Merge branch 'dev'

Implements #204.

Conflicts:
	README.md

.gitignore

@@ -1 +1,3 @@
 doc/tags
+*.lock
+.vim-flavor

.travis.yml

@@ -0,0 +1,4 @@
+language: ruby
+rvm:
+  - 1.9.3
+script: rake ci

Gemfile

@@ -0,0 +1,2 @@
+source 'https://rubygems.org'
+gem 'vim-flavor', '~> 1.1'

README.md

@@ -14,6 +14,8 @@ Lean & mean statusline for vim that's light as air.
 *  Supports 7.2 as the minimum Vim version.
 *  Stable release cycle; bleeding edge changes happen on the `dev` branch, and after they have gone through a [full regression test][33] will eventually be merged in the stable master branch.  Releases typically occur every 2 weeks.
 
+[![Build Status](https://travis-ci.org/bling/vim-airline.png)](https://travis-ci.org/bling/vim-airline)
+
 ## Straightforward customization
 
 If you don't like the defaults, you can replace all sections with standard `statusline` syntax.  Give your statusline that you've built over the years a face lift.

Rakefile

@@ -0,0 +1,14 @@
+#!/usr/bin/env rake
+
+task :default => [:test]
+
+task :ci => [:dump, :test]
+
+task :dump do
+  sh 'vim --version'
+end
+
+task :test do
+  sh 'bundle exec vim-flavor test'
+end
+

autoload/airline/extensions/branch.vim

@@ -27,10 +27,12 @@ function! airline#extensions#branch#get_head()
     endif
   endif
 
-  return empty(head) ? s:empty_message : s:symbol.' '.head
+  return empty(head)
+        \ ? s:empty_message
+        \ : printf('%s%s', empty(s:symbol) ? '' : s:symbol.' ', head)
 endfunction
 
 function! airline#extensions#branch#init(ext)
-  let g:airline_parts.branch = '%{airline#extensions#branch#get_head()}'
+  call airline#parts#define_function('branch', 'airline#extensions#branch#get_head')
 endfunction
 

autoload/airline/extensions/bufferline.vim

@@ -14,5 +14,6 @@ function! airline#extensions#bufferline#init(ext)
     let g:bufferline_separator = ' '
   endif
 
-  let g:airline_parts.file = '%{bufferline#refresh_status()}'.bufferline#get_status_string()
+  call airline#parts#define_raw('file', '%{bufferline#refresh_status()}'.bufferline#get_status_string())
 endfunction
+

autoload/airline/extensions/example.vim

@@ -11,7 +11,7 @@ function! airline#extensions#example#init(ext)
 
   " Here we define a new part for the plugin.  This allows users to place this
   " extension in arbitrary locations.
-  let g:airline_parts.cats = '%{airline#extensions#example#get_cats()}'
+  call airline#parts#define_raw('cats', '%{airline#extensions#example#get_cats()}')
 
   " Next up we add a funcref so that we can run some code prior to the
   " statusline getting modifed.
@@ -28,7 +28,7 @@ function! airline#extensions#example#apply(...)
     " Let's use a helper function.  It will take care of ensuring that the
     " window-local override exists (and create one based on the global
     " airline_section if not), and prepend to it.
-    call airline#extensions#prepend_to_section('x', g:airline_parts.cats)
+    call airline#extensions#prepend_to_section('x', airline#parts#get('cats').raw)
   endif
 endfunction
 

autoload/airline/extensions/hunks.vim

@@ -54,6 +54,6 @@ function! airline#extensions#hunks#get_hunks()
 endfunction
 
 function! airline#extensions#hunks#init(ext)
-  let g:airline_parts.hunks = '%{airline#extensions#hunks#get_hunks()}'
+  call airline#parts#define_function('hunks', 'airline#extensions#hunks#get_hunks')
 endfunction
 

autoload/airline/extensions/syntastic.vim

@@ -10,6 +10,6 @@ function! airline#extensions#syntastic#get_warnings()
 endfunction
 
 function! airline#extensions#syntastic#init(ext)
-  let g:airline_parts.syntastic = '%{airline#extensions#syntastic#get_warnings()}'
+  call airline#parts#define_function('syntastic', 'airline#extensions#syntastic#get_warnings')
 endfunction
 

autoload/airline/extensions/tagbar.vim

@@ -16,11 +16,17 @@ function! airline#extensions#tagbar#inactive_apply(...)
   endif
 endfunction
 
