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![Nicholas Shahan](/assets/img/avatar_default.png)
These are tests for the specific apis of the old runtime type system and they will never pass in the new type system. Change-Id: I740fc06411cdc621b072782d22ec630c5b6bf96a Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/341784 Commit-Queue: Nicholas Shahan <nshahan@google.com> Reviewed-by: Sigmund Cherem <sigmund@google.com>
287 lines
10 KiB
Dart
287 lines
10 KiB
Dart
// Copyright (c) 2020, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// Requirements=nnbd-weak
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import 'dart:_foreign_helper' show LEGACY_TYPE_REF, TYPE_REF;
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import 'dart:async';
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import 'runtime_utils.dart'
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show
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checkSubtype,
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checkProperSubtype,
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checkMutualSubtype,
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checkSubtypeFailure;
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class A {}
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class B extends A {}
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class C extends B {}
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class D<T extends B> {}
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class E<T, S> {}
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class F extends E<B, B> {}
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void main() {
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// Top type symmetry.
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// Object? <:> dynamic
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checkMutualSubtype(TYPE_REF<Object?>(), TYPE_REF<dynamic>());
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// Object? <:> void
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checkMutualSubtype(TYPE_REF<Object?>(), TYPE_REF<void>());
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// void <:> dynamic
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checkMutualSubtype(TYPE_REF<void>(), TYPE_REF<dynamic>());
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// Bottom is subtype of top.
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// Never <: dynamic
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checkProperSubtype(TYPE_REF<Never>(), TYPE_REF<dynamic>());
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// Never <: void
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checkProperSubtype(TYPE_REF<Never>(), TYPE_REF<void>());
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// Never <: Object?
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checkProperSubtype(TYPE_REF<Never>(), TYPE_REF<Object?>());
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// Object is between top and bottom.
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// Object <: Object?
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checkSubtype(TYPE_REF<Object>(), TYPE_REF<Object?>());
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// Never <: Object
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checkProperSubtype(TYPE_REF<Never>(), TYPE_REF<Object>());
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// Null is between top and bottom.
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// Null <: Object?
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checkProperSubtype(TYPE_REF<Null>(), TYPE_REF<Object?>());
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// Never <: Null
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checkSubtype(TYPE_REF<Never>(), TYPE_REF<Null>());
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// Class is between Object and bottom.
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// A <: Object
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checkProperSubtype(TYPE_REF<A>(), TYPE_REF<dynamic>());
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// Never <: A
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checkProperSubtype(TYPE_REF<Never>(), TYPE_REF<A>());
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// Nullable types are a union of T and Null.
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// A <: A?
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checkSubtype(TYPE_REF<A>(), TYPE_REF<A?>());
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// Null <: A?
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checkProperSubtype(TYPE_REF<Null>(), TYPE_REF<A?>());
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// A? <: Object?
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checkProperSubtype(TYPE_REF<A?>(), TYPE_REF<Object?>());
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// Legacy types will eventually be migrated to T or T? but until then are
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// symmetric with both.
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// Object* <:> Object
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checkMutualSubtype(LEGACY_TYPE_REF<Object>(), TYPE_REF<Object>());
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// Object* <:> Object?
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checkMutualSubtype(LEGACY_TYPE_REF<Object>(), TYPE_REF<Object?>());
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// Bottom Types
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// Null <: Object*
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checkSubtype(TYPE_REF<Null>(), LEGACY_TYPE_REF<Object>());
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// Never <: Object*
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checkSubtype(TYPE_REF<Never>(), LEGACY_TYPE_REF<Object>());
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// A* <:> A
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checkMutualSubtype(LEGACY_TYPE_REF<A>(), TYPE_REF<A>());
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// A* <:> A?
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checkMutualSubtype(LEGACY_TYPE_REF<A>(), TYPE_REF<A?>());
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// A* <: Object
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checkProperSubtype(LEGACY_TYPE_REF<A>(), TYPE_REF<Object>());
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// A* <: Object?
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checkProperSubtype(LEGACY_TYPE_REF<A>(), TYPE_REF<Object?>());
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// Null <: A*
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checkProperSubtype(TYPE_REF<Null>(), LEGACY_TYPE_REF<A>());
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// Never <: A*
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checkProperSubtype(TYPE_REF<Never>(), LEGACY_TYPE_REF<A>());
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// Futures.
