Add JUnit XML report output for each device.

[JakeWharton]

Closes #100.

[RichardGuion]

There are 2 problems with the code. One: it creates a directory with the format <serial_number>.xml instead of a file. Two: it doesn't create an xml file with results because XmlTestRunListener getResultFile was confused over the File parameter vs the File member object.

I tried pushing a branch to you and it failed, so here is the code to fix it. After I made these changes, the xml files were generated in the junit_report directory.

SpoonDeviceRunner

public final class SpoonDeviceRunner {
private static final String FILE_EXECUTION = "execution.json";
private static final String FILE_RESULT = "result.json";
static final String TEMP_DIR = "work";
static final String JUNIT_DIR = "junit-reports";

private final File sdk;
private final File apk;
private final File testApk;
private final String serial;
private final boolean debug;
private final File output;
private final String className;
private final String methodName;
private final File work;
private final File junitReport;
private final File junitReportDir;
private final String classpath;
private final SpoonInstrumentationInfo instrumentationInfo;

/**

• Create a test runner for a single device.
  *
• @param sdk Path to the local Android SDK directory.
• @param apk Path to application APK.
• @param testApk Path to test application APK.
• @param output Path to output directory.
• @param serial Device to run the test on.
• @param debug Whether or not debug logging is enabled.
• @param classpath Custom JVM classpath or {@code null}.
• @param instrumentationInfo Test apk manifest information.
• @param className Test class name to run or {@code null} to run all tests.
• @param methodName Test method name to run or {@code null} to run all tests. Must also pass

•    {@code className}.
  

  */
  SpoonDeviceRunner(File sdk, File apk, File testApk, File output, String serial, boolean debug,
  String classpath, SpoonInstrumentationInfo instrumentationInfo, String className,
  String methodName) {
  this.sdk = sdk;
  this.apk = apk;
  this.testApk = testApk;
  this.serial = serial;
  this.debug = debug;
  this.output = output;
  this.className = className;
  this.methodName = methodName;
  this.work = FileUtils.getFile(output, TEMP_DIR, serial);
  this.junitReportDir = FileUtils.getFile(output, JUNIT_DIR);
  this.junitReport = FileUtils.getFile(output, JUNIT_DIR, serial + ".xml");
  this.classpath = classpath;
  this.instrumentationInfo = instrumentationInfo;
  }

....

/** Execute instrumentation on the target device and return a result summary. */
public DeviceResult run(AndroidDebugBridge adb) {
....
// Run all the tests! o/
try {
logDebug(debug, "About to actually run tests for [%s]", serial);

  // create the directory for junit report result
  junitReportDir.mkdirs();

  RemoteAndroidTestRunner runner = new RemoteAndroidTestRunner(testPackage, testRunner, device);

XmlTestRunListener:

class XmlTestRunListener extends com.android.ddmlib.testrunner.XmlTestRunListener {
private final File xmlResultFile;

XmlTestRunListener(File file) {
this.xmlResultFile = file;
}

@OverRide protected File getResultFile(File file) throws IOException {
return xmlResultFile;
}
}

[JakeWharton]

I already fixed that and tested it with 6 devices. It generates a folder with 6 XML files using the serial as the filename.

[RichardGuion]

Great! Glad to see all this Spoon activity. :-)