blob: acaa1c529de5cd94cff5d103c628735550651c54 [file] [log] [blame]
// TODO(multitest): This was automatically migrated from a multitest and may
// contain strange or dead code.
// Copyright (c) 2013, 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.
// Test least upper bound through type checking of conditionals.
// [NNBD non-migrated]: This test relies on implicit downcasts, so isn't
// meaningful under NNBD.
class A {
var a;
}
class B {
var b;
}
class C extends B {
var c;
}
class D extends B {
var d;
}
class E<T> {
T e;
E(this.e);
}
class F<T> extends E<T> {
T f;
F(T f)
: this.f = f,
super(f);
}
void main() {
testAB(new A(), new B());
testBC(new C(), new C());
testCD(new C(), new D());
testEE(new F<C>(new C()), new F<C>(new C()));
testEF(new F<C>(new C()), new F<C>(new C()));
}
void testAB(A a, B b) {
var c = new C();
}
void testBC(B b, C c) {
var a = null;
}
void testCD(C c, D d) {
}
void testEE(E<B> e, E<C> f) {
// The least upper bound of E<B> and E<C> is E<B>.
F<C> r2 = false ? e : f;
}
void testEF(E<B> e, F<C> f) {
// The least upper bound of E<B> and F<C> is E<B>.
var r5;
}