+function! airline#extensions#tagbar#currenttag()
+  if get(w:, 'airline_active', 0)
+    return tagbar#currenttag('%s', '')
+  endif
+  return ''
+endfunction
+
 function! airline#extensions#tagbar#init(ext)
   call a:ext.add_inactive_statusline_func('airline#extensions#tagbar#inactive_apply')
   let g:tagbar_status_func = 'airline#extensions#tagbar#get_status'
 
-  let g:airline_parts.tagbar = '%(%{get(w:,"airline_active",0) ? tagbar#currenttag("%s","") : ""} '
+  call airline#parts#define_function('tagbar', 'airline#extensions#tagbar#currenttag')
-        \ .g:airline_right_alt_sep.' %)'
 endfunction
 

autoload/airline/extensions/whitespace.vim

@@ -56,6 +56,7 @@ endfunction!
 function! airline#extensions#whitespace#toggle()
   if s:enabled
     autocmd! airline_whitespace CursorHold,BufWritePost
+    augroup! airline_whitespace
     let s:enabled = 0
   else
     call airline#extensions#whitespace#init()
@@ -65,7 +66,7 @@ function! airline#extensions#whitespace#toggle()
 endfunction
 
 function! airline#extensions#whitespace#init(...)
-  let g:airline_parts.whitespace = '%{airline#extensions#whitespace#check()}'
+  call airline#parts#define_function('whitespace', 'airline#extensions#whitespace#check')
 
