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+" Tests for the exists() function
+func Test_exists()
+ augroup myagroup
+ autocmd! BufEnter *.my echo "myfile edited"
+ autocmd! FuncUndefined UndefFun exec "fu UndefFun()\nendfu"
+ augroup END
+ set rtp+=./sautest
+
+ " valid autocmd group
+ call assert_equal(1, exists('#myagroup'))
+ " valid autocmd group with garbage
+ call assert_equal(0, exists('#myagroup+b'))
+ " Valid autocmd group and event
+ call assert_equal(1, exists('#myagroup#BufEnter'))
+ " Valid autocmd group, event and pattern
+ call assert_equal(1, exists('#myagroup#BufEnter#*.my'))
+ " Valid autocmd event
+ call assert_equal(1, exists('#BufEnter'))
+ " Valid autocmd event and pattern
+ call assert_equal(1, exists('#BufEnter#*.my'))
+ " Non-existing autocmd group or event
+ call assert_equal(0, exists('#xyzagroup'))
+ " Non-existing autocmd group and valid autocmd event
+ call assert_equal(0, exists('#xyzagroup#BufEnter'))
+ " Valid autocmd group and event with no matching pattern
+ call assert_equal(0, exists('#myagroup#CmdwinEnter'))
+ " Valid autocmd group and non-existing autocmd event
+ call assert_equal(0, exists('#myagroup#xyzacmd'))
+ " Valid autocmd group and event and non-matching pattern
+ call assert_equal(0, exists('#myagroup#BufEnter#xyzpat'))
+ " Valid autocmd event and non-matching pattern
+ call assert_equal(0, exists('#BufEnter#xyzpat'))
+ " Empty autocmd group, event and pattern
+ call assert_equal(0, exists('###'))
+ " Empty autocmd group and event or empty event and pattern
+ call assert_equal(0, exists('##'))
+ " Valid autocmd event
+ call assert_equal(1, exists('##FileReadCmd'))
+ " Non-existing autocmd event
+ call assert_equal(0, exists('##MySpecialCmd'))
+
+ " Existing and working option (long form)
+ call assert_equal(1, exists('&textwidth'))
+ " Existing and working option (short form)
+ call assert_equal(1, exists('&tw'))
+ " Existing and working option with garbage
+ call assert_equal(0, exists('&tw-'))
+ " Global option
+ call assert_equal(1, exists('&g:errorformat'))
+ " Local option
+ call assert_equal(1, exists('&l:errorformat'))
+ " Negative form of existing and working option (long form)
+ call assert_equal(0, exists('&nojoinspaces'))
+ " Negative form of existing and working option (short form)
+ call assert_equal(0, exists('&nojs'))
+ " Non-existing option
+ call assert_equal(0, exists('&myxyzoption'))
+
+ " Existing and working option (long form)
+ call assert_equal(1, exists('+incsearch'))
+ " Existing and working option with garbage
+ call assert_equal(0, exists('+incsearch!1'))
+ " Existing and working option (short form)
+ call assert_equal(1, exists('+is'))
+ " Existing option that is hidden.
+ call assert_equal(0, exists('+autoprint'))
+
+ " Existing environment variable
+ let $EDITOR_NAME = 'Vim Editor'
+ call assert_equal(1, exists('$EDITOR_NAME'))
+ " Non-existing environment variable
+ call assert_equal(0, exists('$NON_ENV_VAR'))
+
+ " Valid internal function
+ call assert_equal(1, exists('*bufnr'))
+ " Valid internal function with ()
+ call assert_equal(1, exists('*bufnr()'))
+ " Non-existing internal function
+ call assert_equal(0, exists('*myxyzfunc'))
+ " Valid internal function with garbage
+ call assert_equal(0, exists('*bufnr&6'))
+ " Valid user defined function
+ call assert_equal(1, exists('*Test_exists'))
+ " Non-existing user defined function
+ call assert_equal(0, exists('*MyxyzFunc'))
+ " Function that may be created by FuncUndefined event
+ call assert_equal(0, exists('*UndefFun'))
+ " Function that may be created by script autoloading
+ call assert_equal(0, exists('*footest#F'))
+
+ " Valid internal command (full match)
+ call assert_equal(2, exists(':edit'))
+ " Valid internal command (full match) with garbage
