DemoTestWatcher.java

import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;

public class DemoTestWatcher {
    @Before
    public void setUp() {
        /**
         * Do something before test
         */
    }

    @After
    public void tearDown() {
        /**
         * Do something after test
         */
    }

    @Test
    public void firstTest(){
        /**
         * Run this test on browserstack which will attach a session id to browserstack execution.
         * That session Id will be updated with the testRule.
         */
    }

    @Test
    public void failTest(){
        failTest();
    }

    @Rule
    public TestRule testRule = new TestWatcher() {
        @Override
        protected void succeeded(Description description) {
            System.out.println("Test passed: " + description.getMethodName());
        }

        @Override
        protected void failed(Throwable e, Description description) {
            System.out.println("Test failed: " + description.getMethodName());
        }

        @Override
        protected void finished(Description description) {
            try {
                changeSessionIdToTestName(description);
            } catch (IOException e) {
                e.printStackTrace();
            } catch (URISyntaxException e) {
                e.printStackTrace();
            }
        }
    };

    /**
     * This method will update the session id to test
     * name after test execution is finished
     * @param description
     */
    private void changeSessionIdToTestName(Description description) throws IOException, URISyntaxException {
        URI uri = new URI("https://USERNAME:ACCESSKEY@api.browserstack.com/automate/sessions/SESSION_ID.json");
        HttpPut putRequest = new HttpPut(uri);

        ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
        nameValuePairs.add((new BasicNameValuePair("name", description.getMethodName())));
        putRequest.setEntity(new UrlEncodedFormEntity(nameValuePairs));

        HttpClientBuilder.create().build().execute(putRequest);
    }
}