diff options
Diffstat (limited to 'js/src/jsapi-tests/testDeflateStringToUTF8Buffer.cpp')
| -rw-r--r-- | js/src/jsapi-tests/testDeflateStringToUTF8Buffer.cpp | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/js/src/jsapi-tests/testDeflateStringToUTF8Buffer.cpp b/js/src/jsapi-tests/testDeflateStringToUTF8Buffer.cpp new file mode 100644 index 0000000000..b451fc4e2b --- /dev/null +++ b/js/src/jsapi-tests/testDeflateStringToUTF8Buffer.cpp @@ -0,0 +1,162 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "jsapi-tests/tests.h" + +using namespace JS; + +BEGIN_TEST(test_DeflateStringToUTF8Buffer) { + JSString* str; + JSLinearString* linearStr; + + // DeflateStringToUTF8Buffer does not write a null terminator, so the byte + // following the last byte written to the |actual| buffer should retain + // the value it held before the call to DeflateStringToUTF8Buffer, which is + // initialized to 0x1. + + char actual[100]; + auto span = mozilla::Span(actual); + + // Test with an ASCII string, which calls JSLinearString::latin1Chars + // to retrieve the characters from the string and generates UTF-8 output + // that is identical to the ASCII input. + + str = JS_NewStringCopyZ(cx, "Ohai"); // { 0x4F, 0x68, 0x61, 0x69 } + MOZ_RELEASE_ASSERT(str); + linearStr = JS_EnsureLinearString(cx, str); + + { + const char expected[] = {0x4F, 0x68, 0x61, 0x69, 0x1}; + memset(actual, 0x1, 100); + size_t dstlen = JS::DeflateStringToUTF8Buffer(linearStr, span); + CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0); + CHECK_EQUAL(dstlen, 4u); + } + + { + const char expected[] = {0x4F, 0x68, 0x61, 0x1}; + memset(actual, 0x1, 100); + size_t dstlen = JS::DeflateStringToUTF8Buffer(linearStr, span.To(3)); + CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0); + CHECK_EQUAL(dstlen, 3u); + } + + { + const unsigned char expected[] = {0x1}; + memset(actual, 0x1, 100); + size_t dstlen = JS::DeflateStringToUTF8Buffer(linearStr, span.To(0)); + CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0); + CHECK_EQUAL(dstlen, 0u); + } + + // Test with a Latin-1 string, which calls JSLinearString::latin1Chars + // like with the ASCII string but generates UTF-8 output that is different + // from the ASCII input. + + str = JS_NewUCStringCopyZ(cx, u"\xD3\x68\xE3\xEF"); // u"Óhãï" + MOZ_RELEASE_ASSERT(str); + linearStr = JS_EnsureLinearString(cx, str); + + { + const unsigned char expected[] = {0xC3, 0x93, 0x68, 0xC3, + 0xA3, 0xC3, 0xAF, 0x1}; + memset(actual, 0x1, 100); + JS::DeflateStringToUTF8Buffer(linearStr, span); + CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0); + } + + { + const unsigned char expected[] = {0xC3, 0x93, 0x68, 0xC3, + 0xA3, 0xC3, 0xAF, 0x1}; + memset(actual, 0x1, 100); + size_t dstlen = JS::DeflateStringToUTF8Buffer(linearStr, span.To(7)); + CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0); + CHECK_EQUAL(dstlen, 7u); + } + + { + // Specify a destination buffer length of 3. That's exactly enough + // space to encode the first two characters, which takes three bytes. + const unsigned char expected[] = {0xC3, 0x93, 0x68, 0x1}; + memset(actual, 0x1, 100); + size_t dstlen = JS::DeflateStringToUTF8Buffer(linearStr, span.To(3)); + CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0); + CHECK_EQUAL(dstlen, 3u); + } + + { + // Specify a destination buffer length of 4. That's only enough space + // to encode the first two characters, which takes three bytes, because + // the third character would take another two bytes. + const unsigned char expected[] = {0xC3, 0x93, 0x68, 0x1}; + memset(actual, 0x1, 100); + size_t dstlen = JS::DeflateStringToUTF8Buffer(linearStr, span.To(4)); + CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0); + CHECK_EQUAL(dstlen, 3u); + } + + { + const unsigned char expected[] = {0x1}; + memset(actual, 0x1, 100); + size_t dstlen = JS::DeflateStringToUTF8Buffer(linearStr, span.To(0)); + CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0); + CHECK_EQUAL(dstlen, 0u); + } + + // Test with a UTF-16 string, which calls JSLinearString::twoByteChars + // to retrieve the characters from the string. + + str = JS_NewUCStringCopyZ(cx, u"\x038C\x0068\x0203\x0457"); // u"Όhȃї" + MOZ_RELEASE_ASSERT(str); + linearStr = JS_EnsureLinearString(cx, str); + + { + const unsigned char expected[] = {0xCE, 0x8C, 0x68, 0xC8, + 0x83, 0xD1, 0x97, 0x1}; + memset(actual, 0x1, 100); + JS::DeflateStringToUTF8Buffer(linearStr, span); + CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0); + } + + { + const unsigned char expected[] = {0xCE, 0x8C, 0x68, 0xC8, + 0x83, 0xD1, 0x97, 0x1}; + memset(actual, 0x1, 100); + size_t dstlen = JS::DeflateStringToUTF8Buffer(linearStr, span.To(7)); + CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0); + CHECK_EQUAL(dstlen, 7u); + } + + { + // Specify a destination buffer length of 3. That's exactly enough + // space to encode the first two characters, which takes three bytes. + const unsigned char expected[] = {0xCE, 0x8C, 0x68, 0x1}; + memset(actual, 0x1, 100); + size_t dstlen = JS::DeflateStringToUTF8Buffer(linearStr, span.To(3)); + CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0); + CHECK_EQUAL(dstlen, 3u); + } + + { + // Specify a destination buffer length of 4. That's only enough space + // to encode the first two characters, which takes three bytes, because + // the third character would take another two bytes. + const unsigned char expected[] = {0xCE, 0x8C, 0x68, 0x1}; + memset(actual, 0x1, 100); + size_t dstlen = JS::DeflateStringToUTF8Buffer(linearStr, span.To(4)); + CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0); + CHECK_EQUAL(dstlen, 3u); + } + + { + const unsigned char expected[] = {0x1}; + memset(actual, 0x1, 100); + size_t dstlen = JS::DeflateStringToUTF8Buffer(linearStr, span.To(0)); + CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0); + CHECK_EQUAL(dstlen, 0u); + } + + return true; +} +END_TEST(test_DeflateStringToUTF8Buffer) |