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https://github.com/flutter/flutter
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[flutter_tools] forward flutter format to dart format and deprecate (#57829)
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@ -4,36 +4,18 @@
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import 'dart:async';
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import 'package:args/args.dart';
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import '../artifacts.dart';
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import '../base/common.dart';
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import '../base/process.dart';
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import '../dart/sdk.dart';
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import '../globals.dart' as globals;
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import '../runner/flutter_command.dart';
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class FormatCommand extends FlutterCommand {
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FormatCommand() {
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argParser.addFlag('dry-run',
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abbr: 'n',
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help: 'Show which files would be modified but make no changes.',
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defaultsTo: false,
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negatable: false,
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);
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argParser.addFlag('set-exit-if-changed',
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help: 'Return exit code 1 if there are any formatting changes.',
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defaultsTo: false,
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negatable: false,
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);
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argParser.addFlag('machine',
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abbr: 'm',
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help: 'Produce machine-readable JSON output.',
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defaultsTo: false,
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negatable: false,
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);
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argParser.addOption('line-length',
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abbr: 'l',
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help: 'Wrap lines longer than this length. Defaults to 80 characters.',
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defaultsTo: '80',
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);
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}
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@override
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ArgParser get argParser => _argParser;
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final ArgParser _argParser = ArgParser.allowAnything();
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@override
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final String name = 'format';
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@ -48,34 +30,25 @@ class FormatCommand extends FlutterCommand {
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String get invocation => '${runner.executableName} $name <one or more paths>';
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@override
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Future<FlutterCommandResult> runCommand() async {
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if (argResults.rest.isEmpty) {
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throwToolExit(
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'No files specified to be formatted.\n'
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'\n'
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'To format all files in the current directory tree:\n'
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'${runner.executableName} $name .\n'
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'\n'
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'$usage'
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);
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}
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bool get shouldUpdateCache => false;
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final String dartfmt = sdkBinaryName('dartfmt');
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@override
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Future<FlutterCommandResult> runCommand() async {
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final String dartBinary = globals.artifacts.getArtifactPath(Artifact.engineDartBinary);
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globals.printError(
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'"flutter format" is deprecated and will be removed in a'
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' future release, use "dart format" instead.'
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);
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final List<String> command = <String>[
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dartfmt,
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if (boolArg('dry-run')) '-n',
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if (boolArg('machine')) '-m',
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if (argResults['line-length'] != null) '-l ${argResults['line-length']}',
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if (!boolArg('dry-run') && !boolArg('machine')) '-w',
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if (boolArg('set-exit-if-changed')) '--set-exit-if-changed',
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dartBinary,
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'format',
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...argResults.rest,
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];
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final int result = await processUtils.stream(command);
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if (result != 0) {
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throwToolExit('Formatting failed: $result', exitCode: result);
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throwToolExit('', exitCode: result);
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}
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return FlutterCommandResult.success();
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}
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}
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@ -1,104 +0,0 @@
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// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:args/command_runner.dart';
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import 'package:flutter_tools/src/base/file_system.dart';
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import 'package:flutter_tools/src/cache.dart';
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import 'package:flutter_tools/src/commands/format.dart';
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import 'package:flutter_tools/src/globals.dart' as globals;
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import '../../src/common.dart';
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import '../../src/context.dart';
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void main() {
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group('format', () {
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Directory tempDir;
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setUp(() {
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Cache.disableLocking();
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tempDir = globals.fs.systemTempDirectory.createTempSync('flutter_tools_format_test.');
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});
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tearDown(() {
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tryToDelete(tempDir);
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});
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testUsingContext('a file', () async {
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final String projectPath = await createProject(tempDir);
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final File srcFile = globals.fs.file(globals.fs.path.join(projectPath, 'lib', 'main.dart'));