   unlet! b:airline_whitespace_check
   augroup airline_whitespace

autoload/airline/init.vim

@@ -0,0 +1,94 @@
+" MIT License. Copyright (c) 2013 Bailey Ling.
+" vim: et ts=2 sts=2 sw=2
+
+function! s:check_defined(variable, default)
+  if !exists(a:variable)
+    let {a:variable} = a:default
+  endif
+endfunction
+
+function! airline#init#bootstrap()
+  call s:check_defined('g:airline_left_sep', get(g:, 'airline_powerline_fonts', 0)?"":">")
+  call s:check_defined('g:airline_left_alt_sep', get(g:, 'airline_powerline_fonts', 0)?"":">")
+  call s:check_defined('g:airline_right_sep', get(g:, 'airline_powerline_fonts', 0)?"":"<")
+  call s:check_defined('g:airline_right_alt_sep', get(g:, 'airline_powerline_fonts', 0)?"":"<")
+  call s:check_defined('g:airline_detect_modified', 1)
+  call s:check_defined('g:airline_detect_paste', 1)
+  call s:check_defined('g:airline_detect_iminsert', 0)
+  call s:check_defined('g:airline_inactive_collapse', 1)
+  call s:check_defined('g:airline_exclude_filenames', ['DebuggerWatch','DebuggerStack','DebuggerStatus'])
+  call s:check_defined('g:airline_exclude_filetypes', [])
+  call s:check_defined('g:airline_exclude_preview', 0)
+
+  call s:check_defined('g:airline_mode_map', {})
+  call extend(g:airline_mode_map, {
+        \ '__' : '------',
+        \ 'n'  : 'NORMAL',
+        \ 'i'  : 'INSERT',
+        \ 'R'  : 'REPLACE',
+        \ 'v'  : 'VISUAL',
+        \ 'V'  : 'V-LINE',
+        \ 'c'  : 'COMMAND',
+        \ '' : 'V-BLOCK',
+        \ 's'  : 'SELECT',
+        \ 'S'  : 'S-LINE',
+        \ '' : 'S-BLOCK',
+        \ }, 'keep')
+
+  call s:check_defined('g:airline_theme_map', {})
+  call extend(g:airline_theme_map, {
+        \ 'Tomorrow.*': 'tomorrow',
+        \ 'mo[l|n]okai': 'molokai',
+        \ 'wombat.*': 'wombat',
+        \ '.*solarized.*': 'solarized',
+        \ }, 'keep')
+
+  call s:check_defined('g:airline_symbols', {})
+  call extend(g:airline_symbols, {
+        \ 'paste': get(g:, 'airline_paste_symbol', 'PASTE'),
+        \ 'readonly': get(g:, 'airline_readonly_symbol', get(g:, 'airline_powerline_fonts', 0) ? '' : 'RO'),
+        \ 'whitespace': get(g:, 'airline_powerline_fonts', 0) ? '✹' : '!',
+        \ 'linenr': get(g:, 'airline_linecolumn_prefix', get(g:, 'airline_powerline_fonts', 0) ? '' : ':' ),
+        \ 'branch': get(g:, 'airline_branch_prefix', get(g:, 'airline_powerline_fonts', 0) ? '' : ''),
+        \ }, 'keep')
+
+  call airline#parts#define_function('mode', 'airline#parts#mode')
+  call airline#parts#define_function('iminsert', 'airline#parts#iminsert')
+  call airline#parts#define_function('paste', 'airline#parts#paste')
+  call airline#parts#define('readonly', {
+        \ 'function': 'airline#parts#readonly',
+        \ 'highlight': 'airline_file',
+        \ })
+  call airline#parts#define_raw('file', '%f%m')
+  call airline#parts#define_raw('ffenc', '%{printf("%s%s",&fenc,strlen(&ff)>0?"[".&ff."]":"")}')
+
+  call airline#parts#define_empty(['hunks', 'branch', 'tagbar', 'syntastic'])
+
+  call airline#extensions#load()
+
+  if !exists('g:airline_section_a')
+    let g:airline_section_a = airline#section#create_left(['mode', 'paste', 'iminsert'])
+  endif
+  if !exists('g:airline_section_b')
+    let g:airline_section_b = airline#section#create(['hunks', 'branch'])
+  endif
+  if !exists('g:airline_section_c')
+    let g:airline_section_c = airline#section#create(['%<', 'file'])
+  endif
+  if !exists('g:airline_section_gutter')
+    let g:airline_section_gutter = airline#section#create([' ', 'readonly', '%='])
+  endif
+  if !exists('g:airline_section_x')
+    let g:airline_section_x = airline#section#create_right(['tagbar', '%{&filetype}'])
+  endif
+  if !exists('g:airline_section_y')
+    let g:airline_section_y = airline#section#create_right(['ffenc'])
+  endif
+  if !exists('g:airline_section_z')
+    let g:airline_section_z = airline#section#create_right(['%3p%% %{g:airline_symbols.linenr} %3l:%3c '])
+  endif
+  if !exists('g:airline_section_warning')
+    let g:airline_section_warning = airline#section#create(['syntastic', 'whitespace'])
+  endif
+endfunction
+

autoload/airline/parts.vim

@@ -1,13 +1,46 @@
 " MIT License. Copyright (c) 2013 Bailey Ling.
 " vim: et ts=2 sts=2 sw=2
 
+let s:parts = {}
+
+function! airline#parts#define(key, config)
+  let s:parts[a:key] = get(s:parts, a:key, {})
+  call extend(s:parts[a:key], a:config)
+endfunction
+
+function! airline#parts#define_function(key, name)
+  call airline#parts#define(a:key, { 'function': a:name })
+endfunction
+
+function! airline#parts#define_text(key, text)
+  call airline#parts#define(a:key, { 'text': a:text })
+endfunction
+
+function! airline#parts#define_raw(key, raw)
+  call airline#parts#define(a:key, { 'raw': a:raw })
+endfunction
+
+function! airline#parts#define_empty(keys)
+  for key in a:keys
+    call airline#parts#define_raw(key, '')
+  endfor
+endfunction
+
+function! airline#parts#get(key)
+  return get(s:parts, a:key, {})
+endfunction
+
+function! airline#parts#mode()
+  return get(w:, 'airline_current_mode', '')
+endfunction
+
 function! airline#parts#paste()
-  return g:airline_detect_paste && &paste ? '  '.g:airline_symbols.paste : ''
+  return g:airline_detect_paste && &paste ? g:airline_symbols.paste : ''
 endfunction
 
