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// Copyright (c) 2021, 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 When tearing off a constructor of a generic class using [],
/// the type arguments may be implicitly instantiated, just as for a normal
/// generic method tear-off of the corresponding static function. The
/// instantiation is based on the context-type at the tear-off position. If the
/// context types allows a generic function, the tear-off is not instantiated
/// and the result is a generic function.
/// @description Checks that type arguments can be instantiated during the
/// constructor tearing off.
/// @author
// SharedOptions=--enable-experiment=constructor-tearoffs
import "../../Utils/expect.dart";
class C<T1, T2 extends num, T3 extends String> {
var t1, t2, t3;
var p1, p2;
C.constr() {
t1 = T1;
t2 = T2;
t3 = T3;
C.constr1(T1 par1, T2 par2) {
t1 = T1;
t2 = T2;
t3 = T3;
p1 = par1;
p2 = par2;
void check(exp1, exp2, exp3, exp4, exp5) {
Expect.equals(exp1, T1);
Expect.equals(exp2, T2);
Expect.equals(exp3, T3);
Expect.equals(exp4, p1);
Expect.equals(exp5, p2);
main() {
var v1 = C<dynamic, num, String>.constr;
C c1 = v1();
c1.check(dynamic, num, String, null, null);
var v2 = C<dynamic, num, String>.constr1;
C c2 = v2([], 0);
c2.check(dynamic, num, String, [], 0);
var v3 = C<List, int, String>.constr;
C c3 = v3();
c3.check(List, int, String, null, null);
var v4 = C<List, int, String>.constr1;
C c4 = v4([], 0);
c1.check(List, int, String, [], 0);