Joshua Litt
20faaa5d94
Change-Id: Ib18f554c1076f27a3f7c0df5a36410da41a1f467 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/148784 Reviewed-by: Paul Berry <paulberry@google.com> Reviewed-by: Sigmund Cherem <sigmund@google.com>
65 lines
2.1 KiB
Dart
65 lines
2.1 KiB
Dart
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// @dart = 2.7
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// Test of the graph segmentation algorithm used by deferred loading
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// to determine which elements can be deferred and which libraries
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// much be included in the initial download (loaded eagerly).
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import 'package:async_helper/async_helper.dart';
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import 'package:compiler/src/compiler.dart';
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import 'package:expect/expect.dart';
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import '../helpers/memory_compiler.dart';
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void main() {
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asyncTest(() async {
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print('--test from kernel------------------------------------------------');
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await runTest();
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});
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}
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runTest() async {
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CompilationResult result =
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await runCompiler(memorySourceFiles: MEMORY_SOURCE_FILES);
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Compiler compiler = result.compiler;
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var closedWorld = compiler.backendClosedWorldForTesting;
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var outputUnitForMember = closedWorld.outputUnitData.outputUnitForMember;
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var outputUnitForClass = closedWorld.outputUnitData.outputUnitForClass;
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var mainOutputUnit = closedWorld.outputUnitData.mainOutputUnit;
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var elementEnvironment = closedWorld.elementEnvironment;
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dynamic lib = elementEnvironment.lookupLibrary(Uri.parse("memory:lib.dart"));
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var customType = elementEnvironment.lookupClass(lib, "CustomType");
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var foo = elementEnvironment.lookupLibraryMember(lib, "foo");
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Expect.notEquals(mainOutputUnit, outputUnitForMember(foo));
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// Native elements are not deferred
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Expect.equals(mainOutputUnit, outputUnitForClass(customType));
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}
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// The main library imports a file defining a custom element.
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// Registering this class implicitly causes the constructors to be
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// live. Check that this is handled.
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const Map<String, String> MEMORY_SOURCE_FILES = const {
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"main.dart": """
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import "lib.dart" deferred as a;
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import 'dart:html';
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main() {
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document.registerElement("foo-tag", a.a);
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a.foo();
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}
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""",
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"lib.dart": """
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import 'dart:html';
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var a = CustomType;
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class CustomType extends HtmlElement {
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factory CustomType() => null;
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CustomType.created() : super.created() ;
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}
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foo() {}
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""",
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};
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