);

    final Cache cache = createCache(FakePlatform());
    final artifacts = LinuxEngineArtifacts(cache, platform: FakePlatform());

    expect(artifacts.getBinaryDirs(), <List<String>>[
      <String>['linux-x64', 'linux-x64-debug/linux-x64-flutter-gtk.zip'],
      <String>['linux-x64-profile', 'linux-x64-profile/linux-x64-flutter-gtk.zip'],
      <String>['linux-x64-release', 'linux-x64-release/linux-x64-flutter-gtk.zip'],
    ]);
  });

  testWithoutContext('Linux desktop artifacts for arm64 include profile and release artifacts', () {
    fakeProcessManager.addCommand(unameCommandForArm64);

    final Cache cache = createCache(FakePlatform());
    final artifacts = LinuxEngineArtifacts(cache, platform: FakePlatform());

    expect(artifacts.getBinaryDirs(), <List<String>>[
      <String>['linux-arm64', 'linux-arm64-debug/linux-arm64-flutter-gtk.zip'],
      <String>['linux-arm64-profile', 'linux-arm64-profile/linux-arm64-flutter-gtk.zip'],
      <String>['linux-arm64-release', 'linux-arm64-release/linux-arm64-flutter-gtk.zip'],
    ]);
  });

  testWithoutContext('Cache can delete stampfiles of artifacts', () {
    final FileSystem fileSystem = MemoryFileSystem.test();
    final artifactSet = FakeIosUsbArtifacts();
    final logger = BufferLogger.test();

    artifactSet.stampName = 'STAMP';
    final cache = Cache(
      artifacts: <ArtifactSet>[artifactSet],
      logger: logger,
      fileSystem: fileSystem,
      platform: FakePlatform(),
      osUtils: FakeOperatingSystemUtils(),
      rootOverride: fileSystem.currentDirectory,
    );
    final File toolStampFile = fileSystem.file('bin/cache/flutter_tools.stamp');
    final File stampFile = cache.getStampFileFor(artifactSet.stampName);
    stampFile.createSync(recursive: true);
    toolStampFile.createSync(recursive: true);

    cache.clearStampFiles();

    expect(logger.errorText, isEmpty);
    expect(stampFile, isNot(exists));
    expect(toolStampFile, isNot(exists));
  });

  testWithoutContext('Cache does not attempt to delete already missing stamp files', () {
    final FileSystem fileSystem = MemoryFileSystem.test();
    final artifactSet = FakeIosUsbArtifacts();
    final logger = BufferLogger.test();

    artifactSet.stampName = 'STAMP';
    final cache = Cache(
      artifacts: <ArtifactSet>[artifactSet],
      logger: logger,
      fileSystem: fileSystem,
      platform: FakePlatform(),
      osUtils: FakeOperatingSystemUtils(),
      rootOverride: fileSystem.currentDirectory,
    );
    final File toolStampFile = fileSystem.file('bin/cache/flutter_tools.stamp');
    final File stampFile = cache.getStampFileFor(artifactSet.stampName);
    toolStampFile.createSync(recursive: true);

    cache.clearStampFiles();

    expect(logger.errorText, isEmpty);
    expect(stampFile, isNot(exists));
    expect(toolStampFile, isNot(exists));
  });

  testWithoutContext('Cache catches file system exception from missing tool stamp file', () {
    final FileSystem fileSystem = MemoryFileSystem.test();
    final artifactSet = FakeIosUsbArtifacts();
    final logger = BufferLogger.test();

    artifactSet.stampName = 'STAMP';
    final cache = Cache(
      artifacts: <ArtifactSet>[artifactSet],
      logger: logger,
      fileSystem: fileSystem,
      platform: FakePlatform(),
      osUtils: FakeOperatingSystemUtils(),
      rootOverride: fileSystem.currentDirectory,
    );

    cache.clearStampFiles();

    expect(logger.warningText, contains('Failed to delete some stamp files'));
  });

  testWithoutContext(
    'FlutterWebSdk fetches web artifacts and deletes previous directory contents',
    () async {
      final fileSystem = MemoryFileSystem.test();
      final Directory internalDir = fileSystem.currentDirectory
          .childDirectory('bin')
          .childDirectory('internal');
      final File canvasKitVersionFile = internalDir.childFile('canvaskit.version');
      canvasKitVersionFile.createSync(recursive: true);
      canvasKitVersionFile.writeAsStringSync('abcdefg');

