Add m-esr52 at 52.6.0

1 files changed, 286 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..3486656857
--- /dev/null
+++ b/js/src/jsapi-tests/testDeflateStringToUTF8Buffer.cpp
@@ -0,0 +1,286 @@
+/* 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;
+    JSFlatString* flatStr;
+
+    // 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];
+    mozilla::RangedPtr<char> range = mozilla::RangedPtr<char>(actual, 100);
+
+    // Test with an ASCII string, which calls JSFlatString::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);
+    flatStr = JS_FlattenString(cx, str);
+
+    {
+        const char expected[] = { 0x4F, 0x68, 0x61, 0x69, 0x1 };
+        memset(actual, 0x1, 100);
+        JS::DeflateStringToUTF8Buffer(flatStr, range);
+        CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0);
+    }
+
+    {
+        size_t dstlen = 4;
+        const char expected[] = { 0x4F, 0x68, 0x61, 0x69, 0x1 };
+        memset(actual, 0x1, 100);
+        JS::DeflateStringToUTF8Buffer(flatStr, range, &dstlen);
+        CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0);
+        CHECK_EQUAL(dstlen, 4u);
+    }
+
+    {
+        size_t numchars = 0;
+        const char expected[] = { 0x4F, 0x68, 0x61, 0x69, 0x1 };
+        memset(actual, 0x1, 100);
+        JS::DeflateStringToUTF8Buffer(flatStr, range, nullptr, &numchars);
+        CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0);
+        CHECK_EQUAL(numchars, 4u);
+    }
+
+    {
+        size_t dstlen = 4;
+        size_t numchars = 0;
+        const char expected[] = { 0x4F, 0x68, 0x61, 0x69, 0x1 };
+        memset(actual, 0x1, 100);
+        JS::DeflateStringToUTF8Buffer(flatStr, range, &dstlen, &numchars);
+        CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0);
+        CHECK_EQUAL(dstlen, 4u);
+        CHECK_EQUAL(numchars, 4u);
+    }
+
+    {
+        size_t dstlen = 3;
+        size_t numchars = 0;
+        const char expected[] = { 0x4F, 0x68, 0x61, 0x1 };
+        memset(actual, 0x1, 100);
+        JS::DeflateStringToUTF8Buffer(flatStr, range, &dstlen, &numchars);
+        CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0);
+        CHECK_EQUAL(dstlen, 3u);
+        CHECK_EQUAL(numchars, 3u);
+    }
+
+    {
+        size_t dstlen = 100;
+        size_t numchars = 0;
+        const char expected[] = { 0x4F, 0x68, 0x61, 0x69, 0x1 };
+        memset(actual, 0x1, 100);
+        JS::DeflateStringToUTF8Buffer(flatStr, range, &dstlen, &numchars);
+        CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0);
+        CHECK_EQUAL(dstlen, 4u);
+        CHECK_EQUAL(numchars, 4u);
+    }
+
+    {
+        size_t dstlen = 0;
+        size_t numchars = 0;
+        const unsigned char expected[] = { 0x1 };
+        memset(actual, 0x1, 100);
+        JS::DeflateStringToUTF8Buffer(flatStr, range, &dstlen, &numchars);
+        CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0);
+        CHECK_EQUAL(dstlen, 0u);
+        CHECK_EQUAL(numchars, 0u);
+    }
+
+    // Test with a Latin-1 string, which calls JSFlatString::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);
+    flatStr = JS_FlattenString(cx, str);
+
+    {
+        const unsigned char expected[] = { 0xC3, 0x93, 0x68, 0xC3, 0xA3, 0xC3, 0xAF, 0x1 };
+        memset(actual, 0x1, 100);
+        JS::DeflateStringToUTF8Buffer(flatStr, range);
+        CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0);
+    }
+
+    {
+        size_t dstlen = 7;
+        const unsigned char expected[] = { 0xC3, 0x93, 0x68, 0xC3, 0xA3, 0xC3, 0xAF, 0x1 };
+        memset(actual, 0x1, 100);
+        JS::DeflateStringToUTF8Buffer(flatStr, range, &dstlen);
+        CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0);
+        CHECK_EQUAL(dstlen, 7u);
+    }
+
+    {
+        size_t numchars = 0;
+        const unsigned char expected[] = { 0xC3, 0x93, 0x68, 0xC3, 0xA3, 0xC3, 0xAF, 0x1 };
+        memset(actual, 0x1, 100);
+        JS::DeflateStringToUTF8Buffer(flatStr, range, nullptr, &numchars);
+        CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0);
+        CHECK_EQUAL(numchars, 4u);
+    }
+
+    {
+        size_t dstlen = 7;
+        size_t numchars = 0;
+        const unsigned char expected[] = { 0xC3, 0x93, 0x68, 0xC3, 0xA3, 0xC3, 0xAF, 0x1 };
+        memset(actual, 0x1, 100);
+        JS::DeflateStringToUTF8Buffer(flatStr, range, &dstlen, &numchars);
+        CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0);
+        CHECK_EQUAL(dstlen, 7u);
+        CHECK_EQUAL(numchars, 4u);
+    }
+
+    {
+        // Specify a destination buffer length of 3.  That's exactly enough
+        // space to encode the first two characters, which takes three bytes.
+        size_t dstlen = 3;
+        size_t numchars = 0;
+        const unsigned char expected[] = { 0xC3, 0x93, 0x68, 0x1 };
+        memset(actual, 0x1, 100);
+        JS::DeflateStringToUTF8Buffer(flatStr, range, &dstlen, &numchars);
+        CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0);
+        CHECK_EQUAL(dstlen, 3u);
+        CHECK_EQUAL(numchars, 2u);
+    }
+
+    {
+        // 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.
