With testng, you can annotate your test method like this :

@Test(expectedExceptions = IllegalStateException.class, 
      expectedExceptionsMessageRegExp = "...")
public void your_test() {
  [...]
}

Usually, on a non-blocking tcp server, first accept, then read, then write,

you need to register the selector in this order to make sense.

Example code

Here is a full example of non-blocking io:

TcpChannelTest.java: (a TestNG testing class)

import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.ByteBuffer;
import java.nio.channels.SelectionKey;
import java.nio.channels.Selector;
import java.nio.channels.ServerSocketChannel;
import java.nio.channels.SocketChannel;
import java.nio.charset.StandardCharsets;
import java.util.Iterator;
import java.util.Set;

import org.testng.annotations.Test;

/**
 * tcp channel test
 * 
 * @author eric
 * @date Sep 2, 2012 9:17:40 PM
 */
public class TcpChannelTest {
    public String serverHost = "localhost";
    public int serverPort = 12345;

    private ServerSocketChannel server;
    private int clientSerial = 0;
    private int clientCount = 5;

    // test tcp non-blocking channel,
    @Test
    public void testTcpNonBlockingChanne() throws IOException, InterruptedException {
        // start server
        startServerNonBlocking();

        Thread.sleep(500); // wait server to be ready, before start client,

        // start clients
        for (int i = 0; i < clientCount; i++) {
            startClientOnce();
        }

        // shutdown server,
        Thread.sleep(500); // wait client to be handled,
        shutdownServer();
    }

    // start non-blocking server,
    private void startServerNonBlocking() throws IOException {
        new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    server = ServerSocketChannel.open();
                    server.socket().bind(new InetSocketAddress(serverHost, serverPort)); // bind,
                    server.configureBlocking(false); // non-blocking mode,

                    Selector selector = Selector.open();
                    server.register(selector, SelectionKey.OP_ACCEPT);

                    while (true) {
                        selector.select();
                        Set<SelectionKey> readyKeys = selector.selectedKeys();

                        // process each ready key...
                        Iterator<SelectionKey> iterator = readyKeys.iterator();
                        while (iterator.hasNext()) {
                            SelectionKey key = (SelectionKey) iterator.next();
                            iterator.remove();

                            if (key.isAcceptable()) {
                                SocketChannel client = server.accept();
                                System.out.printf("[%s]:\t%s\n", Thread.currentThread().getName(), "accept connection");
                                client.configureBlocking(false);

                                // prepare for read,
                                client.register(selector, SelectionKey.OP_READ);
                            } else if (key.isReadable()) {
                                // read
                                SocketChannel client = (SocketChannel) key.channel();
                                ByteBuffer inBuf = ByteBuffer.allocate(1024);
                                while (client.read(inBuf) > 0) {
                                    System.out.printf("[%s]:\t%s\n", Thread.currentThread().getName(), new String(inBuf.array(), StandardCharsets.UTF_8));
                                }

                                // prepare for write,
                                client.register(selector, SelectionKey.OP_WRITE);
                            } else if (key.isWritable()) {
                                SocketChannel client = (SocketChannel) key.channel();
                                String response = "hi - from non-blocking server";
                                byte[] bs = response.getBytes(StandardCharsets.UTF_8);
                                ByteBuffer buffer = ByteBuffer.wrap(bs);
                                client.write(buffer);

                                // switch to read, and disable write,
                                client.register(selector, SelectionKey.OP_READ);
                            }
                        }
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }, "t-server-threads").start();
    }

    // close server,
    private void shutdownServer() {
        try {
            if (server != null) {
                server.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    /**
     * <p>
     * tcp client - via channel,
     * </p>
     * <p>
     * It send once request.
     * </p>
     * 
     * @throws IOException
     */
    private void startClientOnce() throws IOException {
        // start client in a new thread
        new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    SocketChannel client = SocketChannel.open(new InetSocketAddress(serverHost, serverPort));