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// Null <: FutureOr<Object?>
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checkProperSubtype(TYPE_REF<Null>(), TYPE_REF<FutureOr<Object?>>());
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// Object <: FutureOr<Object?>
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checkSubtype(TYPE_REF<Object>(), TYPE_REF<FutureOr<Object?>>());
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// Object? <:> FutureOr<Object?>
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checkMutualSubtype(TYPE_REF<Object?>(), TYPE_REF<FutureOr<Object?>>());
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// Object <:> FutureOr<Object>
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checkMutualSubtype(TYPE_REF<Object>(), TYPE_REF<FutureOr<Object>>());
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// Object <:> FutureOr<dynamic>
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checkMutualSubtype(TYPE_REF<Object>(), TYPE_REF<FutureOr<dynamic>>());
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// Object <:> FutureOr<void>
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checkMutualSubtype(TYPE_REF<Object>(), TYPE_REF<FutureOr<void>>());
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// Future<Object> <: FutureOr<Object?>
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checkProperSubtype(TYPE_REF<Future<Object>>(), TYPE_REF<FutureOr<Object?>>());
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// Future<Object?> <: FutureOr<Object?>
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checkProperSubtype(
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TYPE_REF<Future<Object?>>(), TYPE_REF<FutureOr<Object?>>());
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// FutureOr<Never> <: Future<Never>
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checkSubtype(TYPE_REF<FutureOr<Never>>(), TYPE_REF<Future<Never>>());
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// Future<B> <: FutureOr<A>
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checkProperSubtype(TYPE_REF<Future<B>>(), TYPE_REF<FutureOr<A>>());
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// B <: <: FutureOr<A>
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checkProperSubtype(TYPE_REF<B>(), TYPE_REF<FutureOr<A>>());
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// Future<B> <: Future<A>
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checkProperSubtype(TYPE_REF<Future<B>>(), TYPE_REF<Future<A>>());
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// Interface subtypes.
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// A <: A
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checkSubtype(TYPE_REF<A>(), TYPE_REF<A>());
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// B <: A
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checkProperSubtype(TYPE_REF<B>(), TYPE_REF<A>());
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// C <: B
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checkProperSubtype(TYPE_REF<C>(), TYPE_REF<B>());
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// C <: A
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checkProperSubtype(TYPE_REF<C>(), TYPE_REF<A>());
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// Functions.
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// A -> B <: Function
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checkProperSubtype(TYPE_REF<B Function(A)>(), TYPE_REF<Function>());
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// A -> B <: A -> B
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checkSubtype(TYPE_REF<B Function(A)>(), TYPE_REF<B Function(A)>());
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// A -> B <: B -> B
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checkProperSubtype(TYPE_REF<B Function(A)>(), TYPE_REF<B Function(B)>());
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// A -> B <: A -> A
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checkProperSubtype(TYPE_REF<B Function(A)>(), TYPE_REF<A Function(A)>());
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// Generic Function Subtypes.
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// Bound is a built in type.
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// <T extends int> void -> void <: <T extends int> void -> void
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checkSubtype(TYPE_REF<void Function<T extends int>()>(),
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TYPE_REF<void Function<T extends int>()>());
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// <T extends String> A -> T <: <T extends String> B -> T
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checkProperSubtype(TYPE_REF<T Function<T extends String>(A)>(),
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TYPE_REF<T Function<T extends String>(B)>());
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// <T extends double> T -> B <: <T extends double> T -> A
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checkProperSubtype(TYPE_REF<B Function<T extends double>(T)>(),
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TYPE_REF<A Function<T extends double>(T)>());
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// Bound is a function type.
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// <T extends A -> B> void -> void <: <T extends A -> B> void -> void
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checkSubtype(TYPE_REF<void Function<T extends B Function(A)>()>(),
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TYPE_REF<void Function<T extends B Function(A)>()>());
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// <T extends A -> B> A -> T <: <T extends A -> B> B -> T
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checkProperSubtype(TYPE_REF<T Function<T extends B Function(A)>(A)>(),
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TYPE_REF<T Function<T extends B Function(A)>(B)>());
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// <T extends A -> B> T -> B <: <T extends A -> B> T -> A
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checkProperSubtype(TYPE_REF<B Function<T extends B Function(A)>(T)>(),
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TYPE_REF<A Function<T extends B Function(A)>(T)>());
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// Bound is a user defined class.
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// <T extends B> void -> void <: <T extends B> void -> void
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checkSubtype(TYPE_REF<void Function<T extends B>()>(),
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TYPE_REF<void Function<T extends B>()>());
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// <T extends B> A -> T <: <T extends B> B -> T
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checkProperSubtype(TYPE_REF<T Function<T extends B>(A)>(),
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TYPE_REF<T Function<T extends B>(B)>());
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// <T extends B> T -> B <: <T extends B> T -> A
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checkProperSubtype(TYPE_REF<B Function<T extends B>(T)>(),
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TYPE_REF<A Function<T extends B>(T)>());
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// Bound is a Future.
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// <T extends Future<B>> void -> void <: <T extends Future<B>> void -> void
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checkSubtype(TYPE_REF<void Function<T extends Future<B>>()>(),
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TYPE_REF<void Function<T extends Future<B>>()>());
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// <T extends Future<B>> A -> T <: <T extends Future<B>> B -> T
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checkProperSubtype(TYPE_REF<T Function<T extends Future<B>>(A)>(),
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TYPE_REF<T Function<T extends Future<B>>(B)>());
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// <T extends Future<B>> T -> B <: <T extends Future<B>> T -> A
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checkProperSubtype(TYPE_REF<B Function<T extends Future<B>>(T)>(),
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TYPE_REF<A Function<T extends Future<B>>(T)>());
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// Bound is a FutureOr.