+ call assert_equal(0, exists(':edit/a'))
+ " Valid internal command (partial match)
+ call assert_equal(1, exists(':q'))
+ " Non-existing internal command
+ call assert_equal(0, exists(':invalidcmd'))
+
+ " User defined command (full match)
+ command! MyCmd :echo 'My command'
+ call assert_equal(2, exists(':MyCmd'))
+ " User defined command (partial match)
+ command! MyOtherCmd :echo 'Another command'
+ call assert_equal(3, exists(':My'))
+
+ " Command modifier
+ call assert_equal(2, exists(':rightbelow'))
+
+ " Non-existing user defined command (full match)
+ delcommand MyCmd
+ call assert_equal(0, exists(':MyCmd'))
+
+ " Non-existing user defined command (partial match)
+ delcommand MyOtherCmd
+ call assert_equal(0, exists(':My'))
+
+ " Valid local variable
+ let local_var = 1
+ call assert_equal(1, exists('local_var'))
+ " Valid local variable with garbage
+ call assert_equal(0, exists('local_var%n'))
+ " Non-existing local variable
+ unlet local_var
+ call assert_equal(0, exists('local_var'))
+
+ " Non-existing autoload variable that may be autoloaded
+ call assert_equal(0, exists('footest#x'))
+
+ " Valid local list
+ let local_list = ["blue", "orange"]
+ call assert_equal(1, exists('local_list'))
+ " Valid local list item
+ call assert_equal(1, exists('local_list[1]'))
+ " Valid local list item with garbage
+ call assert_equal(0, exists('local_list[1]+5'))
+ " Invalid local list item
+ call assert_equal(0, exists('local_list[2]'))
+ " Non-existing local list
+ unlet local_list
+ call assert_equal(0, exists('local_list'))
+ " Valid local dictionary
+ let local_dict = {"xcord":100, "ycord":2}
+ call assert_equal(1, exists('local_dict'))
+ " Non-existing local dictionary
+ unlet local_dict
+ call assert_equal(0, exists('local_dict'))
+ " Existing local curly-brace variable
+ let str = "local"
+ let curly_{str}_var = 1
+ call assert_equal(1, exists('curly_{str}_var'))
+ " Non-existing local curly-brace variable
+ unlet curly_{str}_var
+ call assert_equal(0, exists('curly_{str}_var'))
+
+ " Existing global variable
+ let g:global_var = 1
+ call assert_equal(1, exists('g:global_var'))
+ " Existing global variable with garbage
+ call assert_equal(0, exists('g:global_var-n'))
+ " Non-existing global variable
+ unlet g:global_var
+ call assert_equal(0, exists('g:global_var'))
+ " Existing global list
+ let g:global_list = ["blue", "orange"]
+ call assert_equal(1, exists('g:global_list'))
+ " Non-existing global list
+ unlet g:global_list
+ call assert_equal(0, exists('g:global_list'))
+ " Existing global dictionary
+ let g:global_dict = {"xcord":100, "ycord":2}
+ call assert_equal(1, exists('g:global_dict'))
+ " Non-existing global dictionary
+ unlet g:global_dict
+ call assert_equal(0, exists('g:global_dict'))
+ " Existing global curly-brace variable
+ let str = "global"
+ let g:curly_{str}_var = 1
+ call assert_equal(1, exists('g:curly_{str}_var'))
+ " Non-existing global curly-brace variable
+ unlet g:curly_{str}_var
+ call assert_equal(0, exists('g:curly_{str}_var'))
+
+ " Existing window variable
+ let w:window_var = 1
+ call assert_equal(1, exists('w:window_var'))
+ " Non-existing window variable
+ unlet w:window_var
+ call assert_equal(0, exists('w:window_var'))
+ " Existing window list
+ let w:window_list = ["blue", "orange"]
+ call assert_equal(1, exists('w:window_list'))
+ " Non-existing window list
+ unlet w:window_list
+ call assert_equal(0, exists('w:window_list'))
+ " Existing window dictionary
+ let w:window_dict = {"xcord":100, "ycord":2}
+ call assert_equal(1, exists('w:window_dict'))
+ " Non-existing window dictionary
+ unlet w:window_dict
+ call assert_equal(0, exists('w:window_dict'))
+ " Existing window curly-brace variable
+ let str = "window"
+ let w:curly_{str}_var = 1
+ call assert_equal(1, exists('w:curly_{str}_var'))
