Add tests for migrate command methods (#103466)

packages/flutter_tools/lib/src/commands/migrate.dart

@@ -2,38 +2,20 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// import 'package:process/process.dart';
 
-// import '../base/file_system.dart';
 import '../base/logger.dart';
-// import '../base/platform.dart';
 import '../base/terminal.dart';
 import '../migrate/migrate_utils.dart';
 import '../runner/flutter_command.dart';
-// TODO(garyq): Add each of these back in as they land.
-// import 'migrate_abandon.dart';
-// import 'migrate_apply.dart';
-// import 'migrate_resolve_conflicts.dart';
-// import 'migrate_start.dart';
-// import 'migrate_status.dart';
+
 
 /// Base command for the migration tool.
 class MigrateCommand extends FlutterCommand {
   MigrateCommand({
-    // bool verbose = false,
     required this.logger,
-    // TODO(garyq): Add each of these back in as they land.
-    // required FileSystem fileSystem,
-    // required Terminal terminal,
-    // required Platform platform,
-    // required ProcessManager processManager,
+    // TODO(garyq): Add each parameters in as subcommands land.
   }) {
-    // TODO(garyq): Add each of these back in as they land.
-    // addSubcommand(MigrateAbandonCommand(logger: logger, fileSystem: fileSystem, terminal: terminal, platform: platform, processManager: processManager));
-    // addSubcommand(MigrateApplyCommand(verbose: verbose, logger: logger, fileSystem: fileSystem, terminal: terminal, platform: platform, processManager: processManager));
-    // addSubcommand(MigrateResolveConflictsCommand(logger: logger, fileSystem: fileSystem, terminal: terminal));
-    // addSubcommand(MigrateStartCommand(verbose: verbose, logger: logger, fileSystem: fileSystem, platform: platform, processManager: processManager));
-    // addSubcommand(MigrateStatusCommand(verbose: verbose, logger: logger, fileSystem: fileSystem, platform: platform, processManager: processManager));
+    // TODO(garyq): Add subcommands.
   }
 
   final Logger logger;

packages/flutter_tools/lib/src/migrate/migrate_utils.dart

@@ -242,32 +242,32 @@ class MigrateUtils {
     bool exit = true,
     bool silent = false
   }) {
-    if (!allowedExitCodes.contains(result.exitCode) && !allowedExitCodes.contains(-1)) {
-      if (!silent) {
-        _logger.printError('Command encountered an error with exit code ${result.exitCode}.');
-        if (commandDescription != null) {
-          _logger.printError('Command:');
-          _logger.printError(commandDescription, indent: 2);
-        }
-        _logger.printError('Stdout:');
-        _logger.printError(result.stdout, indent: 2);
-        _logger.printError('Stderr:');
-        _logger.printError(result.stderr, indent: 2);
-      }
-      if (exit) {
-        throwToolExit('Command failed with exit code ${result.exitCode}', exitCode: result.exitCode);
-      }
-      return false;
+    if (allowedExitCodes.contains(result.exitCode) || allowedExitCodes.contains(-1)) {
+      return true;
     }
-    return true;
+    if (!silent) {
+      _logger.printError('Command encountered an error with exit code ${result.exitCode}.');
+      if (commandDescription != null) {
+        _logger.printError('Command:');
+        _logger.printError(commandDescription, indent: 2);
+      }
+      _logger.printError('Stdout:');
+      _logger.printError(result.stdout, indent: 2);
+      _logger.printError('Stderr:');
+      _logger.printError(result.stderr, indent: 2);
+    }
+    if (exit) {
+      throwToolExit('Command failed with exit code ${result.exitCode}', exitCode: result.exitCode);
+    }
+    return false;
   }
 
   /// Returns true if the file does not contain any git conflit markers.
   bool conflictsResolved(String contents) {
-    if (contents.contains('>>>>>>>') && contents.contains('=======') && contents.contains('<<<<<<<')) {
-      return false;
-    }
-    return true;
+    final bool hasMarker = contents.contains('>>>>>>>') ||
+                           contents.contains('=======') ||
+                           contents.contains('<<<<<<<');
+    return !hasMarker;
   }
 }
 

packages/flutter_tools/test/general.shard/migrate/migrate_manifest_test.dart

@@ -4,6 +4,7 @@
 
 import 'package:file/memory.dart';
 import 'package:flutter_tools/src/base/file_system.dart';
+import 'package:flutter_tools/src/base/logger.dart';
 import 'package:flutter_tools/src/migrate/migrate_manifest.dart';
 import 'package:flutter_tools/src/migrate/migrate_result.dart';
 import 'package:flutter_tools/src/migrate/migrate_utils.dart';
@@ -13,12 +14,119 @@ import '../../src/common.dart';
 void main() {
   late FileSystem fileSystem;
   late File manifestFile;
+  late BufferLogger logger;
 
   setUpAll(() {
     fileSystem = MemoryFileSystem.test();
+    logger = BufferLogger.test();
     manifestFile = fileSystem.file('.migrate_manifest');
   });
 
