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diff --git a/graphics/asymptote/LspCpp/third_party/utfcpp/tests/test_unchecked_api.h b/graphics/asymptote/LspCpp/third_party/utfcpp/tests/test_unchecked_api.h
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+#ifndef UTF8_FOR_CPP_TEST_UNCHECKED_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
+#define UTF8_FOR_CPP_TEST_UNCHECKED_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
+
+#include "utf8/unchecked.h"
+
+#include <string>
+#include <vector>
+
+using namespace std;
+
+TEST(UnCheckedAPITests, test_append)
+{
+ unsigned char u[5] = {0,0,0,0,0};
+ utf8::unchecked::append(0x0448, u);
+ EXPECT_EQ (u[0], 0xd1);
+ EXPECT_EQ (u[1], 0x88);
+ EXPECT_EQ (u[2], 0);
+ EXPECT_EQ (u[3], 0);
+ EXPECT_EQ (u[4], 0);
+
+ utf8::unchecked::append(0x65e5, u);
+ EXPECT_EQ (u[0], 0xe6);
+ EXPECT_EQ (u[1], 0x97);
+ EXPECT_EQ (u[2], 0xa5);
+ EXPECT_EQ (u[3], 0);
+ EXPECT_EQ (u[4], 0);
+
+ utf8::unchecked::append(0x3044, u);
+ EXPECT_EQ (u[0], 0xe3);
+ EXPECT_EQ (u[1], 0x81);
+ EXPECT_EQ (u[2], 0x84);
+ EXPECT_EQ (u[3], 0);
+ EXPECT_EQ (u[4], 0);
+
+ utf8::unchecked::append(0x10346, u);
+ EXPECT_EQ (u[0], 0xf0);
+ EXPECT_EQ (u[1], 0x90);
+ EXPECT_EQ (u[2], 0x8d);
+ EXPECT_EQ (u[3], 0x86);
+ EXPECT_EQ (u[4], 0);
+}
+
+TEST(UnCheckedAPITests, test_next)
+{
+ const char* twochars = "\xe6\x97\xa5\xd1\x88";
+ const char* w = twochars;
+ unsigned int cp = utf8::unchecked::next(w);
+ EXPECT_EQ (cp, 0x65e5);
+ EXPECT_EQ (w, twochars + 3);
+
+ const char* threechars = "\xf0\x90\x8d\x86\xe6\x97\xa5\xd1\x88";
+ w = threechars;
+
+ cp = utf8::unchecked::next(w);
+ EXPECT_EQ (cp, 0x10346);
+ EXPECT_EQ (w, threechars + 4);
+
+ cp = utf8::unchecked::next(w);
+ EXPECT_EQ (cp, 0x65e5);
+ EXPECT_EQ (w, threechars + 7);
+
+ cp = utf8::unchecked::next(w);
+ EXPECT_EQ (cp, 0x0448);
+ EXPECT_EQ (w, threechars + 9);
+}
+
+TEST(UnCheckedAPITests, test_peek_next)
+{
+ const char* const cw = "\xe6\x97\xa5\xd1\x88";
+ unsigned int cp = utf8::unchecked::peek_next(cw);
+ EXPECT_EQ (cp, 0x65e5);
+}
+
+TEST(UnCheckedAPITests, test_prior)
+{
+ const char* twochars = "\xe6\x97\xa5\xd1\x88";
+ const char* w = twochars + 3;
+ unsigned int cp = utf8::unchecked::prior (w);
+ EXPECT_EQ (cp, 0x65e5);
+ EXPECT_EQ (w, twochars);
+
+ const char* threechars = "\xf0\x90\x8d\x86\xe6\x97\xa5\xd1\x88";
+ w = threechars + 9;
+ cp = utf8::unchecked::prior(w);
+ EXPECT_EQ (cp, 0x0448);
+ EXPECT_EQ (w, threechars + 7);
+ cp = utf8::unchecked::prior(w);
+ EXPECT_EQ (cp, 0x65e5);
+ EXPECT_EQ (w, threechars + 4);
+ cp = utf8::unchecked::prior(w);
