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local t = require('test.testutil')
local n = require('test.functional.testnvim')()
local clear = n.clear
local eq = t.eq
local eval = n.eval
local fn = n.fn
local api = n.api
local exc_exec = n.exc_exec
describe('printf()', function()
before_each(clear)
it('works with zero and %b', function()
eq('0', fn.printf('%lb', 0))
eq('0', fn.printf('%llb', 0))
eq('0', fn.printf('%zb', 0))
end)
it('works with one and %b', function()
eq('1', fn.printf('%b', 1))
eq('1', fn.printf('%lb', 1))
eq('1', fn.printf('%llb', 1))
eq('1', fn.printf('%zb', 1))
end)
it('works with 0xff and %b', function()
eq('11111111', fn.printf('%b', 0xff))
eq('11111111', fn.printf('%lb', 0xff))
eq('11111111', fn.printf('%llb', 0xff))
eq('11111111', fn.printf('%zb', 0xff))
end)
it('accepts width modifier with %b', function()
eq(' 1', fn.printf('%3b', 1))
end)
it('accepts prefix modifier with %b', function()
eq('0b1', fn.printf('%#b', 1))
end)
it('writes capital B with %B', function()
eq('0B1', fn.printf('%#B', 1))
end)
it('accepts prefix, zero-fill and width modifiers with %b', function()
eq('0b001', fn.printf('%#05b', 1))
end)
it('accepts prefix and width modifiers with %b', function()
eq(' 0b1', fn.printf('%#5b', 1))
end)
it('does not write prefix for zero with prefix and width modifier used with %b', function()
eq(' 0', fn.printf('%#5b', 0))
end)
it('accepts precision modifier with %b', function()
eq('00000', fn.printf('%.5b', 0))
end)
it('accepts all modifiers with %b at once', function()
-- zero-fill modifier is ignored when used with left-align
-- force-sign and add-blank are ignored
-- use-grouping-characters modifier is ignored always
eq('0b00011 ', fn.printf("% '+#0-10.5b", 3))
end)
it('errors out when %b modifier is used for a list', function()
eq('Vim(call):E745: Using a List as a Number', exc_exec('call printf("%b", [])'))
end)
it('errors out when %b modifier is used for a float', function()
eq('Vim(call):E805: Using a Float as a Number', exc_exec('call printf("%b", 3.1415926535)'))
end)
it('works with %p correctly', function()
local null_ret = nil
local seen_rets = {}
-- Collect all args in an array to avoid possible allocation of the same
-- address after freeing unreferenced values.
api.nvim_set_var('__args', {})
local function check_printf(expr, is_null)
eq(0, exc_exec('call add(__args, ' .. expr .. ')'))
eq(0, exc_exec('let __result = printf("%p", __args[-1])'))
local id_ret = eval('id(__args[-1])')
eq(id_ret, api.nvim_get_var('__result'))
if is_null then
if null_ret then
eq(null_ret, id_ret)
else
null_ret = id_ret
end
else
eq(nil, seen_rets[id_ret])
seen_rets[id_ret] = expr
end
api.nvim_del_var('__result')
end
check_printf('v:_null_list', true)
check_printf('v:_null_dict', true)
check_printf('[]')
check_printf('{}')
check_printf('function("tr", ["a"])')
end)
end)
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