Most common functions used in WebDriver to make a web-application testing

    1.    IsElementPresent/Text Present

1.    Finding elements by using function that take argument of By classprivate boolean isElementPresent(WebDriver driver, By by)

   try{

      driver.findElement(by);

      return true;

       }

catch(Exception e)

{

return false;

}

}

2.    Using the size to decide whether element is there or not

if(driver.findElements(Locator).size()>0

{

return true

}else

{

return false

}

}

3.    Finding the text using the PageSource

driver.PageSource.Contains("TEXT that you want to see on the page");

4.    Finding WebElement  by using various locators

1.    Using ID  WebElement welement = driver.findElement(By.id("Id from webpage"));
2.   Using Name  WebElement welement = driver.findElement(By.name("Name of WebElement"));
3.    Using Tag Name  WebElement welement = driver.findElement(By.tagName("tag name"));
4.    Using Xpath  WebElement welement = driver.findElement(By.xpath("xpath of  webElement"));
5.    Using CSS  WebElement welement = driver.findElement(By.CSS("CSS locator path"));
6.    Using LinkText  WebElement welement = driver.findElement(By.LinkText("LinkText"));

      5.    Fetching pop-up message 

      this is the function that would help you in fetching the message

public static String getPopupMessage(final WebDriver driver) {

String message = null;

try {

Alert alert = driver.switchTo().alert();

message = alert.getText();

alert.accept();

} catch (Exception e) {

message = null;

}

System.out.println("message"+message);

return message;

}

6.    Canceling pop-up

public static String cancelPopupMessageBox(final WebDriver driver) {

String message = null;

try {

Alert alert = driver.switchTo().alert();

message = alert.getText();

alert.dismiss();

} catch (Exception e) {

message = null;

}

return message;

}

7.    Inserting string in Text Field

public static void insertText(WebDriver driver, By locator, String value) {

WebElement field = driver.findElement(locator);

field.clear();

field.sendKeys(value);

}

8.    Reading ToolTip text

public static String tooltipText(WebDriver driver, By locator){

String tooltip = driver.findElement(locator).getAttribute("title");

return tooltip;

}

9.    Selecting Radio Button

public static void selectRadioButton(WebDriver driver, By locator, String value){ List select = driver.findElements(locator);

for (WebElement element : select)

{

if (element.getAttribute("value").equalsIgnoreCase(value)){

element.click();

}

}

10.     Selecting CheckBox

public static void selectCheckboxes(WebDriver driver, By locator,String value)

{

List abc = driver.findElements(locator);

List list = new ArrayListArrays.asList(value.split(",")));

for (String check : list){

for (WebElement chk : abc){

if(chk.getAttribute("value").equalsIgnoreCase(check)){

chk.click();

}}}}

11.    Selecting Dropdown
public static void selectDropdown(WebDriver driver, By locator, String value){

new Select (driver.findElement(locator)).selectByVisibleText(value); }

12.  Selecting searched dropdown

public static void selectSearchDropdown(WebDriver driver, By locator, String value){

driver.findElement(locator).click();

driver.findElement(locator).sendKeys(value);

driver.findElement(locator).sendKeys(Keys.TAB);

}

13.  Uploading file
public static void uploadFile(WebDriver driver, By locator, String path){

driver.findElement(locator).sendKeys(path);

}

14.  Downloading file
Here we will click on a link and will download the file with a predefined name at some specified location.
public static void downloadFile(String href, String fileName) throws Exception{

URL url = null;

URLConnection con = null;

int i;

url = new URL(href);

con = url.openConnection();

// Here we are specifying the location where we really want to save the file.

File file = new File(".//OutputData//" + fileName);

BufferedInputStream bis = new BufferedInputStream(con.getInputStream());

BufferedOutputStream bos = new BufferedOutputStream(

new FileOutputStream(file));

while ((i = bis.read()) != -1) {

bos.write(i);

}

bos.flush();

bis.close();

15.  Wait()

1.    Implicit Wait :
driver.manage.timeouts().implicitlyWait(10,TimeUnit.SECONDS);

2.    Explicit Wait:WebDriverWait wait = new WebDriverWait(driver,10);

wait.until(ExpectedConditons.elementToBeClickable(By.id/xpath/name("locator"));

3.     Using Sleep method of java
Thread.sleep(time in milisecond)

16.  Navigation method of WebDriver Interface

1.    to() method (its a alternative of get() method)
driver.navigate().to(Url);
This will open the URL that you have inserted as argument

2.    back() – use to navigate one step back from current position in recent history syntax == driver.navigate().back();

3.    forward() – use to navigate one step forward in browser historydriver.navigate().forward();

4.    refresh() – This will refresh you current open urldriver.navigate().refresh();

17.  Deleting all Cookies before doing any kind of action  driver.manage().deleteAllCookies();
This will delete all cookies

18.  Pressing any Keyboard key using Action builder class of WebDriver
WebDriver has rewarded us with one class Action to handle all keyboard and Mouse action. While creating a action builder its constructor takes WebDriver as argument. Here I am taking example of pressing Control key
Actions builder = new Actions(driver); builder.keyDown(Keys.CONTROL).click(someElement).click(someOtherElement).keyUp(Keys.CONTROL).build().perform();When we press multiple keys or action together then we need to bind all in a single command by using build() method and perform() method intend us to perform the action.
In the same way you can handle other key actions.