New window and tab creation in Selenium Python - Framework Patterns

Framework Mode - New window and tab creation

Folder Structure

selenium_project/
├── src/
│   ├── pages/
│   │   ├── base_page.py
│   │   ├── home_page.py
│   │   └── new_window_page.py
│   ├── tests/
│   │   ├── test_new_window.py
│   │   └── test_home.py
│   ├── utils/
│   │   ├── driver_factory.py
│   │   └── window_manager.py
│   └── config/
│       ├── config.yaml
│       └── credentials.yaml
├── requirements.txt
└── pytest.ini

Test Framework Layers

• Driver Layer: driver_factory.py creates and manages WebDriver instances with options for different browsers.
• Page Objects: Classes in pages/ represent web pages. For new window/tab tests, new_window_page.py handles window switching methods.
• Tests: Test scripts in tests/ use page objects and utilities to perform actions and assertions, e.g., test_new_window.py tests new window/tab creation and switching.
• Utilities: Helper functions like window_manager.py provide reusable methods to switch windows or tabs safely.
• Configuration: config/ holds environment settings and credentials, loaded dynamically for flexible test runs.

Configuration Patterns

• Environment Settings: Use config.yaml to define URLs, browser types, and timeouts for different environments (dev, staging, prod).
• Browser Selection: Pass browser choice via command line or config file; driver_factory.py initializes the correct WebDriver.
• Credentials: Store sensitive data in credentials.yaml and load securely in tests.
• Window/Tab Handling: Utilities handle window handles and switching logic to avoid flaky tests.

Test Reporting and CI/CD Integration

• Use pytest with plugins like pytest-html for clear HTML reports showing pass/fail and screenshots on failure.
• Integrate with CI tools (GitHub Actions, Jenkins) to run tests on each commit or pull request.
• Configure reports to be archived or sent via email for team visibility.
• Include logs of window/tab switching steps to help debug failures related to new windows or tabs.

Best Practices

1. Use Page Object Model: Encapsulate window/tab actions in page classes to keep tests clean and maintainable.
2. Explicit Waits: Always wait for new windows or tabs to appear before switching to avoid timing issues.
3. Window Handle Management: Store and switch window handles carefully to return to the original window after tests.
4. Isolate Tests: Each test should open and close windows/tabs independently to avoid side effects.
5. Clear Naming: Name window handles or tabs logically in utilities for easier debugging and readability.

Self Check

Where in this folder structure would you add a new utility function to safely switch back to the original browser tab after opening a new tab?

Key Result

Organize Selenium Python tests with clear layers: driver setup, page objects for window/tab actions, utilities for window management, and config for environments.

Practice

1. Which Selenium Python command opens a new browser tab?

easy

A. driver.switch_to.new_window('tab')

B. driver.open_new_tab()

C. driver.create_tab()

D. driver.new_tab()

Solution

1. Step 1: Understand Selenium's new window method

   Selenium provides driver.switch_to.new_window() to open new tabs or windows by specifying the type as 'tab' or 'window'.

2. Step 2: Identify the correct argument for a new tab

   To open a new tab, the argument must be the string 'tab'. So the correct command is driver.switch_to.new_window('tab').

3. Final Answer:

   driver.switch_to.new_window('tab') -> Option A

4. Quick Check:

   Open new tab = driver.switch_to.new_window('tab') [OK]

Hint: Use 'tab' string inside new_window() to open a new tab [OK]

Common Mistakes:

• Using non-existent methods like driver.open_new_tab()
• Passing 'window' instead of 'tab' to open a tab
• Trying driver.new_tab() which is invalid

2. Which of the following is the correct syntax to open a new browser window in Selenium Python?

easy

A. driver.switch_to.new_window('tab')

B. driver.switch_to.new_window('window')

C. driver.new_window('window')

D. driver.open_window('window')

Solution

1. Step 1: Recall the method to open new windows

   Selenium's correct method is driver.switch_to.new_window() with argument 'window' to open a new window.