      final Directory cacheDir = fileSystem.currentDirectory
          .childDirectory('bin')
          .childDirectory('cache');
      final File engineVersionFile = cacheDir.childFile('engine.stamp');
      engineVersionFile.createSync(recursive: true);
      engineVersionFile.writeAsStringSync('hijklmnop');

      final cache = Cache.test(processManager: FakeProcessManager.any(), fileSystem: fileSystem);
      final Directory webCacheDirectory = cache.getWebSdkDirectory();
      final artifactUpdater = FakeArtifactUpdater();
      final webSdk = FlutterWebSdk(cache);

      final messages = <String>[];
      final downloads = <String>[];
      final locations = <String>[];
      artifactUpdater.onDownloadZipArchive = (String message, Uri uri, Directory location) {
        messages.add(message);
        downloads.add(uri.toString());
        locations.add(location.path);
        location.createSync(recursive: true);
        location.childFile('foo').createSync();
      };
      webCacheDirectory.childFile('bar').createSync(recursive: true);

      await webSdk.updateInner(artifactUpdater, fileSystem, FakeOperatingSystemUtils());

      expect(messages, <String>['Downloading Web SDK...']);

      expect(downloads, <String>[
        'https://storage.googleapis.com/flutter_infra_release/flutter/hijklmnop/flutter-web-sdk.zip',
      ]);

      expect(locations, <String>['/bin/cache/flutter_web_sdk']);

      expect(webCacheDirectory.childFile('foo'), exists);
      expect(webCacheDirectory.childFile('bar'), isNot(exists));
    },
  );

  testWithoutContext(
    'FlutterWebSdk CanvasKit URL can be overridden via FLUTTER_STORAGE_BASE_URL',
    () async {
      final fileSystem = MemoryFileSystem.test();
      final Directory internalDir = fileSystem.currentDirectory
          .childDirectory('bin')
          .childDirectory('internal');
      final File canvasKitVersionFile = internalDir.childFile('canvaskit.version');
      canvasKitVersionFile.createSync(recursive: true);
      canvasKitVersionFile.writeAsStringSync('abcdefg');

      final Directory cacheDir = fileSystem.currentDirectory
          .childDirectory('bin')
          .childDirectory('cache');
      final File engineVersionFile = cacheDir.childFile('engine.stamp');
      engineVersionFile.createSync(recursive: true);
      engineVersionFile.writeAsStringSync('hijklmnop');

      final cache = Cache.test(
        processManager: FakeProcessManager.any(),
        fileSystem: fileSystem,
        platform: FakePlatform(
          environment: <String, String>{
            'FLUTTER_STORAGE_BASE_URL': 'https://flutter.storage.com/override',
          },
        ),
      );
      final Directory webCacheDirectory = cache.getWebSdkDirectory();
      final artifactUpdater = FakeArtifactUpdater();
      final webSdk = FlutterWebSdk(cache);

      final downloads = <String>[];
      final locations = <String>[];
      artifactUpdater.onDownloadZipArchive = (String message, Uri uri, Directory location) {
        downloads.add(uri.toString());
        locations.add(location.path);
        location.createSync(recursive: true);
        location.childFile('foo').createSync();
      };
      webCacheDirectory.childFile('bar').createSync(recursive: true);

      await webSdk.updateInner(artifactUpdater, fileSystem, FakeOperatingSystemUtils());

      expect(downloads, <String>[
        'https://flutter.storage.com/override/flutter_infra_release/flutter/hijklmnop/flutter-web-sdk.zip',
      ]);
    },
  );

  testWithoutContext('FlutterWebSdk uses tryToDelete to handle directory edge cases', () async {
    final handler = FileExceptionHandler();
    final fileSystem = MemoryFileSystem.test(opHandle: handler.opHandle);
    final cache = Cache.test(processManager: FakeProcessManager.any(), fileSystem: fileSystem);
    final Directory webCacheDirectory = cache.getWebSdkDirectory();
    final artifactUpdater = FakeArtifactUpdater();
    final webSdk = FlutterWebSdk(cache);