 function! airline#parts#iminsert()
   if g:airline_detect_iminsert && &iminsert && exists('b:keymap_name')
-    return '  '.g:airline_left_alt_sep.' '.toupper(b:keymap_name)
+    return toupper(b:keymap_name)
   endif
   return ''
 endfunction

autoload/airline/section.vim

@@ -0,0 +1,52 @@
+" MIT License. Copyright (c) 2013 Bailey Ling.
+" vim: et ts=2 sts=2 sw=2
+
+function! s:get_val(key, append)
+  let part = airline#parts#get(a:key)
+
+  let val = ''
+  if exists('part.highlight')
+    let val .= '%#'.(part.highlight).'#'
+  endif
+
+  if exists('part.function')
+    let func = (part.function).'()'
+  elseif exists('part.text')
+    let func = '"'.(part.text).'"'
+  elseif exists('part.raw')
+    return val.(part.raw)
+  else
+    return a:key
+  endif
+
+  if a:append > 0
+    let val .= '%{airline#util#append('.func.')}'
+  elseif a:append < 0
+    let val .= '%{airline#util#prepend('.func.')}'
+  else
+    let val .= '%{'.func.'}'
+  endif
+  return val
+endfunction
+
+function! airline#section#create(parts)
+  return join(map(a:parts, 's:get_val(v:val, 0)'), '')
+endfunction
+
+function! airline#section#create_left(parts)
+  let _ = s:get_val(a:parts[0], 0)
+  for i in range(1, len(a:parts) - 1)
+    let _ .= s:get_val(a:parts[i], 1)
+  endfor
+  return _
+endfunction
+
+function! airline#section#create_right(parts)
+  let _ = ''
+  for i in range(0, len(a:parts) - 2)
+    let _ .= s:get_val(a:parts[i], -1)
+  endfor
+  let _ .= s:get_val(a:parts[-1], 0)
+  return _
+endfunction
+

autoload/airline/util.vim

@@ -1,6 +1,14 @@
 " MIT License. Copyright (c) 2013 Bailey Ling.
 " vim: et ts=2 sts=2 sw=2
 
+function! airline#util#append(text)
+  return empty(a:text) ? '' : '  '.g:airline_left_alt_sep.' '.a:text
+endfunction
+
+function! airline#util#prepend(text)
+  return empty(a:text) ? '' : a:text.' '.g:airline_right_alt_sep.' '
+endfunction
+
 if v:version >= 704
   function! airline#util#getwinvar(winnr, key, def)
     return getwinvar(a:winnr, a:key, a:def)

doc/airline.txt

@@ -391,9 +391,6 @@ For contributions into the plugin, here are the following guidelines:
   b.  Configuration variables for the extension should reside in the
       extension, e.g. `g:airline#extensions#foo_plugin#bar_variable`.
 
-  c.  A value should be added to the `g:airline_parts` dictionary such that
-      the extension can be arbitrarily positioned.
-
 See the source of |example.vim| for a working extension.
 
 ==============================================================================

plugin/airline.vim

@@ -8,86 +8,13 @@ let g:loaded_airline = 1
 
 " autocmd VimEnter * call airline#deprecation#check()
 
-function! s:check_defined(variable, default)
-  if !exists(a:variable)
-    let {a:variable} = a:default
-  endif
-endfunction
-
 let s:airline_initialized = 0
 let s:airline_theme_defined = 0
 function! s:init()
   if !s:airline_initialized
     let s:airline_initialized = 1
 
