Describe commands.vim

  It should toggle off and on
    execute 'AirlineToggle'
    Assert False(exists('#airline'))
    execute 'AirlineToggle'
    Assert True(exists('#airline'))
  End

  It should toggle whitespace off
    call airline#extensions#load()
    execute 'AirlineToggleWhitespace'
    Assert False(exists('#airline_whitespace'))
  End

  It should toggle whitespace on
    call airline#extensions#load()
    execute 'AirlineToggleWhitespace'
    Assert True(exists('#airline_whitespace'))
  End

  It should display theme name "simple"
    execute 'AirlineTheme simple'
    Assert Equals(g:airline_theme, 'simple')
  End

  It should display theme name "dark"'
    execute 'AirlineTheme dark'
    Assert Equals(g:airline_theme, 'dark')
  End

  It should display theme name "dark" because specifying a name that does not exist
    execute 'AirlineTheme doesnotexist'
    Assert Equals(g:airline_theme, 'dark')
  End

  It should display theme name molokai
    colors molokai
    Assert Equals(g:airline_theme, 'molokai')
  End

  It should have a refresh command
    Assert Equals(exists(':AirlineRefresh'), 2)
  End

  It should have a extensions command
    Assert Equals(exists(':AirlineExtensions'), 2)
  End

End