Added unittests for invalid ascii control chars

test/unittest/readertest.cpp

@@ -725,6 +725,8 @@ TEST(Reader, ParseString_Error) {
 
     // Malform ASCII sequence
     TEST_STRINGENCODING_ERROR(ASCII<>, UTF8<>, char, ARRAY('[', '\"', char(0x80u), '\"', ']', '\0'));
+    TEST_STRINGENCODING_ERROR(ASCII<>, UTF8<>, char, ARRAY('[', '\"', char(0x01u), '\"', ']', '\0'));
+    TEST_STRINGENCODING_ERROR(ASCII<>, UTF8<>, char, ARRAY('[', '\"', char(0x1Cu), '\"', ']', '\0'));
 
 #undef ARRAY
 #undef TEST_STRINGARRAY_ERROR

test/unittest/writertest.cpp

@@ -401,6 +401,16 @@ TEST(Writer, InvalidEncoding) {
         static const UTF32<>::Ch s[] = { 0x110000, 0 }; // Out of U+0000 to U+10FFFF
         EXPECT_FALSE(writer.String(s));
     }
+
+    // Fail in decoding invalid ASCII control bytes
+    {
+        GenericStringBuffer<UTF16<> > buffer;
+        Writer<GenericStringBuffer<UTF16<> >, UTF8<>, UTF16<> > writer(buffer);
+        writer.StartArray();
+        EXPECT_FALSE(writer.String("\x01"));
+        EXPECT_FALSE(writer.String("\x1C"));
+        writer.EndArray();
+    }
 }
 
 TEST(Writer, ValidateEncoding) {