xamarin-macios/tests/xharness/AppRunner.cs

755 строки
24 KiB
C#

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Xml;
using System.Xml.Xsl;
namespace xharness
{
public enum AppRunnerTarget
{
None,
Simulator_iOS,
Simulator_iOS32,
Simulator_iOS64,
Simulator_tvOS,
Simulator_watchOS,
Device_iOS,
Device_tvOS,
Device_watchOS,
}
public enum Extension
{
WatchKit2,
TodayExtension,
}
public class AppRunner
{
public Harness Harness;
public string ProjectFile;
public string AppPath;
public TestExecutingResult Result { get; private set; }
string appName;
string appPath;
string launchAppPath;
string bundle_identifier;
string platform;
Extension? extension;
bool isSimulator;
string device_name;
string companion_device_name;
string configuration;
public string Configuration {
get { return configuration ?? Harness.Configuration; }
set { configuration = value; }
}
public string DeviceName {
get { return device_name; }
set { device_name = value; }
}
public string CompanionDeviceName {
get { return companion_device_name; }
set { companion_device_name = value; }
}
public bool isExtension {
get {
return extension.HasValue;
}
}
// For watch apps we end up with 2 simulators, the watch simulator (the main one), and the iphone simulator (the companion one).
SimDevice[] simulators;
SimDevice simulator { get { return simulators [0]; } }
SimDevice companion_simulator { get { return simulators.Length == 2 ? simulators [1] : null; } }
AppRunnerTarget target;
public AppRunnerTarget Target {
get { return target == AppRunnerTarget.None ? Harness.Target : target; }
set { target = value; }
}
string log_directory;
public string LogDirectory {
get { return log_directory ?? Harness.LogDirectory; }
set { log_directory = value; }
}
Log main_log;
public Logs Logs = new Logs ();
public Log MainLog {
get { return main_log; }
set { main_log = value; }
}
public SimDevice [] Simulators {
get { return simulators; }
set { simulators = value; }
}
public string BundleIdentifier {
get {
return bundle_identifier;
}
}
string mode;
async Task<bool> FindSimulatorAsync ()
{
if (simulators != null)
return true;
var sims = new Simulators () {
Harness = Harness,
};
await sims.LoadAsync (Logs.CreateStream (LogDirectory, "simulator-list.log", "Simulator list"));
simulators = await sims.FindAsync (Target, main_log);
return simulators != null;
}
void FindDevice ()
{
if (device_name != null)
return;
device_name = Environment.GetEnvironmentVariable ("DEVICE_NAME");
if (!string.IsNullOrEmpty (device_name))
return;
var devs = new Devices () {
Harness = Harness,
};
Task.Run (async () =>
{
await devs.LoadAsync (main_log);
}).Wait ();
string [] deviceClasses;
switch (mode) {
case "ios":
deviceClasses = new string [] { "iPhone", "iPad" };
break;
case "watchos":
deviceClasses = new string [] { "Watch" };
break;
case "tvos":
deviceClasses = new string [] { "AppleTV" }; // Untested
break;
default:
throw new Exception ($"unknown mode: {mode}");
}
var selected = devs.ConnectedDevices.Where ((v) => deviceClasses.Contains (v.DeviceClass));
Device selected_data;
if (selected.Count () == 0) {
throw new Exception ($"Could not find any applicable devices with device class(es): {string.Join (", ", deviceClasses)}");
} else if (selected.Count () > 1) {
selected_data = selected
.OrderBy ((dev) =>
{
Version v;
if (Version.TryParse (dev.ProductVersion, out v))
return v;
return new Version ();
})
.First ();
main_log.WriteLine ("Found {0} devices for device class(es) '{1}': '{2}'. Selected: '{3}' (because it has the lowest version).", selected.Count (), string.Join ("', '", deviceClasses), string.Join ("', '", selected.Select ((v) => v.Name).ToArray ()), selected_data.Name);
} else {
selected_data = selected.First ();
}
device_name = selected_data.Name;
if (mode == "watchos")
companion_device_name = devs.FindCompanionDevice (main_log, selected_data).Name;
}
bool initialized;
public void Initialize ()
{
if (initialized)
return;
initialized = true;
var csproj = new XmlDocument ();
csproj.LoadWithoutNetworkAccess (ProjectFile);
appName = csproj.GetAssemblyName ();
var info_plist_path = csproj.GetInfoPListInclude ();
var info_plist = new XmlDocument ();
info_plist.LoadWithoutNetworkAccess (Path.Combine (Path.GetDirectoryName (ProjectFile), info_plist_path.Replace ('\\', '/')));
bundle_identifier = info_plist.GetCFBundleIdentifier ();
