// Copyright (c) 2018, 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 We say that a type T0 is a subtype of a type T1 (written T0 <: T1)
/// when:
/// Left Null: if T0 is Null then:
/// - if T1 is a type variable (promoted or not) the query is false
/// - If T1 is FutureOr<S> for some S, then the query is true iff Null <: S.
/// - If T1 is Null, S? or S* for some S, then the query is true.
/// - Otherwise, the query is false
/// @description Check that if type T0 is Null and If T1 is S? then T0 is
/// subtype of T1
/// @author sgrekhov@unipro.ru
///
/// @description Check that if type T0 is a subtype of a type T1, then instance
/// of T0 can be used as an argument of type T1. Test mixin members
/// @author sgrekhov@unipro.ru
///
/// This test is generated from left_null_A05.dart and 
/// arguments_binding_x03.dart.
/// Don't modify it. If you want to change this test, change one of the files 
/// above and then run generator.dart to regenerate the tests.


class S {
  const S();
}

Null t0Instance = null;
S? t1Instance = new S();

const t1Default = const S();


class ArgumentsBindingMixin1_t03 {
  S? m = t1Default;

  void superTest(S? val) {}
  void superTestPositioned(S? val, [S? val2 = t1Default]) {}
  void superTestNamed(S? val, {S? val2 = t1Default}) {}
  S? get superGetter => m;
  void set superSetter(S? val) {}
}

class ArgumentsBinding1_t03 extends Object with ArgumentsBindingMixin1_t03 {

  test(dynamic t1, dynamic t2) {
    superTest(t1);
    superTestPositioned(t1);
    superTestPositioned(t2, t1);
    superTestNamed(t1);
    superTestNamed(t2, val2: t1);
    superSetter = t1;
    m = t1;
    superGetter;
  }
}

class ArgumentsBindingMixin2_t03<X> {
  void superTest(X val) {}
  void superTestNamed(X val, {required X val2}) {}
  void set superSetter(X val) {}
}

class ArgumentsBinding2_t03<X> extends Object with ArgumentsBindingMixin2_t03<X> {

  test(dynamic t1, dynamic t2) {
    superTest(t1);
    superTestNamed(t2, val2: t1);
    superSetter = t1;
  }
}

main() {
  ArgumentsBinding1_t03 c1 = new ArgumentsBinding1_t03();

  c1.test(t0Instance, t1Instance);
  c1.superTest(t0Instance);
  c1.superTestPositioned(t0Instance);
  c1.superTestPositioned(t1Instance, t0Instance);
  c1.superTestNamed(t0Instance);
  c1.superTestNamed(t1Instance, val2: t0Instance);
  c1.superSetter = t0Instance;
  c1.superGetter;

  // Test type parameters

  //# <-- NotGenericFunctionType
  ArgumentsBinding2_t03<S?> c2 = new ArgumentsBinding2_t03<S?>();
  c2.test(t0Instance, t1Instance);
  c2.superTest(t0Instance);
  c2.superTestNamed(t1Instance, val2: t0Instance);
  c2.superSetter = t0Instance;
  //# -->
}