// 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 A type T0 is a subtype of a type T1 (written T0 <: T1) when:
/// Named Function Types: T0 is U0 Function<X0 extends B00, ..., Xk extends B0k>
///   (T0 x0, ..., Tn xn, {Tn+1 xn+1, ..., Tm xm})
///
/// and T1 is U1 Function<Y0 extends B10, ..., Yk extends B1k>(S0 y0, ..., Sn yn,
/// {Sn+1 yn+1, ..., Sq yq})
/// and {yn+1, ... , yq} subsetof {xn+1, ... , xm}
/// and Si[Z0/Y0, ..., Zk/Yk] <: Vi[Z0/X0, ..., Zk/Xk] for i in 0...n
/// and Si[Z0/Y0, ..., Zk/Yk] <: Tj[Z0/X0, ..., Zk/Xk] for i in n+1...q, yj = xi
/// and U0[Z0/X0, ..., Zk/Xk] <: U1[Z0/Y0, ..., Zk/Yk]
/// and B0i[Z0/X0, ..., Zk/Xk] === B1i[Z0/Y0, ..., Zk/Yk] for i in 0...k
/// where the Zi are fresh type variables with bounds B0i[Z0/X0, ..., Zk/Xk]
/// @description Check that if there is i in 0...n such that
/// Si[Z0/Y0, ..., Zk/Yk] is not subtype of Vi[Z0/X0, ..., Zk/Xk], then T0 is not
/// a subtype of T1
/// @author sgrekhov@unipro.ru
///
/// @description Check that if type T0 not a subtype of a type T1, then it cannot
/// be used as an argument of type T1
/// @author sgrekhov@unipro.ru
///
/// This test is generated from named_function_types_fail_A21.dart and 
/// arguments_binding_fail_x01.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.


import '../../utils/common.dart';
import '../../../../Utils/expect.dart';

class U0 extends U1 {}
class U1 {}
class V0 {}
class V1 {}
class V2 {}
class V3 {}
class V4 {}
class S0 extends V0 {}
class S1 {}
class S2 extends V2 {}
class S3 extends V3 {}

typedef T0 = U0 Function(V0 x0, V1 x1, {V2? x2, V3? x3, V4? x4});
typedef T1 = U1 Function(S0 y0, S1 y1, {S2? x2, S3? x3}); // S1 is not subtype of V1

U0 t0Func(V0 x0, V1 x1, {V2? x2, V3? x3, V4? x4}) => new U0();
U1 t1Func(S0 y0, S1 y1, {S2? x2, S3? x3}) => new U1();

T0 t0Instance = t0Func;
T1 t1Instance = t1Func;

const t1Default = t1Func;


namedArgumentsFunc1(T1 t1, {T1 t2 = t1Default}) {}
positionalArgumentsFunc1(T1 t1, [T1 t2 = t1Default]) {}

namedArgumentsFunc2<X>(X t1, {required X t2}) {}

class ArgumentsBindingClass {
  ArgumentsBindingClass(T1 t1) {}

  ArgumentsBindingClass.named(T1 t1, {T1 t2 = t1Default}) {}

  factory ArgumentsBindingClass.fNamed(T1 t1, {T1 t2 = t1Default}) {
    return new ArgumentsBindingClass.named(t1, t2: t2);
  }
  factory ArgumentsBindingClass.fPositional(T1 t1, [T1 t2 = t1Default]) {
    return new ArgumentsBindingClass.named(t1, t2: t2);
  }

  static namedArgumentsStaticMethod(T1 t1, {T1 t2 = t1Default}) {}
  static positionalArgumentsStaticMethod(T1 t1, [T1 t2 = t1Default]) {}

  namedArgumentsMethod(T1 t1, {T1 t2 = t1Default}) {}
  positionalArgumentsMethod(T1 t1, [T1 t2 = t1Default]) {}

  set testSetter(T1 val) {}
}

class ArgumentsBindingClassGen<X> {
  ArgumentsBindingClassGen(X t1) {}

  ArgumentsBindingClassGen.named(X t1, {required X t2}) {}

  factory ArgumentsBindingClassGen.fNamed(X t1, {required X t2}) {
    return new ArgumentsBindingClassGen.named(t1, t2: t2);
  }

  namedArgumentsMethod(X t1, {required X t2}) {}

  set testSetter(X val) {}
}

class ArgumentsBindingClassSuper {
  ArgumentsBindingClassSuper(T1 t1) {}
}

class ArgumentsBindingDesc extends ArgumentsBindingClassSuper {
  ArgumentsBindingDesc(T0 t0) : super (forgetType(t0)) {}
}

main() {
  // Test functions
  Expect.throws(() {
    namedArgumentsFunc1(forgetType(t0Instance));
  }, (e) => e is TypeError || e is CastError);