+ EXPECT_EQ (cp, 0x10346);
+ EXPECT_EQ (w, threechars);
+}
+
+TEST(UnCheckedAPITests, test_advance)
+{
+ const char* threechars = "\xf0\x90\x8d\x86\xe6\x97\xa5\xd1\x88";
+ const char* w = threechars;
+ utf8::unchecked::advance(w, 2);
+ EXPECT_EQ(w, threechars + 7);
+ utf8::unchecked::advance(w, -2);
+ EXPECT_EQ(w, threechars);
+ utf8::unchecked::advance(w, 3);
+ EXPECT_EQ(w, threechars + 9);
+ utf8::unchecked::advance(w, -2);
+ EXPECT_EQ(w, threechars + 4);
+ utf8::unchecked::advance(w, -1);
+ EXPECT_EQ(w, threechars);
+}
+
+TEST(UnCheckedAPITests, test_distance)
+{
+ const char* twochars = "\xe6\x97\xa5\xd1\x88";
+ size_t dist = static_cast<size_t>(utf8::unchecked::distance(twochars, twochars + 5));
+ EXPECT_EQ (dist, 2);
+}
+
+TEST(UnCheckedAPITests, test_utf32to8)
+{
+ unsigned int utf32string[] = {0x448, 0x65E5, 0x10346, 0};
+ string utf8result;
+ utf8::unchecked::utf32to8(utf32string, utf32string + 3, back_inserter(utf8result));
+ EXPECT_EQ (utf8result.size(), 9);
+}
+
+TEST(UnCheckedAPITests, test_utf8to32)
+{
+ const char* twochars = "\xe6\x97\xa5\xd1\x88";
+ vector<unsigned int> utf32result;
+ utf8::unchecked::utf8to32(twochars, twochars + 5, back_inserter(utf32result));
+ EXPECT_EQ (utf32result.size(), 2);
+}
+
+TEST(UnCheckedAPITests, test_utf16to8)
+{
+ unsigned short utf16string[] = {0x41, 0x0448, 0x65e5, 0xd834, 0xdd1e};
+ string utf8result;
+ utf8::unchecked::utf16to8(utf16string, utf16string + 5, back_inserter(utf8result));
+ EXPECT_EQ (utf8result.size(), 10);
+}
+
+TEST(UnCheckedAPITests, test_utf8to16)
+{
+ char utf8_with_surrogates[] = "\xe6\x97\xa5\xd1\x88\xf0\x9d\x84\x9e";
+ vector <unsigned short> utf16result;
+ utf8::unchecked::utf8to16(utf8_with_surrogates, utf8_with_surrogates + 9, back_inserter(utf16result));
+ EXPECT_EQ (utf16result.size(), 4);
+ EXPECT_EQ (utf16result[2], 0xd834);
+ EXPECT_EQ (utf16result[3], 0xdd1e);
+}
+
+TEST(UnCheckedAPITests, test_replace_invalid)
+{
+ char invalid_sequence[] = "a\x80\xe0\xa0\xc0\xaf\xed\xa0\x80z";
+ vector<char> replace_invalid_result;
+ utf8::unchecked::replace_invalid (invalid_sequence, invalid_sequence + sizeof(invalid_sequence), std::back_inserter(replace_invalid_result), '?');
+ bool bvalid = utf8::is_valid(replace_invalid_result.begin(), replace_invalid_result.end());
+ EXPECT_TRUE (bvalid);
+ const char fixed_invalid_sequence[] = "a????z";
+ EXPECT_EQ (sizeof(fixed_invalid_sequence), replace_invalid_result.size());
+ EXPECT_TRUE (std::equal(replace_invalid_result.begin(), replace_invalid_result.begin() + sizeof(fixed_invalid_sequence), fixed_invalid_sequence));
+}
+
+#endif