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// 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.
// ignore_for_file: implementation_imports
import 'dart:isolate';
import 'package:build/build.dart';
import 'package:build_config/build_config.dart';
import 'package:build_modules/build_modules.dart';
import 'package:build_modules/builders.dart';
import 'package:build_modules/src/module_builder.dart';
import 'package:build_modules/src/platform.dart';
import 'package:build_runner/build_runner.dart' as build_runner;
import 'package:build_runner_core/build_runner_core.dart' as core;
import 'package:build_test/builder.dart';
import 'package:build_test/src/debug_test_builder.dart';
import 'package:build_web_compilers/build_web_compilers.dart';
import 'package:build_web_compilers/builders.dart';
import 'package:build_web_compilers/src/dev_compiler_bootstrap.dart';
import 'package:path/path.dart' as path; // ignore: package_path_import
import 'package:test_core/backend.dart'; // ignore: deprecated_member_use
import 'package:build_runner_core/src/util/constants.dart' as core;
const String ddcBootstrapExtension = '.dart.bootstrap.js';
const String jsEntrypointExtension = '.dart.js';
const String jsEntrypointSourceMapExtension = '.dart.js.map';
const String jsEntrypointArchiveExtension = '.dart.js.tar.gz';
const String digestsEntrypointExtension = '.digests';
const String jsModuleErrorsExtension = '.ddc.js.errors';
const String jsModuleExtension = '.ddc.js';
const String jsSourceMapExtension = '.ddc.js.map';
const String kReleaseFlag = 'release';
const String kProfileFlag = 'profile';
final DartPlatform flutterWebPlatform = DartPlatform.register('flutter_web', <String>[
'async',
'collection',
'convert',
'core',
'developer',
'html',
'html_common',
'indexed_db',
'js',
'js_util',
'math',
'svg',
'typed_data',
'web_audio',
'web_gl',
'web_sql',
'_internal',
// Flutter web specific libraries.
'ui',
'_engine',
]);
/// The builders required to compile a Flutter application to the web.
final List<core.BuilderApplication> builders = <core.BuilderApplication>[
core.apply(
'flutter_tools:test_bootstrap',
<BuilderFactory>[
(BuilderOptions options) => const DebugTestBuilder(),
(BuilderOptions options) => const FlutterWebTestBootstrapBuilder(),
],
core.toRoot(),
hideOutput: true,
defaultGenerateFor: const InputSet(
include: <String>[
'test/**',
],
),
),
core.apply(
'flutter_tools:module_library',
<Builder Function(BuilderOptions)>[moduleLibraryBuilder],
core.toAllPackages(),
isOptional: true,
hideOutput: true,
appliesBuilders: <String>['flutter_tools:module_cleanup']),
core.apply(
'flutter_tools:ddc_modules',
<Builder Function(BuilderOptions)>[
(BuilderOptions options) => MetaModuleBuilder(flutterWebPlatform),
(BuilderOptions options) => MetaModuleCleanBuilder(flutterWebPlatform),
(BuilderOptions options) => ModuleBuilder(flutterWebPlatform),
],
core.toNoneByDefault(),
isOptional: true,
hideOutput: true,
appliesBuilders: <String>['flutter_tools:module_cleanup']),
core.apply(
'flutter_tools:ddc',
<Builder Function(BuilderOptions)>[
(BuilderOptions builderOptions) => KernelBuilder(
platformSdk: builderOptions.config['flutterWebSdk'] as String,
summaryOnly: true,
sdkKernelPath: path.join('kernel', 'flutter_ddc_sdk.dill'),
outputExtension: ddcKernelExtension,
platform: flutterWebPlatform,
librariesPath: path.absolute(path.join(builderOptions.config['flutterWebSdk'] as String, 'libraries.json')),
kernelTargetName: 'ddc',
useIncrementalCompiler: true,
trackUnusedInputs: true,
experiments: <String>['non-nullable'], // ignore: deprecated_member_use
),
(BuilderOptions builderOptions) => DevCompilerBuilder(
useIncrementalCompiler: true,
trackUnusedInputs: true,
platform: flutterWebPlatform,
platformSdk: builderOptions.config['flutterWebSdk'] as String,
sdkKernelPath: path.url.join('kernel', 'flutter_ddc_sdk.dill'),
experiments: <String>['non-nullable'],
librariesPath: path.absolute(path.join(builderOptions.config['flutterWebSdk'] as String, 'libraries.json')),
),
],
core.toAllPackages(),
isOptional: true,
hideOutput: true,
appliesBuilders: <String>['flutter_tools:ddc_modules']),
core.apply(
'flutter_tools:test_entrypoint',
<BuilderFactory>[
(BuilderOptions options) => const FlutterWebTestEntrypointBuilder(),
],
core.toRoot(),
hideOutput: true,
defaultGenerateFor: const InputSet(
include: <String>[
'test/**_test.dart.browser_test.dart',
],
),
),
core.applyPostProcess('flutter_tools:module_cleanup', moduleCleanup,
defaultGenerateFor: const InputSet()),
];
/// The entry point to this build script.