                    // write
                    String request = "hello - from client [" + Thread.currentThread().getName() + "}";
                    byte[] bs = request.getBytes(StandardCharsets.UTF_8);
                    ByteBuffer buffer = ByteBuffer.wrap(bs);
                    while (buffer.hasRemaining()) {
                        client.write(buffer);
                    }

                    // read
                    ByteBuffer inBuf = ByteBuffer.allocate(1024);
                    while (client.read(inBuf) > 0) {
                        System.out.printf("[%s]:\t%s\n", Thread.currentThread().getName(), new String(inBuf.array(), StandardCharsets.UTF_8));
                    }

                    client.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }, "t-channelClient-" + clientSerial++).start();
    }
}

Just specify the path to the binary of the version..may be, like-

FirefoxBinary binary = new FirefoxBinary(new File("path_to_bin"));
FirefoxProfile profile = new FirefoxProfile();
WebDriver driver = new FirefoxDriver(binary, profile);

You can invoke TestNG from your own programs very easily:

TestListenerAdapter tla = new TestListenerAdapter();
TestNG testng = new TestNG();
testng.setTestClasses(new Class[] { Run2.class });
testng.addListener(tla);
testng.run();

This example creates a TestNG object and runs the test class Run2.

For more you can refer here

Similarly, you can invoke TestNG on a testng.xml file or you can create a virtual testng.xml file yourself

For example, suppose you want to create the following virtual file:

<suite name="TmpSuite" >
  <test name="TmpTest" >
    <classes>
      <class name="test.failures.Child"  />
    <classes>
    </test>
</suite>

You would use the following code:

XmlSuite suite = new XmlSuite();
suite.setName("TmpSuite");
XmlTest test = new XmlTest(suite);
test.setName("TmpTest");
List<XmlClass> classes = new ArrayList<XmlClass>();
classes.add(new XmlClass("test.failures.Child"));
test.setXmlClasses(classes) ;  

And then you can pass this XmlSuite to TestNG:

List<XmlSuite> suites = new ArrayList<XmlSuite>();
suites.add(suite);
TestNG tng = new TestNG();
tng.setXmlSuites(suites);
tng.run();

Don't use annotations for your tests. Have a constructor that will wire in all your dependencies.

@Stateless
public class PersonServiceImpl implements PersonService {

    @EJB
    private RemotePersonService remotePersonService;

    // Let your test instantiate a mock service and wire it into your test instance using this constructor.
    public PersonServiceImpl(RemotePersonService rps) {
        this.remotePersonService = rps;
    }

    @Override
    public long countPersons() {
         return remotePersonService.getAllPersons().size();
    }
}

Create mocks and pass them to it. Your test might look like this:

@LocalClient
public class PersonServiceTest extends AbstractTest {

    @Test
    public void testPersonService() {
        RemotePersonService mockRemotePersonService = Mockito.mock(RemotePersonService.class);
        List<Person> customResults = new ArrayList<Person>();
        customResults.add(new Person("Alice"));
        customResults.add(new Person("Bob"));
              Mockito.when(mockRemotePersonService.getAllPersons()).thenReturn(customResults);
        PersonService personService = new PersonServiceImpl(mockRemotePersonService);
        long count = personService.countPersons();    
        Assert.assertEquals(count, 2l);
    }
}

OK, I think this is very specific to TestNG configurations, since all of the JUnit examples work 'out of the box'!

Read through this link from the PowerMock GitHub site which describes further detail on how to use TestNG together with PowerMock. Exactly your scenario of verifying calls to mocked static methods is described there using this example code:

@PrepareForTest(IdGenerator.class)
public class MyTestClass {

   @Test
   public void demoStaticMethodMocking() throws Exception {
      mockStatic(IdGenerator.class);
      when(IdGenerator.generateNewId()).thenReturn(2L);       
      new ClassUnderTest().methodToTest();

      // Optionally verify that the static method was actually called
      verifyStatic();
      IdGenerator.generateNewId();
   }

}

Which is then followed by this nugget of information:

For this to work you need to tell TestNG to use the PowerMock object factory

This is done using either TestNG XML config, or in the test's code itself. For completeness I've copied below the options given at the above URL. FWIW I extended PowerMockTestCase and the verification worked as you expect.