    final Directory cacheDir = fileSystem.currentDirectory
        .childDirectory('bin')
        .childDirectory('cache');
    final File engineVersionFile = cacheDir.childFile('engine.stamp');
    engineVersionFile.createSync(recursive: true);
    engineVersionFile.writeAsStringSync('hijklmnop');

    artifactUpdater.onDownloadZipArchive = (String message, Uri uri, Directory location) {
      location.createSync(recursive: true);
      location.childFile('foo').createSync();
    };
    webCacheDirectory.childFile('bar').createSync(recursive: true);
    handler.addError(
      webCacheDirectory,
      FileSystemOp.delete,
      const FileSystemException('', '', OSError('', 2)),
    );

    await expectLater(
      () => webSdk.updateInner(artifactUpdater, fileSystem, FakeOperatingSystemUtils()),
      throwsToolExit(
        message: RegExp('Unable to delete file or directory at "/bin/cache/flutter_web_sdk"'),
      ),
    );
  });

  testWithoutContext('FlutterEngineStamp fetches engine_stamp.json', () async {
    final fileSystem = MemoryFileSystem.test();
    final Directory cacheDir = fileSystem.currentDirectory
        .childDirectory('bin')
        .childDirectory('cache');
    final File engineVersionFile = cacheDir.childFile('engine.stamp');
    engineVersionFile.createSync(recursive: true);
    engineVersionFile.writeAsStringSync('hijklmnop');

    final cache = Cache.test(processManager: FakeProcessManager.any(), fileSystem: fileSystem);
    final artifactUpdater = FakeArtifactUpdater();
    final engineStamp = FlutterEngineStamp(cache, BufferLogger.test());

    final messages = <String>[];
    final downloads = <String>[];
    final locations = <String>[];
    artifactUpdater.onDownloadFile = (String message, Uri uri, Directory location) {
      messages.add(message);
      downloads.add(uri.toString());
      locations.add(location.path);
      location.createSync(recursive: true);
    };

    await engineStamp.updateInner(artifactUpdater, fileSystem, FakeOperatingSystemUtils());

    expect(messages, <String>['Downloading engine information...']);

    expect(downloads, <String>[
      'https://storage.googleapis.com/flutter_infra_release/flutter/hijklmnop/engine_stamp.json',
    ]);
    expect(locations, <String>['/bin/cache']);
    // file copy is done by the real uploader; not the fake.
  });

  testWithoutContext(
    'LegacyCanvasKitRemover removes old canvaskit artifacts if they exist',
    () async {
      final handler = FileExceptionHandler();
      final fileSystem = MemoryFileSystem.test(opHandle: handler.opHandle);
      final cache = Cache.test(processManager: FakeProcessManager.any(), fileSystem: fileSystem);
      final File canvasKitWasm = fileSystem.file(
        fileSystem.path.join(cache.getRoot().path, 'canvaskit', 'canvaskit.wasm'),
      );
      canvasKitWasm.createSync(recursive: true);
      canvasKitWasm.writeAsStringSync('hello world');

      final remover = LegacyCanvasKitRemover(cache);
      expect(await remover.isUpToDate(fileSystem), false);
      await remover.update(
        FakeArtifactUpdater(),
        BufferLogger.test(),
        fileSystem,
        FakeOperatingSystemUtils(),
      );
      expect(await remover.isUpToDate(fileSystem), true);

      expect(canvasKitWasm.existsSync(), isFalse);
    },
  );

  testWithoutContext('Cache handles exception thrown if stamp file cannot be parsed', () {
    final exceptionHandler = FileExceptionHandler();
    final FileSystem fileSystem = MemoryFileSystem.test(opHandle: exceptionHandler.opHandle);
    final Logger logger = BufferLogger.test();
    final cache = FakeCache(
      fileSystem: fileSystem,
      logger: logger,
      platform: FakePlatform(),
      osUtils: FakeOperatingSystemUtils(),
    );
    final File file = fileSystem.file('stamp');
    cache.stampFile = file;

    expect(cache.getStampFor('foo'), null);

    file.createSync();
    exceptionHandler.addError(file, FileSystemOp.read, const FileSystemException());

