Test Description: The default action of compositionstart event is to launch the appropriate text
composition system. If this event is canceled, the text composition system must not be launched.
Steps:
1) Open Japanese Microsoft IME and select Hiragana input method
2) Click at the above textbox and then type 'a' using keyboard
Test passes if the word "PASS" appears below and nothing is typed to the textbox after following the above steps.