| // Copyright (c) 2019, 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. |
| |
| /// @assertion A type alias declares a name for a type expression. |
| /// <typeAlias> ::=<metadata> typedef <typeIdentifier> <typeParameters>?‘=’<type> |
| /// ‘;’ |
| /// | <metadata> typedef <functionTypeAlias> |
| /// <functionTypeAlias> ::= <functionPrefix> <formalParameterPart> ‘;’ |
| /// <functionPrefix> ::= <type>? <identifier> |
| /// @description Checks that type alias syntax works as expected. Test |
| /// non-function type alias with type parameters |
| /// @author sgrekhov@unipro.ru |
| |
| import "../../../Utils/expect.dart"; |
| |
| const int meta = 1; |
| |
| class C<T1 extends num, T2> { |
| T1 t1; |
| T2 t2; |
| C(this.t1, this.t2); |
| } |
| |
| @meta typedef CAlias1 = C; |
| @meta typedef CAlias2<T extends num> = C<T, String>; |
| typedef CAlias3 = C<int, String>; |
| |
| main() { |
| CAlias1 ca1 = new CAlias1(3.14, "3.14"); |
| Expect.isTrue(ca1 is C<num, dynamic>); |
| Expect.isTrue(ca1.t1 is num); |
| Expect.isTrue(ca1.t2 is dynamic); |
| Expect.runtimeIsType<C<num, dynamic>>(ca1); |
| Expect.runtimeIsType<num>(ca1.t1); |
| Expect.runtimeIsType<dynamic>(ca1.t2); |
| ca1.t1 = 42; |
| Expect.equals(42, ca1.t1); |
| |
| CAlias2<int> ca2 = new CAlias2<int>(42, ""); |
| Expect.isTrue(ca2 is C<int, String>); |
| Expect.isTrue(ca2.t1 is int); |
| Expect.isTrue(ca2.t2 is String); |
| Expect.runtimeIsType<C<int, String>>(ca2); |
| Expect.runtimeIsType<int>(ca2.t1); |
| Expect.runtimeIsType<String>(ca2.t2); |
| ca2.t1 = -1; |
| Expect.equals(-1, ca2.t1); |
| ca2.t2 = "Lily was here"; |
| Expect.equals("Lily was here", ca2.t2); |
| |
| CAlias3 ca3 = new CAlias3(42, ""); |
| Expect.isTrue(ca3 is C<int, String>); |
| Expect.isTrue(ca3.t1 is int); |
| Expect.isTrue(ca3.t2 is String); |
| Expect.runtimeIsType<C<int, String>>(ca3); |
| Expect.runtimeIsType<int>(ca3.t1); |
| Expect.runtimeIsType<String>(ca3.t2); |
| ca3.t1 = -1; |
| Expect.equals(-1, ca3.t1); |
| ca3.t2 = "Lily was here"; |
| Expect.equals("Lily was here", ca3.t2); |
| } |