Program start testNG selenium tests freezes

When programmatically starting selenium tests using testNG, the process freezes. All tests succeed, but the process does not end and does not return any exit code.

Example

Main.java

package com.example;

import org.testng.TestNG;
import org.testng.xml.XmlClass;
import org.testng.xml.XmlSuite;
import org.testng.xml.XmlTest;

import java.util.ArrayList;
import java.util.List;

public class Main {
    public static void main(String[] args) {
        TestNG testNG = new TestNG();
        List<XmlSuite> xmlSuites = new ArrayList<>();

        XmlSuite xmlSuite = new XmlSuite();

        List<XmlTest> xmlTestList = new ArrayList<>();
        XmlTest xmlTest = new XmlTest(xmlSuite);

        List<XmlClass> xmlClassList = new ArrayList<>();
        xmlClassList.add(new XmlClass(TestOne.class));
        xmlTest.setXmlClasses(xmlClassList);
        xmlTestList.add(xmlTest);

        xmlSuite.setTests(xmlTestList);
        xmlSuites.add(xmlSuite);
        testNG.setXmlSuites(xmlSuites);
        testNG.run();
    }
}

TestOne.java

package com.example;

import io.github.bonigarcia.wdm.WebDriverManager;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.testng.annotations.AfterSuite;
import org.testng.annotations.BeforeSuite;
import org.testng.annotations.Test;

public class TestOne {

    private WebDriver webDriver;

    @BeforeSuite
    public void prepare() {
        WebDriverManager.chromedriver().setup();
        this.webDriver = new ChromeDriver();
    }

    @Test
    public void testOne() {
        webDriver.get("http://google.com/");
    }

    @AfterSuite
    public void shutdown() {
        if (webDriver != null) {
            webDriver.close();
        }
    }
}

At startup

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
Starting ChromeDriver 80.0.3987.106 (f68069574609230cf9b635cd784cfb1bf81bb53a-refs/branch-heads/3987@{#882}) on port 27439
Only local connections are allowed.
Please protect ports used by ChromeDriver and related test frameworks to prevent access by malicious code.
Apr 09, 2020 10:12:50 PM org.openqa.selenium.remote.ProtocolHandshake createSession
INFO: Detected dialect: W3C

===============================================
Default Suite
Total tests run: 1, Passes: 1, Failures: 0, Skips: 0
===============================================

But the process does not end

Debug and Streis did not help much. Found out that AsyncHttpTimer hangs, which checks the port on localhost

the problem was in the alpha version of selenium

there is issue on github https://github.com/SeleniumHQ/selenium/issues/8159

transition to 3 stable version solved the problem