-    call s:check_defined('g:airline_left_sep', get(g:, 'airline_powerline_fonts', 0)?"":">")
+    call airline#init#bootstrap()
-    call s:check_defined('g:airline_left_alt_sep', get(g:, 'airline_powerline_fonts', 0)?"":">")
-    call s:check_defined('g:airline_right_sep', get(g:, 'airline_powerline_fonts', 0)?"":"<")
-    call s:check_defined('g:airline_right_alt_sep', get(g:, 'airline_powerline_fonts', 0)?"":"<")
-    call s:check_defined('g:airline_detect_modified', 1)
-    call s:check_defined('g:airline_detect_paste', 1)
-    call s:check_defined('g:airline_detect_iminsert', 0)
-    call s:check_defined('g:airline_inactive_collapse', 1)
-    call s:check_defined('g:airline_exclude_filenames', ['DebuggerWatch','DebuggerStack','DebuggerStatus'])
-    call s:check_defined('g:airline_exclude_filetypes', [])
-    call s:check_defined('g:airline_exclude_preview', 0)
-
-    call s:check_defined('g:airline_symbols', {})
-    call extend(g:airline_symbols, {
-          \ 'paste': get(g:, 'airline_paste_symbol', g:airline_left_alt_sep.' PASTE'),
-          \ 'readonly': get(g:, 'airline_readonly_symbol', get(g:, 'airline_powerline_fonts', 0) ? '' : 'RO'),
-          \ 'whitespace': get(g:, 'airline_powerline_fonts', 0) ? '✹' : '!',
-          \ 'linenr': get(g:, 'airline_linecolumn_prefix', get(g:, 'airline_powerline_fonts', 0) ? '' : ':' ),
-          \ 'branch': get(g:, 'airline_branch_prefix', get(g:, 'airline_powerline_fonts', 0) ? '' : ''),
-          \ }, 'keep')
-
-    call s:check_defined('g:airline_parts', {})
-    call extend(g:airline_parts, {
-          \ 'mode': '%{get(w:,"airline_current_mode","")}',
-          \ 'iminsert': '%{airline#parts#iminsert()}',
-          \ 'paste': '%{airline#parts#paste()}',
-          \ 'readonly': '%#airline_file#%{airline#parts#readonly()}',
-          \ 'ffenc': '%{printf("%s%s",&fenc,strlen(&ff)>0?"[".&ff."]":"")}',
-          \ 'file': '%f%m',
-          \ 'hunks': '',
-          \ 'branch': '',
-          \ 'tagbar': '',
-          \ 'syntastic': '',
-          \ 'whitespace': '',
-          \ }, 'keep')
-
-    call s:check_defined('g:airline_mode_map', {})
-    call extend(g:airline_mode_map, {
-          \ '__' : '------',
-          \ 'n'  : 'NORMAL',
-          \ 'i'  : 'INSERT',
-          \ 'R'  : 'REPLACE',
-          \ 'v'  : 'VISUAL',
-          \ 'V'  : 'V-LINE',
-          \ 'c'  : 'COMMAND',
-          \ '' : 'V-BLOCK',
-          \ 's'  : 'SELECT',
-          \ 'S'  : 'S-LINE',
-          \ '' : 'S-BLOCK',
-          \ }, 'keep')
-
-    call s:check_defined('g:airline_theme_map', {})
-    call extend(g:airline_theme_map, {
-          \ 'Tomorrow.*': 'tomorrow',
-          \ 'mo[l|n]okai': 'molokai',
-          \ 'wombat.*': 'wombat',
-          \ '.*solarized.*': 'solarized',
-          \ }, 'keep')
-
-    call airline#extensions#load()
-    call s:check_defined('g:airline_section_a', (g:airline_parts.mode).(g:airline_parts.paste).(g:airline_parts.iminsert))
-    call s:check_defined('g:airline_section_b', (g:airline_parts.hunks).(g:airline_parts.branch))
-    call s:check_defined('g:airline_section_c', '%<'.(g:airline_parts.file))
-    call s:check_defined('g:airline_section_gutter', ' '.(g:airline_parts.readonly).'%=')
-    call s:check_defined('g:airline_section_x', (g:airline_parts.tagbar).'%{&filetype}')
-    call s:check_defined('g:airline_section_y', g:airline_parts.ffenc)
-    call s:check_defined('g:airline_section_z', '%3p%% %{g:airline_symbols.linenr} %3l:%3c ')
-    call s:check_defined('g:airline_section_warning', (g:airline_parts.syntastic).(g:airline_parts.whitespace))
 
     let s:airline_theme_defined = exists('g:airline_theme')
     if s:airline_theme_defined || !airline#switch_matching_theme()
@@ -127,47 +54,48 @@ function! s:airline_toggle()
       au!
     augroup END
     augroup! airline
-      if exists("s:stl")
-        let &stl = s:stl
-      endif
-    else
-      let s:stl = &stl
-      augroup airline
-        autocmd!
 
