blob: eb34ef20f3063ed98609b68fb1dfb1bb319073c8 [file] [log] [blame]
// Copyright (c) 2020, 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.
// A null safe library cannot implement `toString()` and return `null`, but a
// legacy library, which may be called from null safe code, can. Test that that
// doesn't fail.
// Requirements=nnbd-weak
import "package:expect/expect.dart";
import "interpolation_and_buffer_legacy_lib.dart";
void main() {
var n = ToStringNull();
// Throws immediately when evaluating the first interpolated expression.
Expect.throws<Error>(() => "$n${throw "unreachable"}");
// Throws immediately when adding object that doesn't return a String.
() => StringBuffer()..write(n)..write(throw "unreachable"));
// Same behavior for constructor argument as if adding it to buffer later.
Expect.throws<Error>(() => StringBuffer(n)..write(throw "unreachable"));