var extensionPointIdentifier = info_plist.GetNSExtensionPointIdentifier ();
if (!string.IsNullOrEmpty (extensionPointIdentifier))
extension = extensionPointIdentifier.ParseFromNSExtensionPointIdentifier ();
switch (Target) {
case AppRunnerTarget.Simulator_iOS32:
mode = "sim32";
platform = "iPhoneSimulator";
isSimulator = true;
break;
case AppRunnerTarget.Simulator_iOS64:
mode = "sim64";
platform = "iPhoneSimulator";
isSimulator = true;
break;
case AppRunnerTarget.Simulator_iOS:
mode = "classic";
platform = "iPhoneSimulator";
isSimulator = true;
break;
case AppRunnerTarget.Device_iOS:
mode = "ios";
platform = "iPhone";
isSimulator = false;
break;
case AppRunnerTarget.Simulator_tvOS:
mode = "tvos";
platform = "iPhoneSimulator";
isSimulator = true;
break;
case AppRunnerTarget.Device_tvOS:
mode = "tvos";
platform = "iPhone";
isSimulator = false;
break;
case AppRunnerTarget.Simulator_watchOS:
mode = "watchos";
platform = "iPhoneSimulator";
isSimulator = true;
break;
case AppRunnerTarget.Device_watchOS:
mode = "watchos";
platform = "iPhone";
isSimulator = false;
break;
default:
throw new Exception (string.Format ("Unknown target: {0}", Harness.Target));
}
appPath = Path.Combine (Path.GetDirectoryName (ProjectFile), csproj.GetOutputPath (platform, Configuration).Replace ('\\', '/'), appName + (isExtension ? ".appex" : ".app"));
if (!Directory.Exists (appPath))
throw new Exception (string.Format ("The app directory {0} does not exist. This is probably a bug in the test harness.", appPath));
if (mode == "watchos") {
launchAppPath = Directory.GetDirectories (Path.Combine (appPath, "Watch"), "*.app") [0];
} else {
launchAppPath = appPath;
}
}
public async Task<ProcessExecutionResult> InstallAsync ()
{
Initialize ();
if (isSimulator) {
// We reset the simulator when running, so a separate install step does not make much sense.
throw new Exception ("Installing to a simulator is not supported.");
}
FindDevice ();
var args = new StringBuilder ();
if (!string.IsNullOrEmpty (Harness.XcodeRoot))
args.Append (" --sdkroot ").Append (Harness.XcodeRoot);
for (int i = -1; i < Harness.Verbosity; i++)
args.Append (" -v ");
args.Append (" --installdev");
args.AppendFormat (" \"{0}\" ", appPath);
AddDeviceName (args, companion_device_name ?? device_name);
if (mode == "watchos")
args.Append (" --device ios,watchos");
return await ProcessHelper.ExecuteCommandAsync (Harness.MlaunchPath, args.ToString (), main_log, TimeSpan.FromMinutes (mode == "watchos" ? 15 : 3));
}
public async Task<ProcessExecutionResult> UninstallAsync ()
{
Initialize ();
if (isSimulator)
throw new Exception ("Uninstalling from a simulator is not supported.");
FindDevice ();
var args = new StringBuilder ();
if (!string.IsNullOrEmpty (Harness.XcodeRoot))
args.Append (" --sdkroot ").Append (Harness.XcodeRoot);
for (int i = -1; i < Harness.Verbosity; i++)
args.Append (" -v ");
args.Append (" --uninstalldevbundleid");
args.AppendFormat (" \"{0}\" ", bundle_identifier);
AddDeviceName (args, companion_device_name ?? device_name);
return await ProcessHelper.ExecuteCommandAsync (Harness.MlaunchPath, args.ToString (), main_log, TimeSpan.FromMinutes (1));
}
bool ensure_clean_simulator_state = true;
public bool EnsureCleanSimulatorState {
get {
return ensure_clean_simulator_state && string.IsNullOrEmpty (Environment.GetEnvironmentVariable ("SKIP_SIMULATOR_SETUP"));
}
set {
ensure_clean_simulator_state = value;
}
}
void GenerateHumanReadableLogs (string finalPath, string logHeader, XmlDocument doc)
{
// load the resource that contains the xslt and apply it to the doc and write the logs
if (File.Exists (finalPath)) {
// if the file does exist, remove it
File.Delete (finalPath);
}
using (var strm = Assembly.GetExecutingAssembly ().GetManifestResourceStream ("xharness.nunit-summary.xslt"))
using (var xsltReader = XmlReader.Create (strm))
using (var xmlReader = new XmlNodeReader (doc))
using (var writer = new StreamWriter (finalPath)) {
writer.Write (logHeader);
var xslt = new XslCompiledTransform ();
xslt.Load (xsltReader);
xslt.Transform (xmlReader, null, writer);
writer.Flush ();
}
}
public bool TestsSucceeded (LogStream listener_log, bool timed_out, bool crashed)
{
string log;
using (var reader = listener_log.GetReader ())
log = reader.ReadToEnd ();
// parsing the result is different if we are in jenkins or nor.
