dart-sdk/tests/language/string/const_interpolation_constant_string_interpolation_test.dart
Robert Nystrom 1b2454b85e Migrate language_2/string to null safety.
Change-Id: Ib09f268c8a8edffba007cdd4962550a5e78ff808
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/151090
Reviewed-by: Erik Ernst <eernst@google.com>
Commit-Queue: Bob Nystrom <rnystrom@google.com>
Auto-Submit: Bob Nystrom <rnystrom@google.com>
2020-06-17 21:14:43 +00:00

31 lines
775 B
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.
// VMOptions=--optimization-counter-threshold=10 --no-use-osr --no-background-compilation
import "package:expect/expect.dart";
main() {
final a = new A();
for (int i = 0; i < 20; i++) {
final r = interpolIt(a);
Expect.stringEquals("hello home", r);
}
final b = new B();
// Deoptimize "interpolIt".
final r = interpolIt(b);
Expect.stringEquals("hello world", r);
}
String interpolIt(v) {
// String interpolation will be constant folded.
return "hello ${v.foo()}";
}
class A {
foo() => "home";
}
class B {
foo() => "world";
}