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realm-js/tests/results.cpp

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#include "catch.hpp"
#include "util/index_helpers.hpp"
#include "util/test_file.hpp"
#include "impl/realm_coordinator.hpp"
#include "object_schema.hpp"
#include "property.hpp"
#include "results.hpp"
#include "schema.hpp"
#include <realm/commit_log.hpp>
#include <realm/group_shared.hpp>
#include <realm/link_view.hpp>
#include <unistd.h>
using namespace realm;
TEST_CASE("Results") {
InMemoryTestFile config;
config.cache = false;
config.automatic_change_notifications = false;
config.schema = std::make_unique<Schema>(Schema{
{"object", "", {
{"value", PropertyType::Int},
{"link", PropertyType::Object, "linked to object", false, false, true}
}},
{"other object", "", {
{"value", PropertyType::Int}
}},
{"linking object", "", {
{"link", PropertyType::Object, "object", false, false, true}
}},
{"linked to object", "", {
{"value", PropertyType::Int}
}}
});
auto r = Realm::get_shared_realm(config);
auto coordinator = _impl::RealmCoordinator::get_existing_coordinator(config.path);
auto table = r->read_group()->get_table("class_object");
r->begin_transaction();
table->add_empty_row(10);
for (int i = 0; i < 10; ++i)
table->set_int(0, i, i * 2);
r->commit_transaction();
Results results(r, *config.schema->find("object"), table->where().greater(0, 0).less(0, 10));
SECTION("unsorted notifications") {
int notification_calls = 0;
CollectionChangeSet change;
auto token = results.add_notification_callback([&](CollectionChangeSet c, std::exception_ptr err) {
REQUIRE_FALSE(err);
change = c;
++notification_calls;
});
advance_and_notify(*r);
auto write = [&](auto&& f) {
r->begin_transaction();
f();
r->commit_transaction();
advance_and_notify(*r);
};
SECTION("initial results are delivered") {
REQUIRE(notification_calls == 1);
}
SECTION("notifications are sent asynchronously") {
r->begin_transaction();
table->set_int(0, 0, 4);
r->commit_transaction();
REQUIRE(notification_calls == 1);
advance_and_notify(*r);
REQUIRE(notification_calls == 2);
}
SECTION("notifications are not delivered when the token is destroyed before they are calculated") {
r->begin_transaction();
table->set_int(0, 0, 4);
r->commit_transaction();
REQUIRE(notification_calls == 1);
token = {};
advance_and_notify(*r);
REQUIRE(notification_calls == 1);
}
SECTION("notifications are not delivered when the token is destroyed before they are delivered") {
r->begin_transaction();
table->set_int(0, 0, 4);
r->commit_transaction();
REQUIRE(notification_calls == 1);
coordinator->on_change();
token = {};
r->notify();
REQUIRE(notification_calls == 1);
}
SECTION("notifications are delivered when a new callback is added from within a callback") {
NotificationToken token2, token3;
bool called = false;
token2 = results.add_notification_callback([&](CollectionChangeSet, std::exception_ptr) {
token3 = results.add_notification_callback([&](CollectionChangeSet, std::exception_ptr) {
called = true;
});
});
advance_and_notify(*r);
REQUIRE(called);
}
SECTION("notifications are not delivered when a callback is removed from within a callback") {
NotificationToken token2, token3;
token2 = results.add_notification_callback([&](CollectionChangeSet, std::exception_ptr) {
token3 = {};
});
token3 = results.add_notification_callback([&](CollectionChangeSet, std::exception_ptr) {
REQUIRE(false);
});
advance_and_notify(*r);
}
SECTION("removing the current callback does not stop later ones from being called") {
NotificationToken token2, token3;
bool called = false;