-        autocmd CmdwinEnter *
+    if exists("s:stl")
-              \ call airline#add_statusline_func('airline#cmdwinenter')
+      let &stl = s:stl
-              \ | call <sid>on_window_changed()
-        autocmd CmdwinLeave * call airline#remove_statusline_func('airline#cmdwinenter')
-
-        autocmd ColorScheme * call <sid>on_colorscheme_changed()
-        autocmd WinEnter,BufWinEnter,FileType,BufUnload,ShellCmdPost,VimResized *
-              \ call <sid>on_window_changed()
-
-        autocmd BufWritePost */autoload/airline/themes/*.vim
-              \ exec 'source '.split(globpath(&rtp, 'autoload/airline/themes/'.g:airline_theme.'.vim', 1), "\n")[0]
-              \ | call airline#load_theme()
-      augroup END
-      if s:airline_initialized
-        call <sid>on_window_changed()
-      endif
     endif
-  endfunction
+  else
+    let s:stl = &stl
+    augroup airline
+      autocmd!
 
-  function! s:get_airline_themes(a, l, p)
+      autocmd CmdwinEnter *
-    let files = split(globpath(&rtp, 'autoload/airline/themes/'.a:a.'*'), "\n")
+            \ call airline#add_statusline_func('airline#cmdwinenter')
-    return map(files, 'fnamemodify(v:val, ":t:r")')
+            \ | call <sid>on_window_changed()
-  endfunction
+      autocmd CmdwinLeave * call airline#remove_statusline_func('airline#cmdwinenter')
-  function! s:airline_theme(...)
+
-    if a:0
+      autocmd ColorScheme * call <sid>on_colorscheme_changed()
-      call airline#switch_theme(a:1)
+      autocmd WinEnter,BufWinEnter,FileType,BufUnload,ShellCmdPost,VimResized *
-    else
+            \ call <sid>on_window_changed()
-      echo g:airline_theme
+
+      autocmd BufWritePost */autoload/airline/themes/*.vim
+            \ exec 'source '.split(globpath(&rtp, 'autoload/airline/themes/'.g:airline_theme.'.vim', 1), "\n")[0]
+            \ | call airline#load_theme()
+    augroup END
+    if s:airline_initialized
+      call <sid>on_window_changed()
     endif
-  endfunction
+  endif
-  command! -nargs=? -complete=customlist,<sid>get_airline_themes AirlineTheme call <sid>airline_theme(<f-args>)
+endfunction
-  command! AirlineToggleWhitespace call airline#extensions#whitespace#toggle()
-  command! AirlineToggle call <sid>airline_toggle()
 
-  call <sid>airline_toggle()
+function! s:get_airline_themes(a, l, p)
+  let files = split(globpath(&rtp, 'autoload/airline/themes/'.a:a.'*'), "\n")
+  return map(files, 'fnamemodify(v:val, ":t:r")')
+endfunction
+function! s:airline_theme(...)
+  if a:0
+    call airline#switch_theme(a:1)
+  else
+    echo g:airline_theme
+  endif
+endfunction
+command! -nargs=? -complete=customlist,<sid>get_airline_themes AirlineTheme call <sid>airline_theme(<f-args>)
+command! AirlineToggleWhitespace call airline#extensions#whitespace#toggle()
+command! AirlineToggle call <sid>airline_toggle()
+
+call <sid>airline_toggle()
 

