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+" Tests for the history functions
+
+source check.vim
+CheckFeature cmdline_hist
+
+set history=7
+
+function History_Tests(hist)
+ " First clear the history
+ call histadd(a:hist, 'dummy')
+ call assert_true(histdel(a:hist))
+ call assert_equal(-1, histnr(a:hist))
+ call assert_equal('', histget(a:hist))
+
+ call assert_true('ls'->histadd(a:hist))
+ call assert_true(histadd(a:hist, 'buffers'))
+ call assert_equal('buffers', histget(a:hist))
+ call assert_equal('ls', histget(a:hist, -2))
+ call assert_equal('ls', histget(a:hist, 1))
+ call assert_equal('', histget(a:hist, 5))
+ call assert_equal('', histget(a:hist, -5))
+ call assert_equal(2, histnr(a:hist))
+ call assert_true(histdel(a:hist, 2))
+ call assert_false(a:hist->histdel(7))
+ call assert_equal(1, histnr(a:hist))
+ call assert_equal('ls', histget(a:hist, -1))
+
+ call assert_true(histadd(a:hist, 'buffers'))
+ call assert_true(histadd(a:hist, 'ls'))
+ call assert_equal('ls', a:hist->histget(-1))
+ call assert_equal(4, a:hist->histnr())
+
+ let a=execute('history ' . a:hist)
+ call assert_match("^\n # \\S* history\n 3 buffers\n> 4 ls$", a)
+ let a=execute('history all')
+ call assert_match("^\n # .* history\n 3 buffers\n> 4 ls", a)
+
+ if len(a:hist) > 0
+ let a=execute('history ' . a:hist . ' 2')
+ call assert_match("^\n # \\S* history$", a)
+ let a=execute('history ' . a:hist . ' 3')
+ call assert_match("^\n # \\S* history\n 3 buffers$", a)
+ let a=execute('history ' . a:hist . ' 4')
+ call assert_match("^\n # \\S* history\n> 4 ls$", a)
+ let a=execute('history ' . a:hist . ' 3,4')
+ call assert_match("^\n # \\S* history\n 3 buffers\n> 4 ls$", a)
+ let a=execute('history ' . a:hist . ' -1')
+ call assert_match("^\n # \\S* history\n> 4 ls$", a)
+ let a=execute('history ' . a:hist . ' -2')
+ call assert_match("^\n # \\S* history\n 3 buffers$", a)
+ let a=execute('history ' . a:hist . ' -2,')
+ call assert_match("^\n # \\S* history\n 3 buffers\n> 4 ls$", a)
+ let a=execute('history ' . a:hist . ' -3')
+ call assert_match("^\n # \\S* history$", a)
+ endif
+
+ " Test for removing entries matching a pattern
+ for i in range(1, 3)
+ call histadd(a:hist, 'text_' . i)
+ endfor
+ call assert_true(histdel(a:hist, 'text_\d\+'))
+ call assert_equal('ls', histget(a:hist, -1))
+
+ " Test for freeing the entire history list
+ for i in range(1, 7)
+ call histadd(a:hist, 'text_' . i)
+ endfor
+ call histdel(a:hist)
+ for i in range(1, 7)
+ call assert_equal('', histget(a:hist, i))
+ call assert_equal('', histget(a:hist, i - 7 - 1))
+ endfor
+
+ " Test for freeing an entry at the beginning of the history list
+ for i in range(1, 4)
+ call histadd(a:hist, 'text_' . i)
+ endfor
+ call histdel(a:hist, 1)
+ call assert_equal('', histget(a:hist, 1))
+ call assert_equal('text_4', histget(a:hist, 4))
+endfunction
+
+function Test_History()
+ for h in ['cmd', ':', '', 'search', '/', '?', 'expr', '=', 'input', '@', 'debug', '>']
+ call History_Tests(h)
+ endfor
+
+ " Negative tests
+ call assert_false(histdel('abc'))
+ call assert_equal('', histget('abc'))
+ call assert_fails('call histdel([])', 'E730:')
+ call assert_equal('', histget(10))
+ call assert_fails('call histget([])', 'E730:')
+ call assert_equal(-1, histnr('abc'))
+ call assert_fails('call histnr([])', 'E730:')
+ call assert_fails('history xyz', 'E488:')
+ call assert_fails('history ,abc', 'E488:')
+ call assert_fails('call histdel(":", "\\%(")', 'E53:')
+endfunction
+
+function Test_history_truncates_long_entry()
+ " History entry short enough to fit on the screen should not be truncated.
+ call histadd(':', 'echo x' .. repeat('y', &columns - 17) .. 'z')
+ let a = execute('history : -1')
+
+ call assert_match("^\n # cmd history\n"
+ \ .. "> *\\d\\+ echo x" .. repeat('y', &columns - 17) .. 'z$', a)
+
+ " Long history entry should be truncated to fit on the screen, with, '...'
+ " inserted in the string to indicate the that there is truncation.
+ call histadd(':', 'echo x' .. repeat('y', &columns - 16) .. 'z')
+ let a = execute('history : -1')
+ call assert_match("^\n # cmd history\n"
+ \ .. "> *\\d\\+ echo xy\\+\.\.\.y\\+z$", a)
+endfunction
+
+function Test_Search_history_window()
+ new
+ call setline(1, ['a', 'b', 'a', 'b'])
+ 1
+ call feedkeys("/a\<CR>", 'xt')
+ call assert_equal('a', getline('.'))