    expect(cache.getStampFor('foo'), null);
  });

  testWithoutContext('Cache parses stamp file', () {
    final FileSystem fileSystem = MemoryFileSystem.test();
    final Logger logger = BufferLogger.test();
    final cache = FakeCache(
      fileSystem: fileSystem,
      logger: logger,
      platform: FakePlatform(),
      osUtils: FakeOperatingSystemUtils(),
    );

    final File file = fileSystem.file('stamp')..writeAsStringSync('ABC ');
    cache.stampFile = file;

    expect(cache.getStampFor('foo'), 'ABC');
  });

  testWithoutContext('PubDependencies needs to be updated if the package config'
      ' file or the source directories are missing', () async {
    final logger = BufferLogger.test();
    final fileSystem = MemoryFileSystem.test();
    final pubDependencies = PubDependencies(
      flutterRoot: () => '',
      logger: logger,
      pub: () => FakePub(),
      projectFactory: FakeFlutterProjectFactory(),
    );

    expect(await pubDependencies.isUpToDate(fileSystem), false); // no package config

    fileSystem.file('packages/flutter_tools/.dart_tool/package_config.json')
      ..createSync(recursive: true)
      ..writeAsStringSync('''
{
  "configVersion": 2,
  "packages": [
    {
      "name": "example",
      "rootUri": "file:///.pub-cache/hosted/pub.dartlang.org/example-7.0.0",
      "packageUri": "lib/",
      "languageVersion": "2.7"
    }
  ],
  "generated": "2020-09-15T20:29:20.691147Z",
  "generator": "pub",
  "generatorVersion": "2.10.0-121.0.dev"
}
''');

    expect(await pubDependencies.isUpToDate(fileSystem), false); // dependencies are missing.

    fileSystem
        .file('.pub-cache/hosted/pub.dartlang.org/example-7.0.0/pubspec.yaml')
        .createSync(recursive: true);

    expect(await pubDependencies.isUpToDate(fileSystem), true);
  });

  testWithoutContext('PubDependencies updates via pub get', () async {
    final logger = BufferLogger.test();
    final fileSystem = MemoryFileSystem.test();
    final pub = FakePub();
    final pubDependencies = PubDependencies(
      flutterRoot: () => '',
      logger: logger,
      pub: () => pub,
      projectFactory: FakeFlutterProjectFactory(),
    );

    await pubDependencies.update(
      FakeArtifactUpdater(),
      logger,
      fileSystem,
      FakeOperatingSystemUtils(),
    );

    expect(pub.calledGet, 1);
    expect(
      pub.invocations.first,
      predicate<FakePubInvocation>(
        (FakePubInvocation invocation) => invocation.outputMode == PubOutputMode.failuresOnly,
        'Pub invoked with PubOutputMode.none',
      ),
    );
  });

  testUsingContext('Check current DevTools version', () async {
    final String currentDevToolsVersion = globals.cache.devToolsVersion;
    final devToolsVersionFormat = RegExp(r'\d+\.\d+\.\d+(?:-\S+)?');
    expect(devToolsVersionFormat.allMatches(currentDevToolsVersion).length, 1);
  });

  // Check that the build number matches the format documented here:
  // https://dart.dev/get-dart#release-channels
  testUsingContext('Check current Dart SDK build number', () async {
    final String currentDartSdkVersion = globals.cache.dartSdkBuild;
    final dartSdkVersionFormat = RegExp(r'\d+\.\d+\.\d+(?:-\S+)?');

    expect(dartSdkVersionFormat.allMatches(currentDartSdkVersion).length, 1);
  });

  group('AndroidMavenArtifacts', () {
    MemoryFileSystem? memoryFileSystem;
    Cache? cache;
    FakeAndroidSdk? fakeAndroidSdk;

    setUp(() {
      memoryFileSystem = MemoryFileSystem.test();
      cache = Cache.test(fileSystem: memoryFileSystem, processManager: FakeProcessManager.any());
      fakeAndroidSdk = FakeAndroidSdk();
    });

    testWithoutContext('AndroidMavenArtifacts has a specified development artifact', () async {
      final mavenArtifacts = AndroidMavenArtifacts(
        cache!,
        java: FakeJava(),
        platform: FakePlatform(),
      );
      expect(mavenArtifacts.developmentArtifact, DevelopmentArtifact.androidMaven);
    });

