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local t = require('test.unit.testutil')
local t_eval = require('test.unit.eval.testutil')
local itp = t.gen_itp(it)
local cimport = t.cimport
local eq = t.eq
local eval0 = t_eval.eval0
local eval = cimport('./src/nvim/eval.h', './src/nvim/eval/typval.h', './src/nvim/memory.h')
describe('NULL typval_T', function()
itp('is produced by $XXX_UNEXISTENT_VAR_XXX', function()
-- Required for various tests which need to check whether typval_T with NULL
-- string works correctly. This test checks that unexistent environment
-- variable produces NULL string, not that some specific environment
-- variable does not exist. Last bit is left for the test writers.
local unexistent_env = 'XXX_UNEXISTENT_VAR_XXX'
while os.getenv(unexistent_env) ~= nil do
unexistent_env = unexistent_env .. '_XXX'
end
local rettv = eval0('$' .. unexistent_env)
eq(eval.VAR_STRING, rettv.v_type)
eq(nil, rettv.vval.v_string)
end)
itp('is produced by v:_null_list', function()
local rettv = eval0('v:_null_list')
eq(eval.VAR_LIST, rettv.v_type)
eq(nil, rettv.vval.v_list)
end)
itp('is produced by v:_null_dict', function()
local rettv = eval0('v:_null_dict')
eq(eval.VAR_DICT, rettv.v_type)
eq(nil, rettv.vval.v_dict)
end)
end)
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