tests/language_2/function_subtype/optional2_test.dart

// 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.
// Dart test program for constructors and initializers.

// Check function subtyping.

import 'package:expect/expect.dart';

class C<T> {}

typedef void void_();
typedef void void__int(int i);
typedef void void___int([int i]);
typedef void void___int2([int i]);
typedef void void___Object([Object o]);
typedef void void__int__int(int i1, [int i2]);
typedef void void__int__int2(int i1, [int i2]);
typedef void void__int__int_int(int i1, [int i2, int i3]);
typedef void void___double(double d);
typedef void void___int_int([int i1, int i2]);
typedef void void___int_int_int([int i1, int i2, int i3]);
typedef void void___Object_int([Object o, int i]);

main() {
  // Test ([int])->void <: ()->void.
  Expect.isTrue(new C<void___int>() is C<void_>);
  // Test ([int])->void <: (int)->void.
  Expect.isTrue(new C<void___int>() is C<void__int>);
  // Test (int)->void <: ([int])->void.
  Expect.isFalse(new C<void__int>() is C<void___int>);
  // Test ([int])->void <: ([int])->void.
  Expect.isTrue(new C<void___int>() is C<void___int2>);
  // Test ([Object])->void <: ([int])->void.
  Expect.isTrue(new C<void___Object>() is C<void___int>);
  // Test ([int])->void <: ([Object])->void.
  Expect.isFalse(new C<void___int>() is C<void___Object>);
  // Test (int,[int])->void <: (int)->void.
  Expect.isTrue(new C<void__int__int>() is C<void__int>);
  // Test (int,[int])->void <: (int,[int])->void.
  Expect.isTrue(new C<void__int__int>() is C<void__int__int2>);
  // Test (int)->void <: ([int])->void.
  Expect.isFalse(new C<void__int>() is C<void___int>);
  // Test ([int,int])->void <: (int)->void.
  Expect.isTrue(new C<void___int_int>() is C<void__int>);
  // Test ([int,int])->void <: (int,[int])->void.
  Expect.isTrue(new C<void___int_int>() is C<void__int__int>);
  // Test ([int,int])->void <: (int,[int,int])->void.
  Expect.isFalse(new C<void___int_int>() is C<void__int__int_int>);
  // Test ([int,int,int])->void <: (int,[int,int])->void.
  Expect.isTrue(new C<void___int_int_int>() is C<void__int__int_int>);
  // Test ([int])->void <: ([double])->void.
  Expect.isFalse(new C<void___int>() is C<void___double>);
  // Test ([int])->void <: ([int,int])->void.
  Expect.isFalse(new C<void___int>() is C<void___int_int>);
  // Test ([int,int])->void <: ([int])->void.
  Expect.isTrue(new C<void___int_int>() is C<void___int>);
  // Test ([Object,int])->void <: ([int])->void.
  Expect.isTrue(new C<void___Object_int>() is C<void___int>);
}