mirror of
https://github.com/neovim/neovim.git
synced 2024-09-17 20:58:20 -04:00
51 lines
1.7 KiB
Lua
51 lines
1.7 KiB
Lua
local t = require('test.unit.testutil')
|
||
local itp = t.gen_itp(it)
|
||
|
||
local cimport = t.cimport
|
||
local cstr = t.cstr
|
||
local eq = t.eq
|
||
local ffi = t.ffi
|
||
local to_cstr = t.to_cstr
|
||
|
||
local cimp = cimport('stdlib.h', './src/nvim/memory.h')
|
||
|
||
describe('xstrlcat()', function()
|
||
local function test_xstrlcat(dst, src, dsize)
|
||
assert.is_true(dsize >= 1 + string.len(dst)) -- sanity check for tests
|
||
local dst_cstr = cstr(dsize, dst)
|
||
local src_cstr = to_cstr(src)
|
||
eq(string.len(dst .. src), cimp.xstrlcat(dst_cstr, src_cstr, dsize))
|
||
return ffi.string(dst_cstr)
|
||
end
|
||
|
||
local function test_xstrlcat_overlap(dst, src_idx, dsize)
|
||
assert.is_true(dsize >= 1 + string.len(dst)) -- sanity check for tests
|
||
local dst_cstr = cstr(dsize, dst)
|
||
local src_cstr = dst_cstr + src_idx -- pointer into `dst` (overlaps)
|
||
eq(string.len(dst) + string.len(dst) - src_idx, cimp.xstrlcat(dst_cstr, src_cstr, dsize))
|
||
return ffi.string(dst_cstr)
|
||
end
|
||
|
||
itp('concatenates strings', function()
|
||
eq('ab', test_xstrlcat('a', 'b', 3))
|
||
eq('ab', test_xstrlcat('a', 'b', 4096))
|
||
eq('ABCיהZdefgiיהZ', test_xstrlcat('ABCיהZ', 'defgiיהZ', 4096))
|
||
eq('b', test_xstrlcat('', 'b', 4096))
|
||
eq('a', test_xstrlcat('a', '', 4096))
|
||
end)
|
||
|
||
itp('concatenates overlapping strings', function()
|
||
eq('abcabc', test_xstrlcat_overlap('abc', 0, 7))
|
||
eq('abca', test_xstrlcat_overlap('abc', 0, 5))
|
||
eq('abcb', test_xstrlcat_overlap('abc', 1, 5))
|
||
eq('abcc', test_xstrlcat_overlap('abc', 2, 10))
|
||
eq('abcabc', test_xstrlcat_overlap('abc', 0, 2343))
|
||
end)
|
||
|
||
itp('truncates if `dsize` is too small', function()
|
||
eq('a', test_xstrlcat('a', 'b', 2))
|
||
eq('', test_xstrlcat('', 'b', 1))
|
||
eq('ABCיהZd', test_xstrlcat('ABCיהZ', 'defgiיהZ', 10))
|
||
end)
|
||
end)
|