| // Copyright (c) 2013, 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. |
| |
| // Test of the graph segmentation algorithm used by deferred loading |
| // to determine which elements can be deferred and which libraries |
| // much be included in the initial download (loaded eagerly). |
| |
| import 'package:async_helper/async_helper.dart'; |
| import 'package:compiler/src/compiler.dart'; |
| import 'package:compiler/src/commandline_options.dart'; |
| import 'package:expect/expect.dart'; |
| import '../memory_compiler.dart'; |
| |
| void main() { |
| asyncTest(() async { |
| print('--test from ast---------------------------------------------------'); |
| await runTest(useKernel: false); |
| print('--test from kernel------------------------------------------------'); |
| await runTest(useKernel: true); |
| }); |
| } |
| |
| runTest({bool useKernel}) async { |
| CompilationResult result = await runCompiler( |
| memorySourceFiles: MEMORY_SOURCE_FILES, |
| options: useKernel ? [] : [Flags.useOldFrontend]); |
| Compiler compiler = result.compiler; |
| var closedWorld = compiler.backendClosedWorldForTesting; |
| var outputUnitForEntity = compiler.backend.outputUnitData.outputUnitForEntity; |
| var mainOutputUnit = compiler.backend.outputUnitData.mainOutputUnit; |
| var elementEnvironment = closedWorld.elementEnvironment; |
| dynamic lib = elementEnvironment.lookupLibrary(Uri.parse("memory:lib.dart")); |
| var customType = elementEnvironment.lookupClass(lib, "CustomType"); |
| var foo = elementEnvironment.lookupLibraryMember(lib, "foo"); |
| Expect.notEquals(mainOutputUnit, outputUnitForEntity(foo)); |
| // Native elements are not deferred |
| Expect.equals(mainOutputUnit, outputUnitForEntity(customType)); |
| } |
| |
| // The main library imports a file defining a custom element. |
| // Registering this class implicitly causes the constructors to be |
| // live. Check that this is handled. |
| const Map MEMORY_SOURCE_FILES = const { |
| "main.dart": """ |
| import "lib.dart" deferred as a; |
| import 'dart:html'; |
| |
| main() { |
| document.registerElement("foo-tag", a.a); |
| a.foo(); |
| } |
| """, |
| "lib.dart": """ |
| import 'dart:html'; |
| var a = CustomType; |
| |
| class CustomType extends HtmlElement { |
| factory CustomType() => null; |
| CustomType.created() : super.created() ; |
| } |
| |
| foo() {} |
| """, |
| }; |