packages/flutter_tools/test/android_preview_integration.shard/flutter_build_preview_sdk_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:flutter_tools/src/base/file_system.dart';
import 'package:flutter_tools/src/base/io.dart';

import '../integration.shard/test_utils.dart';
import '../src/common.dart';

void main() {
  late Directory tempDir;
  late String flutterBin;
  late Directory exampleAppDir;
  late Directory pluginDir;
  final RegExp compileSdkVersionMatch = RegExp(r'compileSdk\s*=?\s*[\w.]+');
  final String builtApkPath = <String>['build', 'app', 'outputs', 'flutter-apk', 'app-debug.apk']
      .join(platform.pathSeparator);

  setUp(() async {
    tempDir = createResolvedTempDirectorySync('flutter_plugin_test.');
    flutterBin = fileSystem.path.join(
      getFlutterRoot(),
      'bin',
      'flutter',
    );
    pluginDir = tempDir.childDirectory('aaa');
    exampleAppDir = pluginDir.childDirectory('example');

    processManager.runSync(<String>[
      flutterBin,
      ...getLocalEngineArguments(),
      'create',
      '--template=plugin',
      '--platforms=android',
      'aaa',
    ], workingDirectory: tempDir.path);
  });

  tearDown(() async {
    tryToDelete(tempDir);
  });

  test(
    'build succeeds targeting string compileSdkVersion',
    () async {
      final File buildGradleFile = exampleAppDir.childDirectory('android').childDirectory('app').childFile('build.gradle');
      // write a build.gradle with compileSdkVersion as `android-UpsideDownCake` which is a string preview version
      buildGradleFile.writeAsStringSync(
        buildGradleFile.readAsStringSync().replaceFirst(compileSdkVersionMatch, 'compileSdkVersion = "android-UpsideDownCake"'),
        flush: true
      );
      expect(buildGradleFile.readAsStringSync(), contains('compileSdkVersion = "android-UpsideDownCake"'));

      final ProcessResult result = await processManager.run(<String>[
        flutterBin,
        ...getLocalEngineArguments(),
        'build',
        'apk',
        '--debug',
      ], workingDirectory: exampleAppDir.path);
      expect(exampleAppDir.childDirectory('build')
          .childDirectory('app')
          .childDirectory('outputs')
          .childDirectory('apk')
          .childDirectory('debug')
          .childFile('app-debug.apk').existsSync(), true);
      expect(result.stdout, contains('Built $builtApkPath'));
    },
  );

  test(
    'build succeeds targeting string compileSdkPreview',
    () async {
      final File buildGradleFile = exampleAppDir.childDirectory('android').childDirectory('app').childFile('build.gradle');
      // write a build.gradle with compileSdkPreview as `UpsideDownCake` which is a string preview version
      buildGradleFile.writeAsStringSync(
        buildGradleFile.readAsStringSync().replaceFirst(compileSdkVersionMatch, 'compileSdkPreview = "UpsideDownCake"'),
        flush: true
      );
      expect(buildGradleFile.readAsStringSync(), contains('compileSdkPreview = "UpsideDownCake"'));

      final ProcessResult result = await processManager.run(<String>[
        flutterBin,
        ...getLocalEngineArguments(),
        'build',
        'apk',
        '--debug',
      ], workingDirectory: exampleAppDir.path);
      expect(exampleAppDir.childDirectory('build')
          .childDirectory('app')
          .childDirectory('outputs')
          .childDirectory('apk')
          .childDirectory('debug')
          .childFile('app-debug.apk').existsSync(), true);
      expect(result.stdout, contains('Built $builtApkPath'));
    },
  );

  test(
    'build succeeds when both example app and plugin target compileSdkPreview',
        () async {
      final File appBuildGradleFile = exampleAppDir.childDirectory('android').childDirectory('app').childFile('build.gradle');
      // write a build.gradle with compileSdkPreview as `UpsideDownCake` which is a string preview version
      appBuildGradleFile.writeAsStringSync(
          appBuildGradleFile.readAsStringSync().replaceFirst(compileSdkVersionMatch, 'compileSdkPreview = "UpsideDownCake"'),
          flush: true
      );
      expect(appBuildGradleFile.readAsStringSync(), contains('compileSdkPreview = "UpsideDownCake"'));

      final File pluginBuildGradleFile = pluginDir.childDirectory('android').childFile('build.gradle');
      // change the plugin build.gradle to use a preview compile sdk version
      pluginBuildGradleFile.writeAsStringSync(
        pluginBuildGradleFile.readAsStringSync().replaceFirst(compileSdkVersionMatch, 'compileSdkPreview "UpsideDownCake"'),
        flush: true
      );
      expect(pluginBuildGradleFile.readAsStringSync(), contains('compileSdkPreview "UpsideDownCake"'));

      final ProcessResult result = await processManager.run(<String>[
        flutterBin,
        ...getLocalEngineArguments(),
        'build',
        'apk',
        '--debug',
      ], workingDirectory: exampleAppDir.path);
      expect(exampleAppDir.childDirectory('build')
          .childDirectory('app')
          .childDirectory('outputs')
          .childDirectory('apk')
          .childDirectory('debug')
          .childFile('app-debug.apk').existsSync(), true);
      expect(result.stdout, contains('Built $builtApkPath'));
    },
  );
}