Finally, don't forget to @PrepareForTest the correct class - i.e. the class containing the static methods which you want to mock, as @Bax pointed out here.

As a further hint (which you probably already know about, but worth mentioning here anyway) since you aren't using Mockito to mock objects, MockitoAnnotations.initMocks(this) can be safely deleted.

Once you've got all this working, you might also like to consider whether the use of 'Black Magic' tools like Powermock is actually exposing code smells in your design? Especially since it looks like the classes containing static methods are under your ownership. This means you could use an alternative design that doesn't use statics. I highly recommend Michael Feathers' book Working Effectively with Legacy Code, it might just change your whole approach to software design and testing...

Good luck!

Configure TestNG to use the PowerMock object factory

Using suite.xml

In your suite.xml add the following in the suite tag: object-factory="org.powermock.modules.testng.PowerMockObjectFactory" e.g.

<suite name="dgf" verbose="10"
    object-factory="org.powermock.modules.testng.PowerMockObjectFactory">
    <test name="dgf">
        <classes>
            <class name="com.mycompany.Test1"/>
            <class name="com.mycompany.Test2"/>
        </classes>
    </test> 

If you're using Maven you may need to point out the file to Surefire:

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-surefire-plugin</artifactId>
    <configuration>
        <suiteXmlFiles>
        <suiteXmlFile>suite.xml</suiteXmlFile>
        </suiteXmlFiles>
    </configuration> 
</plugin> 

Programmatically

Add a method like this to your test class:

@ObjectFactory public IObjectFactory getObjectFactory() {
     return new org.powermock.modules.testng.PowerMockObjectFactory(); 
} 

or to be on the safe side you can also extend from the PowerMockTestCase:

@PrepareForTest(IdGenerator.class) 
public class MyTestClass extends PowerMockTestCase { ... }

I had the same problem, and found that it helps to set the field storing test case name in the method annotated with @BeforeMethod, using native injection of TestNG to provide method name and test parameters. The test name is taken from test parameters supplied by the DataProvider. If your test method does not have parameters, just report the method name.

//oversimplified for demontration purposes
public class TestParameters {
    private String testName = null;
    private String testDescription = null;

    public TestParameters(String name,
                          String description) {
        this.testName = name;
        this.testDescription = description;
    }

    public String getTestName() {
        return testName;
    }
    public String getTestDescription() {
        return testDescription;
    }
}

public class SampleTest implements ITest {
    // Has to be set to prevent NullPointerException from reporters
    protected String mTestCaseName = "";

    @DataProvider(name="BasicDataProvider")
    public Object[][] getTestData() {
        Object[][] data = new Object[][] {
                { new TestParameters("TestCase1", "Sample test 1")},
                { new TestParameters("TestCase2", "Sample test 2")},
                { new TestParameters("TestCase3", "Sample test 3")},
                { new TestParameters("TestCase4", "Sample test 4")},
                { new TestParameters("TestCase5", "Sample test 5") }
        };
        return data;
    }

    @BeforeMethod(alwaysRun = true)
    public void testData(Method method, Object[] testData) {
        String testCase = "";
        if (testData != null && testData.length > 0) {
            TestParameters testParams = null;
            //Check if test method has actually received required parameters
            for (Object testParameter : testData) {
                if (testParameter instanceof TestParameters) {
                    testParams = (TestParameters)testParameter;
                    break;
                }
            }
            if (testParams != null) {
                testCase = testParams.getTestName();
            }
        }
        this.mTestCaseName = String.format("%s(%s)", method.getName(), testCase);
    }

    @Override
    public String getTestName() {
        return this.mTestCaseName;
    }

    @Test(dataProvider="BasicDataProvider")
    public void testSample1(TestParameters testParams){
        //test code here
    }

    @Test(dataProvider="BasicDataProvider")
    public void testSample2(TestParameters testParams){
        //test code here
    }

    @Test
    public void testSample3(){
        //test code here
    }
}

EDIT: Based on the comments below, I realized a sample from report will be useful.

