tools/pkg/engine_build_configs/test/build_config_loader_test.dart

// Copyright 2013 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:engine_build_configs/src/build_config.dart';
import 'package:engine_build_configs/src/build_config_loader.dart';
import 'package:file/file.dart';
import 'package:file/memory.dart';
import 'package:litetest/litetest.dart';

import 'fixtures.dart' as fixtures;

int main() {
  test('BuildConfigLoader can load a build config', () {
    final FileSystem fs = MemoryFileSystem();
    final String buildConfigPath = fs.path.join('flutter', 'ci', 'builders');
    final Directory buildConfigsDir = fs.directory(buildConfigPath);
    final File buildConfigFile = buildConfigsDir.childFile(
      'linux_test_build.json',
    );
    buildConfigFile.create(recursive: true);
    buildConfigFile.writeAsStringSync(fixtures.buildConfigJson);

    final BuildConfigLoader loader = BuildConfigLoader(
      buildConfigsDir: buildConfigsDir,
    );

    expect(loader.configs, isNotNull);
    expect(loader.errors, isEmpty);
    expect(loader.configs['linux_test_build'], isNotNull);
  });

  test('BuildConfigLoader gives an empty config when no configs found', () {
    final FileSystem fs = MemoryFileSystem();
    final String buildConfigPath = fs.path.join(
      'flutter', 'ci', 'builders', 'linux_test_build.json',
    );
    final Directory buildConfigsDir = fs.directory(buildConfigPath);
    final BuildConfigLoader loader = BuildConfigLoader(
      buildConfigsDir: buildConfigsDir,
    );

    expect(loader.configs, isNotNull);
    expect(loader.errors[0], equals(
      'flutter/ci/builders/linux_test_build.json does not exist.',
    ));
    expect(loader.configs, equals(<String, BuildConfig>{}));
  });
  return 0;
}