token2 = results.add_notification_callback([&](CollectionChangeSet, std::exception_ptr) {
token2 = {};
});
token3 = results.add_notification_callback([&](CollectionChangeSet, std::exception_ptr) {
called = true;
});
advance_and_notify(*r);
REQUIRE(called);
}
SECTION("modifications to unrelated tables do not send notifications") {
write([&] {
r->read_group()->get_table("class_other object")->add_empty_row();
});
REQUIRE(notification_calls == 1);
}
SECTION("irrelevant modifications to linked tables do not send notifications") {
write([&] {
r->read_group()->get_table("class_linked to object")->add_empty_row();
});
REQUIRE(notification_calls == 1);
}
SECTION("irrelevant modifications to linking tables do not send notifications") {
write([&] {
r->read_group()->get_table("class_linking object")->add_empty_row();
});
REQUIRE(notification_calls == 1);
}
SECTION("modifications that leave a non-matching row non-matching do not send notifications") {
write([&] {
table->set_int(0, 6, 13);
});
REQUIRE(notification_calls == 1);
}
SECTION("deleting non-matching rows does not send a notification") {
write([&] {
table->move_last_over(0);
table->move_last_over(6);
});
REQUIRE(notification_calls == 1);
}
SECTION("modifying a matching row and leaving it matching marks that row as modified") {
write([&] {
table->set_int(0, 1, 3);
});
REQUIRE(notification_calls == 2);
REQUIRE_INDICES(change.modifications, 0);
}
SECTION("modifying a matching row to no longer match marks that row as deleted") {
write([&] {
table->set_int(0, 2, 0);
});
REQUIRE(notification_calls == 2);
REQUIRE_INDICES(change.deletions, 1);
}
SECTION("modifying a non-matching row to match marks that row as inserted, but not modified") {
write([&] {
table->set_int(0, 7, 3);
});
REQUIRE(notification_calls == 2);
REQUIRE_INDICES(change.insertions, 4);
REQUIRE(change.modifications.empty());
}
SECTION("deleting a matching row marks that row as deleted") {
write([&] {
table->move_last_over(3);
});
REQUIRE(notification_calls == 2);
REQUIRE_INDICES(change.deletions, 2);
}
SECTION("moving a matching row via deletion marks that row as moved") {
write([&] {
table->where().greater_equal(0, 10).find_all().clear(RemoveMode::unordered);
table->move_last_over(0);
});
REQUIRE(notification_calls == 2);
REQUIRE_MOVES(change, {3, 0});
}
SECTION("modifications from multiple transactions are collapsed") {
r->begin_transaction();
table->set_int(0, 0, 6);
r->commit_transaction();
coordinator->on_change();
r->begin_transaction();
table->set_int(0, 1, 0);
r->commit_transaction();
REQUIRE(notification_calls == 1);
coordinator->on_change();
r->notify();
REQUIRE(notification_calls == 2);
}
SECTION("inserting a row then modifying it in a second transaction does not report it as modified") {
r->begin_transaction();
size_t ndx = table->add_empty_row();
table->set_int(0, ndx, 6);
r->commit_transaction();
coordinator->on_change();
r->begin_transaction();
table->set_int(0, ndx, 7);
r->commit_transaction();
advance_and_notify(*r);
REQUIRE(notification_calls == 2);
REQUIRE_INDICES(change.insertions, 4);
REQUIRE(change.modifications.empty());
}
SECTION("modification indices are pre-insert/delete") {
r->begin_transaction();
table->set_int(0, 2, 0);
table->set_int(0, 3, 6);
r->commit_transaction();
advance_and_notify(*r);
REQUIRE(notification_calls == 2);
REQUIRE_INDICES(change.deletions, 1);
REQUIRE_INDICES(change.modifications, 2);
}
SECTION("notifications are not delivered when collapsing transactions results in no net change") {
r->begin_transaction();
size_t ndx = table->add_empty_row();
