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/***
* Copyright (C) Microsoft. All rights reserved.
* Licensed under the MIT license. See LICENSE.txt file in the project root for full license information.
*
* =+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
* negative_parsing_tests.cpp
*
* Negative tests for JSON parsing.
*
* =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
****/
#include "cpprest/json.h"
#include "unittestpp.h"
using namespace web;
using namespace utility;
namespace tests
{
namespace functional
{
namespace json_tests
{
template<typename T>
void verify_json_throws(T& parseString)
{
std::error_code ec;
VERIFY_THROWS(json::value::parse(parseString), json::json_exception);
auto value = json::value::parse(parseString, ec);
VERIFY_IS_TRUE(ec.value() > 0);
VERIFY_IS_TRUE(value.is_null());
}
SUITE(negative_parsing_tests)
{
TEST(string_t)
{
verify_json_throws(U("\"\\k\""));
verify_json_throws(U("\" \" \""));
verify_json_throws(U("\"\\u23A\""));
verify_json_throws(U("\"\\uXY1A\""));
verify_json_throws(U("\"asdf"));
verify_json_throws(U("\\asdf"));
verify_json_throws(U("\"\"\"\""));
// '\', '"', and control characters must be escaped (0x1F and below).
verify_json_throws(U("\"\\\""));
verify_json_throws(U("\""));
utility::string_t str(U("\""));
str.append(1, 0x1F);
str.append(U("\""));
verify_json_throws(str);
}
TEST(numbers)
{
verify_json_throws(U("-"));
verify_json_throws(U("-."));
verify_json_throws(U("-e1"));
verify_json_throws(U("-1e"));
verify_json_throws(U("+1.1"));
verify_json_throws(U("1.1 E"));
verify_json_throws(U("1.1E-"));
verify_json_throws(U("1.1E.1"));
verify_json_throws(U("1.1E1.1"));
verify_json_throws(U("001.1"));
verify_json_throws(U("-.100"));
verify_json_throws(U("-.001"));
verify_json_throws(U(".1"));
verify_json_throws(U("0.1.1"));
}
// TFS 535589
void parse_help(utility::string_t str)
{
utility::stringstream_t ss1;
ss1 << str;
verify_json_throws(ss1);
}
TEST(objects)
{
verify_json_throws(U("}"));
parse_help(U("{"));
parse_help(U("{ 1, 10 }"));
parse_help(U("{ : }"));
parse_help(U("{ \"}"));
verify_json_throws(U("{"));
verify_json_throws(U("{ 1"));
verify_json_throws(U("{ \"}"));
verify_json_throws(U("{\"2\":"));
verify_json_throws(U("{\"2\":}"));
verify_json_throws(U("{\"2\": true"));
verify_json_throws(U("{\"2\": true false"));
verify_json_throws(U("{\"2\": true :false"));
verify_json_throws(U("{\"2\": false,}"));
}
TEST(arrays)
{
verify_json_throws(U("]"));
verify_json_throws(U("["));
verify_json_throws(U("[ 1"));
verify_json_throws(U("[ 1,"));
verify_json_throws(U("[ 1,]"));
verify_json_throws(U("[ 1 2]"));
verify_json_throws(U("[ \"1\" : 2]"));
parse_help(U("[,]"));
parse_help(U("[ \"]"));
parse_help(U("[\"2\", false,]"));
}
TEST(literals_not_lower_case)
{
verify_json_throws(U("NULL"));
verify_json_throws(U("FAlse"));
verify_json_throws(U("TRue"));
}
TEST(incomplete_literals)
{
verify_json_throws(U("nul"));
verify_json_throws(U("fal"));
verify_json_throws(U("tru"));
}
// TFS#501321
TEST(exception_string)
{
utility::string_t json_ip_str = U("");
verify_json_throws(json_ip_str);
}
TEST(boundary_chars)
{
utility::string_t str(U("\""));
str.append(1, 0x1F);
str.append(U("\""));
parse_help(str);
}
TEST(stream_left_over_chars)
{
std::stringbuf buf;
buf.sputn("[false]false", 12);
std::istream stream(&buf);
verify_json_throws(stream);
}
// Test using Windows only API.
#ifdef _WIN32
TEST(wstream_left_over_chars)
{
std::wstringbuf buf;
buf.sputn(L"[false]false", 12);
std::wistream stream(&buf);
verify_json_throws(stream);
}
#endif
void garbage_impl(wchar_t ch)
{
utility::string_t ss(U("{\"a\" : 10, \"b\":"));
std::random_device rd;
std::mt19937 eng(rd());
std::uniform_int_distribution<unsigned int> dist(0, ch);
for (int i = 0; i < 2500; i++)
ss.push_back(static_cast<char_t>(dist(eng)));
verify_json_throws(ss);
}
TEST(garbage_1) { garbage_impl(0x7F); }
TEST(garbage_2) { garbage_impl(0xFF); }
TEST(garbage_3) { garbage_impl(0xFFFF); }
}
} // namespace json_tests
} // namespace functional
} // namespace tests
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