1 files changed, 43 insertions, 1 deletions
diff --git a/Swiften/Base/UnitTest/StringTest.cpp b/Swiften/Base/UnitTest/StringTest.cpp
index e2e1665..889c9c7 100644
--- a/Swiften/Base/UnitTest/StringTest.cpp
+++ b/Swiften/Base/UnitTest/StringTest.cpp
@@ -12,9 +12,11 @@
 #include <Swiften/Base/Platform.h>
 #include <Swiften/Base/String.h>
 
+#include <boost/format.hpp>
+
 using namespace Swift;
 
-class StringTest : public CppUnit::TestFixture {
+ class StringTest : public CppUnit::TestFixture {
         CPPUNIT_TEST_SUITE(StringTest);
         CPPUNIT_TEST(testGetUnicodeCodePoints);
         CPPUNIT_TEST(testGetSplittedAtFirst);
@@ -25,6 +27,8 @@ class StringTest : public CppUnit::TestFixture {
         CPPUNIT_TEST(testReplaceAll_LastChar);
         CPPUNIT_TEST(testReplaceAll_ConsecutiveChars);
         CPPUNIT_TEST(testReplaceAll_MatchingReplace);
+        CPPUNIT_TEST(testIsValidXMPPCharacter);
+        CPPUNIT_TEST(testSanitizeXMPPString);
         CPPUNIT_TEST(testSplit);
 #ifdef SWIFTEN_PLATFORM_WINDOWS
         CPPUNIT_TEST(testConvertWStringToString);
@@ -107,6 +111,44 @@ class StringTest : public CppUnit::TestFixture {
             CPPUNIT_ASSERT_EQUAL(std::string("abbbc"), testling);
         }
 
+        void testIsValidXMPPCharacter() {
+            const std::uint32_t testCharacters[] = {
+                0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
+                0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F,
+                0x20, 0x7F, 0x80, 0x84, 0x85, 0xFF };
+            const auto testLength = sizeof(testCharacters) / sizeof(std::uint32_t);
+            const bool expectedValid[] = {
+                0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0,
+                0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+                1, 0, 0, 0, 1, 1 };
+            static_assert(testLength == sizeof(expectedValid), "size of test data must match");
+
+            for (std::size_t i = 0; i != testLength; ++i) {
+                const auto c = testCharacters[i];
+                CPPUNIT_ASSERT_EQUAL_MESSAGE(boost::str(boost::format("While testing at idx=%d: 0x%02x") % i % c), expectedValid[i], String::isValidXMPPCharacter(c));
+            }
+        }
+
+        void testSanitizeXMPPString() {
+            std::vector<std::pair<std::string, std::string>> testData = {
+                { "\0", "" },
+                { std::string("\0\t", 3), "\t" },
+                { "", "" },
+                { std::string("\0", 1) , std::string() },
+                { std::string("\0blah\0", 6) , std::string("blah", 4) },
+                { "z\xC3\x9F\xE6\xB0\xB4\xF0\x9D\x84\x8B" , "z\xC3\x9F\xE6\xB0\xB4\xF0\x9D\x84\x8B" }, // or in u8 notation: u8"z\u00df\u6c34\U0001d10b"
+                { "\x7FT\t\x0c\xff\xfeT", "T\tT" },
+                { "\x01Q\x0BW\x81T", "QWT" },
+                { "\xF0\x9F\x98\x83" "ABC" "\xE2\xBE\xA6", "\xF0\x9F\x98\x83" "ABC" "\xE2\xBE\xA6" }
+            };
+
+            for (std::size_t i = 0; i != testData.size(); ++i) {
+                const auto & t = testData[i];
+                const auto actual = String::sanitizeXMPPString(t.first);
+                CPPUNIT_ASSERT_EQUAL_MESSAGE(boost::str(boost::format("While testing string idx=%d") % i), std::string(actual), t.second);
+            }
+        }
+
         void testSplit() {
             std::vector<std::string> result = String::split("abc def ghi", ' ');