mirror of
https://github.com/dart-lang/sdk
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df97aca1fa
Closes https://github.com/dart-lang/sdk/pull/50764 GitOrigin-RevId: ee2fe9a75d50e877f4ad2fe3743acdbc04f186ef Change-Id: Ia73cd22da4e6ec95e84772aa4e1345ce2dbde215 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/276360 Reviewed-by: Erik Ernst <eernst@google.com> Commit-Queue: Erik Ernst <eernst@google.com>
248 lines
8.2 KiB
Dart
248 lines
8.2 KiB
Dart
// Copyright (c) 2011, 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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library MirrorsTest;
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import 'dart:mirrors';
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import 'package:expect/minitest.dart';
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bool isDart2js = false; // TODO(ahe): Remove this field.
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var topLevelField;
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u(a, b, c) => {"a": a, "b": b, "c": c};
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_v(a, b) => a + b;
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class Class<T> {
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Class() {
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this.field = "default value";
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}
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Class.withInitialValue(this.field);
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var field;
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Class.generative(this.field);
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Class.redirecting(y) : this.generative(y * 2);
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factory Class.faktory(y) => new Class.withInitialValue(y * 3);
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factory Class.redirectingFactory(y) = Class<T>.faktory;
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m(a, b, c) => {"a": a, "b": b, "c": c};
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_n(a, b) => a + b;
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noSuchMethod(invocation) => "DNU";
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static var staticField;
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static s(a, b, c) => {"a": a, "b": b, "c": c};
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static _t(a, b) => a + b;
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}
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typedef Typedef();
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testInvoke(mirrors) {
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var instance = new Class();
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var instMirror = reflect(instance);
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expect(instMirror.invoke(#m, ['A', 'B', instance]).reflectee,
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equals({"a": 'A', "b": 'B', "c": instance}));
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expect(instMirror.invoke(#notDefined, []).reflectee, equals("DNU"));
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expect(instMirror.invoke(#m, []).reflectee, equals("DNU")); // Wrong arity.
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var classMirror = instMirror.type;
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expect(classMirror.invoke(#s, ['A', 'B', instance]).reflectee,
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equals({"a": 'A', "b": 'B', "c": instance}));
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expect(() => classMirror.invoke(#notDefined, []).reflectee, throws);
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expect(() => classMirror.invoke(#s, []).reflectee, throws); // Wrong arity.
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var libMirror = classMirror.owner as LibraryMirror;
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expect(libMirror.invoke(#u, ['A', 'B', instance]).reflectee,
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equals({"a": 'A', "b": 'B', "c": instance}));
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expect(() => libMirror.invoke(#notDefined, []).reflectee, throws);
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expect(() => libMirror.invoke(#u, []).reflectee, throws); // Wrong arity.
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}
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/// In dart2js, lists, numbers, and other objects are treated special
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/// and their methods are invoked through a technique called interceptors.
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testIntercepted(mirrors) {
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{
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var instance = 1;
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var instMirror = reflect(instance);
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expect(instMirror.invoke(#toString, []).reflectee, equals('1'));
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}
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var instance = [];
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var instMirror = reflect(instance);
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instMirror.setField(#length, 44);
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var resultMirror = instMirror.getField(#length);
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expect(resultMirror.reflectee, equals(44));
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expect(instance.length, equals(44));
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expect(
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instMirror.invoke(#toString, []).reflectee,
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equals('[null, null, null, null, null, null, null, null, null, null,'
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' null, null, null, null, null, null, null, null, null, null,'
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' null, null, null, null, null, null, null, null, null, null,'
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' null, null, null, null, null, null, null, null, null, null,'
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' null, null, null, null]'));
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}
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testFieldAccess(mirrors) {
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var instance = new Class();
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var libMirror = mirrors.findLibrary(#MirrorsTest);
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var classMirror = libMirror.declarations[#Class];
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var instMirror = reflect(instance);
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var fieldMirror = classMirror.declarations[#field];
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var future;
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expect(fieldMirror is VariableMirror, isTrue);
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expect(fieldMirror.type, equals(mirrors.dynamicType));
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libMirror.setField(#topLevelField, [91]);
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expect(libMirror.getField(#topLevelField).reflectee, equals([91]));
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expect(topLevelField, equals([91]));
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}
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testClosureMirrors(mirrors) {
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// TODO(ahe): Test optional parameters (named or not).