if (Harness.InJenkins) {
// we have to parse the xml result
crashed = false;
if (log.Contains ("test-results")) {
// remove any possible extra info
var index = log.IndexOf ("<test-results");
var header = log.Substring(0, log.IndexOf ('<'));
log = log.Remove (0, index - 1);
var testsResults = new XmlDocument ();
testsResults.LoadXml (log);
var mainResultNode = testsResults.SelectSingleNode("test-results");
if (mainResultNode == null) {
Harness.LogWrench ($"Node is null.");
crashed = true;
return false;
}
// update the information of the main node to add information about the mode and the test that is excuted. This will later create
// nicer reports in jenkins
mainResultNode.Attributes["name"].Value = Target.AsString ();
// store a clean version of the logs, later this will be used by the bots to show results in github/web
var path = listener_log.FullPath;
path = path.Replace (".log", ".xml");
testsResults.Save (path);
Logs.Add (new LogFile ("Test xml", path));
// we want to keep the old TestResult page,
GenerateHumanReadableLogs (listener_log.FullPath, header, testsResults);
int ignored = Convert.ToInt16(mainResultNode.Attributes["ignored"].Value);
int invalid = Convert.ToInt16(mainResultNode.Attributes["invalid"].Value);
int inconclusive = Convert.ToInt16(mainResultNode.Attributes["inconclusive"].Value);
int errors = Convert.ToInt16(mainResultNode.Attributes["errors"].Value);
int failures = Convert.ToInt16(mainResultNode.Attributes["failures"].Value);
int totalTests = Convert.ToInt16(mainResultNode.Attributes["total"].Value);
// generate human readable logs
var failed = errors != 0 || failures != 0;
if (failed) {
Harness.LogWrench ($"@MonkeyWrench: AddSummary: <b>{mode} failed: Test run: {totalTests} Passed: {totalTests - invalid - inconclusive - ignored} Inconclusive: {inconclusive} Failed: {errors + failures} Ignored: {ignored}</b><br/>");
main_log.WriteLine ("Test run failed");
return false;
} else {
Harness.LogWrench ($"@MonkeyWrench: AddSummary: {mode} succeeded: Test run: {totalTests} Passed: {totalTests - invalid - inconclusive - ignored} Inconclusive: {inconclusive} Failed: 0 Ignored: {ignored}<br/>");
main_log.WriteLine ("Test run succeeded");
return true;
}
} else if (timed_out) {
Harness.LogWrench ($"@MonkeyWrench: AddSummary: <b><i>{mode} timed out</i></b><br/>");
return false;
} else {
Harness.LogWrench ($"@MonkeyWrench: AddSummary: <b><i>{mode} crashed</i></b><br/>");
main_log.WriteLine ("Test run crashed");
crashed = true;
return false;
}
} else {
// parsing the human readable results
if (log.Contains ("Tests run")) {
var tests_run = string.Empty;
var log_lines = log.Split ('\n');
var failed = false;
foreach (var line in log_lines) {
if (line.Contains ("Tests run:")) {
Console.WriteLine (line);
tests_run = line.Replace ("Tests run: ", "");
break;
} else if (line.Contains ("FAIL")) {
Console.WriteLine (line);
failed = true;
}
}
if (failed) {
Harness.LogWrench ("@MonkeyWrench: AddSummary: <b>{0} failed: {1}</b><br/>", mode, tests_run);
main_log.WriteLine ("Test run failed");
return false;
} else {
Harness.LogWrench ("@MonkeyWrench: AddSummary: {0} succeeded: {1}<br/>", mode, tests_run);
main_log.WriteLine ("Test run succeeded");
return true;
}
} else if (timed_out) {
Harness.LogWrench ("@MonkeyWrench: AddSummary: <b><i>{0} timed out</i></b><br/>", mode);
return false;
} else {
Harness.LogWrench ("@MonkeyWrench: AddSummary: <b><i>{0} crashed</i></b><br/>", mode);
main_log.WriteLine ("Test run crashed");
crashed = true;
return false;
}
}
}
[DllImport ("/usr/lib/libc.dylib")]
extern static IntPtr ttyname (int filedes);
