Verify that Caps Lock key works properly with Pinyin input method, (i.e. if Caps Lock is pressed, input should be swithced to lowercase latin letters). This test is for OS X only. For other platforms please simply press "Pass". 1. Go to "System Preferences -> Keyboard -> Input Sources" and add "Pinyin – Traditional" or "Pinyin – Simplified" IM from Chinese language group. 2. Set current IM to "Pinyin". 3. Set focus to the text field of the test and press Caps Lock key on the keyboard. 4. Press "a" character on the keyboard 5. If "a" character is displayed in the text field, press "Pass", if "A" character is displayed, press "Fail".