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var closure = (x, y, z) {
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return x + y + z;
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};
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var mirror = reflect(closure) as ClosureMirror;
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var funcMirror = (mirror.function) as MethodMirror;
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expect(funcMirror.parameters.length, equals(3));
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expect(mirror.apply([7, 8, 9]).reflectee, equals(24));
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}
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testInvokeConstructor(mirrors) {
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var classMirror = reflectClass(Class);
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var instanceMirror = classMirror.newInstance(Symbol.empty, []);
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expect(instanceMirror.reflectee is Class, equals(true));
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expect(instanceMirror.reflectee.field, equals("default value"));
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instanceMirror = classMirror.newInstance(#withInitialValue, [45]);
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expect(instanceMirror.reflectee is Class, equals(true));
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expect(instanceMirror.reflectee.field, equals(45));
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instanceMirror = classMirror.newInstance(#generative, [7]);
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expect(instanceMirror.reflectee is Class, equals(true));
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expect(instanceMirror.reflectee.field, equals(7));
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instanceMirror = classMirror.newInstance(#redirecting, [8]);
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expect(instanceMirror.reflectee is Class, equals(true));
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expect(instanceMirror.reflectee.field, equals(16));
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instanceMirror = classMirror.newInstance(#faktory, [9]);
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expect(instanceMirror.reflectee is Class, equals(true));
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expect(instanceMirror.reflectee.field, equals(27));
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instanceMirror = classMirror.newInstance(#redirectingFactory, [10]);
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expect(instanceMirror.reflectee is Class, equals(true));
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expect(instanceMirror.reflectee.field, equals(30));
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}
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testReflectClass(mirrors) {
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var classMirror = reflectClass(Class);
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expect(classMirror is ClassMirror, equals(true));
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var symbolClassMirror = reflectClass(Symbol);
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var symbolMirror =
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symbolClassMirror.newInstance(Symbol.empty, ['withInitialValue']);
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var objectMirror = classMirror.newInstance(symbolMirror.reflectee, [1234]);
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expect(objectMirror.reflectee is Class, equals(true));
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expect(objectMirror.reflectee.field, equals(1234));
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}
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testNames(mirrors) {
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var libMirror = mirrors.findLibrary(#MirrorsTest);
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var classMirror = libMirror.declarations[#Class];
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var typedefMirror = libMirror.declarations[#Typedef];
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var methodMirror = libMirror.declarations[#testNames];
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var variableMirror = classMirror.declarations[#field];
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expect(libMirror.simpleName, equals(#MirrorsTest));
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expect(libMirror.qualifiedName, equals(#MirrorsTest));
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expect(classMirror.simpleName, equals(#Class));
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expect(classMirror.qualifiedName, equals(#MirrorsTest.Class));
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TypeVariableMirror typeVariable = classMirror.typeVariables.single;
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expect(typeVariable.simpleName, equals(#T));
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expect(
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typeVariable.qualifiedName, equals(const Symbol('MirrorsTest.Class.T')));
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if (!isDart2js) {
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// TODO(ahe): Implement this in dart2js.
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expect(typedefMirror.simpleName, equals(#Typedef));
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expect(typedefMirror.qualifiedName,
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equals(const Symbol('MirrorsTest.Typedef')));
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var typedefMirrorDeNovo = reflectType(Typedef);
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expect(typedefMirrorDeNovo.simpleName, equals(#Typedef));
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expect(typedefMirrorDeNovo.qualifiedName,
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equals(const Symbol('MirrorsTest.Typedef')));
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}
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expect(methodMirror.simpleName, equals(#testNames));
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expect(methodMirror.qualifiedName,
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equals(const Symbol('MirrorsTest.testNames')));
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expect(variableMirror.simpleName, equals(#field));
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expect(variableMirror.qualifiedName,
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equals(const Symbol('MirrorsTest.Class.field')));
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}
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testLibraryUri(var value, bool check(Uri uri)) {
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var valueMirror = reflect(value);
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ClassMirror valueClass = valueMirror.type;
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LibraryMirror valueLibrary = valueClass.owner as LibraryMirror;
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Uri uri = valueLibrary.uri;
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if (!uri.isScheme("https") ||
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uri.host != "dartlang.org" ||
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uri.path != "/dart2js-stripped-uri") {
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expect(check(uri), isTrue);
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}
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}
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main() {
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var mirrors = currentMirrorSystem();
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test("Test reflective method invocation", () {
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testInvoke(mirrors);
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});
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test('Test intercepted objects', () {
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testIntercepted(mirrors);
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});
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test("Test field access", () {
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testFieldAccess(mirrors);
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});
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test("Test closure mirrors", () {
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testClosureMirrors(mirrors);
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});
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test("Test invoke constructor", () {
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testInvokeConstructor(mirrors);
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});
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test("Test current library uri", () {
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testLibraryUri(
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new Class(),
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// TODO(floitsch): change this to "/mirrors_test.dart" when
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// dart2js_mirrors_test.dart has been removed.
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(Uri uri) => uri.path.endsWith('mirrors_test.dart'));
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});
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test("Test dart library uri", () {
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testLibraryUri("test", (Uri uri) {
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if (uri == Uri.parse('dart:core')) return true;
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// TODO(floitsch): do we want to fake the interceptors to
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// be in dart:core?
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return (uri == Uri.parse('dart:_interceptors'));
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});
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});
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test("Test simple and qualifiedName", () {
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testNames(mirrors);
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});
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test("Test reflect type", () {
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testReflectClass(mirrors);
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});
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}
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