public async Task<int> RunAsync ()
{
CrashReportSnapshot crash_reports;
LogStream device_system_log = null;
LogStream listener_log = null;
Log run_log = main_log;
Initialize ();
if (!isSimulator)
FindDevice ();
crash_reports = new CrashReportSnapshot ()
{
Device = !isSimulator,
DeviceName = device_name,
Harness = Harness,
Log = main_log,
Logs = Logs,
LogDirectory = LogDirectory,
};
var args = new StringBuilder ();
if (!string.IsNullOrEmpty (Harness.XcodeRoot))
args.Append (" --sdkroot ").Append (Harness.XcodeRoot);
for (int i = -1; i < Harness.Verbosity; i++)
args.Append (" -v ");
args.Append (" -argument=-connection-mode -argument=none"); // This will prevent the app from trying to connect to any IDEs
args.Append (" -argument=-app-arg:-autostart");
args.Append (" -setenv=NUNIT_AUTOSTART=true");
args.Append (" -argument=-app-arg:-autoexit");
args.Append (" -setenv=NUNIT_AUTOEXIT=true");
args.Append (" -argument=-app-arg:-enablenetwork");
args.Append (" -setenv=NUNIT_ENABLE_NETWORK=true");
// detect if we are using a jenkins bot.
if (Harness.InJenkins)
args.Append (" -setenv=NUNIT_ENABLE_XML_OUTPUT=true");
if (isSimulator) {
args.Append (" -argument=-app-arg:-hostname:127.0.0.1");
args.Append (" -setenv=NUNIT_HOSTNAME=127.0.0.1");
} else {
var ips = new StringBuilder ();
var ipAddresses = System.Net.Dns.GetHostEntry (System.Net.Dns.GetHostName ()).AddressList;
for (int i = 0; i < ipAddresses.Length; i++) {
if (i > 0)
ips.Append (',');
ips.Append (ipAddresses [i].ToString ());
}
args.AppendFormat (" -argument=-app-arg:-hostname:{0}", ips.ToString ());
args.AppendFormat (" -setenv=NUNIT_HOSTNAME={0}", ips.ToString ());
}
var transport = mode == "watchos" ? "HTTP" : "TCP";
args.AppendFormat (" -argument=-app-arg:-transport:{0}", transport);
args.AppendFormat (" -setenv=NUNIT_TRANSPORT={0}", transport);
SimpleListener listener;
switch (transport) {
case "HTTP":
listener = new SimpleHttpListener ();
break;
case "TCP":
listener = new SimpleTcpListener ();
break;
default:
throw new NotImplementedException ();
}
listener_log = Logs.CreateStream (LogDirectory, string.Format ("test-{0}-{1:yyyyMMdd_HHmmss}.log", mode, DateTime.Now), "Test log");
listener.TestLog = listener_log;
listener.Log = main_log;
listener.AutoExit = true;
listener.Address = System.Net.IPAddress.Any;
listener.Initialize ();
args.AppendFormat (" -argument=-app-arg:-hostport:{0}", listener.Port);
args.AppendFormat (" -setenv=NUNIT_HOSTPORT={0}", listener.Port);
listener.StartAsync ();
var cancellation_source = new CancellationTokenSource ();
var timed_out = false;
ThreadPool.QueueUserWorkItem ((v) =>
{
if (!listener.WaitForConnection (TimeSpan.FromMinutes (Harness.LaunchTimeout))) {
cancellation_source.Cancel ();
main_log.WriteLine ("Test launch timed out after {0} minute(s).", Harness.LaunchTimeout);
timed_out = true;
} else {
main_log.WriteLine ("Test run started");
}
});
foreach (var kvp in Harness.EnvironmentVariables)
args.AppendFormat (" -setenv={0}={1}", kvp.Key, kvp.Value);
bool? success = null;
bool launch_failure = false;
if (isExtension) {
switch (extension) {
case Extension.TodayExtension:
args.Append (isSimulator ? " --launchsimbundleid" : " --launchdevbundleid");
args.Append (" todayviewforextensions:");
args.Append (BundleIdentifier);
args.Append (" --observe-extension ");
args.Append (Harness.Quote (launchAppPath));
break;
case Extension.WatchKit2:
default:
throw new NotImplementedException ();
}
} else {
args.Append (isSimulator ? " --launchsim " : " --launchdev ");
args.Append (Harness.Quote (launchAppPath));
}
if (isSimulator) {
if (!await FindSimulatorAsync ())
