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#include "../extern/ftest/ftest.h"
#include "utf8.h"
#include <string>
using namespace utf8;
using namespace std;
#if __cplusplus >= 201703L // C++ 17 or later
TEST(CPP17APITests, test_utf16to8)
{
u16string utf16string = {0x41, 0x0448, 0x65e5, 0xd834, 0xdd1e};
u16string_view utf16stringview(utf16string);
string u = utf16to8(utf16stringview);
EXPECT_EQ (u.size(), 10);
}
TEST(CPP17APITests, test_utf8to16)
{
string_view utf8_with_surrogates = "\xe6\x97\xa5\xd1\x88\xf0\x9d\x84\x9e";
u16string utf16result = utf8to16(utf8_with_surrogates);
EXPECT_EQ (utf16result.size(), 4);
EXPECT_EQ (utf16result[2], 0xd834);
EXPECT_EQ (utf16result[3], 0xdd1e);
}
TEST(CPP17APITests, test_utf32to8)
{
u32string utf32string = {0x448, 0x65E5, 0x10346};
u32string_view utf32stringview(utf32string);
string utf8result = utf32to8(utf32stringview);
EXPECT_EQ (utf8result.size(), 9);
}
TEST(CPP17APITests, test_utf8to32)
{
string_view twochars = "\xe6\x97\xa5\xd1\x88";
u32string utf32result = utf8to32(twochars);
EXPECT_EQ (utf32result.size(), 2);
}
TEST(CPP17APITests, test_find_invalid)
{
string_view utf_invalid = "\xe6\x97\xa5\xd1\x88\xfa";
auto invalid = find_invalid(utf_invalid);
EXPECT_EQ (invalid, 5);
}
TEST(CPP17APITests, test_is_valid)
{
string_view utf_invalid = "\xe6\x97\xa5\xd1\x88\xfa";
bool bvalid = is_valid(utf_invalid);
EXPECT_FALSE (bvalid);
string_view utf8_with_surrogates = "\xe6\x97\xa5\xd1\x88\xf0\x9d\x84\x9e";
bvalid = is_valid(utf8_with_surrogates);
EXPECT_TRUE (bvalid);
}
TEST(CPP17APITests, test_replace_invalid)
{
string_view invalid_sequence = "a\x80\xe0\xa0\xc0\xaf\xed\xa0\x80z";
string replace_invalid_result = replace_invalid(invalid_sequence, '?');
bool bvalid = is_valid(replace_invalid_result);
EXPECT_TRUE (bvalid);
const string fixed_invalid_sequence = "a????z";
EXPECT_EQ(fixed_invalid_sequence, replace_invalid_result);
}
TEST(CPP17APITests, test_starts_with_bom)
{
string byte_order_mark = {char(0xef), char(0xbb), char(0xbf)};
string_view byte_order_mark_view(byte_order_mark);
bool bbom = starts_with_bom(byte_order_mark_view);
EXPECT_TRUE (bbom);
string_view threechars = "\xf0\x90\x8d\x86\xe6\x97\xa5\xd1\x88";
bool no_bbom = starts_with_bom(threechars);
EXPECT_FALSE (no_bbom);
}
TEST(CPP17APITests, string_class_and_literals)
{
const char* twochars = u8"ab";
EXPECT_TRUE (is_valid(twochars));
const string two_chars_string(twochars);
EXPECT_TRUE (is_valid(two_chars_string));
}
#endif // C++ 11 or later
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