    testUsingContext(
      'AndroidMavenArtifacts can invoke Gradle resolve dependencies if Android SDK is present',
      () async {
        final String? oldRoot = Cache.flutterRoot;
        Cache.flutterRoot = '';
        try {
          final mavenArtifacts = AndroidMavenArtifacts(
            cache!,
            java: FakeJava(),
            platform: FakePlatform(),
          );
          expect(await mavenArtifacts.isUpToDate(memoryFileSystem!), isFalse);

          final Directory gradleWrapperDir = cache!.getArtifactDirectory('gradle_wrapper')
            ..createSync(recursive: true);
          gradleWrapperDir.childFile('gradlew').writeAsStringSync('irrelevant');
          gradleWrapperDir.childFile('gradlew.bat').writeAsStringSync('irrelevant');

          await mavenArtifacts.update(
            FakeArtifactUpdater(),
            BufferLogger.test(),
            memoryFileSystem!,
            FakeOperatingSystemUtils(),
          );

          expect(await mavenArtifacts.isUpToDate(memoryFileSystem!), isFalse);
          expect(fakeAndroidSdk!.reinitialized, true);
        } finally {
          Cache.flutterRoot = oldRoot;
        }
      },
      overrides: <Type, Generator>{
        Cache: () => cache,
        FileSystem: () => memoryFileSystem,
        Platform: () => FakePlatform(),
        ProcessManager: () => FakeProcessManager.list(<FakeCommand>[
          const FakeCommand(
            command: <String>[
              '/bin/cache/flutter_gradle_wrapper.rand0/gradlew',
              '-b',
              'packages/flutter_tools/gradle/resolve_dependencies.gradle.kts',
              '--project-cache-dir',
              '/bin/cache/flutter_gradle_wrapper.rand0',
              'resolveDependencies',
            ],
          ),
        ]),
        AndroidSdk: () => fakeAndroidSdk,
      },
    );

    testUsingContext(
      'AndroidMavenArtifacts is a no-op if the Android SDK is absent',
      () async {
        final mavenArtifacts = AndroidMavenArtifacts(
          cache!,
          java: FakeJava(),
          platform: FakePlatform(),
        );
        expect(await mavenArtifacts.isUpToDate(memoryFileSystem!), isFalse);

        await mavenArtifacts.update(
          FakeArtifactUpdater(),
          BufferLogger.test(),
          memoryFileSystem!,
          FakeOperatingSystemUtils(),
        );

        expect(await mavenArtifacts.isUpToDate(memoryFileSystem!), isFalse);
      },
      overrides: <Type, Generator>{
        Cache: () => cache,
        FileSystem: () => memoryFileSystem,
        ProcessManager: () => FakeProcessManager.empty(),
        AndroidSdk: () => null, // Android SDK was not located.
      },
    );
  });
}

class FakeCachedArtifact extends EngineCachedArtifact {
  FakeCachedArtifact({
    String stampName = 'STAMP',
    required Cache cache,
    required DevelopmentArtifact requiredArtifacts,
    this.binaryDirs = const <List<String>>[],
    this.licenseDirs = const <String>[],
    this.packageDirs = const <String>[],
  }) : super(stampName, cache, requiredArtifacts);

  final List<List<String>> binaryDirs;
  final List<String> licenseDirs;
  final List<String> packageDirs;

  @override
  List<List<String>> getBinaryDirs() => binaryDirs;

  @override
  List<String> getLicenseDirs() => licenseDirs;

  @override
  List<String> getPackageDirs() => packageDirs;
}

class FakeSimpleArtifact extends CachedArtifact {
  FakeSimpleArtifact(Cache cache) : super('fake', cache, DevelopmentArtifact.universal);

  @override
  Future<void> updateInner(
    ArtifactUpdater artifactUpdater,
    FileSystem fileSystem,
    OperatingSystemUtils operatingSystemUtils,
  ) async {}
}

class FakeSecondaryCachedArtifact extends Fake implements CachedArtifact {
  var upToDate = false;
  var didUpdate = false;
  Exception? updateException;

  @override
  Future<bool> isUpToDate(FileSystem fileSystem) async => upToDate;