return 1;
if (mode != "watchos") {
var stderr_tty = Marshal.PtrToStringAuto (ttyname (2));
if (!string.IsNullOrEmpty (stderr_tty)) {
args.Append (" --stdout=").Append (Harness.Quote (stderr_tty));
args.Append (" --stderr=").Append (Harness.Quote (stderr_tty));
} else {
var stdout_log = Logs.CreateFile ("Standard output", Path.Combine (LogDirectory, "stdout.log"));
var stderr_log = Logs.CreateFile ("Standard error", Path.Combine (LogDirectory, "stderr.log"));
args.Append (" --stdout=").Append (Harness.Quote (stdout_log.FullPath));
args.Append (" --stderr=").Append (Harness.Quote (stderr_log.FullPath));
}
}
var systemLogs = new List<CaptureLog> ();
foreach (var sim in simulators) {
// Upload the system log
main_log.WriteLine ("System log for the '{1}' simulator is: {0}", sim.SystemLog, sim.Name);
bool isCompanion = sim != simulator;
var log = new CaptureLog (sim.SystemLog, entire_file: Harness.Action != HarnessAction.Jenkins)
{
Path = Path.Combine (LogDirectory, sim.Name + ".log"),
Description = isCompanion ? "System log (companion)" : "System log",
};
log.StartCapture ();
Logs.Add (log);
systemLogs.Add (log);
Harness.LogWrench ("@MonkeyWrench: AddFile: {0}", log.Path);
}
main_log.WriteLine ("*** Executing {0}/{1} in the simulator ***", appName, mode);
if (EnsureCleanSimulatorState) {
foreach (var sim in simulators)
await sim.PrepareSimulatorAsync (main_log, bundle_identifier);
}
args.Append (" --device=:v2:udid=").Append (simulator.UDID).Append (" ");
await crash_reports.StartCaptureAsync ();
main_log.WriteLine ("Starting test run");
var result = await ProcessHelper.ExecuteCommandAsync (Harness.MlaunchPath, args.ToString (), run_log, TimeSpan.FromMinutes (Harness.Timeout), cancellation_token: cancellation_source.Token);
if (result.TimedOut) {
timed_out = true;
success = false;
main_log.WriteLine ("Test run timed out after {0} minute(s).", Harness.Timeout);
} else if (result.Succeeded) {
main_log.WriteLine ("Test run completed");
success = true;
} else {
main_log.WriteLine ("Test run failed");
success = false;
}
if (!success.Value) {
// find pid
var pid = -1;
using (var reader = run_log.GetReader ()) {
while (!reader.EndOfStream) {
var line = reader.ReadLine ();
if (line.StartsWith ("Application launched. PID = ", StringComparison.Ordinal)) {
var pidstr = line.Substring ("Application launched. PID = ".Length);
if (!int.TryParse (pidstr, out pid))
main_log.WriteLine ("Could not parse pid: {0}", pidstr);
} else if (line.Contains ("Xamarin.Hosting: Launched ") && line.Contains (" with pid ")) {
var pidstr = line.Substring (line.LastIndexOf (' '));
if (!int.TryParse (pidstr, out pid))
main_log.WriteLine ("Could not parse pid: {0}", pidstr);
} else if (line.Contains ("error MT1008")) {
launch_failure = true;
}
}
}
if (pid > 0) {
var launchTimedout = cancellation_source.IsCancellationRequested;
var timeoutType = launchTimedout ? "Launch" : "Completion";
var timeoutValue = launchTimedout ? Harness.LaunchTimeout : Harness.Timeout;
main_log.WriteLine ($"{timeoutType} timed out after {timeoutValue}");
await Process_Extensions.KillTreeAsync (pid, main_log, true);
} else {
main_log.WriteLine ("Could not find pid in mtouch output.");
}
}
listener.Cancel ();
// cleanup after us
if (EnsureCleanSimulatorState)
await SimDevice.KillEverythingAsync (main_log);
foreach (var log in systemLogs)
log.StopCapture ();
} else {
main_log.WriteLine ("*** Executing {0}/{1} on device '{2}' ***", appName, mode, device_name);
if (mode == "watchos") {
args.Append (" --attach-native-debugger"); // this prevents the watch from backgrounding the app.
