Date picker interaction in Selenium Python - Test Execution Trace

Test Overview

This test opens a web page with a date picker, selects a specific date, and verifies the date is correctly set in the input field.

Test Code - Selenium

Selenium Python

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
import unittest

class DatePickerTest(unittest.TestCase):
    def setUp(self):
        self.driver = webdriver.Chrome()
        self.driver.get('https://example.com/datepicker')

    def test_select_date(self):
        driver = self.driver
        wait = WebDriverWait(driver, 10)

        # Wait for date picker input to be clickable
        date_input = wait.until(EC.element_to_be_clickable((By.ID, 'date-input')))
        date_input.click()

        # Wait for the date picker widget to appear
        date_picker = wait.until(EC.visibility_of_element_located((By.CLASS_NAME, 'ui-datepicker-calendar')))

        # Select the date 15 from the calendar
        date_cell = date_picker.find_element(By.XPATH, ".//a[text()='15']")
        date_cell.click()

        # Verify the input value is set to the expected date string
        expected_date = '06/15/2024'
        actual_date = date_input.get_attribute('value')
        self.assertEqual(actual_date, expected_date, f"Date input value should be {expected_date}")

    def tearDown(self):
        self.driver.quit()

if __name__ == '__main__':
    unittest.main()

Execution Trace - 7 Steps

Step	Action	System State	Assertion	Result
1	Test starts and Chrome browser opens	Browser window is open, navigated to 'https://example.com/datepicker' page	—	PASS
2	Waits until date picker input with ID 'date-input' is clickable	Date input field is visible and ready for interaction	—	PASS
3	Clicks on the date picker input field to open the calendar widget	Date picker calendar widget appears on the page	—	PASS
4	Waits until the calendar widget with class 'ui-datepicker-calendar' is visible	Calendar widget is fully loaded and visible	—	PASS
5	Finds the date cell with text '15' inside the calendar and clicks it	Date '15' is selected in the calendar	—	PASS
6	Reads the value attribute of the date input field	Date input field shows the selected date string	Check if input value equals '06/15/2024'	PASS
7	Test ends and browser closes	Browser window is closed	—	PASS

Failure Scenario

Failing Condition: Date cell with text '15' is not found or not clickable

Execution Trace Quiz - 3 Questions

What does the test do after clicking the date input field?

A Closes the browser

B Immediately reads the input value

C Waits for the calendar widget to appear

D Clicks the submit button

Key Result

Always wait explicitly for elements to be ready before interacting, especially with dynamic widgets like date pickers, to avoid flaky tests.

Practice

1. What is the primary purpose of interacting with a date picker in Selenium tests?

easy

A. To test if the date picker changes color when clicked

B. To check if the date picker is visible on the page only

C. To select a date and verify it appears correctly in the input field

D. To verify the page title changes after selecting a date

Solution

1. Step 1: Understand date picker role

   Date pickers let users pick a date easily and show it in an input field.

2. Step 2: Verify date selection in tests

   Tests should select a date and check if the input field shows the chosen date correctly.

3. Final Answer:

   To select a date and verify it appears correctly in the input field -> Option C

4. Quick Check:

   Date picker test = select and verify date [OK]

Hint: Pick date, then check input value matches [OK]

Common Mistakes:

• Only checking visibility without selecting date
• Ignoring input field verification
• Testing unrelated UI changes like color
• Assuming page title changes after date pick

2. Which Selenium Python code snippet correctly clicks a date picker input and selects a date with locator by ID 'dateInput'?

easy

A. driver.find_element(By.ID, 'dateInput').send_keys('15')

B. driver.find_element(By.CLASS_NAME, 'dateInput').click()
driver.find_element(By.ID, '15').click()

C. driver.find_element(By.CSS_SELECTOR, '#dateInput').select('15')

D. driver.find_element(By.ID, 'dateInput').click()
driver.find_element(By.XPATH, "//td[text()='15']").click()

Solution

1. Step 1: Click date picker input by ID

   Use By.ID with 'dateInput' to click the input field correctly.

2. Step 2: Select date by visible text

   Use XPath to find the table cell with text '15' and click it to select the date.