t/builder.vim

@@ -0,0 +1,47 @@
+call airline#init#bootstrap()
+
+describe 'active builder'
+  before
+    let s:builder = airline#builder#new({'active': 1})
+  end
+
+  it 'should have a call to check mode'
+    let stl = s:builder.build()
+    Expect stl =~ '%{airline#check_mode()}'
+  end
+
+  it 'should transition colors from one to the next'
+    call s:builder.add_section('Normal', 'hello')
+    call s:builder.add_section('NonText', 'world')
+    let stl = s:builder.build()
+    Expect stl =~ '%#Normal#hello%#Normal_to_NonText#>%#NonText#world'
+  end
+
+  it 'should split left/right sections'
+    call s:builder.split()
+    let stl = s:builder.build()
+    Expect stl =~ '%='
+  end
+
+  it 'after split, sections use the right separator'
+    call s:builder.split()
+    call s:builder.add_section('Normal', 'hello')
+    call s:builder.add_section('NonText', 'world')
+    let stl = s:builder.build()
+    Expect stl =~ '%#Normal#hello%#Normal_to_NonText#<%#NonText#world'
+  end
+end
+
+describe 'inactive builder'
+  before
+    let s:builder = airline#builder#new({'active': 0})
+  end
+
+  it 'should transition colors from one to the next'
+    call s:builder.add_section('Normal', 'hello')
+    call s:builder.add_section('NonText', 'world')
+    let stl = s:builder.build()
+    Expect stl =~ '%#Normal_inactive#hello%#Normal_to_NonText_inactive#>%#NonText_inactive#world'
+  end
+end
+

t/commands.vim

@@ -0,0 +1,26 @@
+call airline#init#bootstrap()
+source plugin/airline.vim
+
+describe 'commands'
+  it 'should toggle off and on'
+    execute 'AirlineToggle'
+    Expect exists('#airline') to_be_false
+    execute 'AirlineToggle'
+    Expect exists('#airline') to_be_true
+  end
+
+  it 'should toggle whitespace off and on'
+    execute 'AirlineToggleWhitespace'
+    Expect exists('#airline_whitespace') to_be_false
+    execute 'AirlineToggleWhitespace'
+    Expect exists('#airline_whitespace') to_be_true
+  end
+
+  it 'should display theme name with no args'
+    execute 'AirlineTheme simple'
+    Expect g:airline_theme == 'simple'
+    execute 'AirlineTheme dark'
+    Expect g:airline_theme == 'dark'
+  end
+end
+

t/extensions_default.vim

@@ -0,0 +1,22 @@
+call airline#init#bootstrap()
+
+describe 'default'
+  before
+    let s:builder = airline#builder#new({'active': 1})
+  end
+
+  it 'should use the layout'
+    let g:airline#extensions#default#layout = [
+          \ [ 'c', 'a', 'b', 'warning' ],
+          \ [ 'x', 'z', 'y' ]
+          \ ]
+    call airline#extensions#default#apply(s:builder, { 'winnr': 1, 'active': 1 })
+    let stl = s:builder.build()
+    Expect stl =~ 'airline_c_to_airline_a'
+    Expect stl =~ 'airline_a_to_airline_b'
+    Expect stl =~ 'airline_b_to_airline_warning'
+    Expect stl =~ 'airline_x_to_airline_z'
+    Expect stl =~ 'airline_z_to_airline_y'
+  end
+end
+

t/init.vim

@@ -0,0 +1,65 @@
+let s:sections = ['a', 'b', 'c', 'gutter', 'x', 'y', 'z', 'warning']
+
+function! s:clear()
+  for key in s:sections
+    unlet! g:airline_section_{key}
+  endfor
+endfunction
+
+describe 'init'
+  before
+    call s:clear()
+    call airline#init#bootstrap()
+  end
+
+  after
+    call s:clear()
+  end
+
+  it 'section a should have mode, paste, iminsert'
+    Expect g:airline_section_a =~ 'mode'
+    Expect g:airline_section_a =~ 'paste'
+    Expect g:airline_section_a =~ 'iminsert'
+  end
+
+  it 'section b should be blank because no extensions are installed'
+    Expect g:airline_section_b == ''
+  end
+
+  it 'section c should be file'
+    Expect g:airline_section_c == '%<%f%m'
+  end
+
+  it 'section x should be filetype'
+    Expect g:airline_section_x =~ '&filetype'
+  end
+
+  it 'section y should be fenc and ff'
+    Expect g:airline_section_y =~ 'ff'
+    Expect g:airline_section_y =~ 'fenc'
+  end
+
+  it 'section z should be line numbers'
+    Expect g:airline_section_z =~ '%3p%%'
+    Expect g:airline_section_z =~ '%3l'
+    Expect g:airline_section_z =~ '%3c'
+  end
+
+  it 'should not redefine sections already defined'
+    for s in s:sections
+      let g:airline_section_{s} = s
+    endfor
+    call airline#init#bootstrap()
+    for s in s:sections
+      Expect g:airline_section_{s} == s
+    endfor
+  end
+
+  it 'all default statusline extensions should be blank'
+    Expect airline#parts#get('hunks').raw == ''
+    Expect airline#parts#get('branch').raw == ''
+    Expect airline#parts#get('tagbar').raw == ''
+    Expect airline#parts#get('syntastic').raw == ''
+  end
+end
+

