Brian Wilkerson
0190d20bd6
Change-Id: I0a37352c903bf7139af25aab255fe6a5331ce98b Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/194020 Reviewed-by: Konstantin Shcheglov <scheglov@google.com> Commit-Queue: Brian Wilkerson <brianwilkerson@google.com>
38 lines
1.3 KiB
Dart
38 lines
1.3 KiB
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.
|
|
|
|
/// A utility class used to write logging information during a test.
|
|
class Logger {
|
|
/// The width of the field in which labels are printed.
|
|
static const int _labelWidth = 8;
|
|
|
|
/// The separator used to separate the label from the content.
|
|
static const String _separator = ' : ';
|
|
|
|
/// The sink to which the logged information should be written.
|
|
final StringSink sink;
|
|
|
|
/// Initialize a newly created logger to write to the given [sink].
|
|
Logger(this.sink);
|
|
|
|
/// Log the given information.
|
|
///
|
|
/// The [label] is used to indicate the kind of information being logged,
|
|
/// while the [content] contains the actual information. If a list of
|
|
/// [arguments] is provided, then they will be written after the content.
|
|
void log(String label, String content, {List<String>? arguments}) {
|
|
for (var i = _labelWidth - label.length; i > 0; i--) {
|
|
sink.write(' ');
|
|
}
|
|
sink.write(label);
|
|
sink.write(_separator);
|
|
sink.write(content);
|
|
arguments?.forEach((String argument) {
|
|
sink.write(' ');
|
|
sink.write(argument);
|
|
});
|
|
sink.writeln();
|
|
}
|
|
}
|