+ " Non-existing window curly-brace variable
+ unlet w:curly_{str}_var
+ call assert_equal(0, exists('w:curly_{str}_var'))
+
+ " Existing tab variable
+ let t:tab_var = 1
+ call assert_equal(1, exists('t:tab_var'))
+ " Non-existing tab variable
+ unlet t:tab_var
+ call assert_equal(0, exists('t:tab_var'))
+ " Existing tab list
+ let t:tab_list = ["blue", "orange"]
+ call assert_equal(1, exists('t:tab_list'))
+ " Non-existing tab list
+ unlet t:tab_list
+ call assert_equal(0, exists('t:tab_list'))
+ " Existing tab dictionary
+ let t:tab_dict = {"xcord":100, "ycord":2}
+ call assert_equal(1, exists('t:tab_dict'))
+ " Non-existing tab dictionary
+ unlet t:tab_dict
+ call assert_equal(0, exists('t:tab_dict'))
+ " Existing tab curly-brace variable
+ let str = "tab"
+ let t:curly_{str}_var = 1
+ call assert_equal(1, exists('t:curly_{str}_var'))
+ " Non-existing tab curly-brace variable
+ unlet t:curly_{str}_var
+ call assert_equal(0, exists('t:curly_{str}_var'))
+
+ " Existing buffer variable
+ let b:buffer_var = 1
+ call assert_equal(1, exists('b:buffer_var'))
+ " Non-existing buffer variable
+ unlet b:buffer_var
+ call assert_equal(0, exists('b:buffer_var'))
+ " Existing buffer list
+ let b:buffer_list = ["blue", "orange"]
+ call assert_equal(1, exists('b:buffer_list'))
+ " Non-existing buffer list
+ unlet b:buffer_list
+ call assert_equal(0, exists('b:buffer_list'))
+ " Existing buffer dictionary
+ let b:buffer_dict = {"xcord":100, "ycord":2}
+ call assert_equal(1, exists('b:buffer_dict'))
+ " Non-existing buffer dictionary
+ unlet b:buffer_dict
+ call assert_equal(0, exists('b:buffer_dict'))
+ " Existing buffer curly-brace variable
+ let str = "buffer"
+ let b:curly_{str}_var = 1
+ call assert_equal(1, exists('b:curly_{str}_var'))
+ " Non-existing buffer curly-brace variable
+ unlet b:curly_{str}_var
+ call assert_equal(0, exists('b:curly_{str}_var'))
+
+ " Existing Vim internal variable
+ call assert_equal(1, exists('v:version'))
+ " Non-existing Vim internal variable
+ call assert_equal(0, exists('v:non_exists_var'))
+
+ " Existing script-local variable
+ let s:script_var = 1
+ call assert_equal(1, exists('s:script_var'))
+ " Non-existing script-local variable
+ unlet s:script_var
+ call assert_equal(0, exists('s:script_var'))
+ " Existing script-local list
+ let s:script_list = ["blue", "orange"]
+ call assert_equal(1, exists('s:script_list'))
+ " Non-existing script-local list
+ unlet s:script_list
+ call assert_equal(0, exists('s:script_list'))
+ " Existing script-local dictionary
+ let s:script_dict = {"xcord":100, "ycord":2}
+ call assert_equal(1, exists('s:script_dict'))
+ " Non-existing script-local dictionary
+ unlet s:script_dict
+ call assert_equal(0, exists('s:script_dict'))
+ " Existing script curly-brace variable
+ let str = "script"
+ let s:curly_{str}_var = 1
+ call assert_equal(1, exists('s:curly_{str}_var'))
+ " Non-existing script-local curly-brace variable
+ unlet s:curly_{str}_var
+ call assert_equal(0, exists('s:curly_{str}_var'))
+
+ " Existing script-local function
+ function! s:my_script_func()
+ endfunction
+
+ echo '*s:my_script_func: 1'
+ call assert_equal(1, exists('*s:my_script_func'))
+
+ " Non-existing script-local function
+ delfunction s:my_script_func
+
+ call assert_equal(0, exists('*s:my_script_func'))
+ unlet str
+
+ call assert_equal(1, g:footest#x)
+ call assert_equal(0, footest#F())
+ call assert_equal(0, UndefFun())
+endfunc
+
+" exists() test for Function arguments
+func FuncArg_Tests(func_arg, ...)
+ call assert_equal(1, exists('a:func_arg'))
+ call assert_equal(0, exists('a:non_exists_arg'))
+ call assert_equal(1, exists('a:1'))
+ call assert_equal(0, exists('a:2'))
+endfunc
+
+func Test_exists_funcarg()
+ call FuncArg_Tests("arg1", "arg2")
+endfunc