From 2ef9f51df48b14556e236d14213233e1bd7f829a Mon Sep 17 00:00:00 2001
From: Roland Reichwein <mail@reichwein.it>
Date: Sat, 30 Jan 2021 19:20:15 +0100
Subject: Added Support for Debian and Ubuntu, add is_valid_utf()

---
 src/test-unicode.cpp | 50 ++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 48 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/test-unicode.cpp b/src/test-unicode.cpp
index 05370c7..3d67124 100644
--- a/src/test-unicode.cpp
+++ b/src/test-unicode.cpp
@@ -37,7 +37,7 @@ std::vector<types_collection_type> success_sets {
 std::vector<std::basic_string<utf8_t>> failure_strings_char8_t {
  u8"\x80", // utf-8 continuation byte
  u8"\x81", // utf-8 continuation byte
- u8"\xc3ä", // initial byte of utf-8 "ä", followed by valid utf-8 "ä"
+ u8"\xc3\xc3\xa4", // initial byte of utf-8 "ä", followed by valid utf-8 "ä"
  u8"\xF8\x80\x80\x80\x80", // overlong encoding
  u8"\xF7\xBF\xBF\xBF", // valid encoding of invalid code point
 };
@@ -56,6 +56,7 @@ std::vector<std::basic_string<char32_t>> failure_strings_char32_t {
 // output operators must be in same namespace as the type itself
 namespace std {
 
+#ifdef __cpp_char8_t
 std::ostream& operator<<(std::ostream& os, std::basic_string<utf8_t> const& s)
 {
  os << "[";
@@ -65,6 +66,7 @@ std::ostream& operator<<(std::ostream& os, std::basic_string<utf8_t> const& s)
 
  return os;
 }
+#endif
 
 std::ostream& operator<<(std::ostream& os, std::basic_string<char16_t> const& s)
 {
@@ -118,6 +120,27 @@ BOOST_AUTO_TEST_CASE(utf_to_utf_success)
   test_utf_to_utf(t);
 }
 
+template<size_t i = 0, typename... Ts>
+void test_is_valid_utf(std::tuple<Ts...>& t)
+{
+ typedef typename std::tuple_element<i,typename std::remove_reference<decltype(t)>::type>::type T;
+
+ // test
+ bool result { unicode::is_valid_utf<typename T::value_type>(std::get<i>(t)) };
+
+ BOOST_CHECK_MESSAGE(result == true, "is_valid_utf w/ " << typeid(T).name() << "(" << i << ", " << std::get<i>(t) << "), got " << result);
+
+ // iterate over other combinations
+ if constexpr (i + 1 < std::tuple_size<typename std::remove_reference<decltype(t)>::type>::value)
+  test_is_valid_utf<i + 1>(t);
+}
+
+BOOST_AUTO_TEST_CASE(is_valid_utf_success)
+{
+ for (auto& t: success_sets)
+  test_is_valid_utf(t);
+}
+
 // iterate over std::tuple T types
 template<typename From, typename Collection, size_t index = 0>
 void test_utf_to_utf_failure(std::basic_string<From>& s)
@@ -126,7 +149,7 @@ void test_utf_to_utf_failure(std::basic_string<From>& s)
 
  try {
   unicode::utf_to_utf<From,To>(s);
-  BOOST_FAIL("Expected exception at index: " << index << ", " << typeid(From).name() << " -> " << typeid(To).name());
+  BOOST_ERROR("Expected exception at index: " << index << ", " << typeid(From).name() << " -> " << typeid(To).name());
  } catch (...) {
   // OK
  };
@@ -148,6 +171,29 @@ BOOST_AUTO_TEST_CASE(utf_to_utf_failure)
   test_utf_to_utf_failure<typename std::remove_reference<decltype(s)>::type::value_type, types_collection_type>(s);
 }
 
+// iterate over std::tuple T types
+template<typename T, typename Collection, size_t index = 0>
+void test_is_valid_utf_failure(std::basic_string<T>& s)
+{
+ BOOST_CHECK_MESSAGE(unicode::is_valid_utf<T>(s) == false, "Expected bad UTF at index: " << index << ", " << typeid(T).name());
+
+ // iterate over remaining types 
+ if constexpr (index + 1 < std::tuple_size<Collection>::value)
+  test_is_valid_utf_failure<T, Collection, index + 1>(s);
+}
+
+BOOST_AUTO_TEST_CASE(is_valid_utf_failure)
+{
+ for (auto& s: failure_strings_char8_t)
+  test_is_valid_utf_failure<typename std::remove_reference<decltype(s)>::type::value_type, types_collection_type>(s);
+ 
+ for (auto& s: failure_strings_char16_t)
+  test_is_valid_utf_failure<typename std::remove_reference<decltype(s)>::type::value_type, types_collection_type>(s);
+
+ for (auto& s: failure_strings_char32_t)
+  test_is_valid_utf_failure<typename std::remove_reference<decltype(s)>::type::value_type, types_collection_type>(s);
+}
+
 BOOST_AUTO_TEST_CASE(is_valid_unicode)
 {
  BOOST_CHECK(unicode::is_valid_unicode('\0'));
-- 
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