QA:Testcase i18n ibus input

Description

This test-case is to check that input works correctly for your ibus input-method.

How to test

1. Select System -> Preferences -> Input Method.
   1. Check Enable input method feature, then click Input Method Preferences.
   2. Open Input Method column in the Ibus Preferences window, Then click Select Input Method to choose a language.
   3. Click add button and Close.
2. Open a test editor, left click Ibus input method framework icon in the panel to select the input method. some texts to test the input-method such as the following:
   1. Switch it on/off (the default keyboard shortcuts for enable/disable is: Ctrl+Space.)
   2. Focus out/in (move the mouse off the editor and back).
   3. Click any icon in the language bar(which should be popped up when using input method) and change the certain mode, see if it works.
   4. Add/Delete input method in preferences and verify it.

Expected Results

1. Input should be displayed as expected.
2. Any change should take effect.