ZeroTierOne/ext/libpqxx-7.7.3/test/unit/test_encodings.cxx
2022-06-24 10:12:36 -07:00

115 lines
3.1 KiB
C++

#include "../test_helpers.hxx"
#include "pqxx/internal/encodings.hxx"
namespace
{
void test_scan_ascii()
{
auto const scan{pqxx::internal::get_glyph_scanner(
pqxx::internal::encoding_group::MONOBYTE)};
std::string const text{"hello"};
PQXX_CHECK_EQUAL(
scan(text.c_str(), std::size(text), 0), 1ul,
"Monobyte scanner acting up.");
PQXX_CHECK_EQUAL(
scan(text.c_str(), std::size(text), 1), 2ul,
"Monobyte scanner is inconsistent.");
}
void test_scan_utf8()
{
auto const scan{
pqxx::internal::get_glyph_scanner(pqxx::internal::encoding_group::UTF8)};
// Thai: "Khrab".
std::string const text{"\xe0\xb8\x95\xe0\xb8\xa3\xe0\xb8\xb1\xe0\xb8\x9a"};
PQXX_CHECK_EQUAL(
scan(text.c_str(), std::size(text), 0), 3ul,
"UTF-8 scanner mis-scanned Thai khor khwai.");
PQXX_CHECK_EQUAL(
scan(text.c_str(), std::size(text), 3), 6ul,
"UTF-8 scanner mis-scanned Thai ror reua.");
}
void test_for_glyphs_empty()
{
bool iterated{false};
pqxx::internal::for_glyphs(
pqxx::internal::encoding_group::MONOBYTE,
[&iterated](char const *, char const *) { iterated = true; }, "", 0);
PQXX_CHECK(!iterated, "Empty string went through an iteration.");
}
void test_for_glyphs_ascii()
{
std::string const text{"hi"};
std::vector<std::ptrdiff_t> points;
pqxx::internal::for_glyphs(
pqxx::internal::encoding_group::UTF8,
[&points](char const *gbegin, char const *gend) {
points.push_back(gend - gbegin);
},
text.c_str(), std::size(text));
PQXX_CHECK_EQUAL(std::size(points), 2u, "Wrong number of ASCII iterations.");
PQXX_CHECK_EQUAL(points[0], 1u, "ASCII iteration started off wrong.");
PQXX_CHECK_EQUAL(points[1], 1u, "ASCII iteration was inconsistent.");
}
void test_for_glyphs_utf8()
{
// Greek: alpha omega.
std::string const text{"\xce\x91\xce\xa9"};
std::vector<std::ptrdiff_t> points;
pqxx::internal::for_glyphs(
pqxx::internal::encoding_group::UTF8,
[&points](char const *gbegin, char const *gend) {
points.push_back(gend - gbegin);
},
text.c_str(), std::size(text));
PQXX_CHECK_EQUAL(std::size(points), 2u, "Wrong number of UTF-8 iterations.");
PQXX_CHECK_EQUAL(points[0], 2u, "UTF-8 iteration started off wrong.");
PQXX_CHECK_EQUAL(points[1], 2u, "ASCII iteration was inconsistent.");
// Greek lambda, ASCII plus sign, Old Persian Gu.
std::string const mix{"\xce\xbb+\xf0\x90\x8e\xa6"};
points.clear();
pqxx::internal::for_glyphs(
pqxx::internal::encoding_group::UTF8,
[&points](char const *gbegin, char const *gend) {
points.push_back(gend - gbegin);
},
mix.c_str(), std::size(mix));
PQXX_CHECK_EQUAL(std::size(points), 3u, "Mixed UTF-8 iteration is broken.");
PQXX_CHECK_EQUAL(points[0], 2u, "Mixed UTF-8 iteration started off wrong.");
PQXX_CHECK_EQUAL(points[1], 1u, "Mixed UTF-8 iteration got ASCII wrong.");
PQXX_CHECK_EQUAL(
points[2], 4u, "Mixed UTF-8 iteration got long char wrong.");
}
void test_encodings()
{
test_scan_ascii();
test_scan_utf8();
test_for_glyphs_empty();
test_for_glyphs_ascii();
test_for_glyphs_utf8();
}
PQXX_REGISTER_TEST(test_encodings);
} // namespace