+  group('checkAndPrintMigrateStatus', () {
+    testWithoutContext('empty MigrateResult produces empty output', () async {
+      final Directory workingDir = fileSystem.directory('migrate_working_dir');
+      workingDir.createSync(recursive: true);
+      final MigrateManifest manifest = MigrateManifest(migrateRootDir: workingDir, migrateResult: MigrateResult(
+        mergeResults: <MergeResult>[],
+        addedFiles: <FilePendingMigration>[],
+        deletedFiles: <FilePendingMigration>[],
+        mergeTypeMap: <String, MergeType>{},
+        diffMap: <String, DiffResult>{},
+        tempDirectories: <Directory>[],
+        sdkDirs: <String, Directory>{},
+      ));
+
+      checkAndPrintMigrateStatus(manifest, workingDir, warnConflict: true, logger: logger);
+
+      expect(logger.statusText, contains('\n'));
+    });
+
+    testWithoutContext('populated MigrateResult produces correct output', () async {
+      final Directory workingDir = fileSystem.directory('migrate_working_dir');
+      workingDir.createSync(recursive: true);
+      final MigrateManifest manifest = MigrateManifest(migrateRootDir: workingDir, migrateResult: MigrateResult(
+        mergeResults: <MergeResult>[
+          StringMergeResult.explicit(
+            localPath: 'merged_file',
+            mergedString: 'str',
+            hasConflict: false,
+            exitCode: 0,
+          ),
+          StringMergeResult.explicit(
+            localPath: 'conflict_file',
+            mergedString: 'hello\nwow a bunch of lines\n<<<<<<<\n=======\n<<<<<<<\nhi\n',
+            hasConflict: true,
+            exitCode: 1,
+          ),
+        ],
+        addedFiles: <FilePendingMigration>[FilePendingMigration('added_file', fileSystem.file('added_file'))],
+        deletedFiles: <FilePendingMigration>[FilePendingMigration('deleted_file', fileSystem.file('deleted_file'))],
+        // The following are ignored by the manifest.
+        mergeTypeMap: <String, MergeType>{'test': MergeType.threeWay},
+        diffMap: <String, DiffResult>{},
+        tempDirectories: <Directory>[],
+        sdkDirs: <String, Directory>{},
+      ));
+
+      final File conflictFile = workingDir.childFile('conflict_file');
+      conflictFile.writeAsStringSync('hello\nwow a bunch of lines\n<<<<<<<\n=======\n<<<<<<<\nhi\n', flush: true);
+
+      checkAndPrintMigrateStatus(manifest, workingDir, warnConflict: true, logger: logger);
+
+      expect(logger.statusText, contains('''
+Added files:
+  - added_file
+Deleted files:
+  - deleted_file
+Modified files:
+  - conflict_file
+  - merged_file
+'''));
+    });
+
+    testWithoutContext('populated MigrateResult detects fixed conflict', () async {
+      final Directory workingDir = fileSystem.directory('migrate_working_dir');
+      workingDir.createSync(recursive: true);
+      final MigrateManifest manifest = MigrateManifest(migrateRootDir: workingDir, migrateResult: MigrateResult(
+        mergeResults: <MergeResult>[
+          StringMergeResult.explicit(
+            localPath: 'merged_file',
+            mergedString: 'str',
+            hasConflict: false,
+            exitCode: 0,
+          ),
+          StringMergeResult.explicit(
+            localPath: 'conflict_file',
+            mergedString: 'hello\nwow a bunch of lines\n<<<<<<<\n=======\n<<<<<<<\nhi\n',
+            hasConflict: true,
+            exitCode: 1,
+          ),
+        ],
+        addedFiles: <FilePendingMigration>[FilePendingMigration('added_file', fileSystem.file('added_file'))],
+        deletedFiles: <FilePendingMigration>[FilePendingMigration('deleted_file', fileSystem.file('deleted_file'))],
+        // The following are ignored by the manifest.
+        mergeTypeMap: <String, MergeType>{'test': MergeType.threeWay},
+        diffMap: <String, DiffResult>{},
+        tempDirectories: <Directory>[],
+        sdkDirs: <String, Directory>{},
+      ));
+
+      final File conflictFile = workingDir.childFile('conflict_file');
+      conflictFile.writeAsStringSync('hello\nwow a bunch of lines\nhi\n', flush: true);
+
+      checkAndPrintMigrateStatus(manifest, workingDir, warnConflict: true, logger: logger);
+      expect(logger.statusText, contains('''
+Added files:
+  - added_file
+Deleted files:
+  - deleted_file
+Modified files:
+  - conflict_file
+  - merged_file
+'''));
+    });
+  });
+
   group('manifest file parsing', () {
     testWithoutContext('empty fails', () async {
       manifestFile.writeAsStringSync('');

