blob: 41f7a9f5263dece0226b256c77114d7ee1a38734 [file] [log] [blame]
// 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 Future flush()
/// Returns a [Future] that completes once all buffered data is accepted by the
/// underlying [StreamConsumer].
/// @description Checks that data is flushed after the [flush] call.
/// @author iarkh@unipro.ru
import "../../../Utils/expect.dart";
import "dart:async";
import "dart:io";
int flushed = 0;
int cnt = 0;
class MyStreamConsumer extends StreamConsumer<List<int>> {
Future addStream(Stream<List<int>> stream) {
return new Future(() {}).then((x) { cnt++; } );
}
Future close() { return new Future(() {}); }
}
test() async {
Stream<List<int>> stream1 = new Stream<List<int>>.fromIterable([[1, 2]]);
Stream<List<int>> stream2 = new Stream<List<int>>.fromIterable([[12], [3, 22]]);
Stream<List<int>> stream3 = new Stream<List<int>>.fromIterable([[3, 22]]);
Stream<List<int>> stream4 = new Stream<List<int>>.fromIterable([[1, 1, 2, 1], [12]]);
Stream<List<int>> stream5 = new Stream<List<int>>.fromIterable([[1, 2]]);
StreamConsumer consumer = new MyStreamConsumer();
IOSink sink = new IOSink(consumer);
await sink.addStream(stream1).then((x) { cnt++; });
sink.add([0]);
await sink.addStream(stream2).then((x) { cnt++; });
sink.write(12);
await sink.addStream(stream3).then((x) { cnt++; });
sink.writeln("This is a test");
sink.writeAll([129, null, 88, "test"]);
await sink.addStream(stream4).then((x) { cnt++; });
await sink.addStream(stream5).then((x) { cnt++; });
sink.writeln("This is a test");
sink.writeAll([129, null, 88, "test"]);
sink.writeAll([0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0]);
await sink.flush().then((x) {
Expect.equals(14, cnt);
flushed++;
});
await sink.close();
Expect.equals(1, flushed);
asyncEnd();
}
main() {
asyncStart();
test();
}