startAll method
Implementation
Future<void> startAll() async {
try {
for (final config in configs) {
if (await _isReady(config.resolvedReadyUrl)) continue;
final service = await _RunningTestService.start(config);
_running.add(service);
await service.waitUntilReady();
}
} catch (_) {
await stopAll();
rethrow;
}
}