LibTest/io/Stdin/supportsAnsiEscapes_A02_t01.dart

// Copyright (c) 2018, 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 bool supportsAnsiEscapes
/// Currently, a [TERM] environment variable containing the string [xterm] will
/// be taken as evidence that ANSI escape sequences are supported.
/// @description Checks that [supportsAnsiEscapes] is set [true] if [TERM]
/// environment variable is [xterm].
/// @author iarkh@unipro.ru

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

main(List<String> args) {
  if(Platform.environment.containsKey("TERM") &&
      Platform.environment["TERM"] == "xterm")
    Expect.isTrue(stdin.supportsAnsiEscapes);
  else
    Expect.isFalse(stdin.supportsAnsiEscapes);
}