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final String original = srcFile.readAsStringSync();
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srcFile.writeAsStringSync(original.replaceFirst('main()', 'main( )'));
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final FormatCommand command = FormatCommand();
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final CommandRunner<void> runner = createTestCommandRunner(command);
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await runner.run(<String>['format', srcFile.path]);
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final String formatted = srcFile.readAsStringSync();
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expect(formatted, original);
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});
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testUsingContext('dry-run', () async {
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final String projectPath = await createProject(tempDir);
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final File srcFile = globals.fs.file(
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globals.fs.path.join(projectPath, 'lib', 'main.dart'));
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final String nonFormatted = srcFile.readAsStringSync().replaceFirst(
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'main()', 'main( )');
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srcFile.writeAsStringSync(nonFormatted);
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final FormatCommand command = FormatCommand();
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final CommandRunner<void> runner = createTestCommandRunner(command);
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await runner.run(<String>['format', '--dry-run', srcFile.path]);
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final String shouldNotFormatted = srcFile.readAsStringSync();
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expect(shouldNotFormatted, nonFormatted);
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});
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testUsingContext('dry-run with set-exit-if-changed', () async {
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final String projectPath = await createProject(tempDir);
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final File srcFile = globals.fs.file(
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globals.fs.path.join(projectPath, 'lib', 'main.dart'));
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final String nonFormatted = srcFile.readAsStringSync().replaceFirst(
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'main()', 'main( )');
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srcFile.writeAsStringSync(nonFormatted);
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final FormatCommand command = FormatCommand();
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final CommandRunner<void> runner = createTestCommandRunner(command);
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expect(runner.run(<String>[
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'format', '--dry-run', '--set-exit-if-changed', srcFile.path,
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]), throwsException);
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final String shouldNotFormatted = srcFile.readAsStringSync();
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expect(shouldNotFormatted, nonFormatted);
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});
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testUsingContext('line-length', () async {
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const int lineLengthShort = 50;
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const int lineLengthLong = 120;
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final String projectPath = await createProject(tempDir);
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final File srcFile = globals.fs.file(
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globals.fs.path.join(projectPath, 'lib', 'main.dart'));
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final String nonFormatted = srcFile.readAsStringSync();
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srcFile.writeAsStringSync(
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nonFormatted.replaceFirst('main()',
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'main(anArgument1, anArgument2, anArgument3, anArgument4, anArgument5)'));
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final String nonFormattedWithLongLine = srcFile.readAsStringSync();
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final FormatCommand command = FormatCommand();
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final CommandRunner<void> runner = createTestCommandRunner(command);
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await runner.run(<String>['format', '--line-length', '$lineLengthLong', srcFile.path]);
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final String notFormatted = srcFile.readAsStringSync();
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expect(nonFormattedWithLongLine, notFormatted);
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await runner.run(<String>['format', '--line-length', '$lineLengthShort', srcFile.path]);
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final String shouldFormatted = srcFile.readAsStringSync();
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expect(nonFormattedWithLongLine, isNot(shouldFormatted));
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});
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});
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}
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@ -0,0 +1,38 @@
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// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:args/command_runner.dart';
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import 'package:file/memory.dart';
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import 'package:flutter_tools/src/artifacts.dart';
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import 'package:flutter_tools/src/base/file_system.dart';
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import 'package:flutter_tools/src/commands/format.dart';
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import 'package:flutter_tools/src/globals.dart' as globals;
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import '../../src/common.dart';
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import '../../src/context.dart';
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void main() {
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testUsingContext('flutter format forward all arguments to dart format and '
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'prints deprecation warning', () async {
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final CommandRunner<void> runner = CommandRunner<void>('flutter', 'test')
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..addCommand(FormatCommand());
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await runner.run(<String>['format', 'a', 'b', 'c']);
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expect(testLogger.errorText, contains('"flutter format" is deprecated'));
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expect((globals.processManager as FakeProcessManager).hasRemainingExpectations, false);
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}, overrides: <Type, Generator>{
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FileSystem: () => MemoryFileSystem.test(),
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ProcessManager: () => FakeProcessManager.list(<FakeCommand>[
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FakeCommand(
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command: <String>[
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globals.artifacts.getArtifactPath(Artifact.engineDartBinary),
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'format',
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'a',
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'b',
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'c',
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],
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)
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])
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});
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}
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