How to get pagination count in Selenium Webdriver

 To count number of search yoy will need 2 lists one to store pages and one to store product elements. 

Steps for below code:

1. Enter Search Query
2. Click on Search Button
3. Iterate through pages and count number of products.
4. Assert number of result count matched with search result heading.

How to handle pagination in selenium

package com.seleniumtest;

import java.util.List;

import org.openqa.selenium.By;
import org.openqa.selenium.Keys;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.chrome.ChromeOptions;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;
import org.testng.Assert;
import org.testng.annotations.Test;

public class pagination {

	@Test
	public void productCount() throws InterruptedException
	{

		ChromeOptions options = new ChromeOptions();
		options.addArguments("start-maximized");
				
	    System.setProperty("webdriver.chrome.driver", "C:\\Users\\goswa\\eclipse-workspace\\seleniumtest\\exe\\chromedriver.exe");
	    
	    WebDriver driver = new ChromeDriver();
	    driver.get("https://www.flipkart.com/");
	    
	    driver.manage().window().maximize();
	    
	    //Escape Pop up
	    driver.findElement(By.cssSelector("button[class='_2AkmmA _29YdH8']")).click();
	  
	    //Search Query
	    String searchString = "iphone 7";
	    
	    //Enter Search Query in Search Textbox
	    driver.findElement(By.className("LM6RPg")).sendKeys(searchString);
	    
	    //Click on Search Button
	    driver.findElement(By.className("LM6RPg")).sendKeys(Keys.ENTER);
	    
	    //start product count from 0
	    int productCount = 0;
	    
	    //list to store page numbers
	    List<WebElement> elements;
	    
	    //Count no of pagination link
	    new WebDriverWait(
	            driver, 20).until(
	                    ExpectedConditions.presenceOfElementLocated(
	                            By.xpath("//nav[@class='_1ypTlJ']/a")));
	
	    elements = driver.findElements(By.xpath("//nav[@class='_1ypTlJ']/a"));
	
	//Iterate through list
	for (int i = 0; i < elements.size()-1; i++) {
	 
	        elements.get(i).sendKeys(Keys.ENTER);
	        Thread.sleep(3000);
	        
	        //Store product element
	        List<WebElement> productElement = driver.findElements(By.xpath("//div[@class='_3wU53n']"));
	    	
	        //Add List size to existing pages product count
	        productCount = productCount + productElement.size();
	      
	    }
	
	   String actualResult = driver.findElement(By.cssSelector("span[class='_2yAnYN']")).getText();
	   int currentCount = 24 * (elements.size()-2) + 1;
	   String expectedResult = "Showing "  + currentCount + " – " + productCount + " of " + productCount + " results for \"" + searchString +"\"";  
	   
	    Assert.assertTrue(actualResult.equals(expectedResult));
	
	}
}