+        size_t dstlen = 4;
+        size_t numchars = 0;
+        const unsigned char expected[] = { 0xC3, 0x93, 0x68, 0x1 };
+        memset(actual, 0x1, 100);
+        JS::DeflateStringToUTF8Buffer(flatStr, range, &dstlen, &numchars);
+        CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0);
+        CHECK_EQUAL(dstlen, 3u);
+        CHECK_EQUAL(numchars, 2u);
+    }
+
+    {
+        size_t dstlen = 100;
+        size_t numchars = 0;
+        const unsigned char expected[] = { 0xC3, 0x93, 0x68, 0xC3, 0xA3, 0xC3, 0xAF, 0x1 };
+        memset(actual, 0x1, 100);
+        JS::DeflateStringToUTF8Buffer(flatStr, range, &dstlen, &numchars);
+        CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0);
+        CHECK_EQUAL(dstlen, 7u);
+        CHECK_EQUAL(numchars, 4u);
+    }
+
+    {
+        size_t dstlen = 0;
+        size_t numchars = 0;
+        const unsigned char expected[] = { 0x1 };
+        memset(actual, 0x1, 100);
+        JS::DeflateStringToUTF8Buffer(flatStr, range, &dstlen, &numchars);
+        CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0);
+        CHECK_EQUAL(dstlen, 0u);
+        CHECK_EQUAL(numchars, 0u);
+    }
+
+    // Test with a UTF-16 string, which calls JSFlatString::twoByteChars
+    // to retrieve the characters from the string.
+
+    str = JS_NewUCStringCopyZ(cx, u"\x038C\x0068\x0203\x0457"); // u"Όhȃї"
+    MOZ_RELEASE_ASSERT(str);
+    flatStr = JS_FlattenString(cx, str);
+
+    {
+        const unsigned char expected[] = { 0xCE, 0x8C, 0x68, 0xC8, 0x83, 0xD1, 0x97, 0x1 };
+        memset(actual, 0x1, 100);
+        JS::DeflateStringToUTF8Buffer(flatStr, range);
+        CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0);
+    }
+
+    {
+        size_t dstlen = 7;
+        const unsigned char expected[] = { 0xCE, 0x8C, 0x68, 0xC8, 0x83, 0xD1, 0x97, 0x1 };
+        memset(actual, 0x1, 100);
+        JS::DeflateStringToUTF8Buffer(flatStr, range, &dstlen);
+        CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0);
+        CHECK_EQUAL(dstlen, 7u);
+    }
+
+    {
+        size_t numchars = 0;
+        const unsigned char expected[] = { 0xCE, 0x8C, 0x68, 0xC8, 0x83, 0xD1, 0x97, 0x1 };
+        memset(actual, 0x1, 100);
+        JS::DeflateStringToUTF8Buffer(flatStr, range, nullptr, &numchars);
+        CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0);
+        CHECK_EQUAL(numchars, 4u);
+    }
+
+    {
+        size_t dstlen = 7;
+        size_t numchars = 0;
+        const unsigned char expected[] = { 0xCE, 0x8C, 0x68, 0xC8, 0x83, 0xD1, 0x97, 0x1 };
+        memset(actual, 0x1, 100);
+        JS::DeflateStringToUTF8Buffer(flatStr, range, &dstlen, &numchars);
+        CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0);
+        CHECK_EQUAL(dstlen, 7u);
+        CHECK_EQUAL(numchars, 4u);
+    }
+
+    {
+        // Specify a destination buffer length of 3.  That's exactly enough
+        // space to encode the first two characters, which takes three bytes.
+        size_t dstlen = 3;
+        size_t numchars = 0;
+        const unsigned char expected[] = { 0xCE, 0x8C, 0x68, 0x1 };
+        memset(actual, 0x1, 100);
+        JS::DeflateStringToUTF8Buffer(flatStr, range, &dstlen, &numchars);
+        CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0);
+        CHECK_EQUAL(dstlen, 3u);
+        CHECK_EQUAL(numchars, 2u);
+    }
+
+    {
+        // 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.
+        size_t dstlen = 4;
+        size_t numchars = 0;
+        const unsigned char expected[] = { 0xCE, 0x8C, 0x68, 0x1 };
+        memset(actual, 0x1, 100);
+        JS::DeflateStringToUTF8Buffer(flatStr, range, &dstlen, &numchars);
+        CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0);
+        CHECK_EQUAL(dstlen, 3u);
+        CHECK_EQUAL(numchars, 2u);
+    }
+
+    {
+        size_t dstlen = 100;
+        size_t numchars = 0;
+        const unsigned char expected[] = { 0xCE, 0x8C, 0x68, 0xC8, 0x83, 0xD1, 0x97, 0x1 };
+        memset(actual, 0x1, 100);
+        JS::DeflateStringToUTF8Buffer(flatStr, range, &dstlen, &numchars);
+        CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0);
+        CHECK_EQUAL(dstlen, 7u);
+        CHECK_EQUAL(numchars, 4u);
+    }
+
+    {
+        size_t dstlen = 0;
+        size_t numchars = 0;
+        const unsigned char expected[] = { 0x1 };
+        memset(actual, 0x1, 100);
+        JS::DeflateStringToUTF8Buffer(flatStr, range, &dstlen, &numchars);
+        CHECK_EQUAL(memcmp(actual, expected, sizeof(expected)), 0);
+        CHECK_EQUAL(dstlen, 0u);
+        CHECK_EQUAL(numchars, 0u);
+    }
+
+    return true;
+}
+END_TEST(test_DeflateStringToUTF8Buffer)