Extract from the report from running code above:

<testng-results skipped="0" failed="0" total="5" passed="5">
  <suite name="SampleTests" duration-ms="2818" started-at="<some-time>" finished-at="<some-time>">
    <test name="Test1" duration-ms="2818" started-at="<some-time>" finished-at="<some-time>">
        <test-method 
            status="PASS" 
            signature="testSample1(org.example.test.TestParameters)[pri:0, instance:org.example.test.TimeTest@c9d92c]"
            test-instance-name="testSample1(TestCase5)"
            name="testSample1" 
            duration-ms="1014"
            started-at="<some-time-before>" 
            data-provider="BasicDataProvider" 
            finished-at="<some-time-later>" >
            <!-- excluded for demonstration purposes -->
        </test-method>
        <!-- the rest of test results excluded for brevity -->
    </test>
  </suite>
</testng-result>

Note, that the value returned from getTestName() method is in the test-instance-name attribute, and not in the name attribute.

Your jar file is missing test-runtime dependencies. One possible solution is to package all required dependencies into your jar as well. Note that this will increase the size of your distributable jar.

Add an additional from clause to your jar task:

task fatJar(type: Jar) {
  zip64 = true
  manifest {
    attributes 'Implementation-Title': 'Gradle Jar File Example',
            'Implementation-Version': 1.3,
            'Main-Class': 'org.example.AnIntegrationTest'
  }
  from sourceSets.test.output

  //collect all dependencies
  from { configurations.testRuntime.collect { it.isDirectory() ? it : zipTree(it) } }
  with jar
}

In Selenium 2 with WebDriver you can call

driver = new FirefoxDriver();

which spawns a browser, and that browser will stay open for the duration of your testing,

or you can choose to close it with driver.Quit().

Actually what I want to do?

I like to close my browser window between tests so that I know my tests aren't "dirty" with stored session data that could affect how the tests run, but I can see value in some targeted tests, where I want to try a couple different scenarios while keeping the same session going.

For code level: you can check is it null or not. If null then call the browser to give another.

/**
 * Driver for web application.
 * 
 * @return driver Browser
 * @throws IOException
 */
public WebDriver getDriverBrowser() throws IOException {

if (driverBrowser == null) {
    String sBrowser = PropertyLoader.loadProperty("browser");
    driverBrowser = getBrowser(sBrowser);
    driverBrowser
            .manage()
            .timeouts()
            .implicitlyWait(
                    Integer.valueOf(PropertyLoader
                            .loadProperty("implicit_timeout_sec")),
                    TimeUnit.SECONDS);
    driverBrowser.manage().window().maximize();
}
return driverBrowser;
}

Or you can use xml configuration to use some test cases as class level or test specific.Using TestNG, you can specify which tests you want to run (TestNG will generate an XML file of all of the tests that fail, so when you run it, it will only execute the failed tests).

Issue - 1: I mean i don't want to log in again to continue testing , I don't mind if it opens another window, in fact as you said it's more reliable but not helpful if i have to log in again.

If you don't want to login, then in every testcase, you need a base starting point. After ending any test case, it will go to base position and next testcase will start from the base

Issue - 2: How can i implement a base starting point?

It is up to you. First you have to analyze the test cases, then you have to select which point can be the starting point for all or set of some test cases. Then you can do it.

For more:

1. https://github.com/seleniumhq/selenium-google-code-issue-archive/issues/3927
2. https://sqa.stackexchange.com/questions/1988/selenium-reuse-existing-browser-session-instead-of-opening-new-windows