2. Step 2: Check syntax correctness

   Only driver.switch_to.new_window('window') uses the correct method and argument. driver.new_window('window') and driver.open_window('window') use invalid method names, and driver.switch_to.new_window('tab') opens a tab, not a window.

3. Final Answer:

   driver.switch_to.new_window('window') -> Option B

4. Quick Check:

   Open new window = driver.switch_to.new_window('window') [OK]

Hint: Use 'window' string inside new_window() to open a new window [OK]

Common Mistakes:

• Confusing 'tab' and 'window' arguments
• Using wrong method names like driver.new_window()
• Missing the switch_to part in the command

3. What will be the output of the following Selenium Python code snippet?

driver.get('https://example.com')
original_handle = driver.current_window_handle
driver.switch_to.new_window('tab')
driver.get('https://selenium.dev')
print(len(driver.window_handles))

medium

A. 2

B. 1

C. 0

D. Error

Solution

1. Step 1: Analyze window handles before and after new tab

   Initially, the driver opens one window (example.com). After driver.switch_to.new_window('tab'), a new tab opens, so total windows/tabs become 2.

2. Step 2: Count window handles

   The driver.window_handles list contains all open windows/tabs. After opening the new tab, its length is 2.

3. Final Answer:

   2 -> Option A

4. Quick Check:

   New tab adds one handle, total handles = 2 [OK]

Hint: Count window_handles after new_window() to get total tabs/windows [OK]

Common Mistakes:

• Assuming window_handles length stays 1 after new tab
• Confusing current_window_handle with window_handles list
• Expecting an error due to missing switch focus

4. Identify the error in this Selenium Python code that tries to open a new tab:

driver.get('https://example.com')
driver.new_window('tab')
driver.get('https://selenium.dev')

medium

A. driver.new_window() is not a valid method

B. Cannot open new tab after driver.get()

C. Missing driver.switch_to before new_window()

D. driver.get() cannot be called twice

Solution

1. Step 1: Check method usage for opening new tab

   The correct method to open a new tab is driver.switch_to.new_window('tab'). The code misses switch_to.

2. Step 2: Understand why missing switch_to causes error

   Calling driver.new_window('tab') directly is invalid and will raise an AttributeError.

3. Final Answer:

   Missing driver.switch_to before new_window() -> Option C

4. Quick Check:

   Use driver.switch_to.new_window() to open tabs/windows [OK]

Hint: Always use driver.switch_to.new_window() to open tabs/windows [OK]

Common Mistakes:

• Calling new_window() directly on driver
• Thinking driver.get() limits opening new tabs
• Believing driver.get() can only be called once

5. You want to open a new tab, switch to it, load a URL, then switch back to the original tab. Which code snippet correctly does this in Selenium Python?

hard

A. original = driver.current_window_handle
driver.switch_to.new_window('tab')
driver.switch_to.window(original)
driver.get('https://selenium.dev')

B. driver.new_window('tab')
driver.get('https://selenium.dev')
driver.switch_to.window(original)

C. original = driver.current_window_handle
driver.switch_to.new_window('window')
driver.get('https://selenium.dev')
driver.switch_to.window(original)

D. original = driver.current_window_handle
driver.switch_to.new_window('tab')
driver.get('https://selenium.dev')
driver.switch_to.window(original)

Solution

1. Step 1: Save original window handle before opening new tab

   Store driver.current_window_handle in a variable to switch back later.

2. Step 2: Open new tab and load URL

   Use driver.switch_to.new_window('tab') to open a new tab, then load the URL with driver.get().

3. Step 3: Switch back to original tab

   Use driver.switch_to.window(original) to return focus to the original tab.

4. Final Answer:

   Code snippet D correctly opens a new tab, loads URL, and switches back -> Option D

5. Quick Check:

   Save handle, open tab, load URL, switch back [OK]

Hint: Save handle, open tab, load URL, then switch back [OK]

Common Mistakes:

• Not saving original window handle before opening new tab
• Using 'window' instead of 'tab' when a tab is needed
• Switching back to original tab before loading the URL in the new tab