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#include <test.hpp>
TEST_CASE("rollback when using packed_field functions") {
std::string buffer;
protozero::pbf_writer pw{buffer};
pw.add_fixed64(2, 111);
pw.add_string(3, "foo");
SECTION("empty - should do rollback") {
{
const protozero::packed_field_sint64 field{pw, 1};
}
pw.add_int32(4, 123);
protozero::pbf_reader msg{buffer};
msg.next();
REQUIRE(msg.tag() == 2);
REQUIRE(msg.get_fixed64() == 111);
msg.next();
REQUIRE(msg.tag() == 3);
REQUIRE(msg.get_string() == "foo");
msg.next();
REQUIRE(msg.tag() == 4);
REQUIRE(msg.get_int32() == 123);
}
SECTION("one") {
{
protozero::packed_field_sint64 field{pw, 1};
field.add_element(17L);
}
pw.add_int32(4, 123);
protozero::pbf_reader msg{buffer};
msg.next();
REQUIRE(msg.tag() == 2);
REQUIRE(msg.get_fixed64() == 111);
msg.next();
REQUIRE(msg.tag() == 3);
REQUIRE(msg.get_string() == "foo");
msg.next();
REQUIRE(msg.tag() == 1);
const auto it_range = msg.get_packed_sint64();
auto it = it_range.begin();
REQUIRE(*it++ == 17L);
REQUIRE(it == it_range.end());
msg.next();
REQUIRE(msg.tag() == 4);
REQUIRE(msg.get_int32() == 123);
}
SECTION("many") {
{
protozero::packed_field_sint64 field{pw, 1};
field.add_element(17L);
field.add_element( 0L);
field.add_element( 1L);
field.add_element(-1L);
field.add_element(std::numeric_limits<int64_t>::max());
field.add_element(std::numeric_limits<int64_t>::min());
}
pw.add_int32(4, 123);
protozero::pbf_reader msg{buffer};
msg.next();
REQUIRE(msg.tag() == 2);
REQUIRE(msg.get_fixed64() == 111);
msg.next();
REQUIRE(msg.tag() == 3);
REQUIRE(msg.get_string() == "foo");
msg.next();
REQUIRE(msg.tag() == 1);
const auto it_range = msg.get_packed_sint64();
auto it = it_range.begin();
REQUIRE(*it++ == 17L);
REQUIRE(*it++ == 0L);
REQUIRE(*it++ == 1L);
REQUIRE(*it++ == -1L);
REQUIRE(*it++ == std::numeric_limits<int64_t>::max());
REQUIRE(*it++ == std::numeric_limits<int64_t>::min());
REQUIRE(it == it_range.end());
msg.next();
REQUIRE(msg.tag() == 4);
REQUIRE(msg.get_int32() == 123);
}
SECTION("manual rollback") {
{
protozero::packed_field_sint64 field{pw, 1};
field.add_element(17L);
field.add_element( 0L);
field.add_element( 1L);
field.rollback();
}
pw.add_int32(4, 123);
protozero::pbf_reader msg{buffer};
msg.next();
REQUIRE(msg.tag() == 2);
REQUIRE(msg.get_fixed64() == 111);
msg.next();
REQUIRE(msg.tag() == 3);
REQUIRE(msg.get_string() == "foo");
msg.next();
REQUIRE(msg.tag() == 4);
REQUIRE(msg.get_int32() == 123);
}
SECTION("manual rollback") {
{
protozero::packed_field_sint64 field{pw, 1};
field.add_element(1L);
field.rollback();
REQUIRE_THROWS_AS(field.add_element(1L), assert_error);
}
}
}
TEST_CASE("rollback when using submessages") {
std::string buffer;
protozero::pbf_writer pw{buffer};
pw.add_fixed64(2, 111);
pw.add_string(3, "foo");
{
protozero::pbf_writer pws{pw, 1};
pws.add_string(1, "foobar");
pws.rollback();
}
pw.add_int32(4, 123);
protozero::pbf_reader msg{buffer};
msg.next();
REQUIRE(msg.tag() == 2);
REQUIRE(msg.get_fixed64() == 111);
msg.next();
REQUIRE(msg.tag() == 3);
REQUIRE(msg.get_string() == "foo");
msg.next();
REQUIRE(msg.tag() == 4);
REQUIRE(msg.get_int32() == 123);
}
TEST_CASE("rollback on parent message is never allowed") {
std::string buffer;
protozero::pbf_writer pw{buffer};
REQUIRE_THROWS_AS(pw.rollback(), assert_error);
}
TEST_CASE("rollback on parent message is not allowed even if there is a submessage") {
std::string buffer;
protozero::pbf_writer pw{buffer};
pw.add_fixed64(2, 111);
pw.add_string(3, "foo");
{
protozero::pbf_writer pws{pw, 1};
pws.add_string(1, "foobar");
REQUIRE_THROWS_AS(pw.rollback(), assert_error);
}
}
TEST_CASE("rollback on message is not allowed if there is a nested submessage") {
std::string buffer;
protozero::pbf_writer pw{buffer};
pw.add_fixed64(2, 111);
pw.add_string(3, "foo");
{
protozero::pbf_writer pws{pw, 1};
pws.add_string(1, "foobar");
const protozero::pbf_writer pws2{pws, 1};
REQUIRE_THROWS_AS(pws.rollback(), assert_error);
}
}
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