Future<void> main(List<String> args, [SendPort sendPort]) async {
core.overrideGeneratedOutputDirectory('flutter_web');
final int result = await build_runner.run(args, builders);
sendPort?.send(result);
}
/// A ddc-only entry point builder that respects the Flutter target flag.
class FlutterWebTestEntrypointBuilder implements Builder {
const FlutterWebTestEntrypointBuilder();
@override
Map<String, List<String>> get buildExtensions => const <String, List<String>>{
'.dart': <String>[
ddcBootstrapExtension,
jsEntrypointExtension,
jsEntrypointSourceMapExtension,
jsEntrypointArchiveExtension,
digestsEntrypointExtension,
],
};
@override
Future<void> build(BuildStep buildStep) async {
log.info('building for target ${buildStep.inputId.path}');
await bootstrapDdc(
buildStep,
platform: flutterWebPlatform,
skipPlatformCheck: true,
);
}
}
/// Bootstraps the test entry point.
class FlutterWebTestBootstrapBuilder implements Builder {
const FlutterWebTestBootstrapBuilder();
@override
Map<String, List<String>> get buildExtensions => const <String, List<String>>{
'_test.dart': <String>[
'_test.dart.browser_test.dart',
],
};
@override
Future<void> build(BuildStep buildStep) async {
final AssetId id = buildStep.inputId;
final String contents = await buildStep.readAsString(id);
final String assetPath = id.pathSegments.first == 'lib'
? path.url.join('packages', id.package, id.path)
: id.path;
final Uri testUrl = path.toUri(path.absolute(assetPath));
final Metadata metadata = parseMetadata(
assetPath, contents, Runtime.builtIn.map((Runtime runtime) => runtime.name).toSet());
if (metadata.testOn.evaluate(SuitePlatform(Runtime.chrome))) {
await buildStep.writeAsString(id.addExtension('.browser_test.dart'), '''
// @dart = 2.8
import 'dart:ui' as ui;
import 'dart:html';
import 'dart:js';
import 'package:stream_channel/stream_channel.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:test_api/src/backend/stack_trace_formatter.dart'; // ignore: implementation_imports
import 'package:test_api/src/remote_listener.dart'; // ignore: implementation_imports
import 'package:test_api/src/suite_channel_manager.dart'; // ignore: implementation_imports
import "${path.url.basename(id.path)}" as test;
Future<void> main() async {
// Extra initialization for flutter_web.
// The following parameters are hard-coded in Flutter's test embedder. Since
// we don't have an embedder yet this is the lowest-most layer we can put
// this stuff in.
ui.debugEmulateFlutterTesterEnvironment = true;
await ui.webOnlyInitializePlatform();
webGoldenComparator = DefaultWebGoldenComparator(Uri.parse('$testUrl'));
// TODO(flutterweb): remove need for dynamic cast.
(ui.window as dynamic).debugOverrideDevicePixelRatio(3.0);
(ui.window as dynamic).webOnlyDebugPhysicalSizeOverride = const ui.Size(2400, 1800);
internalBootstrapBrowserTest(() => test.main);
}
void internalBootstrapBrowserTest(Function getMain()) {
var channel = serializeSuite(getMain, hidePrints: false);
postMessageChannel().pipe(channel);
}
StreamChannel serializeSuite(Function getMain(),
{bool hidePrints = true, Future beforeLoad()}) =>
RemoteListener.start(getMain,
hidePrints: hidePrints, beforeLoad: beforeLoad);
StreamChannel suiteChannel(String name) {
var manager = SuiteChannelManager.current;
if (manager == null) {
throw StateError('suiteChannel() may only be called within a test worker.');
}
return manager.connectOut(name);
}
StreamChannel postMessageChannel() {
var controller = StreamChannelController(sync: true);
window.onMessage.firstWhere((message) {
return message.origin == window.location.origin && message.data == "port";
}).then((message) {
var port = message.ports.first;
var portSubscription = port.onMessage.listen((message) {
controller.local.sink.add(message.data);
});
controller.local.stream.listen((data) {
port.postMessage({"data": data});
}, onDone: () {
port.postMessage({"event": "done"});
portSubscription.cancel();
});
});
context['parent'].callMethod('postMessage', [
JsObject.jsify({"href": window.location.href, "ready": true}),
window.location.origin,
]);
return controller.foreign;
}
''');
}
}
}