1 files changed, 109 insertions, 0 deletions
diff --git a/third-party/utf8cpp/tests/test_cpp11.cpp b/third-party/utf8cpp/tests/test_cpp11.cpp
new file mode 100644
index 0000000..ee4ddd8
--- /dev/null
+++ b/third-party/utf8cpp/tests/test_cpp11.cpp
@@ -0,0 +1,109 @@
+#include "../extern/ftest/ftest.h"
+#include "utf8.h"
+#include <string>
+using namespace utf8;
+using namespace std;
+
+#if __cplusplus >= 201103L // C++ 11 or later
+
+TEST(CPP11APITests, test_append)
+{
+    string u;
+    append(0x0448, u);
+    EXPECT_EQ (u[0], char(0xd1));
+    EXPECT_EQ (u[1], char(0x88));
+    EXPECT_EQ (u.length(), 2);
+
+    u.clear();
+    append(0x65e5, u);
+    EXPECT_EQ (u[0], char(0xe6));
+    EXPECT_EQ (u[1], char(0x97));
+    EXPECT_EQ (u[2], char(0xa5));
+    EXPECT_EQ (u.length(), 3);
+
+    u.clear();
+    append(0x3044, u);
+    EXPECT_EQ (u[0], char(0xe3));
+    EXPECT_EQ (u[1], char(0x81));
+    EXPECT_EQ (u[2], char(0x84));
+    EXPECT_EQ (u.length(), 3);
+
+    u.clear();
+    append(0x10346, u);
+    EXPECT_EQ (u[0], char(0xf0));
+    EXPECT_EQ (u[1], char(0x90));
+    EXPECT_EQ (u[2], char(0x8d));
+    EXPECT_EQ (u[3], char(0x86));
+    EXPECT_EQ (u.length(), 4);
+}
+
+TEST(CPP11APITests, test_utf16to8)
+{
+    u16string utf16string = {0x41, 0x0448, 0x65e5, 0xd834, 0xdd1e};
+    string u = utf16to8(utf16string);
+    EXPECT_EQ (u.size(), 10);
+}
+
+TEST(CPP11APITests, test_utf8to16)
+{
+    string 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);
+    // Just to make sure it compiles with string literals
+    utf8to16(u8"simple");
+    utf8to16("simple");
+}
+
+TEST(CPP11APITests, test_utf32to8)
+{
+    u32string utf32string = {0x448, 0x65E5, 0x10346};
+    string utf8result = utf32to8(utf32string);
+    EXPECT_EQ (utf8result.size(), 9);
+}
+
+TEST(CPP11APITests, test_utf8to32)
+{
+    const char* twochars = "\xe6\x97\xa5\xd1\x88";
+    u32string utf32result = utf8to32(twochars);
+    EXPECT_EQ (utf32result.size(), 2);
+}
+
+TEST(CPP11APITests, test_find_invalid)
+{
+    string utf_invalid = "\xe6\x97\xa5\xd1\x88\xfa";
+    auto invalid = find_invalid(utf_invalid);
+    EXPECT_EQ (invalid, 5);
+}
+
+TEST(CPP11APITests, test_is_valid)
+{
+    string utf_invalid = "\xe6\x97\xa5\xd1\x88\xfa";
+    bool bvalid = is_valid(utf_invalid);
+    EXPECT_FALSE (bvalid);
+    string utf8_with_surrogates = "\xe6\x97\xa5\xd1\x88\xf0\x9d\x84\x9e";
+    bvalid = is_valid(utf8_with_surrogates);
+    EXPECT_TRUE (bvalid);
+}
+
+TEST(CPP11APITests, test_replace_invalid)
+{
+    string 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(CPP11APITests, test_starts_with_bom)
+{
+    string byte_order_mark = {char(0xef), char(0xbb), char(0xbf)};
+    bool bbom = starts_with_bom(byte_order_mark);
+    EXPECT_TRUE (bbom);
+    string threechars = "\xf0\x90\x8d\x86\xe6\x97\xa5\xd1\x88";
+    bool no_bbom = starts_with_bom(threechars);
+    EXPECT_FALSE (no_bbom);
+}
+#endif  // C++ 11 or later