Pass dynamic value to test method parameter using TestNG class - selenium

Question

I am automating a web page which runs in multi-threading environment, so I am exporting every test result into a file system and I wanted to maintain every test result uniquely for the future reference. So is there a way to pass file name as parameter to a test method dynamically while calling it from TestNG class.
I know we can pass parameters from .xml file but if I do that the values will more like static and can be seen by all the thread running parallel.
Test class will be called from main method as bellow
public class Test {
public static void main(String[] args) throws ParseException {
try
{
TestNG testng = new TestNG();
testng.setTestClasses(new Class[] { Testing.class });
testng.run();
}
catch(Exception e)
{
e.printStackTrace();
}
}
}
Bellow code is my test method
public class Testing {
#Test
#Parameters("filename")
public void testMethod(String fileName){
System.out.println("filename is: "+fileName);
// ---- remaining test logic -----
}
}
Or can we use TestListenerAdapter onStart() method to inject parameter values...?.

Answer 1

If you want unique file name you can just add it a time stamp
Date date = new Date();
Format formatter = new SimpleDateFormat("yyyy-MM-dd_HH:mm:ss");
String timeStamp = formatter.format(date);
String fileName = "TestResults-" + timeStamp;

Answer 2

You can store your values into ITestContext which will be available for all tests.
You can set up the values in a configuration method (#BeforeSuite for example) or a listener.

Answer 3

Pass Dynamic Parameters to TestNG suite during runtime
What the below code does:
I want to add a list of parameters to each test during runtime. These parameters are passed as maven runtime arguments. They are read using System.getProperty() method as shown below. Then these parameters are added to the test inside suite and testng is ran successfully. This can be really useful in other scenarios as well.
The below code reads the testng.xml file and adds parameter to
List<String> parameters = new ArrayList<>();
parameters = Arrays.asList(System.getProperty("parameters").split(",");
TestNG tng = new TestNG();
File initialFile = new File("testng.xml");
InputStream inputStream = FileUtils.openInputStream(initialFile);
Parser p = new Parser(inputStream);
List<XmlSuite> suites = p.parseToList();
for(XmlSuite suite:suites){
List<XmlTest> tests = suite.getTests();
for (XmlTest test : tests) {
for (int i = 0; i < parameters.size(); i++) {
HashMap<String, String> parametersMap = new HashMap<>();
parametersMap.put("parameter",parameters.get(i));
test.setParameters(parametersMap);
}
}
}
tng.setXmlSuites(suites);
tng.run();