pointer.cpp
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//
// Copyright (c) 2022 Dmitry Arkhipov (grisumbras@gmail.com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
// Official repository: https://github.com/boostorg/json
//
#include <boost/json/value.hpp>
#include "test_suite.hpp"
BOOST_JSON_NS_BEGIN
class pointer_test
{
bool
hasLocation(error_code const& ec)
{
return ec.has_location();
}
bool
hasLocation(std::error_code const&)
{
return true;
}
value
testValue() const
{
return value{
{"foo", {"bar", "baz", "baf"}},
{"", 0},
{"a/b", 1},
{"c%d", 2},
{"e^f", 3},
{"g|h", 4},
{"i\\j", 5},
{"k\"l", 6},
{" ", 7},
{"m~n", 8},
{"x", object{{"y", "z"}}},
};
}
value
bigObject() const
{
object result;
for (int i = 0; i < 50; ++i)
{
result.emplace(std::to_string(i), i);
}
return result;
}
public:
void
testRootPointer()
{
value const jv = testValue();
BOOST_TEST(&jv.at_pointer("") == &jv);
}
void
testChildPointer()
{
value const jv = testValue();
BOOST_TEST(&jv.at_pointer("/foo")== &jv.at("foo"));
BOOST_TEST(&jv.at_pointer("/c%d")== &jv.at("c%d"));
BOOST_TEST(&jv.at_pointer("/e^f")== &jv.at("e^f"));
BOOST_TEST(&jv.at_pointer("/g|h")== &jv.at("g|h"));
BOOST_TEST(&jv.at_pointer("/")== &jv.at(""));
BOOST_TEST(&jv.at_pointer("/i\\j")== &jv.at("i\\j"));
BOOST_TEST(&jv.at_pointer("/k\"l")== &jv.at("k\"l"));
BOOST_TEST(&jv.at_pointer("/ ")== &jv.at(" "));
}
void
testEscaped()
{
value const jv = testValue();
BOOST_TEST(&jv.at_pointer("/a~1b")== &jv.at("a/b"));
BOOST_TEST(&jv.at_pointer("/m~0n")== &jv.at("m~n"));
}
void
testNested()
{
value const jv = testValue();
BOOST_TEST(&jv.at_pointer("/foo/0") == &jv.at("foo").at(0));
BOOST_TEST(&jv.at_pointer("/foo/1") == &jv.at("foo").at(1));
BOOST_TEST(&jv.at_pointer("/x/y") == &jv.at("x").at("y"));
{
value v1;
object& o1 = v1.emplace_object();
object& o2 = (o1["very"] = value()).emplace_object();
object& o3 = (o2["deep"] = value()).emplace_object();
array& a1 = (o3["path"] = value()).emplace_array();
a1.emplace_back(value());
array& a2 = a1.emplace_back(value()).emplace_array();
a2.emplace_back(value());
a2.emplace_back(value());
array& a3 = a2.emplace_back(value()).emplace_array();
object& o4 = a3.emplace_back(value()).emplace_object();
object& o5 = (o4["0"] = value()).emplace_object();
value& v2 = o5["fin"] = value();
BOOST_TEST(&v1.at_pointer("/very/deep/path/1/2/0/0/fin") == &v2);
}
}
void
testErrors()
{
value const jv = testValue();
BOOST_TEST_THROWS(jv.at_pointer("foo"), system_error);
BOOST_TEST_THROWS(jv.at_pointer("/fo"), system_error);
BOOST_TEST_THROWS(jv.at_pointer("/m~"), system_error);
BOOST_TEST_THROWS(jv.at_pointer("/m~n"), system_error);
BOOST_TEST_THROWS(jv.at_pointer("/foo/bar"), system_error);
BOOST_TEST_THROWS(jv.at_pointer("/foo/"), system_error);
BOOST_TEST_THROWS(jv.at_pointer("/foo/01"), system_error);
BOOST_TEST_THROWS(jv.at_pointer("/foo/2b"), system_error);
BOOST_TEST_THROWS(jv.at_pointer("/x/y/z"), system_error);
}
template<class ErrorCode>
void
testNonThrowing()
{
value jv = testValue();
ErrorCode ec = error::syntax;
BOOST_TEST(jv.find_pointer("/foo/0", ec) == &jv.at("foo").at(0));
BOOST_TEST(!ec);
auto const& cjv = jv;
ec = error::syntax;
BOOST_TEST(cjv.find_pointer("/foo/1", ec) == &jv.at("foo").at(1));
BOOST_TEST(!ec);
jv.find_pointer("foo", ec);
BOOST_TEST(ec == error::missing_slash);
BOOST_TEST(hasLocation(ec));
jv.find_pointer("/fo", ec);
BOOST_TEST(ec == error::not_found);
BOOST_TEST(hasLocation(ec));
jv.find_pointer("/foo/25", ec);
BOOST_TEST(ec == error::not_found);
BOOST_TEST(hasLocation(ec));
value(object()).find_pointer("/foo", ec);
BOOST_TEST(ec == error::not_found);
BOOST_TEST(hasLocation(ec));
bigObject().find_pointer("/foo", ec);
BOOST_TEST(ec == error::not_found);
BOOST_TEST(hasLocation(ec));
jv.find_pointer("/m~", ec);
BOOST_TEST(ec == error::invalid_escape);
BOOST_TEST(hasLocation(ec));
jv.find_pointer("/m~n", ec);
BOOST_TEST(ec == error::invalid_escape);
BOOST_TEST(hasLocation(ec));
jv.find_pointer("/foo/bar", ec);
BOOST_TEST(ec == error::token_not_number);
BOOST_TEST(hasLocation(ec));
jv.find_pointer("/foo/", ec);
BOOST_TEST(ec == error::token_not_number);
BOOST_TEST(hasLocation(ec));
jv.find_pointer("/foo/01", ec);
BOOST_TEST(ec == error::token_not_number);
BOOST_TEST(hasLocation(ec));
jv.find_pointer("/foo/2b", ec);
BOOST_TEST(ec == error::token_not_number);
BOOST_TEST(hasLocation(ec));
jv.find_pointer("/foo/2.", ec);
BOOST_TEST(ec == error::token_not_number);
BOOST_TEST(hasLocation(ec));
jv.find_pointer("/foo/-", ec);
BOOST_TEST(ec == error::past_the_end);
BOOST_TEST(hasLocation(ec));
jv.find_pointer("/foo/-/x", ec);
BOOST_TEST(ec == error::past_the_end);
BOOST_TEST(hasLocation(ec));
jv.find_pointer("/foo/-1", ec);
BOOST_TEST(ec == error::token_not_number);
BOOST_TEST(hasLocation(ec));
jv.find_pointer("/x/y/z", ec);
BOOST_TEST(ec == error::value_is_scalar);
BOOST_TEST(hasLocation(ec));
string s = "/foo/";
s += std::to_string((std::numeric_limits<std::size_t>::max)());
if ( '9' == s[s.size() - 1] )
{
for (std::size_t i = 6; i < s.size(); ++i)
{
s[i] = '0';
}
s[5] = '1';
s += "0";
}
else
{
++s[s.size() - 1];
}
jv.find_pointer(s, ec);
BOOST_TEST(ec == error::token_overflow);
BOOST_TEST(hasLocation(ec));
}
void
run()
{
testRootPointer();
testChildPointer();
testEscaped();
testNested();
testErrors();
testNonThrowing<error_code>();
testNonThrowing<std::error_code>();
}
};
TEST_SUITE(pointer_test, "boost.json.pointer");
BOOST_JSON_NS_END