When parallelizings tests using testNG, tests in a

Question

testng.xml:

<suite name="Default Suite" parallel="classes" thread-count="3">
    <test name="example">
        <classes>
            <class name="ExampleTest"/>
            <class name="ExampleTest2"/>
        </classes>
    </test>
</suite>

test :

@Test(singleThreaded = true)
public class ExampleTest {

@Test
public void firstTest() {
    // first test
}

@Test(dependsOnMethods = "firstTest")
public void secondTest() {
    // second test depends from first test
}
}

tests run in three Threads, but the first test is in one thread, and the second in the second, respectively, the second one drops as it depends on the first one. How to run parallel tests such that all tests in one class are executed in one thread ?

Thank you in advance.

Answer 1

There was a bug in TestNG. Here is a link to GitHub issue.

Starting from 7.0.0-beta1 it is fixed. But you should set -Dtestng.thread.affinity=true as JVM argument. IntelliJ IDEA steps: go to Run -> Edit Configurations:

TestClass1:

import org.testng.annotations.Test;
import org.testng.log4testng.Logger;

public class TestClass1 {
    private static final Logger LOGGER = Logger.getLogger(TestClass1.class);

    @Test
    public void test1() {
        LOGGER.warn("TestClass1 - test1. Thread " + Thread.currentThread().getId());
    }

    @Test(dependsOnMethods = "test1")
    public void test2() {
        LOGGER.warn("TestClass1 - test2. Thread " + Thread.currentThread().getId());
    }
}

TestClass2:

public class TestClass2 {
    private static final Logger LOGGER = Logger.getLogger(TestClass1.class);

    @Test
    public void test1() {
        LOGGER.warn("TestClass2 - test1. Thread " + Thread.currentThread().getId());
    }
}

TestNG XML:

<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd" >

<suite name="Default Suite" parallel="classes" thread-count="3">
    <test name="example">
        <classes>
            <class name="com.stackover.project.TestClass1"/>
            <class name="com.stackover.project.TestClass2"/>
        </classes>
    </test>
</suite>

Output:

[TestClass1] [WARN] TestClass1 - test1. Thread 11
[TestClass1] [WARN] TestClass2 - test1. Thread 12
[TestClass1] [WARN] TestClass1 - test2. Thread 11

===============================================
Default Suite
Total tests run: 3, Passes: 3, Failures: 0, Skips: 0
===============================================

P.S: If TestClass1.test1() fails then TestClass1.test2() will be ignored.