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local helpers = require("test.unit.helpers")(after_each)
local itp = helpers.gen_itp(it)
local cimport = helpers.cimport
local eq = helpers.eq
local ffi = helpers.ffi
local to_cstr = helpers.to_cstr
local strings = cimport('stdlib.h', './src/nvim/strings.h',
'./src/nvim/memory.h')
describe('vim_strsave_escaped()', function()
local vim_strsave_escaped = function(s, chars)
local res = strings.vim_strsave_escaped(to_cstr(s), to_cstr(chars))
local ret = ffi.string(res)
-- Explicitly free memory so we are sure it is allocated: if it was not it
-- will crash.
strings.xfree(res)
return ret
end
itp('precedes by a backslash all chars from second argument', function()
eq([[\a\b\c\d]], vim_strsave_escaped('abcd','abcd'))
end)
itp('precedes by a backslash chars only from second argument', function()
eq([[\a\bcd]], vim_strsave_escaped('abcd','ab'))
end)
itp('returns a copy of passed string if second argument is empty', function()
eq('text \n text', vim_strsave_escaped('text \n text',''))
end)
itp('returns an empty string if first argument is empty string', function()
eq('', vim_strsave_escaped('','\r'))
end)
itp('returns a copy of passed string if it does not contain chars from 2nd argument', function()
eq('some text', vim_strsave_escaped('some text', 'a'))
end)
end)
describe('vim_strnsave_unquoted()', function()
local vim_strnsave_unquoted = function(s, len)
local res = strings.vim_strnsave_unquoted(to_cstr(s), len or #s)
local ret = ffi.string(res)
-- Explicitly free memory so we are sure it is allocated: if it was not it
-- will crash.
strings.xfree(res)
return ret
end
itp('copies unquoted strings as-is', function()
eq('-c', vim_strnsave_unquoted('-c'))
eq('', vim_strnsave_unquoted(''))
end)
itp('respects length argument', function()
eq('', vim_strnsave_unquoted('-c', 0))
eq('-', vim_strnsave_unquoted('-c', 1))
eq('-', vim_strnsave_unquoted('"-c', 2))
end)
itp('unquotes fully quoted word', function()
eq('/bin/sh', vim_strnsave_unquoted('"/bin/sh"'))
end)
itp('unquotes partially quoted word', function()
eq('/Program Files/sh', vim_strnsave_unquoted('/Program" "Files/sh'))
end)
itp('removes ""', function()
eq('/Program Files/sh', vim_strnsave_unquoted('/""Program" "Files/sh'))
end)
itp('performs unescaping of "', function()
eq('/"Program Files"/sh', vim_strnsave_unquoted('/"\\""Program Files"\\""/sh'))
end)
itp('performs unescaping of \\', function()
eq('/\\Program Files\\foo/sh', vim_strnsave_unquoted('/"\\\\"Program Files"\\\\foo"/sh'))
end)
itp('strips quote when there is no pair to it', function()
eq('/Program Files/sh', vim_strnsave_unquoted('/Program" Files/sh'))
eq('', vim_strnsave_unquoted('"'))
end)
itp('allows string to end with one backslash unescaped', function()
eq('/Program Files/sh\\', vim_strnsave_unquoted('/Program" Files/sh\\'))
end)
itp('does not perform unescaping out of quotes', function()
eq('/Program\\ Files/sh\\', vim_strnsave_unquoted('/Program\\ Files/sh\\'))
end)
itp('does not unescape \\n', function()
eq('/Program\\nFiles/sh', vim_strnsave_unquoted('/Program"\\n"Files/sh'))
end)
end)
describe('vim_strchr()', function()
local vim_strchr = function(s, c)
local str = to_cstr(s)
local res = strings.vim_strchr(str, c)
if res == nil then
return nil
else
return res - str
end
end
itp('handles NUL and <0 correctly', function()
eq(nil, vim_strchr('abc', 0))
eq(nil, vim_strchr('abc', -1))
end)
itp('works', function()
eq(0, vim_strchr('abc', ('a'):byte()))
eq(1, vim_strchr('abc', ('b'):byte()))
eq(2, vim_strchr('abc', ('c'):byte()))
eq(0, vim_strchr('a«b»c', ('a'):byte()))
eq(3, vim_strchr('a«b»c', ('b'):byte()))
eq(6, vim_strchr('a«b»c', ('c'):byte()))
eq(nil, vim_strchr('«»', ('«'):byte()))
-- 0xAB == 171 == '«'
eq(nil, vim_strchr('\171', 0xAB))
eq(0, vim_strchr('«»', 0xAB))
eq(3, vim_strchr('„«»“', 0xAB))
eq(7, vim_strchr('„«»“', 0x201C))
eq(nil, vim_strchr('„«»“', 0x201D))
eq(0, vim_strchr('„«»“', 0x201E))
eq(0, vim_strchr('\244\143\188\128', 0x10FF00))
eq(2, vim_strchr('«\244\143\188\128»', 0x10FF00))
-- |0xDBFF |0xDF00 - surrogate pair for 0x10FF00
eq(nil, vim_strchr('«\237\175\191\237\188\128»', 0x10FF00))
end)
end)
describe('strcase_save()' , function()
local strcase_save = function(input_string, upper)
local res = strings.strcase_save(to_cstr(input_string), upper)
return ffi.string(res)
end
itp('decodes overlong encoded characters.', function()
eq("A", strcase_save("\xc1\x81", true))
eq("a", strcase_save("\xc1\x81", false))
end)
end)
describe("reverse_text", function()
local reverse_text = function(str)
return helpers.internalize(strings.reverse_text(to_cstr(str)))
end
itp("handles empty string", function()
eq("", reverse_text(""))
end)
itp("handles simple cases", function()
eq("a", reverse_text("a"))
eq("ba", reverse_text("ab"))
end)
itp("handles multibyte characters", function()
eq("bα", reverse_text("αb"))
eq("Yötön yö", reverse_text("öy nötöY"))
end)
itp("handles combining chars", function()
local utf8_COMBINING_RING_ABOVE = "\204\138"
local utf8_COMBINING_RING_BELOW = "\204\165"
eq("bba" .. utf8_COMBINING_RING_ABOVE .. utf8_COMBINING_RING_BELOW .. "aa",
reverse_text("aaa" .. utf8_COMBINING_RING_ABOVE .. utf8_COMBINING_RING_BELOW .. "bb"))
end)
itp("treats invalid utf as separate characters", function()
eq("\192ba", reverse_text("ab\192"))
end)
itp("treats an incomplete utf continuation sequence as valid", function()
eq("\194ba", reverse_text("ab\194"))
end)
end)
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