t/parts.vim

@@ -0,0 +1,24 @@
+describe 'parts'
+  it 'overwrites existing values'
+    call airline#parts#define('foo', { 'test': '123' })
+    Expect airline#parts#get('foo').test == '123'
+    call airline#parts#define('foo', { 'test': '321' })
+    Expect airline#parts#get('foo').test == '321'
+  end
+
+  it 'can define a function part'
+    call airline#parts#define_function('func', 'bar')
+    Expect airline#parts#get('func').function == 'bar'
+  end
+
+  it 'can define a text part'
+    call airline#parts#define_text('text', 'bar')
+    Expect airline#parts#get('text').text == 'bar'
+  end
+
+  it 'can define a raw part'
+    call airline#parts#define_raw('raw', 'bar')
+    Expect airline#parts#get('raw').raw == 'bar'
+  end
+end
+

t/section.vim

@@ -0,0 +1,37 @@
+call airline#init#bootstrap()
+
+function! SectionSpec()
+endfunction
+
+describe 'section'
+  before
+    call airline#parts#define_text('text', 'text')
+    call airline#parts#define_raw('raw', 'raw')
+    call airline#parts#define_function('func', 'SectionSpec')
+    call airline#parts#define('hi', {
+          \ 'raw': 'hello',
+          \ 'highlight': 'hlgroup',
+          \ })
+  end
+
+  it 'should create sections with no separators'
+    let s = airline#section#create(['text', 'raw', 'func'])
+    Expect s == '%{"text"}raw%{SectionSpec()}'
+  end
+
+  it 'should create left sections with separators'
+    let s = airline#section#create_left(['text', 'text'])
+    Expect s == '%{"text"}%{airline#util#append("text")}'
+  end
+
+  it 'should create right sections with separators'
+    let s = airline#section#create_right(['text', 'text'])
+    Expect s == '%{airline#util#prepend("text")}%{"text"}'
+  end
+
+  it 'should prefix with highlight group if provided'
+    let s = airline#section#create(['hi'])
+    Expect s == '%#hlgroup#hello'
+  end
+end
+

t/util.vim

@@ -0,0 +1,42 @@
+call airline#init#bootstrap()
+
+function! Util1()
+  let g:count += 1
+endfunction
+function! Util2()
+  let g:count += 2
+endfunction
+function! Util3(...)
+  let g:count = a:0
+endfunction
+
+describe 'util'
+  before
+    let g:count = 0
+  end
+
+  it 'has append wrapper function'
+    Expect airline#util#append('') == ''
+    Expect airline#util#append('1') == '  > 1'
+  end
+
+  it 'has prepend wrapper function'
+    Expect airline#util#prepend('') == ''
+    Expect airline#util#prepend('1') == '1 < '
+  end
+
+  it 'has getwinvar function'
+    Expect airline#util#getwinvar(1, 'asdf', '123') == '123'
+    call setwinvar(1, 'vspec', 'is cool')
+    Expect airline#util#getwinvar(1, 'vspec', '') == 'is cool'
+  end
+
+  it 'has exec funcrefs helper functions'
+    call airline#util#exec_funcrefs([function('Util1'), function('Util2')])
+    Expect g:count == 3
+
+    call airline#util#exec_funcrefs([function('Util3')], 1, 2, 3, 4)
+    Expect g:count == 4
+  end
+end
+