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650a1159ff
Bug: Change-Id: Ibf50302eb7a1cec7546f4ceb87f8c19808479568 Reviewed-on: https://dart-review.googlesource.com/8380 Reviewed-by: Janice Collins <jcollins@google.com> Reviewed-by: Ben Konyi <bkonyi@google.com>
84 lines
1.8 KiB
Dart
84 lines
1.8 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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// Test that type variables are passed on from subtypes that fixed the type
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// variable in inheritance.
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import 'package:expect/expect.dart';
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class A<T> {
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B<T> createB() => new B<T>();
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}
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class NumA extends A<num> {}
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class B<T> {
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T value;
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void test(var type, bool expect) {
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Expect.equals(expect, T == type);
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}
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}
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class StringB extends B<String> {}
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class C<T> extends A<T> {}
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class IntC extends C<int> {}
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void main() {
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testA(); //# 01: ok
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testNumA(); //# 02: ok
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testB(); //# 03: ok
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testStringB(); //# 04: ok
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testC(); //# 05: ok
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testIntC(); //# 06: ok
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}
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void testA() {
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var instanceA = new A<String>();
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var instanceB = instanceA.createB();
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instanceB.test(num, false);
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instanceB.test(int, false);
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instanceB.test(String, true);
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}
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void testNumA() {
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var instanceA = new NumA();
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var instanceB = instanceA.createB();
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instanceB.test(num, true);
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instanceB.test(int, false);
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instanceB.test(String, false);
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}
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void testB() {
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var instanceB = new B<int>();
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instanceB.test(num, false);
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instanceB.test(int, true);
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instanceB.test(String, false);
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}
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void testStringB() {
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var instanceB = new StringB();
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instanceB.test(num, false);
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instanceB.test(int, false);
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instanceB.test(String, true);
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}
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void testC() {
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var instanceA = new C<String>();
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var instanceB = instanceA.createB();
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instanceB.test(num, false);
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instanceB.test(int, false);
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instanceB.test(String, true);
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}
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void testIntC() {
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var instanceA = new IntC();
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var instanceB = instanceA.createB();
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instanceB.test(num, false);
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instanceB.test(int, true);
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instanceB.test(String, false);
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}
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