  Expect.throws(() {
    namedArgumentsFunc1(t1Instance, t2: forgetType(t0Instance));
  }, (e) => e is TypeError || e is CastError);

  Expect.throws(() {
    positionalArgumentsFunc1(forgetType(t0Instance));
  }, (e) => e is TypeError || e is CastError);

  Expect.throws(() {
    positionalArgumentsFunc1(t1Instance, forgetType(t0Instance));
  }, (e) => e is TypeError || e is CastError);

  // Test constructors
  Expect.throws(() {
    new ArgumentsBindingClass(forgetType(t0Instance));
  }, (e) => e is TypeError || e is CastError);

  Expect.throws(() {
    new ArgumentsBindingClass.named(forgetType(t0Instance));
  }, (e) => e is TypeError || e is CastError);

  Expect.throws(() {
    new ArgumentsBindingClass.named(t1Instance, t2: forgetType(t0Instance));
  }, (e) => e is TypeError || e is CastError);

  Expect.throws(() {
    new ArgumentsBindingClass.fNamed(forgetType(t0Instance));
  }, (e) => e is TypeError || e is CastError);

  Expect.throws(() {
    new ArgumentsBindingClass.fNamed(t1Instance, t2: forgetType(t0Instance));
  }, (e) => e is TypeError || e is CastError);

  Expect.throws(() {
    new ArgumentsBindingClass.fPositional(forgetType(t0Instance));
  }, (e) => e is TypeError || e is CastError);

  Expect.throws(() {
    new ArgumentsBindingClass.fPositional(t1Instance, forgetType(t0Instance));
  }, (e) => e is TypeError || e is CastError);

  // Test instance methods and setters
  Expect.throws(() {
    new ArgumentsBindingClass(t1Instance).namedArgumentsMethod(
        forgetType(t0Instance));
  }, (e) => e is TypeError || e is CastError);

  Expect.throws(() {
    new ArgumentsBindingClass(t1Instance).namedArgumentsMethod(t1Instance,
        t2: forgetType(t0Instance));
  }, (e) => e is TypeError || e is CastError);

  Expect.throws(() {
    new ArgumentsBindingClass(t1Instance).positionalArgumentsMethod(
        forgetType(t0Instance));
  }, (e) => e is TypeError || e is CastError);

  Expect.throws(() {
    new ArgumentsBindingClass(t1Instance).positionalArgumentsMethod(t1Instance,
        forgetType(t0Instance));
  }, (e) => e is TypeError || e is CastError);

  Expect.throws(() {
    new ArgumentsBindingClass(t1Instance).testSetter = forgetType(t0Instance);
  }, (e) => e is TypeError || e is CastError);

  // Test static methods
  Expect.throws(() {
    ArgumentsBindingClass.namedArgumentsStaticMethod(forgetType(t0Instance));
  }, (e) => e is TypeError || e is CastError);

  Expect.throws(() {
    ArgumentsBindingClass.namedArgumentsStaticMethod(t1Instance,
        t2: forgetType(t0Instance));
  }, (e) => e is TypeError || e is CastError);

  Expect.throws(() {
    ArgumentsBindingClass.positionalArgumentsStaticMethod(
        forgetType(t0Instance));
  }, (e) => e is TypeError || e is CastError);

  Expect.throws(() {
    ArgumentsBindingClass.positionalArgumentsStaticMethod(t1Instance,
        forgetType(t0Instance));
  }, (e) => e is TypeError || e is CastError);

  // Test type parameters


  // Test superclass constructor call
  Expect.throws(() {
    new ArgumentsBindingDesc(t0Instance);
  }, (e) => e is TypeError || e is CastError);
}