Module 17 Exercise - Combo Chart Validation

Hi Ashish,

I am trying to do the Combo Chart Exercise (No.10) and not able to proceed further as I am not able to extract any kind of data from the chart. So far, i was able to know the frame in which the Chart is available and switch to that frame. I have tried different options through Google Search and found this link in one of the forum posts but that couldn't help me either:
http://stackoverflow.com/questions/14199479/selenium-webdriver-validate-a-value-in-tooltip-for-a-section-bar-of-a-bar-ch

Could you please guide to solve this exercise. My Code so far is below. On execution, error saying that - "chart" is not defined. I understand we should define the chart before using but how do we define the chart when it is already defined in the code of the chart on the web page and it is in Javascript.

package exercises;

import java.util.List;
import java.util.concurrent.TimeUnit;

import org.openqa.selenium.By;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;

public class BarGraph {

public static void main(String[] args) throws Exception {

WebDriver driver = new FirefoxDriver();
driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
driver.manage().window().maximize();
driver.navigate().to("https://developers.google.com/chart/interactive/docs/gallery/combochart");

/*
//Frame is a window embedded inside a page
int size = driver.findElements(By.tagName("iframe")).size();
System.out.println(size);

for(int i=0;i<size;i++){
driver.switchTo().frame(i);
int elementSize = driver.findElements(By.xpath("//*[@id='chart_div']")).size();
System.out.println(elementSize);
//prints 1 if the element is found on the frame, otherwise 0
driver.switchTo().defaultContent(); //Come out of frame. Main page
}
*/

Thread.sleep(3000);

driver.switchTo().frame(0);
System.out.println("Switched to Required Chart Frame");

//Xpath of the rectangle bars
//*[@id='chart_div']/div/div[1]/div/svg/g[3]/g[1]/g[2]/g[1]/rect[1]
//*[@id='chart_div']/div/div[1]/div/svg/g[3]/g[1]/g[2]/g[1]/rect[1]
//*[@id='chart_div']/div/div[1]/div/svg/g[3]/g[1]/g[2]/g[1]/rect[1]
//*[@id='chart_div']/div/div[1]/div/svg/g[3]/g[1]/g[2]/g[1]/rect[1]

JavascriptExecutor js = (JavascriptExecutor)driver;
int[] data = js.executeScript("return chart.series.data;");;

for(int i=0;i<data.length;i++)
System.out.println(data[i]);




}

}