changedtick_spec.lua (5680B)
1 local t = require('test.testutil') 2 local n = require('test.functional.testnvim')() 3 4 local eq = t.eq 5 local eval = n.eval 6 local feed = n.feed 7 local clear = n.clear 8 local fn = n.fn 9 local api = n.api 10 local command = n.command 11 local exc_exec = n.exc_exec 12 local pcall_err = t.pcall_err 13 local exec_capture = n.exec_capture 14 15 before_each(clear) 16 17 local function changedtick() 18 local ct = api.nvim_buf_get_changedtick(0) 19 eq(ct, api.nvim_buf_get_var(0, 'changedtick')) 20 eq(ct, api.nvim_buf_get_var(0, 'changedtick')) 21 eq(ct, eval('b:changedtick')) 22 eq(ct, eval('b:["changedtick"]')) 23 eq(ct, eval('b:.changedtick')) 24 eq(ct, fn.getbufvar('%', 'changedtick')) 25 eq(ct, fn.getbufvar('%', '').changedtick) 26 eq(ct, eval('b:').changedtick) 27 return ct 28 end 29 30 describe('b:changedtick', function() 31 -- Ported tests from Vim-8.0.333 32 it('increments', function() -- Test_changedtick_increments 33 -- New buffer has an empty line, tick starts at 2 34 eq(2, changedtick()) 35 fn.setline(1, 'hello') 36 eq(3, changedtick()) 37 eq(0, exc_exec('undo')) 38 -- Somehow undo counts as two changes 39 eq(5, changedtick()) 40 end) 41 it('is present in b: dict', function() 42 eq(2, changedtick()) 43 command('let d = b:') 44 eq(2, api.nvim_get_var('d').changedtick) 45 end) 46 it('increments at bdel', function() 47 command('new') 48 eq(2, changedtick()) 49 local bnr = api.nvim_buf_get_number(0) 50 eq(2, bnr) 51 command('bdel') 52 eq(3, fn.getbufvar(bnr, 'changedtick')) 53 eq(1, api.nvim_buf_get_number(0)) 54 end) 55 it('fails to be changed by user', function() 56 local ct = changedtick() 57 local ctn = ct + 100500 58 eq(0, exc_exec('let d = b:')) 59 eq( 60 'Vim(let):E46: Cannot change read-only variable "b:changedtick"', 61 pcall_err(command, 'let b:changedtick = ' .. ctn) 62 ) 63 eq( 64 'Vim(let):E46: Cannot change read-only variable "b:["changedtick"]"', 65 pcall_err(command, 'let b:["changedtick"] = ' .. ctn) 66 ) 67 eq( 68 'Vim(let):E46: Cannot change read-only variable "b:.changedtick"', 69 pcall_err(command, 'let b:.changedtick = ' .. ctn) 70 ) 71 eq( 72 'Vim(let):E46: Cannot change read-only variable "d.changedtick"', 73 pcall_err(command, 'let d.changedtick = ' .. ctn) 74 ) 75 eq('Key is read-only: changedtick', pcall_err(api.nvim_buf_set_var, 0, 'changedtick', ctn)) 76 77 eq( 78 'Vim(unlet):E795: Cannot delete variable b:changedtick', 79 pcall_err(command, 'unlet b:changedtick') 80 ) 81 eq( 82 'Vim(unlet):E46: Cannot change read-only variable "b:.changedtick"', 83 pcall_err(command, 'unlet b:.changedtick') 84 ) 85 eq( 86 'Vim(unlet):E46: Cannot change read-only variable "b:["changedtick"]"', 87 pcall_err(command, 'unlet b:["changedtick"]') 88 ) 89 eq( 90 'Vim(unlet):E46: Cannot change read-only variable "d.changedtick"', 91 pcall_err(command, 'unlet d.changedtick') 92 ) 93 eq('Key is read-only: changedtick', pcall_err(api.nvim_buf_del_var, 0, 'changedtick')) 94 eq(ct, changedtick()) 95 96 eq( 97 'Vim(let):E46: Cannot change read-only variable "b:["changedtick"]"', 98 pcall_err(command, 'let b:["changedtick"] += ' .. ctn) 99 ) 100 eq( 101 'Vim(let):E46: Cannot change read-only variable "b:["changedtick"]"', 102 pcall_err(command, 'let b:["changedtick"] -= ' .. ctn) 103 ) 104 eq( 105 'Vim(let):E46: Cannot change read-only variable "b:["changedtick"]"', 106 pcall_err(command, 'let b:["changedtick"] .= ' .. ctn) 107 ) 108 109 eq(ct, changedtick()) 110 111 fn.setline(1, 'hello') 112 113 eq(ct + 1, changedtick()) 114 end) 115 it('is listed in :let output', function() 116 eq('b:changedtick #2', exec_capture(':let b:')) 117 end) 118 it('fails to unlock b:changedtick', function() 119 eq(0, exc_exec('let d = b:')) 120 eq(0, fn.islocked('b:changedtick')) 121 eq(0, fn.islocked('d.changedtick')) 122 eq( 123 'Vim(unlockvar):E940: Cannot lock or unlock variable b:changedtick', 124 pcall_err(command, 'unlockvar b:changedtick') 125 ) 126 eq( 127 'Vim(unlockvar):E46: Cannot change read-only variable "d.changedtick"', 128 pcall_err(command, 'unlockvar d.changedtick') 129 ) 130 eq(0, fn.islocked('b:changedtick')) 131 eq(0, fn.islocked('d.changedtick')) 132 eq( 133 'Vim(lockvar):E940: Cannot lock or unlock variable b:changedtick', 134 pcall_err(command, 'lockvar b:changedtick') 135 ) 136 eq( 137 'Vim(lockvar):E46: Cannot change read-only variable "d.changedtick"', 138 pcall_err(command, 'lockvar d.changedtick') 139 ) 140 eq(0, fn.islocked('b:changedtick')) 141 eq(0, fn.islocked('d.changedtick')) 142 end) 143 it('is being completed', function() 144 feed(':echo b:<Tab><Home>let cmdline="<End>"<CR>') 145 eq('echo b:changedtick', api.nvim_get_var('cmdline')) 146 end) 147 it('cannot be changed by filter() or map()', function() 148 eq(2, changedtick()) 149 eq( 150 'Vim(call):E795: Cannot delete variable filter() argument', 151 pcall_err(command, 'call filter(b:, 0)') 152 ) 153 eq( 154 'Vim(call):E742: Cannot change value of map() argument', 155 pcall_err(command, 'call map(b:, 0)') 156 ) 157 eq( 158 'Vim(call):E742: Cannot change value of map() argument', 159 pcall_err(command, 'call map(b:, "v:val")') 160 ) 161 eq(2, changedtick()) 162 end) 163 it('cannot be remove()d', function() 164 eq(2, changedtick()) 165 eq( 166 'Vim(call):E795: Cannot delete variable remove() argument', 167 pcall_err(command, 'call remove(b:, "changedtick")') 168 ) 169 eq(2, changedtick()) 170 end) 171 it('does not inherit VAR_FIXED when copying dict over', function() 172 eq(2, changedtick()) 173 eq('', exec_capture('let d1 = copy(b:)|let d1.changedtick = 42')) 174 eq('', exec_capture('let d2 = copy(b:)|unlet d2.changedtick')) 175 eq(2, changedtick()) 176 end) 177 end)