blob: f96a48c4473913d6a16b38e9e9314daef3046ac0 [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.
import 'dart:async';
import 'dart:convert';
import 'dart:io' show exitCode, stdin;
import 'package:analyzer/error/error.dart';
typedef Future<ErrorSeverity> BatchRunnerHandler(List<String> args);
/// Provides a framework to read command line options from stdin and feed them
/// to a callback.
class BatchRunner {
final outSink;
final errorSink;
BatchRunner(this.outSink, this.errorSink);
/// Run the tool in 'batch' mode, receiving command lines through stdin and
/// returning pass/fail status through stdout. This feature is intended for
/// use in unit testing.
void runAsBatch(List<String> sharedArgs, BatchRunnerHandler handler) {
outSink.writeln('>>> BATCH START');
Stopwatch stopwatch = new Stopwatch();
stopwatch.start();
int testsFailed = 0;
int totalTests = 0;
ErrorSeverity batchResult = ErrorSeverity.NONE;
// Read line from stdin.
Stream<String> cmdLine =
stdin.transform(utf8.decoder).transform(new LineSplitter());
cmdLine.listen((String line) async {
// TODO(brianwilkerson) Determine whether this await is necessary.
await null;
// Maybe finish.
if (line.isEmpty) {
var time = stopwatch.elapsedMilliseconds;
outSink.writeln(
'>>> BATCH END (${totalTests - testsFailed}/$totalTests) ${time}ms');
exitCode = batchResult.ordinal;
}
// Prepare arguments.
var lineArgs = line.split(new RegExp('\\s+'));
var args = new List<String>();
args.addAll(sharedArgs);
args.addAll(lineArgs);
args.remove('-b');
args.remove('--batch');
// Analyze single set of arguments.
try {
totalTests++;
ErrorSeverity result = await handler(args);
bool resultPass = result != ErrorSeverity.ERROR;
if (!resultPass) {
testsFailed++;
}
batchResult = batchResult.max(result);
// Write stderr end token and flush.
errorSink.writeln('>>> EOF STDERR');
String resultPassString = resultPass ? 'PASS' : 'FAIL';
outSink.writeln(
'>>> TEST $resultPassString ${stopwatch.elapsedMilliseconds}ms');
} catch (e, stackTrace) {
errorSink.writeln(e);
errorSink.writeln(stackTrace);
errorSink.writeln('>>> EOF STDERR');
outSink.writeln('>>> TEST CRASH');
}
});
}
}