testng annotations -- how can I pass them diff values each time

[Eyal]

For example I want to pass to invocationcount = 5

same test with 3

4

10

Threadpool size = 6

7

9

10

100

How can I make the threadpool and invocation count values to be external ?

for example from azure pipeline to have it parametrise ?and fully dynamic ?

Thanks!

[⇜Krishnan Mahadevan⇝]

Please do the following:

1. Make sure you are using the latest version of TestNG (7.4.0 as of today)
2. Build an implementation of IAnnotationTransformer interface which works as a listener and then within its transform method (the one that takes in a ITestAnnotation parameter) and flip the desired values. The input form them could be via JVM arguments with a default value if not provided.
3. Wire in this listener either via the <listener> tag or using the service loader mechanism as described in the documentation https://testng.org/doc/documentation-main.html#listeners-service-loader

Thanks & Regards
Krishnan Mahadevan

"All the desirable things in life are either illegal, expensive, fattening or in love with someone else!"
My Scribblings @ http://wakened-cognition.blogspot.com/

My Technical Scribblings @ https://rationaleemotions.com/

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[Eyal Avramchik]

Hi,

tried that:

public class AnnotationTransformer implements IAnnotationTransformer {

    @Override
    public void transform(ITestAnnotation annotation, Class testClass,
                          Constructor testConstructor, Method testMethod) {
        if (testMethod.getName().contains("test01")) {
            System.out.println("The listener is activated for:-" + testMethod.getName());
            annotation.setInvocationCount(3);
            System.out.println("Invocation count is set to :-" + annotation.getInvocationCount());
        }
    

But it doesn't do anything, I didn't forgot to define this class as Listener in the test class

‫בתאריך יום ד׳, 27 באוק׳ 2021 ב-13:22 מאת ‪⇜Krishnan Mahadevan⇝‬‏ <‪krishnan.ma...@gmail.com‬‏>:‬

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[⇜Krishnan Mahadevan⇝]

Implementations of IAnnotationTransformer should not be wired in using the "@Listeners" annotation. Please fix that if thats how you are trying to wire in your listener.

As I mentioned before, it should be wired in via :

1. <listeners> tag in the testng suite xml file.

2. Using the Service Provider Interface mechanism which is detailed in the documentation link that I shared earlier.

I just now tried this and it works.

Thanks & Regards
Krishnan Mahadevan

"All the desirable things in life are either illegal, expensive, fattening or in love with someone else!"
My Scribblings @ http://wakened-cognition.blogspot.com/

My Technical Scribblings @ https://rationaleemotions.com/

To view this discussion on the web visit https://groups.google.com/d/msgid/testng-users/CAEK7TGro_0qCN42%2B63ygoC83%2BfP14axjK1xc5wJxATYBk-i%2BQg%40mail.gmail.com.

[Eyal]

getting this after trying to use service loader:

[TestNG] [WARN] AnnotationTransformer already set

ב-יום רביעי, 27 באוקטובר 2021 בשעה 17:52:14 UTC+3, Krishnan Mahadevan כתב/ה:

[⇜Krishnan Mahadevan⇝]

Can you please create a simple sample project that can be used to reproduce this problem?

You can perhaps upload it into github and share a link (or) if that's not possible, you can maybe attach a zip version of it.

That will be more useful and we can get to the bottom of this much faster.

Thanks & Regards
Krishnan Mahadevan

"All the desirable things in life are either illegal, expensive, fattening or in love with someone else!"
My Scribblings @ http://wakened-cognition.blogspot.com/

My Technical Scribblings @ https://rationaleemotions.com/

To view this discussion on the web visit https://groups.google.com/d/msgid/testng-users/c5e230b0-87bc-45c1-90d4-c37881d78fc1n%40googlegroups.com.

[Eyal]

Hi,

I can do that, but the issue is not the code, probably someting is missing:

1. I am using my working listener class

2. I define it only in the xml listener tag

3. then when I run the test, invocation count remain 0 as the default

What am I missing ? can you please please share the min of code that works ?

structure ?

thanks....

ב-יום חמישי, 28 באוקטובר 2021 בשעה 09:40:47 UTC+3, Krishnan Mahadevan כתב/ה:

[⇜Krishnan Mahadevan⇝]

Here's the sample. I am using TestNG 7.4.0 (latest released version as of today)

import java.util.concurrent.atomic.AtomicInteger;
import org.testng.annotations.Test;

public class SampleTestClass {

  public static final AtomicInteger counter = new AtomicInteger(0);
  @Test
  public void testMethod() {
    System.err.println(counter.incrementAndGet());
  }
}

import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import org.testng.IAnnotationTransformer;
import org.testng.annotations.ITestAnnotation;

public class SimpleTransformer implements IAnnotationTransformer {

  public static final String ITERATIONS_COUNT = "iterations.count";

  @Override
  public void transform(ITestAnnotation annotation, Class testClass, Constructor testConstructor,
      Method testMethod) {
    int count = Integer.parseInt(System.getProperty(ITERATIONS_COUNT, "1"));
    annotation.setInvocationCount(count);
  }
}

Suite xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "https://testng.org/testng-1.0.dtd">
<suite name="sample_suite" verbose="2">
    <listeners>
        <listener class-name="com.rationaleemotions.dynamic.SimpleTransformer"/>
    </listeners>
    <test name="sample_test" verbose="2">
        <classes>
            <class name="com.rationaleemotions.dynamic.SampleTestClass"/>
        </classes>
    </test>
</suite>

And here's a test case that ensures that this works fine.

import static org.assertj.core.api.Assertions.assertThat;

import java.util.Collections;
import org.testng.TestNG;
import org.testng.annotations.Test;

public class TestNGApiRunner {

  @Test
  public void runTest() {
    System.setProperty(SimpleTransformer.ITERATIONS_COUNT, "5");
    TestNG testng = new TestNG();
    testng.setTestClasses(new Class[]{SampleTestClass.class});
    testng.setListenerClasses(Collections.singletonList(SimpleTransformer.class));
    testng.run();
    assertThat(SampleTestClass.counter.get()).isEqualTo(5);
  }
}

Thanks & Regards
Krishnan Mahadevan

"All the desirable things in life are either illegal, expensive, fattening or in love with someone else!"
My Scribblings @ http://wakened-cognition.blogspot.com/

My Technical Scribblings @ https://rationaleemotions.com/

To view this discussion on the web visit https://groups.google.com/d/msgid/testng-users/dc3c5f59-6578-4874-88ef-ae94a3be08b6n%40googlegroups.com.

[Eyal Avramchik]

tried it,

The test is running normally, I would expect the test to run x time as the invocation counter configured, But no.

‫בתאריך יום ו׳, 29 באוק׳ 2021 ב-6:46 מאת ‪⇜Krishnan Mahadevan⇝‬‏ <‪krishnan.ma...@gmail.com‬‏>:‬

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[⇜Krishnan Mahadevan⇝]

Not sure what you mean by that. You can actually pass in a different invocation count as a JVM argument.

Thanks & Regards
Krishnan Mahadevan

"All the desirable things in life are either illegal, expensive, fattening or in love with someone else!"
My Scribblings @ http://wakened-cognition.blogspot.com/

My Technical Scribblings @ https://rationaleemotions.com/

To view this discussion on the web visit https://groups.google.com/d/msgid/testng-users/CAEK7TGqN8dzWNqef-FOkAWQ%2BD68vw-5rrRN4%3DY6zeXVywWi1RA%40mail.gmail.com.