pkgs/hooks_runner/test/test_data/transformer_test.dart

// Copyright (c) 2024, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

@OnPlatform({'mac-os': Timeout.factor(2), 'windows': Timeout.factor(10)})
library;

import 'dart:convert';
import 'dart:io';

import 'package:code_assets/code_assets.dart';
import 'package:data_assets/data_assets.dart';
import 'package:hooks/hooks.dart';
import 'package:test/test.dart';

import '../build_runner/helpers.dart';
import '../helpers.dart';

void main() async {
  const packageName = 'transformer';

  test(
    'transformer caching',
    () => inTempDir((tempUri) async {
      final packageUri = tempUri.resolve('$packageName/');
      await copyTestProjects(
        sourceUri: testDataUri.resolve('$packageName/'),
        targetUri: packageUri,
      );

      await runPubGet(workingDirectory: packageUri, logger: logger);

      final buildOutputUri = tempUri.resolve('build_output.json');
      final outputDirectory = tempUri.resolve('out/');
      await Directory.fromUri(outputDirectory).create();
      final outputDirectoryShared = tempUri.resolve('out_shared/');
      await Directory.fromUri(outputDirectoryShared).create();
      final testTempUri = tempUri.resolve('test1/');
      await Directory.fromUri(testTempUri).create();
      final dartUri = Uri.file(Platform.resolvedExecutable);

      late String stdout;
      late BuildOutput output;

      final targetOS = OS.current;
      Future<void> runBuild(Architecture architecture) async {
        final inputBuilder = BuildInputBuilder()
          ..setupShared(
            packageName: packageName,
            packageRoot: packageUri,
            outputFile: buildOutputUri,
            outputDirectoryShared: outputDirectoryShared,
          )
          ..config.setupBuild(linkingEnabled: false)
          ..addExtension(DataAssetsExtension())
          ..addExtension(
            CodeAssetExtension(
              targetArchitecture: architecture,
              targetOS: targetOS,
              macOS: targetOS == OS.macOS
                  ? MacOSCodeConfig(targetVersion: defaultMacOSVersion)
                  : null,
              linkModePreference: LinkModePreference.dynamic,
            ),
          );

        final buildInputUri = testTempUri.resolve('build_input.json');
        File.fromUri(
          buildInputUri,
        ).writeAsStringSync(jsonEncode(inputBuilder.json));

        final processResult = await Process.run(dartUri.toFilePath(), [
          'hook/build.dart',
          '--config=${buildInputUri.toFilePath()}',
        ], workingDirectory: packageUri.toFilePath());
        if (processResult.exitCode != 0) {
          print(processResult.stdout);
          print(processResult.stderr);
          print(processResult.exitCode);
        }
        expect(processResult.exitCode, 0);
        stdout = processResult.stdout as String;

        output = BuildOutput(
          json.decode(await File.fromUri(buildOutputUri).readAsString())
              as Map<String, Object?>,
        );
      }

      await runBuild(Architecture.x64);
      expect(
        stdout,
        stringContainsInOrder([
          'Transformed 10 files.',
          'Reused 0 cached files.',
        ]),
      );
      expect(
        output.assets.data,
        contains(
          DataAsset(
            file: outputDirectoryShared.resolve('data_transformed0.json'),
            name: 'data_transformed0.json',
            package: packageName,
          ),
        ),
      );
      expect(
        output.dependencies,
        containsAll([
          packageUri.resolve('data/'),
          packageUri.resolve('data/data0.json'),
        ]),
      );

      await File.fromUri(
        packageUri.resolve('data/data0.json'),
      ).writeAsString(jsonEncode({'foo': 'bar'}));

      // Run the build for a different architecture.
      // This should use the caching inside the hook.
      await runBuild(Architecture.arm64);
      expect(
        stdout,
        stringContainsInOrder([
          'Transformed 1 files.',
          'Reused 9 cached files.',
        ]),
      );
    }),
  );
}