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// Copyright (c) 2015, 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.
// OtherResources=verbose_gc_to_bmu_script.dart
// This test forks a second vm process that runs the BMU tool and verifies that
// it produces some output. This test is mainly here to ensure that the BMU
// tool compiles and runs.
import "dart:async";
import "dart:convert";
import "dart:io";
import "package:path/path.dart";
// Tool script relative to the path of this test.
var toolScript = Uri.parse(Platform.executable)
.resolve("../../runtime/tools/verbose_gc_to_bmu.dart")
.toFilePath();
// Target script relative to this test.
var targetScript =
Platform.script.resolve("verbose_gc_to_bmu_script.dart").toFilePath();
const minOutputLines = 20;
void checkExitCode(targetResult) {
if (exitCode != 0) {
print("Process terminated with exit code ${exitCode}.");
exit(-1);
}
}
void main() {
// Compute paths for tool and target relative to the path of this script.
var targetResult =
Process.runSync(Platform.executable, ["--verbose_gc", targetScript]);
checkExitCode(targetResult);
var gcLog = targetResult.stderr;
Process.start(Platform.executable, [toolScript]).then((Process process) {
// Feed the GC log of the target to the BMU tool.
process.stdin.write(gcLog);
process.stdin.close();
var stdoutStringStream =
process.stdout.transform(utf8.decoder).transform(new LineSplitter());
var stderrStringStream =
process.stderr.transform(utf8.decoder).transform(new LineSplitter());
// Wait for 3 future events: stdout and stderr streams closed, and
// process terminated.
var futures = <Future>[];
var stdoutLines = [];
var stderrLines = [];
var subscription = stdoutStringStream.listen(stdoutLines.add);
futures.add(subscription.asFuture(true));
subscription = stderrStringStream.listen(stderrLines.add);
futures.add(subscription.asFuture(true));
futures.add(process.exitCode.then(checkExitCode));
Future.wait(futures).then((results) {
if (stderrLines.isNotEmpty) {
print("Unexpected output on stderr:");
print(stderrLines.join('\n'));
exit(-1);
}
if (stdoutLines.length < minOutputLines) {
print("Less than expected output on stdout:");
print(stdoutLines.join('\n'));
exit(-1);
}
});
});
}