} else {
args.Append (" --wait-for-exit");
}
AddDeviceName (args);
device_system_log = Logs.CreateStream (LogDirectory, $"device-{device_name}-{DateTime.Now:yyyyMMdd_HHmmss}.log", "Device log");
var logdev = new DeviceLogCapturer () {
Harness = Harness,
Log = device_system_log,
DeviceName = device_name,
};
logdev.StartCapture ();
await crash_reports.StartCaptureAsync ();
main_log.WriteLine ("Starting test run");
var result = await ProcessHelper.ExecuteCommandAsync (Harness.MlaunchPath, args.ToString (), main_log, TimeSpan.FromMinutes (Harness.Timeout), cancellation_token: cancellation_source.Token);
if (result.TimedOut) {
timed_out = true;
success = false;
main_log.WriteLine ("Test run timed out after {0} minute(s).", Harness.Timeout);
} else if (result.Succeeded) {
main_log.WriteLine ("Test run completed");
success = true;
} else {
main_log.WriteLine ("Test run failed");
success = false;
}
logdev.StopCapture ();
// Upload the system log
if (File.Exists (device_system_log.FullPath)) {
main_log.WriteLine ("A capture of the device log is: {0}", device_system_log.FullPath);
Harness.LogWrench ("@MonkeyWrench: AddFile: {0}", device_system_log.FullPath);
}
}
listener.Dispose ();
// check the final status
var crashed = false;
if (File.Exists (listener_log.FullPath)) {
Harness.LogWrench ("@MonkeyWrench: AddFile: {0}", listener_log.FullPath);
success = TestsSucceeded (listener_log, timed_out, crashed);
} else if (timed_out) {
Harness.LogWrench ("@MonkeyWrench: AddSummary: <b><i>{0} never launched</i></b><br/>", mode);
main_log.WriteLine ("Test run never launched");
success = false;
} else if (launch_failure) {
Harness.LogWrench ("@MonkeyWrench: AddSummary: <b><i>{0} failed to launch</i></b><br/>", mode);
main_log.WriteLine ("Test run failed to launch");
success = false;
} else {
Harness.LogWrench ("@MonkeyWrench: AddSummary: <b><i>{0} crashed at startup (no log)</i></b><br/>", mode);
main_log.WriteLine ("Test run crashed before it started (no log file produced)");
crashed = true;
success = false;
}
if (!success.HasValue)
success = false;
await crash_reports.EndCaptureAsync (TimeSpan.FromSeconds (success.Value ? 0 : 5));
if (timed_out) {
Result = TestExecutingResult.TimedOut;
} else if (crashed) {
Result = TestExecutingResult.Crashed;
} else if (success.Value) {
Result = TestExecutingResult.Succeeded;
} else {
Result = TestExecutingResult.Failed;
}
return success.Value ? 0 : 1;
}
public void AddDeviceName (StringBuilder args)
{
AddDeviceName (args, device_name);
}
public static void AddDeviceName (StringBuilder args, string device_name)
{
if (!string.IsNullOrEmpty (device_name)) {
args.Append (" --devname ");
args.Append (Harness.Quote (device_name));
}
}
}
}