table->set_int(0, ndx, 5);
r->commit_transaction();
coordinator->on_change();
r->begin_transaction();
table->move_last_over(ndx);
r->commit_transaction();
REQUIRE(notification_calls == 1);
coordinator->on_change();
r->notify();
REQUIRE(notification_calls == 1);
}
SECTION("the first call of a notification can include changes if it previously ran for a different callback") {
auto token2 = results.add_notification_callback([&](CollectionChangeSet c, std::exception_ptr) {
REQUIRE(!c.empty());
});
write([&] {
table->set_int(0, table->add_empty_row(), 5);
});
}
}
// Sort in descending order
results = results.sort({{0}, {false}});
SECTION("sorted notifications") {
int notification_calls = 0;
CollectionChangeSet change;
auto token = results.add_notification_callback([&](CollectionChangeSet c, std::exception_ptr err) {
REQUIRE_FALSE(err);
change = c;
++notification_calls;
});
advance_and_notify(*r);
auto write = [&](auto&& f) {
r->begin_transaction();
f();
r->commit_transaction();
advance_and_notify(*r);
};
SECTION("modifications that leave a non-matching row non-matching do not send notifications") {
write([&] {
table->set_int(0, 6, 13);
});
REQUIRE(notification_calls == 1);
}
SECTION("deleting non-matching rows does not send a notification") {
write([&] {
table->move_last_over(0);
table->move_last_over(6);
});
REQUIRE(notification_calls == 1);
}
SECTION("modifying a matching row and leaving it matching marks that row as modified") {
write([&] {
table->set_int(0, 1, 3);
});
REQUIRE(notification_calls == 2);
REQUIRE_INDICES(change.modifications, 3);
}
SECTION("modifying a matching row to no longer match marks that row as deleted") {
write([&] {
table->set_int(0, 2, 0);
});
REQUIRE(notification_calls == 2);
REQUIRE_INDICES(change.deletions, 2);
}
SECTION("modifying a non-matching row to match marks that row as inserted") {
write([&] {
table->set_int(0, 7, 3);
});
REQUIRE(notification_calls == 2);
REQUIRE_INDICES(change.insertions, 3);
}
SECTION("deleting a matching row marks that row as deleted") {
write([&] {
table->move_last_over(3);
});
REQUIRE(notification_calls == 2);
REQUIRE_INDICES(change.deletions, 1);
}
SECTION("moving a matching row via deletion does not send a notification") {
write([&] {
table->where().greater_equal(0, 10).find_all().clear(RemoveMode::unordered);
table->move_last_over(0);
});
REQUIRE(notification_calls == 1);
}
SECTION("modifying a matching row to change its position sends insert+delete") {
write([&] {
table->set_int(0, 2, 9);
});
REQUIRE(notification_calls == 2);
REQUIRE_INDICES(change.deletions, 2);
REQUIRE_INDICES(change.insertions, 0);
}
SECTION("modifications from multiple transactions are collapsed") {
r->begin_transaction();
table->set_int(0, 0, 5);
r->commit_transaction();
r->begin_transaction();
table->set_int(0, 1, 0);
r->commit_transaction();
REQUIRE(notification_calls == 1);
advance_and_notify(*r);
REQUIRE(notification_calls == 2);
}
SECTION("moving a matching row by deleting all other rows") {
r->begin_transaction();
table->clear();
table->add_empty_row(2);
table->set_int(0, 0, 15);
table->set_int(0, 1, 5);
r->commit_transaction();
advance_and_notify(*r);
write([&] {
table->move_last_over(0);
table->add_empty_row();
table->set_int(0, 1, 3);
});
REQUIRE(notification_calls == 3);
REQUIRE(change.deletions.empty());
REQUIRE_INDICES(change.insertions, 1);
}
}
}
TEST_CASE("Async Results error handling") {
InMemoryTestFile config;
config.cache = false;
config.automatic_change_notifications = false;
config.schema = std::make_unique<Schema>(Schema{
{"object", "", {
