Utilities with Selenium

import org.testng.annotations.*;
import org.openqa.selenium.*;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.chrome.ChromeOptions;
import java.util.Map;
import org.openqa.selenium.support.ui.*;
import java.time.Duration;
import static org.openqa.selenium.support.ui.ExpectedConditions.*;

// Locators in this suite: By.id ×3 · By.name ×3 · By.linkText ×2 · By.xpath ×5 · By.cssSelector ×1 · data-testid ×9
public class PowerGridBillTest {
  static final String BASE = "https://www.practiceqaautomation.com";
  WebDriver driver;
  WebDriverWait wait;

  // Small helpers: every action takes a By and waits for its element first (no Thread.sleep).
  By tid(String id) { return By.cssSelector("[data-testid='" + id + "']"); }
  WebElement ready(By by) { return centre(wait.until(elementToBeClickable(by))); }
  void click(By by) { ready(by).click(); }
  WebElement nth(String id, int n) { return centre(wait.until(numberOfElementsToBeMoreThan(tid(id), n)).get(n)); }
  void clickNth(String id, int n) { nth(id, n).click(); }
  // Scroll to the middle of the screen first: Selenium only scrolls an element to the edge,
  // where a sticky header or a fixed bottom bar can cover it (ElementClickInterceptedException).
  WebElement centre(WebElement e) {
    ((JavascriptExecutor) driver).executeScript("arguments[0].scrollIntoView({block: 'center', inline: 'nearest'})", e);
    return e;
  }
  void type(By by, String text) { ready(by).sendKeys(text); }
  void select(By by, String value) { new Select(ready(by)).selectByValue(value); }
  void check(By by) { WebElement e = ready(by); if (!e.isSelected()) e.click(); }
  void expectText(By by, String text) { wait.until(textToBePresentInElementLocated(by, text)); }
  void expectVisible(By by) { wait.until(visibilityOfElementLocated(by)); }
  void expectNthText(String id, int n, String text) {
    wait.until(d -> d.findElements(tid(id)).size() > n && d.findElements(tid(id)).get(n).getText().contains(text));
  }

  @BeforeMethod
  public void setUp() {
    ChromeOptions options = new ChromeOptions();
    // Turn off Chrome's "Save password?" and "password found in a data breach" pop-ups: after a
    // login they take the keyboard and mouse away from the page, so later typing and clicks are lost.
    options.setExperimentalOption("prefs", Map.of(
        "credentials_enable_service", false,
        "profile.password_manager_enabled", false,
        "profile.password_manager_leak_detection", false));
    driver = new ChromeDriver(options);
    wait = new WebDriverWait(driver, Duration.ofSeconds(10));
  }

  @AfterMethod(alwaysRun = true)
  public void tearDown() { driver.quit(); }

  @Test
  public void submitsAReadingSetsAutopayAndPays() {
    driver.get(BASE + "/apps/utilities");
    type(By.id("consumer-number"), "1234567890");
    click(By.xpath("//button[normalize-space()='Send OTP']"));
    expectVisible(tid("otp-sent"));
    expectText(tid("resend-otp"), "Resend OTP in");
    type(By.name("utility-otp"), "111222");
    click(By.xpath("//button[normalize-space()='Verify & sign in']"));
    wait.until(urlContains("/apps/utilities/dashboard"));
    type(By.id("new-reading"), "4870");
    click(By.xpath("//button[normalize-space()='Calculate bill']"));
    expectText(tid("units-consumed"), "350 kWh");
    expectText(tid("estimated-bill"), "₹1,725.00");
    expectText(tid("amount-due"), "₹1,725.00");
    click(By.cssSelector("[aria-label='Autopay']"));
    select(By.name("mandate-bank"), "TrustBank");
    type(By.id("mandate-max"), "3000");
    click(By.xpath("//button[normalize-space()='Authorise']"));
    expectText(tid("autopay-status"), "Active via TrustBank");
    click(By.linkText("Pay now"));
    click(tid("pay-full"));
    select(By.name("utility-method"), "upi");
    click(By.xpath("//button[normalize-space()='Pay']"));
    expectText(tid("paid-amount"), "₹1,725.00");
    click(By.linkText("Back to dashboard"));
    expectText(tid("bill-status"), "Paid");
  }
}