Date picker strategies in Selenium Java - Test Execution Trace

Test Overview

This test opens a web page with a date picker, selects a specific date using a calendar widget, and verifies the selected date is correctly displayed in the input field.

Test Code

Selenium Java

import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.support.ui.ExpectedConditions;
import org.openqa.selenium.support.ui.WebDriverWait;
import java.time.Duration;
import org.junit.Assert;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

public class DatePickerTest {
    WebDriver driver;
    WebDriverWait wait;

    @Before
    public void setUp() {
        driver = new ChromeDriver();
        wait = new WebDriverWait(driver, Duration.ofSeconds(10));
    }

    @Test
    public void testSelectDate() {
        driver.get("https://example.com/datepicker");

        // Open the date picker widget
        WebElement dateInput = wait.until(ExpectedConditions.elementToBeClickable(By.id("date-input")));
        dateInput.click();

        // Wait for calendar to be visible
        wait.until(ExpectedConditions.visibilityOfElementLocated(By.className("ui-datepicker-calendar")));

        // Select the date 15 from the calendar
        WebElement dateToSelect = driver.findElement(By.xpath("//table[contains(@class,'ui-datepicker-calendar')]//a[text()='15']"));
        dateToSelect.click();

        // Verify the input field has the selected date
        String selectedDate = dateInput.getAttribute("value");
        Assert.assertEquals("15/06/2024", selectedDate);
    }

    @After
    public void tearDown() {
        if (driver != null) {
            driver.quit();
        }
    }
}

Execution Trace - 6 Steps

Step	Action	System State	Assertion	Result
1	Test starts and Chrome browser opens	Browser window is open, ready to navigate	—	PASS
2	Navigates to https://example.com/datepicker	Date picker page loads with input field visible	Page loaded and date input is present	PASS
3	Waits until date input field is clickable and clicks it	Date picker calendar widget appears on screen	Date picker calendar is visible	PASS
4	Finds the date '15' in the calendar and clicks it	Date '15' is selected in the calendar	—	PASS
5	Reads the value from the date input field	Input field shows '15/06/2024'	Assert that input value equals '15/06/2024'	PASS
6	Test ends and browser closes	Browser window is closed	—	PASS

Failure Scenario

Failing Condition: The date '15' is not found or clickable in the calendar widget

Execution Trace Quiz - 3 Questions

What action opens the date picker calendar in the test?

A Refreshing the page

B Clicking the date input field

C Typing the date manually

D Clicking a submit button

Key Result

Always wait explicitly for the date picker calendar to be visible before interacting with date elements to avoid timing issues.

Practice

1. What is the main reason to use a date picker in a web form during testing?

easy

A. To speed up page loading time

B. To allow users to select a date easily and avoid manual input errors

C. To change the website's theme colors

D. To validate user passwords

Solution

1. Step 1: Understand the purpose of a date picker

   A date picker helps users select dates without typing, reducing errors.

2. Step 2: Identify the testing goal

   Testing ensures the date picker works correctly and inputs valid dates.

3. Final Answer:

   To allow users to select a date easily and avoid manual input errors -> Option B

4. Quick Check:

   Date picker purpose = Easy date selection [OK]

Hint: Date pickers help avoid typing mistakes [OK]

Common Mistakes:

• Confusing date picker with unrelated UI elements
• Thinking date picker changes page speed
• Assuming date picker validates passwords

2. Which Selenium Java code snippet correctly clicks a date picker input field using its id 'dateInput'?

easy

A. driver.findElement(By.tagName("dateInput")).click();

B. driver.findElement(By.name("dateInput")).click();

C. driver.findElement(By.className("dateInput")).click();

D. driver.findElement(By.id("dateInput")).click();

Solution

1. Step 1: Identify the locator strategy for id

   Use By.id("dateInput") to find element by its id attribute.

2. Step 2: Use click() method on the found element

   Calling click() simulates user clicking the date picker input.

3. Final Answer:

   driver.findElement(By.id("dateInput")).click(); -> Option D

4. Quick Check:

   Use By.id for id attribute [OK]

Hint: Use By.id for id locators in Selenium [OK]

Common Mistakes:

• Using By.name when id is given
• Using By.className incorrectly
• Using By.tagName with id value

3. Given this Selenium Java code snippet, what will be the output if the date picker input's value is set correctly?

WebElement dateInput = driver.findElement(By.id("dateInput"));
dateInput.click();
dateInput.sendKeys("2024-07-15");
String selectedDate = dateInput.getAttribute("value");
System.out.println(selectedDate);

medium

A. 2024/07/15

B. null

C. 2024-07-15

D. Date picker not found

Solution

1. Step 1: Understand sendKeys sets input value

   sendKeys("2024-07-15") inputs the date string into the field.

2. Step 2: getAttribute("value") retrieves the current input value

   This returns the exact string typed, which is "2024-07-15".

3. Final Answer:

   2024-07-15 -> Option C

4. Quick Check:

   sendKeys sets value, getAttribute reads it [OK]

Hint: sendKeys sets input, getAttribute("value") reads it [OK]

Common Mistakes:

• Expecting formatted date different from input
• Assuming getText() returns input value
• Confusing null with empty string

4. You wrote this Selenium Java code to select a date but the test fails with NoSuchElementException:

driver.findElement(By.xpath("//input[@id='dateInput']")).sendKeys("2024-12-01");

What is the most likely cause and fix?

medium

A. The date picker input is inside an iframe; switch to iframe before accessing it

B. The xpath syntax is incorrect; use By.id instead

C. sendKeys cannot be used on input fields

D. The date format "2024-12-01" is invalid

Solution

1. Step 1: Understand NoSuchElementException means element not found

   This often happens if element is inside an iframe or not visible yet.

2. Step 2: Check if date picker is inside iframe and switch context

   Switching to iframe with driver.switchTo().frame(...) allows access to elements inside it.

3. Final Answer:

   The date picker input is inside an iframe; switch to iframe before accessing it -> Option A

4. Quick Check:

   Switch to iframe to find elements inside [OK]

Hint: Check if element is inside iframe before locating [OK]

Common Mistakes:

• Assuming xpath is always wrong
• Thinking sendKeys can't be used on inputs
• Blaming date format for element not found

5. You want to select a date 10 days from today using Selenium Java on a date picker that only allows clicking days (no typing). Which strategy is best?

hard

A. Calculate the target date, open the date picker, then click the day button matching that date

B. Use sendKeys to type the date string directly into the input field

C. Reload the page and hope the default date is correct

D. Use JavaScript to set the input value without clicking

Solution

1. Step 1: Calculate the date 10 days from today in Java

   Use LocalDate.now().plusDays(10) to get the target date.

2. Step 2: Open the date picker and click the day matching the target date

   Locate the day button by text or attribute and click it to select.

3. Final Answer:

   Calculate the target date, open the date picker, then click the day button matching that date -> Option A

4. Quick Check:

   Click matching day for pickers without typing [OK]

Hint: Click the correct day button after calculating date [OK]

Common Mistakes:

• Trying to type date when input disallows it
• Ignoring date calculation and clicking wrong day
• Using JavaScript to set value without UI interaction