Konstantin Shcheglov
3c596e802b
R=brianwilkerson@google.com, paulberry@google.com Change-Id: Ie1d148ff584c202edc334659eeb4f792bb8773d4 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/106620 Commit-Queue: Konstantin Shcheglov <scheglov@google.com> Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Reviewed-by: Paul Berry <paulberry@google.com>
76 lines
1.5 KiB
Dart
76 lines
1.5 KiB
Dart
// Copyright (c) 2019, 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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// SharedOptions=--enable-experiment=non-nullable
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// Test that the trailing "!" is accepted after a sampling of expression
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// syntaxes. Verify that the compiler understands the resulting type to be
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// non-nullable by constructing a list containing the expression, and assigning
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// it to List<Object>. Where possible, verify that the runtime implements the
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// proper null-check semantics by verifying that the presence of `null` causes
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// an exception to be thrown.
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import 'package:expect/expect.dart';
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class C {
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const C();
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Object? get x => null;
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void f() {}
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}
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Object? f() => null;
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main() {
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List<Object> listOfObject = [];
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var x1 = [0!];
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listOfObject = x1;
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var x2 = [true!];
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listOfObject = x2;
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var x3 = ["foo"!];
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listOfObject = x3;
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var x4 = [#foo!];
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listOfObject = x4;
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var x5 = [[1]!];
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listOfObject = x5;
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var x6 = [{1:2}!];
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listOfObject = x6;
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var x7 = [{1}!];
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listOfObject = x7;
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var x8 = [new C()!];
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listOfObject = x8;
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var x9 = [const C()!];
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listOfObject = x9;
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Expect.throws(() {
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var x10 = [f()!];
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listOfObject = x10;
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});
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C c = new C();
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Expect.throws(() {
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var x11 = [c.x!];
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listOfObject = x11;
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});
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var g = f;
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Expect.throws(() {
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var x12 = [g()!];
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listOfObject = x12;
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});
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int i = 0;
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var x13 = [i++!];
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listOfObject = x13;
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}
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