Robert Nystrom
739852d99d
Change-Id: I3356296e72dfa07b0ac994da0ce96f766b182e80 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/137722 Commit-Queue: Bob Nystrom <rnystrom@google.com> Auto-Submit: Bob Nystrom <rnystrom@google.com> Reviewed-by: Leaf Petersen <leafp@google.com>
39 lines
1.1 KiB
Dart
39 lines
1.1 KiB
Dart
// Copyright (c) 2018, 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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// Dart test program to test arithmetic operations.
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import "package:expect/expect.dart";
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class C1 {
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int call(int i) => 2 * i;
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}
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class C2 implements Function {
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int call(int i) => 2 * i;
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}
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main() {
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C1 c1 = new C1();
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// Implicitly invokes c1.call(1)
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Expect.equals(c1(1), 2);
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dynamic d1 = c1;
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// Implicitly invokes d1.call(1)
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Expect.equals(d1(1), 2);
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C2 c2 = new C2();
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// Implicitly invokes c2.call(1)
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Expect.equals(c2(1), 2);
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dynamic d2 = c2;
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// Implicitly invokes d2.call(1)
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Expect.equals(d2(1), 2);
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// Cannot invoke with the wrong signature.
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c2();
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//^^
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// [analyzer] COMPILE_TIME_ERROR.NOT_ENOUGH_POSITIONAL_ARGUMENTS
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// [cfe] Too few positional arguments: 1 required, 0 given.
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c2(3, 4);
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//^^^^^^
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// [analyzer] COMPILE_TIME_ERROR.EXTRA_POSITIONAL_ARGUMENTS
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// [cfe] Too many positional arguments: 1 allowed, but 2 found.
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}
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