+ 1
+ call feedkeys("/b\<CR>", 'xt')
+ call assert_equal('b', getline('.'))
+ 1
+ " select the previous /a command
+ call feedkeys("q/kk\<CR>", 'x!')
+ call assert_equal('a', getline('.'))
+ call assert_equal('a', @/)
+ bwipe!
+endfunc
+
+" Test for :history command option completion
+function Test_history_completion()
+ call feedkeys(":history \<C-A>\<C-B>\"\<CR>", 'tx')
+ call assert_equal('"history / : = > ? @ all cmd debug expr input search', @:)
+endfunc
+
+" Test for increasing the 'history' option value
+func Test_history_size()
+ let save_histsz = &history
+ set history=10
+ call histadd(':', 'ls')
+ call histdel(':')
+ for i in range(1, 5)
+ call histadd(':', 'cmd' .. i)
+ endfor
+ call assert_equal(5, histnr(':'))
+ call assert_equal('cmd5', histget(':', -1))
+
+ set history=15
+ for i in range(6, 10)
+ call histadd(':', 'cmd' .. i)
+ endfor
+ call assert_equal(10, histnr(':'))
+ call assert_equal('cmd1', histget(':', 1))
+ call assert_equal('cmd10', histget(':', -1))
+
+ set history=5
+ call histadd(':', 'abc')
+ call assert_equal('', histget(':', 6))
+ call assert_equal('', histget(':', 12))
+ call assert_equal('cmd7', histget(':', 7))
+ call assert_equal('abc', histget(':', -1))
+
+ " This test works only when the language is English
+ if v:lang == "C" || v:lang =~ '^[Ee]n'
+ set history=0
+ redir => v
+ call feedkeys(":history\<CR>", 'xt')
+ redir END
+ call assert_equal(["'history' option is zero"], split(v, "\n"))
+ endif
+
+ let &history=save_histsz
+endfunc
+
+" Test for recalling old search patterns in /
+func Test_history_search()
+ call histdel('/')
+ let g:pat = []
+ func SavePat()
+ call add(g:pat, getcmdline())
+ return ''
+ endfunc
+ cnoremap <F2> <C-\>eSavePat()<CR>
+ call histadd('/', 'pat1')
+ call histadd('/', 'pat2')
+ let @/ = ''
+ call feedkeys("/\<Up>\<F2>\<Up>\<F2>\<Down>\<Down>\<F2>\<Esc>", 'xt')
+ call assert_equal(['pat2', 'pat1', ''], g:pat)
+ cunmap <F2>
+ delfunc SavePat
+
+ " Search for a pattern that is not present in the history
+ call assert_beeps('call feedkeys("/a1b2\<Up>\<CR>", "xt")')
+
+ " Recall patterns with 'history' set to 0
+ set history=0
+ let @/ = 'abc'
+ let cmd = 'call feedkeys("/\<Up>\<Down>\<S-Up>\<S-Down>\<CR>", "xt")'
+ call assert_fails(cmd, 'E486:')
+ set history&
+
+ " Recall patterns till the end of history
+ set history=4
+ call histadd('/', 'pat')
+ call histdel('/')
+ call histadd('/', 'pat1')
+ call histadd('/', 'pat2')
+ call assert_beeps('call feedkeys("/\<Up>\<Up>\<Up>\<C-U>\<cr>", "xt")')
+ call assert_beeps('call feedkeys("/\<Down><cr>", "xt")')
+
+ " Test for wrapping around the history list
+ for i in range(3, 7)
+ call histadd('/', 'pat' .. i)
+ endfor
+ let upcmd = "\<up>\<up>\<up>\<up>\<up>"
+ let downcmd = "\<down>\<down>\<down>\<down>\<down>"
+ try
+ call feedkeys("/" .. upcmd .. "\<cr>", 'xt')
+ catch /E486:/
+ endtry
+ call assert_equal('pat4', @/)
+ try
+ call feedkeys("/" .. upcmd .. downcmd .. "\<cr>", 'xt')
+ catch /E486:/
+ endtry
+ call assert_equal('pat4', @/)
+
+ " Test for changing the search command separator in the history
+ call assert_fails('call feedkeys("/def/\<cr>", "xt")', 'E486:')
+ call assert_fails('call feedkeys("?\<up>\<cr>", "xt")', 'E486:')
+ call assert_equal('def?', histget('/', -1))
+
+ call assert_fails('call feedkeys("/ghi?\<cr>", "xt")', 'E486:')
+ call assert_fails('call feedkeys("?\<up>\<cr>", "xt")', 'E486:')
+ call assert_equal('ghi\?', histget('/', -1))
+
+ set history&
+endfunc
+
+" Test for making sure the key value is not stored in history
+func Test_history_crypt_key()
+ CheckFeature cryptv
+
+ call feedkeys(":set bs=2 key=abc ts=8\<CR>", 'xt')
+ call assert_equal('set bs=2 key= ts=8', histget(':'))
+
+ call assert_fails("call feedkeys(':set bs=2 key-=abc ts=8\<CR>', 'xt')")
+ call assert_equal('set bs=2 key-= ts=8', histget(':'))
+
+ set key& bs& ts&
+endfunc
+
+" The following used to overflow and causing an use-after-free
+func Test_history_max_val()
+
+ set history=10
+ call assert_fails(':history 2147483648', 'E1510:')
+ set history&
+endfunc
+
+" vim: shiftwidth=2 sts=2 expandtab