| // Copyright (c) 2021, 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. |
| |
| // @dart = 2.7 |
| |
| import 'dart:io' hide Link; |
| import 'dart:isolate'; |
| |
| import 'package:async_helper/async_helper.dart'; |
| import 'package:compiler/src/compiler.dart'; |
| import 'package:expect/expect.dart'; |
| import 'package:kernel/ast.dart' as ir; |
| |
| import '../equivalence/id_equivalence_helper.dart'; |
| import '../deferred_loading/deferred_loading_test_helper.dart'; |
| |
| /// Add in options to pass to the compiler like |
| /// `Flags.disableTypeInference` or `Flags.disableInlining` |
| const List<String> compilerOptions = const []; |
| |
| const List<String> tests = [ |
| 'diamond', |
| 'diamond_and', |
| 'diamond_fuse', |
| 'diamond_or', |
| 'two_step', |
| 'two_branch', |
| ]; |
| |
| Map<String, List<String>> createPerTestOptions() { |
| Map<String, List<String>> perTestOptions = {}; |
| for (var test in tests) { |
| Uri constraints = Platform.script.resolve('data/$test/constraints.json'); |
| perTestOptions['$test'] = ['--read-program-split=$constraints']; |
| } |
| return perTestOptions; |
| } |
| |
| /// Returns a list of the deferred imports in a component where each import |
| /// becomes a string of 'uri#prefix'. |
| List<String> getDeferredImports(ir.Component component) { |
| List<String> imports = []; |
| for (var library in component.libraries) { |
| for (var import in library.dependencies) { |
| if (import.isDeferred) { |
| imports.add('${library.importUri}#${import.name}'); |
| } |
| } |
| } |
| imports.sort(); |
| return imports; |
| } |
| |
| /// A helper function which performs the following steps: |
| /// 1) Get deferred imports from a given [component] |
| /// 2) Spawns the supplied [constraintsUri] in its own isolate |
| /// 3) Passes deferred imports via a port to the spawned isolate |
| /// 4) Listens for a json string from the spawned isolated and returns the |
| /// results as a a [Future<String>]. |
| Future<String> constraintsToJson( |
| ir.Component component, Uri constraintsUri) async { |
| var imports = getDeferredImports(component); |
| SendPort sendPort; |
| var receivePort = ReceivePort(); |
| var isolate = await Isolate.spawnUri(constraintsUri, [], receivePort.sendPort, |
| paused: true); |
| isolate.addOnExitListener(receivePort.sendPort); |
| isolate.resume(isolate.pauseCapability); |
| String json; |
| await for (var msg in receivePort) { |
| if (msg == null) { |
| receivePort.close(); |
| } else if (sendPort == null) { |
| sendPort = msg; |
| sendPort.send(imports); |
| } else if (json == null) { |
| json = msg; |
| } else { |
| throw 'Unexpected message $msg'; |
| } |
| } |
| return json; |
| } |
| |
| /// Verifies the programmatic API produces the expected JSON. |
| Future<void> verifyCompiler(String test, Compiler compiler) async { |
| var constraints = Platform.script.resolve('data/$test/constraints.dart'); |
| var constraintsJsonUri = |
| Platform.script.resolve('data/$test/constraints.json'); |
| var component = compiler.componentForTesting; |
| var json = await constraintsToJson(component, constraints); |
| var constraintsJson = |
| File(constraintsJsonUri.toFilePath()).readAsStringSync(); |
| constraintsJson = constraintsJson.substring(0, constraintsJson.length - 1); |
| Expect.equals(json, constraintsJson); |
| } |
| |
| /// Compute the [OutputUnit]s for all source files involved in the test, and |
| /// ensure that the compiler is correctly calculating what is used and what is |
| /// not. We expect all test entry points to be in the `data` directory and any |
| /// or all supporting libraries to be in the `libs` folder, starting with the |
| /// same name as the original file in `data`. |
| main(List<String> args) { |
| asyncTest(() async { |
| Directory dataDir = Directory.fromUri(Platform.script.resolve('data')); |
| await checkTests(dataDir, const OutputUnitDataComputer(), |
| options: compilerOptions, |
| perTestOptions: createPerTestOptions(), |
| args: args, setUpFunction: () { |
| importPrefixes.clear(); |
| }, testedConfigs: allSpecConfigs, verifyCompiler: verifyCompiler); |
| }); |
| } |