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local t = require('test.unit.testutil')
local itp = t.gen_itp(it)
local ffi = t.ffi
local eq = t.eq
local to_cstr = t.to_cstr
local cimp = t.cimport('./src/nvim/message.h', './src/nvim/memory.h', './src/nvim/strings.h')
describe('trunc_string', function()
local buflen = 40
local function test_inplace(s, expected, room)
room = room and room or 20
local buf = cimp.xmalloc(ffi.sizeof('char') * buflen)
ffi.C.strcpy(buf, s)
cimp.trunc_string(buf, buf, room, buflen)
eq(expected, ffi.string(buf))
cimp.xfree(buf)
end
local function test_copy(s, expected, room)
room = room and room or 20
local buf = cimp.xmalloc(ffi.sizeof('char') * buflen)
local str = cimp.xstrdup(to_cstr(s))
cimp.trunc_string(str, buf, room, buflen)
eq(expected, ffi.string(buf))
cimp.xfree(buf)
cimp.xfree(str)
end
local permutations = {
{ ['desc'] = 'in-place', ['func'] = test_inplace },
{ ['desc'] = 'by copy', ['func'] = test_copy },
}
for _, q in ipairs(permutations) do
describe('populates buf ' .. q.desc, function()
itp('with a small string', function()
q.func('text', 'text')
end)
itp('with a medium string', function()
q.func('a short text', 'a short text')
end)
itp('with a string of length == 1/2 room', function()
q.func('a text that fits', 'a text that fits', 34)
end)
itp('with a string exactly the truncate size', function()
q.func('a text tha just fits', 'a text tha just fits')
end)
itp('with a string that must be truncated', function()
q.func('a text that nott fits', 'a text t...nott fits')
end)
end)
end
end)
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