Demonstration on how Robot Framework activates the Caps Lock key

Currently, I am utilizing the Robot Framework selenium2library to automate a Chromium Embedded application. One of the requirements is to verify whether a tooltip appears on the window when the Caps Lock key is activated.

Activate Key   #element_id   \\\20             

The code snippet above is intended to simulate pressing the caps lock key by sending the ASCII code 20. However, this command does not seem to be functioning properly. Interestingly, similar syntax for simulating the Enter key (ASCII value 13) and Tab key (ASCII value 09) has proven successful:

Activate Key   #element_id   \\\13     
Activate Key   <!--element_id--->   \\\09     

If anyone could provide assistance in achieving the emulation of the Caps Lock key press within the Robot Framework, it would be greatly appreciated.

Answer №1

Simply put, the support for pressing the Caps Lock key in Selenium is not available. Only certain non-letter keys specified in the Selenium module can be used. If you refer to the Webdriver/Common/Keys.py, you will find a list of supported keys such as 'tab' and 'enter', but not 'Caps Lock'.

Upon searching the SeleniumHQ issue page, only one mention was found regarding this limitation: Please add the function of sending "CAPSLOCK" in webdriver. This can be seen in issue #785. The response stated that it is out of scope, noting that some computers may not even have a physical Caps Lock key.

This doesn't mean it's impossible to execute this action, just that Selenium and its derivative libraries do not provide direct support for it. To press the Caps Lock key during a test session, an OS-specific Python module must be utilized. For Windows systems, the Microsoft SendKeys functionality can be leveraged. More information on implementing this workaround for both Windows and Linux can be found in this Stack Overflow answer.

Answer №2

Appreciation to all who sought a resolution to the issue.

I managed to discover a functional solution by utilizing the ImageHorizonLibrary found at:

https://github.com/Eficode/robotframework-imagehorizonlibrary https://github.com/Eficode/robotframework-imagehorizonlibrary/blob/master/tests/atest/windows_tests.robot

Here is my successful code implementation using the aforementioned library:

Library           ImageHorizonLibrary

*** Keywords ***  
CheckCapsLockOnNotification  
    Press Key    ${UsernameTextElement}    \\09   #For Tab key  
    Type    Key.CAPSLOCK                          #For CapsLock Key  
    Type    pass                                  #Typing keyboard letters  
    Page Should Contain Element    ${CapsLockOnTooltipElement}  
    Clear Element Text    ${PasswordTextElement}  
    Type    Key.CAPSLOCK

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