Selenium - PhantomJS

31 Mar 2014

PhantomJS is a headless WebKit. It is good when running tests on a headless machine or when the tests need to be executed really fast. In this example we will run Selenium WebDriver on PhantomJS.

Install PhantomJS

On Arch Linux

$ pacman -S phantomjs

On Debian Linux in the unstable packages

$ apt-get install phantomjs

For more information on installing PhantomJS refer to the download page.

Maven

We need the following maven dependencies.

<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.11</version>
    <scope>test</scope>
</dependency>
<dependency>
    <groupId>com.github.detro.ghostdriver</groupId>
    <artifactId>phantomjsdriver</artifactId>
    <version>1.1.0</version>
</dependency>
<dependency>
    <groupId>org.seleniumhq.selenium</groupId>
    <artifactId>selenium-java</artifactId>
    <version>2.41.0</version>
</dependency>

Test Case

Finally we can write a test case that does a google search for cheese and 42.

To improve performance we run PhantomJS in the background so we don't have to start and stop PhantomJS around each test.

public class CheeseTest {
    
    private static PhantomJSDriverService PHANTOMJS_SERVICE;
    private WebDriver driver;
    
    @BeforeClass
    public static void before() throws IOException{
        PHANTOMJS_SERVICE = PhantomJSDriverService.createDefaultService();
        PHANTOMJS_SERVICE.start();
    }
    
    @AfterClass
    public static void cleanUp(){
        PHANTOMJS_SERVICE.stop();
    }

    @Before
    public void setUp() throws Exception {
        driver = new PhantomJSDriver(PHANTOMJS_SERVICE, DesiredCapabilities.phantomjs());
        driver.manage().timeouts().implicitlyWait(5, TimeUnit.SECONDS);
    }

    @After
    public void tearDown() throws Exception {
        driver.quit();
    }

    @Test
    public void testCheese() {
        query("cheese");
    }
    
    @Test
    public void test42() {
        query("42");
    }
    
    private void query(String query) {
        driver.get("https://www.google.com");
        driver.findElement(By.name("q")).sendKeys(query);
        driver.findElement(By.name("btnG")).click();
        (new WebDriverWait(driver, 10)).until(ExpectedConditions
                .titleContains(query));
    }
}

The full project can be found on github.

Jason Gowan