  @override
  Future<void> update(
    ArtifactUpdater artifactUpdater,
    Logger logger,
    FileSystem fileSystem,
    OperatingSystemUtils operatingSystemUtils, {
    bool offline = false,
  }) async {
    if (updateException != null) {
      throw updateException!;
    }
    didUpdate = true;
  }

  @override
  DevelopmentArtifact get developmentArtifact => DevelopmentArtifact.universal;
}

class FakeIosUsbArtifacts extends Fake implements IosUsbArtifacts {
  @override
  var environment = <String, String>{};

  @override
  var stampName = 'ios-usb';
}

class FakeSecondaryCache extends Fake implements Cache {
  Directory? downloadDir;
  late Directory artifactDirectory;
  String? version;
  late void Function(String artifactName, String version) onSetStamp;

  @override
  String get storageBaseUrl => 'https://storage.googleapis.com';

  @override
  String get engineRevision => version ?? 'abc123';

  @override
  Directory getDownloadDir() => artifactDirectory;

  @override
  Directory getArtifactDirectory(String name) => artifactDirectory;

  @override
  Directory getCacheDir(String name, {bool shouldCreate = true}) {
    return artifactDirectory.childDirectory(name);
  }

  @override
  File getLicenseFile() {
    return artifactDirectory.childFile('LICENSE');
  }

  @override
  String? getVersionFor(String artifactName) => version;

  @override
  void setStampFor(String artifactName, String version) {
    onSetStamp(artifactName, version);
  }
}

class FakeVersionedPackageResolver extends Fake implements VersionedPackageResolver {
  final resolved = <List<String>>[];

  @override
  String resolveUrl(String packageName, String version) {
    resolved.add(<String>[packageName, version]);
    return '';
  }
}

class FakePubInvocation {
  FakePubInvocation({required this.outputMode});

  final PubOutputMode outputMode;
}

class FakePub extends Fake implements Pub {
  final invocations = <FakePubInvocation>[];
  int get calledGet => invocations.length;

  @override
  Future<void> get({
    PubContext? context,
    required FlutterProject project,
    bool upgrade = false,
    bool offline = false,
    String? flutterRootOverride,
    bool checkUpToDate = false,
    bool shouldSkipThirdPartyGenerator = true,
    bool printProgress = true,
    bool enforceLockfile = false,
    PubOutputMode outputMode = PubOutputMode.all,
  }) async {
    invocations.add(FakePubInvocation(outputMode: outputMode));
  }
}

class FakeCache extends Cache {
  FakeCache({
    required super.logger,
    required super.fileSystem,
    required super.platform,
    required super.osUtils,
  }) : super(artifacts: <ArtifactSet>[]);

  late File stampFile;

  @override
  File getStampFileFor(String artifactName) {
    return stampFile;
  }
}

class FakeAndroidSdk extends Fake implements AndroidSdk {
  var reinitialized = false;

  @override
  void reinitialize({FileSystem? fileSystem}) {
    reinitialized = true;
  }
}

class FakeArtifactUpdater extends Fake implements ArtifactUpdater {
  void Function(String, Uri, Directory)? onDownloadZipArchive;
  void Function(String, Uri, Directory)? onDownloadZipTarball;
  void Function(String, Uri, Directory)? onDownloadFile;

  @override
  Future<void> downloadZippedTarball(String message, Uri url, Directory location) async {
    onDownloadZipTarball?.call(message, url, location);
  }

  @override
  Future<void> downloadZipArchive(String message, Uri url, Directory location) async {
    onDownloadZipArchive?.call(message, url, location);
  }

  @override
  Future<void> downloadFile(String message, Uri url, Directory location) async {
    onDownloadFile?.call(message, url, location);
  }

  @override
  void removeDownloadedFiles() {}
}

class FakeArtifactUpdaterDownload extends ArtifactUpdater {
  FakeArtifactUpdaterDownload({
    required super.operatingSystemUtils,
    required super.logger,
    required super.fileSystem,
    required super.tempStorage,
    required super.httpClient,
    required super.platform,
    required super.allowedBaseUrls,
  });

  void addFiles(List<File> files) {
    downloadedFiles.addAll(files);
  }
}