// Copyright 2018 Google LLC. // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file. #include "src/utils/SkUTF.h" #include "tests/Test.h" DEF_TEST(SkUTF_UTF16, reporter) { // Test non-basic-multilingual-plane unicode. static const SkUnichar gUni[] = { 0x10000, 0x18080, 0x20202, 0xFFFFF, 0x101234 }; for (SkUnichar uni : gUni) { uint16_t buf[2]; size_t count = SkUTF::ToUTF16(uni, buf); REPORTER_ASSERT(reporter, count == 2); size_t count2 = SkUTF::CountUTF16(buf, sizeof(buf)); REPORTER_ASSERT(reporter, count2 == 1); const uint16_t* ptr = buf; SkUnichar c = SkUTF::NextUTF16(&ptr, buf + SK_ARRAY_COUNT(buf)); REPORTER_ASSERT(reporter, c == uni); REPORTER_ASSERT(reporter, ptr - buf == 2); } } DEF_TEST(SkUTF_UTF8, reporter) { static const struct { const char* fUtf8; SkUnichar fUni; } gTest[] = { { "a", 'a' }, { "\x7f", 0x7f }, { "\xC2\x80", 0x80 }, { "\xC3\x83", (3 << 6) | 3 }, { "\xDF\xBF", 0x7ff }, { "\xE0\xA0\x80", 0x800 }, { "\xE0\xB0\xB8", 0xC38 }, { "\xE3\x83\x83", (3 << 12) | (3 << 6) | 3 }, { "\xEF\xBF\xBF", 0xFFFF }, { "\xF0\x90\x80\x80", 0x10000 }, { "\xF3\x83\x83\x83", (3 << 18) | (3 << 12) | (3 << 6) | 3 } }; for (auto test : gTest) { const char* p = test.fUtf8; const char* stop = p + strlen(p); int n = SkUTF::CountUTF8(p, strlen(p)); SkUnichar u1 = SkUTF::NextUTF8(&p, stop); REPORTER_ASSERT(reporter, n == 1); REPORTER_ASSERT(reporter, u1 == test.fUni); REPORTER_ASSERT(reporter, p - test.fUtf8 == (int)strlen(test.fUtf8)); } } #define ASCII_BYTE "X" #define CONTINUATION_BYTE "\xA1" #define LEADING_TWO_BYTE "\xC2" #define LEADING_THREE_BYTE "\xE1" #define LEADING_FOUR_BYTE "\xF0" #define INVALID_BYTE "\xFC" DEF_TEST(SkUTF_CountUTF8, r) { static const struct { int expectedCount; const char* utf8String; } testCases[] = { { 0, "" }, { 1, ASCII_BYTE }, { 2, ASCII_BYTE ASCII_BYTE }, { 1, LEADING_TWO_BYTE CONTINUATION_BYTE }, { 2, ASCII_BYTE LEADING_TWO_BYTE CONTINUATION_BYTE }, { 3, ASCII_BYTE ASCII_BYTE LEADING_TWO_BYTE CONTINUATION_BYTE }, { 1, LEADING_THREE_BYTE CONTINUATION_BYTE CONTINUATION_BYTE }, { 2, ASCII_BYTE LEADING_THREE_BYTE CONTINUATION_BYTE CONTINUATION_BYTE }, { 3, ASCII_BYTE ASCII_BYTE LEADING_THREE_BYTE CONTINUATION_BYTE CONTINUATION_BYTE }, { 1, LEADING_FOUR_BYTE CONTINUATION_BYTE CONTINUATION_BYTE CONTINUATION_BYTE }, { 2, ASCII_BYTE LEADING_FOUR_BYTE CONTINUATION_BYTE CONTINUATION_BYTE CONTINUATION_BYTE }, { 3, ASCII_BYTE ASCII_BYTE LEADING_FOUR_BYTE CONTINUATION_BYTE CONTINUATION_BYTE CONTINUATION_BYTE }, { -1, INVALID_BYTE }, { -1, INVALID_BYTE CONTINUATION_BYTE }, { -1, INVALID_BYTE CONTINUATION_BYTE CONTINUATION_BYTE }, { -1, INVALID_BYTE CONTINUATION_BYTE CONTINUATION_BYTE CONTINUATION_BYTE }, { -1, LEADING_TWO_BYTE }, { -1, CONTINUATION_BYTE }, { -1, CONTINUATION_BYTE CONTINUATION_BYTE }, { -1, LEADING_THREE_BYTE CONTINUATION_BYTE }, { -1, CONTINUATION_BYTE CONTINUATION_BYTE CONTINUATION_BYTE }, { -1, LEADING_FOUR_BYTE CONTINUATION_BYTE }, { -1, CONTINUATION_BYTE CONTINUATION_BYTE CONTINUATION_BYTE CONTINUATION_BYTE }, }; for (auto testCase : testCases) { const char* str = testCase.utf8String; REPORTER_ASSERT(r, testCase.expectedCount == SkUTF::CountUTF8(str, strlen(str))); } } DEF_TEST(SkUTF_NextUTF8_ToUTF8, r) { struct { SkUnichar expected; const char* utf8String; } testCases[] = { { -1, INVALID_BYTE }, { -1, "" }, { 0x0058, ASCII_BYTE }, { 0x00A1, LEADING_TWO_BYTE CONTINUATION_BYTE }, { 0x1861, LEADING_THREE_BYTE CONTINUATION_BYTE CONTINUATION_BYTE }, { 0x010330, LEADING_FOUR_BYTE "\x90\x8C\xB0" }, }; for (auto testCase : testCases) { const char* str = testCase.utf8String; SkUnichar uni = SkUTF::NextUTF8(&str, str + strlen(str)); REPORTER_ASSERT(r, str == testCase.utf8String + strlen(testCase.utf8String)); REPORTER_ASSERT(r, uni == testCase.expected); char buff[5] = {0, 0, 0, 0, 0}; size_t len = SkUTF::ToUTF8(uni, buff); if (buff[len] != 0) { ERRORF(r, "unexpected write"); continue; } if (uni == -1) { REPORTER_ASSERT(r, len == 0); continue; } if (len == 0) { ERRORF(r, "unexpected failure."); continue; } if (len > 4) { ERRORF(r, "wrote too much"); continue; } str = testCase.utf8String; REPORTER_ASSERT(r, len == strlen(buff)); REPORTER_ASSERT(r, len == strlen(str)); REPORTER_ASSERT(r, 0 == strcmp(str, buff)); } } #undef ASCII_BYTE #undef CONTINUATION_BYTE #undef LEADING_TWO_BYTE #undef LEADING_THREE_BYTE #undef LEADING_FOUR_BYTE #undef INVALID_BYTE