LibTest/io/Stdout/addError_A01_t02.dart

// Copyright (c) 2017, 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.

// @dart = 2.9

/// @assertion void add(List<int> data)
/// void addError(error, [StackTrace stackTrace])
/// Passes the [error] to the target consumer as an error event.
/// @description Checks that error message and stack trace appears in [stderr] as
/// a result of the [addError] method call.
/// @author iarkh@unipro.ru

import "../../../Utils/expect.dart";
import "dart:io";

run_process(IOSink sink) {
  sink.addError("my test error",
      new StackTrace.fromString("my test stack trace"));
 }

run_main(String mode) async {
  String executable = Platform.resolvedExecutable;
  String eScript = Platform.script.toString();
  int called = 0;
  await Process.run(executable, [eScript, mode]).then((ProcessResult results) {
    Expect.isTrue(results.stderr.contains("my test error"));
    Expect.isTrue(results.stderr.contains("my test stack trace"));
    Expect.equals(0, results.stdout.length);
    called++;
  });
  Expect.equals(1, called);
}

main(List<String> args) {
  if(args.length > 0)
    run_process(args[0] == "err" ? stderr : stdout);
  else {
    run_main("out");
    run_main("err");
  }
}