{"value", PropertyType::Int},
}},
});
auto r = Realm::get_shared_realm(config);
auto coordinator = _impl::RealmCoordinator::get_existing_coordinator(config.path);
Results results(r, *config.schema->find("object"), *r->read_group()->get_table("class_object"));
class OpenFileLimiter {
public:
OpenFileLimiter()
{
// Set the max open files to zero so that opening new files will fail
getrlimit(RLIMIT_NOFILE, &m_old);
rlimit rl = m_old;
rl.rlim_cur = 0;
setrlimit(RLIMIT_NOFILE, &rl);
}
~OpenFileLimiter()
{
setrlimit(RLIMIT_NOFILE, &m_old);
}
private:
rlimit m_old;
};
SECTION("error when opening the advancer SG") {
OpenFileLimiter limiter;
SECTION("error is delivered asynchronously") {
bool called = false;
auto token = results.add_notification_callback([&](CollectionChangeSet, std::exception_ptr err) {
REQUIRE(err);
called = true;
});
REQUIRE(!called);
coordinator->on_change();
REQUIRE(!called);
r->notify();
REQUIRE(called);
}
SECTION("adding another callback does not send the error again") {
bool called = false;
auto token = results.add_notification_callback([&](CollectionChangeSet, std::exception_ptr err) {
REQUIRE(err);
REQUIRE_FALSE(called);
called = true;
});
advance_and_notify(*r);
bool called2 = false;
auto token2 = results.add_notification_callback([&](CollectionChangeSet, std::exception_ptr err) {
REQUIRE(err);
REQUIRE_FALSE(called2);
called2 = true;
});
advance_and_notify(*r);
REQUIRE(called2);
}
}
SECTION("error when opening the executor SG") {
SECTION("error is delivered asynchronously") {
bool called = false;
auto token = results.add_notification_callback([&](CollectionChangeSet, std::exception_ptr err) {
REQUIRE(err);
called = true;
});
OpenFileLimiter limiter;
REQUIRE(!called);
coordinator->on_change();
REQUIRE(!called);
r->notify();
REQUIRE(called);
}
SECTION("adding another callback does not send the error again") {
bool called = false;
auto token = results.add_notification_callback([&](CollectionChangeSet, std::exception_ptr err) {
REQUIRE(err);
REQUIRE_FALSE(called);
called = true;
});
OpenFileLimiter limiter;
advance_and_notify(*r);
bool called2 = false;
auto token2 = results.add_notification_callback([&](CollectionChangeSet, std::exception_ptr err) {
REQUIRE(err);
REQUIRE_FALSE(called2);
called2 = true;
});
advance_and_notify(*r);
REQUIRE(called2);
}
}
}
TEST_CASE("Notifications on moved Results") {
InMemoryTestFile config;
config.cache = false;
config.automatic_change_notifications = false;
config.schema = std::make_unique<Schema>(Schema{
{"object", "", {
{"value", PropertyType::Int},
}},
});
auto r = Realm::get_shared_realm(config);
auto table = r->read_group()->get_table("class_object");
auto results = std::make_unique<Results>(r, *config.schema->find("object"), *table);
int notification_calls = 0;
auto token = results->add_notification_callback([&](CollectionChangeSet c, std::exception_ptr err) {
REQUIRE_FALSE(err);
++notification_calls;
});
advance_and_notify(*r);
auto write = [&](auto&& f) {
r->begin_transaction();
f();
r->commit_transaction();
advance_and_notify(*r);
};
SECTION("notifications continue to work after Results is moved (move-constructor)") {
Results r(std::move(*results));
results.reset();
write([&] {
table->set_int(0, table->add_empty_row(), 1);
});
REQUIRE(notification_calls == 2);
}
SECTION("notifications continue to work after Results is moved (move-assignment)") {
Results r;
r = std::move(*results);
results.reset();
write([&] {
table->set_int(0, table->add_empty_row(), 1);
});
REQUIRE(notification_calls == 2);
}
}
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