neovim/test/functional/vimscript/special_vars_spec.lua
Justin M. Keyes d8de4eb685
test: reorg #15698
Problem:
Subdirectories like "visual", "insert", "normal" encourage people to
separate *related* tests for no good reason.  Typically the _mode_ is
not the relevant topic of a test (and when it is, _then_ create
an appropriate describe() or it()).

Solution:
- Delete the various `test/functional/<mode>/` subdirectories, move
  their tests to more meaningful topics.
- Rename `…/normal/` to `…/editor/`.
  - Move or merge `…/visual/*` and `…/insert/*` tests into here where
    appropriate.
- Rename `…/eval/` to `…/vimscript/`.
  - Move `…/viml/*` into here also.

* test(reorg): insert/* => editor/mode_insert_spec.lua
* test(reorg): cmdline/* => editor/mode_cmdline_spec.lua
* test(reorg): eval core tests => eval_spec.lua
2021-09-17 09:16:40 -07:00

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local helpers = require('test.functional.helpers')(after_each)
local exc_exec = helpers.exc_exec
local command = helpers.command
local funcs = helpers.funcs
local clear = helpers.clear
local eval = helpers.eval
local eq = helpers.eq
local meths = helpers.meths
local NIL = helpers.NIL
describe('Special values', function()
before_each(clear)
it('do not cause error when freed', function()
command([[
function Test()
try
return v:true
finally
return 'something else'
endtry
endfunction
]])
eq(0, exc_exec('call Test()'))
end)
it('work with empty()', function()
eq(0, funcs.empty(true))
eq(1, funcs.empty(false))
eq(1, funcs.empty(NIL))
end)
it('can be stringified and evaled back', function()
eq(true, funcs.eval(funcs.string(true)))
eq(false, funcs.eval(funcs.string(false)))
eq(NIL, funcs.eval(funcs.string(NIL)))
end)
it('work with is/isnot properly', function()
eq(1, eval('v:null is v:null'))
eq(0, eval('v:null is v:true'))
eq(0, eval('v:null is v:false'))
eq(1, eval('v:true is v:true'))
eq(0, eval('v:true is v:false'))
eq(1, eval('v:false is v:false'))
eq(0, eval('v:null is 0'))
eq(0, eval('v:true is 0'))
eq(0, eval('v:false is 0'))
eq(0, eval('v:null is 1'))
eq(0, eval('v:true is 1'))
eq(0, eval('v:false is 1'))
eq(0, eval('v:null is ""'))
eq(0, eval('v:true is ""'))
eq(0, eval('v:false is ""'))
eq(0, eval('v:null is "null"'))
eq(0, eval('v:true is "true"'))
eq(0, eval('v:false is "false"'))
eq(0, eval('v:null is []'))
eq(0, eval('v:true is []'))
eq(0, eval('v:false is []'))
eq(0, eval('v:null isnot v:null'))
eq(1, eval('v:null isnot v:true'))
eq(1, eval('v:null isnot v:false'))
eq(0, eval('v:true isnot v:true'))
eq(1, eval('v:true isnot v:false'))
eq(0, eval('v:false isnot v:false'))
eq(1, eval('v:null isnot 0'))
eq(1, eval('v:true isnot 0'))
eq(1, eval('v:false isnot 0'))
eq(1, eval('v:null isnot 1'))
eq(1, eval('v:true isnot 1'))
eq(1, eval('v:false isnot 1'))
eq(1, eval('v:null isnot ""'))
eq(1, eval('v:true isnot ""'))
eq(1, eval('v:false isnot ""'))
eq(1, eval('v:null isnot "null"'))
eq(1, eval('v:true isnot "true"'))
eq(1, eval('v:false isnot "false"'))
eq(1, eval('v:null isnot []'))
eq(1, eval('v:true isnot []'))
eq(1, eval('v:false isnot []'))
end)
it('work with +/-/* properly', function()
eq(1, eval('0 + v:true'))
eq(0, eval('0 + v:null'))
eq(0, eval('0 + v:false'))
eq(-1, eval('0 - v:true'))
eq( 0, eval('0 - v:null'))
eq( 0, eval('0 - v:false'))
eq(1, eval('1 * v:true'))
eq(0, eval('1 * v:null'))
eq(0, eval('1 * v:false'))
end)
it('does not work with +=/-=/.=', function()
meths.set_var('true', true)
meths.set_var('false', false)
command('let null = v:null')
eq('Vim(let):E734: Wrong variable type for +=', exc_exec('let true += 1'))
eq('Vim(let):E734: Wrong variable type for +=', exc_exec('let false += 1'))
eq('Vim(let):E734: Wrong variable type for +=', exc_exec('let null += 1'))
eq('Vim(let):E734: Wrong variable type for -=', exc_exec('let true -= 1'))
eq('Vim(let):E734: Wrong variable type for -=', exc_exec('let false -= 1'))
eq('Vim(let):E734: Wrong variable type for -=', exc_exec('let null -= 1'))
eq('Vim(let):E734: Wrong variable type for .=', exc_exec('let true .= 1'))
eq('Vim(let):E734: Wrong variable type for .=', exc_exec('let false .= 1'))
eq('Vim(let):E734: Wrong variable type for .=', exc_exec('let null .= 1'))
end)
it('work with . (concat) properly', function()
eq("true", eval('"" . v:true'))
eq("null", eval('"" . v:null'))
eq("false", eval('"" . v:false'))
end)
it('work with type()', function()
eq(6, funcs.type(true))
eq(6, funcs.type(false))
eq(7, funcs.type(NIL))
end)
it('work with copy() and deepcopy()', function()
eq(true, funcs.deepcopy(true))
eq(false, funcs.deepcopy(false))
eq(NIL, funcs.deepcopy(NIL))
eq(true, funcs.copy(true))
eq(false, funcs.copy(false))
eq(NIL, funcs.copy(NIL))
end)
it('fails in index', function()
eq('Vim(echo):E909: Cannot index a special variable', exc_exec('echo v:true[0]'))
eq('Vim(echo):E909: Cannot index a special variable', exc_exec('echo v:false[0]'))
eq('Vim(echo):E909: Cannot index a special variable', exc_exec('echo v:null[0]'))
end)
it('is accepted by assert_true and assert_false', function()
funcs.assert_false(false)
funcs.assert_false(true)
funcs.assert_false(NIL)
funcs.assert_true(false)
funcs.assert_true(true)
funcs.assert_true(NIL)
eq({
'Expected False but got v:true',
'Expected False but got v:null',
'Expected True but got v:false',
'Expected True but got v:null',
}, meths.get_vvar('errors'))
end)
describe('compat', function()
it('v:count is distinct from count', function()
command('let count = []') -- v:count is readonly
eq(1, eval('count is# g:["count"]'))
end)
it('v:errmsg is distinct from errmsg', function()
command('let errmsg = 1')
eq(1, eval('errmsg is# g:["errmsg"]'))
end)
it('v:shell_error is distinct from shell_error', function()
command('let shell_error = []') -- v:shell_error is readonly
eq(1, eval('shell_error is# g:["shell_error"]'))
end)
it('v:this_session is distinct from this_session', function()
command('let this_session = []')
eq(1, eval('this_session is# g:["this_session"]'))
end)
end)
end)