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// <T extends FutureOr<B>> void -> void <:
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// <T extends FutureOr<B>> void -> void
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checkSubtype(TYPE_REF<void Function<T extends FutureOr<B>>()>(),
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TYPE_REF<void Function<T extends FutureOr<B>>()>());
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// <T extends FutureOr<B>> A -> T <: <T extends FutureOr<B>> B -> T
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checkProperSubtype(TYPE_REF<T Function<T extends Future<B>>(A)>(),
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TYPE_REF<T Function<T extends Future<B>>(B)>());
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// <T extends FutureOr<B>> T -> B <: <T extends FutureOr<B>> T -> A
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checkProperSubtype(TYPE_REF<B Function<T extends Future<B>>(T)>(),
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TYPE_REF<A Function<T extends Future<B>>(T)>());
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// Generics.
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// D <:> D<B>
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checkMutualSubtype(TYPE_REF<D>(), TYPE_REF<D<B>>());
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// D<C> <: D<B>
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checkProperSubtype(TYPE_REF<D<C>>(), TYPE_REF<D<B>>());
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// F <: E
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checkProperSubtype(TYPE_REF<F>(), TYPE_REF<E>());
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// F <: E<A, A>
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checkProperSubtype(TYPE_REF<F>(), TYPE_REF<E<A, A>>());
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// E<B, B> <: E
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checkProperSubtype(TYPE_REF<E<B, B>>(), TYPE_REF<E>());
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// E<B, B> <: E<A, A>
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checkProperSubtype(TYPE_REF<E<B, B>>(), TYPE_REF<E<A, A>>());
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// Nullable interface subtypes.
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// B <: A?
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checkProperSubtype(TYPE_REF<B>(), TYPE_REF<A?>());
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// C <: A?
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checkProperSubtype(TYPE_REF<C>(), TYPE_REF<A?>());
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// B? <: A?
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checkProperSubtype(TYPE_REF<B?>(), TYPE_REF<A?>());
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// C? <: A?
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checkProperSubtype(TYPE_REF<C?>(), TYPE_REF<A?>());
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// Mixed mode.
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// B* <: A
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checkProperSubtype(LEGACY_TYPE_REF<B>(), TYPE_REF<A>());
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// B* <: A?
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checkProperSubtype(LEGACY_TYPE_REF<B>(), TYPE_REF<A?>());
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// A* <\: B
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checkSubtypeFailure(LEGACY_TYPE_REF<A>(), TYPE_REF<B>());
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// B? <: A*
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checkProperSubtype(TYPE_REF<B?>(), LEGACY_TYPE_REF<A>());
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// B <: A*
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checkProperSubtype(TYPE_REF<B>(), LEGACY_TYPE_REF<A>());
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// A <: B*
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checkSubtypeFailure(TYPE_REF<A>(), LEGACY_TYPE_REF<B>());
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// A? <: B*
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checkSubtypeFailure(TYPE_REF<A?>(), LEGACY_TYPE_REF<B>());
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// Allowed in weak mode.
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// dynamic <: Object
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checkSubtype(TYPE_REF<dynamic>(), TYPE_REF<Object>());
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// void <: Object
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checkSubtype(TYPE_REF<void>(), TYPE_REF<Object>());
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// Object? <: Object
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checkSubtype(TYPE_REF<Object?>(), TYPE_REF<Object>());
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// A? <: Object
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checkProperSubtype(TYPE_REF<A?>(), TYPE_REF<Object>());
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// A? <: A
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checkSubtype(TYPE_REF<A?>(), TYPE_REF<A>());
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// Null <: Never
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checkSubtype(TYPE_REF<Null>(), TYPE_REF<Never>());
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// Null <: Object
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checkProperSubtype(TYPE_REF<Null>(), TYPE_REF<Object>());
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// Null <: A
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checkProperSubtype(TYPE_REF<Null>(), TYPE_REF<A>());
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// Null <: FutureOr<A>
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checkProperSubtype(TYPE_REF<Null>(), TYPE_REF<FutureOr<A>>());
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// Null <: Future<A>
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checkProperSubtype(TYPE_REF<Null>(), TYPE_REF<Future<A>>());
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// FutureOr<Null> <: Future<Null>
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checkSubtype(TYPE_REF<FutureOr<Null>>(), TYPE_REF<Future<Null>>());
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// Null <: Future<A?>
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checkProperSubtype(TYPE_REF<Null>(), TYPE_REF<Future<A?>>());
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// FutureOr<Object?> <: Object
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checkSubtype(TYPE_REF<FutureOr<Object?>>(), TYPE_REF<Object>());
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// FutureOr<dynamic> <: Object
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checkSubtype(TYPE_REF<FutureOr<dynamic>>(), TYPE_REF<Object>());
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// FutureOr<void> <: Object
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checkSubtype(TYPE_REF<FutureOr<void>>(), TYPE_REF<Object>());
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}
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