packages/flutter_tools/test/integration.shard/migrate_command_test.dart

@@ -0,0 +1,96 @@
+// 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 'package:file/file.dart';
+import 'package:flutter_tools/src/base/file_system.dart';
+import 'package:flutter_tools/src/base/logger.dart';
+import 'package:flutter_tools/src/base/process.dart';
+import 'package:flutter_tools/src/commands/migrate.dart';
+import 'package:flutter_tools/src/globals.dart' as globals;
+import 'package:flutter_tools/src/migrate/migrate_utils.dart';
+
+import '../src/common.dart';
+
+void main() {
+  BufferLogger logger;
+  FileSystem fileSystem;
+  Directory projectRoot;
+  String projectRootPath;
+  ProcessUtils processUtils;
+  MigrateUtils utils;
+
+  setUpAll(() async {
+    fileSystem = globals.localFileSystem;
+    logger = BufferLogger.test();
+    utils = MigrateUtils(
+      logger: logger,
+      fileSystem: fileSystem,
+      platform: globals.platform,
+      processManager: globals.processManager,
+    );
+    processUtils = ProcessUtils(processManager: globals.processManager, logger: logger);
+  });
+
+  group('git', () {
+    setUp(() async {
+      projectRoot = fileSystem.systemTempDirectory.createTempSync('flutter_migrate_command_test');
+      projectRoot.createSync(recursive: true);
+      projectRootPath = projectRoot.path;
+    });
+
+    tearDown(() async {
+      tryToDelete(projectRoot);
+    });
+
+    testWithoutContext('isGitRepo', () async {
+      expect(projectRoot.existsSync(), true);
+      expect(projectRoot.childDirectory('.git').existsSync(), false);
+
+      expect(await gitRepoExists(projectRootPath, logger, utils), false);
+      expect(logger.statusText, contains('Project is not a git repo. Please initialize a git repo and try again.'));
+
+      await utils.gitInit(projectRootPath);
+      expect(projectRoot.childDirectory('.git').existsSync(), true);
+
+      expect(await gitRepoExists(projectRootPath, logger, utils), true);
+    });
+
+    testWithoutContext('printCommandText produces formatted output', () async {
+      printCommandText('some command --help', logger);
+
+      expect(logger.statusText, contains(r'  $ some command --help'));
+    });
+
+    testWithoutContext('hasUncommittedChanges false on clean repo', () async {
+      expect(projectRoot.existsSync(), true);
+      expect(projectRoot.childDirectory('.git').existsSync(), false);
+      await utils.gitInit(projectRootPath);
+      expect(projectRoot.childDirectory('.git').existsSync(), true);
+
+      projectRoot.childFile('.gitignore')
+        ..createSync()
+        ..writeAsStringSync('ignored_file.dart', flush: true);
+
+      await processUtils.run(<String>['git', 'add', '.'], workingDirectory: projectRootPath);
+      await processUtils.run(<String>['git', 'commit', '-m', 'Initial commit'], workingDirectory: projectRootPath);
+
+      expect(await hasUncommittedChanges(projectRootPath, logger, utils), false);
+    });
+
+    testWithoutContext('hasUncommittedChanges true on dirty repo', () async {
+      expect(projectRoot.existsSync(), true);
+      expect(projectRoot.childDirectory('.git').existsSync(), false);
+      await utils.gitInit(projectRootPath);
+      expect(projectRoot.childDirectory('.git').existsSync(), true);
+
+      projectRoot.childFile('some_file.dart')
+        ..createSync()
+        ..writeAsStringSync('void main() {}', flush: true);
+
+      expect(await hasUncommittedChanges(projectRootPath, logger, utils), true);
+    });
+  });
+}

packages/flutter_tools/test/integration.shard/migrate_utils_test.dart

@@ -40,6 +40,10 @@ void main() {
       projectRootPath = projectRoot.path;
     });
 
+    tearDown(() async {
+      tryToDelete(projectRoot);
+    });
+
     testWithoutContext('init', () async {
       expect(projectRoot.existsSync(), true);
       expect(projectRoot.childDirectory('.git').existsSync(), false);
@@ -220,4 +224,15 @@ void main() {
       projectRoot.deleteSync(recursive: true);
     });
   });
+
+  testWithoutContext('conflictsResolved', () async {
+    expect(utils.conflictsResolved(''), true);
+    expect(utils.conflictsResolved('hello'), true);
+    expect(utils.conflictsResolved('hello\n'), true);
+    expect(utils.conflictsResolved('hello\nwow a bunch of lines\n\nhi\n'), true);
+    expect(utils.conflictsResolved('hello\nwow a bunch of lines\n>>>>>>>\nhi\n'), false);
+    expect(utils.conflictsResolved('hello\nwow a bunch of lines\n=======\nhi\n'), false);
+    expect(utils.conflictsResolved('hello\nwow a bunch of lines\n<<<<<<<\nhi\n'), false);
+    expect(utils.conflictsResolved('hello\nwow a bunch of lines\n<<<<<<<\n=======\n<<<<<<<\nhi\n'), false);
+  });
 }