3. Final Answer:

   driver.find_element(By.ID, 'dateInput').click()\ndriver.find_element(By.XPATH, "//td[text()='15']").click() -> Option D

4. Quick Check:

   Correct locators and click actions = driver.find_element(By.ID, 'dateInput').click() driver.find_element(By.XPATH, "//td[text()='15']").click() [OK]

Hint: Use By.ID for input, XPath for date cell text [OK]

Common Mistakes:

• Using CLASS_NAME instead of ID for input
• Trying to send_keys directly to date cell
• Using non-existent select() method
• Wrong locator for date cell

3. What will be the output of this Selenium Python code snippet if the date picker input initially is empty and user selects date '10'?

driver.find_element(By.ID, 'dateInput').click()
driver.find_element(By.XPATH, "//td[text()='10']").click()
selected_date = driver.find_element(By.ID, 'dateInput').get_attribute('value')
print(selected_date)

medium

A. 2024-10-10

B. 10

C. Empty string

D. None

Solution

1. Step 1: Click input and select date '10'

   The code clicks the input and selects the date cell with text '10'.

2. Step 2: Get input value attribute

   After selection, the input's value attribute usually holds the full date string, e.g., '2024-10-10'.

3. Final Answer:

   2024-10-10 -> Option A

4. Quick Check:

   Input value after date pick = full date string [OK]

Hint: Date pickers set full date string in input value [OK]

Common Mistakes:

• Expecting only day number as input value
• Assuming input remains empty
• Confusing None with empty string
• Not retrieving 'value' attribute

4. Given this Selenium Python code snippet, what is the main error preventing date selection?

date_input = driver.find_element(By.ID, 'dateInput')
date_input.click()
driver.find_element(By.XPATH, "//td[text()='25']").send_keys(Keys.ENTER)

medium

A. Using send_keys(Keys.ENTER) on a non-input element

B. Missing import for Keys

C. Wrong locator for date input

D. Not waiting for date picker to open

Solution

1. Step 1: Identify element receiving send_keys

   The code sends ENTER key to a table cell (td), which is not an input field.

2. Step 2: Understand send_keys usage

   send_keys works on input or editable elements, not on static table cells; clicking is needed instead.

3. Final Answer:

   Using send_keys(Keys.ENTER) on a non-input element -> Option A

4. Quick Check:

   send_keys on non-input element causes failure [OK]

Hint: Click date cell, don't send_keys to it [OK]

Common Mistakes:

• Trying to send_keys to non-input elements
• Forgetting to import Keys
• Assuming locator is wrong without checking
• Ignoring wait for picker visibility

5. You want to write a Selenium Python test that selects the date '1' of next month in a date picker. The date picker shows current month by default and has a 'Next' button with ID 'nextMonthBtn'. Which sequence correctly selects the date?

hard

A. driver.find_element(By.XPATH, "//td[text()='1']").click()
driver.find_element(By.ID, 'nextMonthBtn').click()

B. driver.find_element(By.ID, 'nextMonthBtn').click()
driver.find_element(By.XPATH, "//td[text()='1']").click()

C. driver.find_element(By.ID, 'dateInput').send_keys('1')

D. driver.find_element(By.ID, 'nextMonthBtn').send_keys(Keys.ENTER)
driver.find_element(By.XPATH, "//td[text()='1']").click()

Solution

1. Step 1: Click 'Next' button to go to next month

   Click the button with ID 'nextMonthBtn' to change the calendar to next month.

2. Step 2: Click date '1' in the updated calendar

   After calendar updates, click the table cell with text '1' to select the date.

3. Final Answer:

   driver.find_element(By.ID, 'nextMonthBtn').click()\ndriver.find_element(By.XPATH, "//td[text()='1']").click() -> Option B

4. Quick Check:

   Navigate then select date = driver.find_element(By.ID, 'nextMonthBtn').click() driver.find_element(By.XPATH, "//td[text()='1']").click() [OK]

Hint: Click next month first, then pick date [OK]

Common Mistakes:

• Selecting date before navigating to next month
• Using send_keys instead of click on buttons
• Ignoring calendar update after clicking next
• Wrong order of actions