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#include "capi_tester.hpp"
#include "duckdb.h"
#include "test_helpers.hpp"
#include <chrono>
#include <thread>
using namespace duckdb;
using namespace std;
static void background_thread_connect(duckdb_instance_cache instance_cache, const char *path) {
try {
duckdb_database out_database;
auto state = duckdb_get_or_create_from_cache(instance_cache, path, &out_database, nullptr, nullptr);
REQUIRE(state == DuckDBSuccess);
duckdb_close(&out_database);
} catch (std::exception &ex) {
FAIL(ex.what());
}
}
TEST_CASE("Test the database instance cache in the C API", "[api][.]") {
auto instance_cache = duckdb_create_instance_cache();
for (idx_t i = 0; i < 30; i++) {
auto path = TestCreatePath("shared_db.db");
duckdb_database shared_out_database;
auto state =
duckdb_get_or_create_from_cache(instance_cache, path.c_str(), &shared_out_database, nullptr, nullptr);
REQUIRE(state == DuckDBSuccess);
thread background_thread(background_thread_connect, instance_cache, path.c_str());
duckdb_close(&shared_out_database);
background_thread.join();
TestDeleteFile(path);
REQUIRE(1);
}
duckdb_destroy_instance_cache(&instance_cache);
}
TEST_CASE("Test the database instance cache in the C API with a null path", "[capi]") {
auto instance_cache = duckdb_create_instance_cache();
duckdb_database db;
auto state = duckdb_get_or_create_from_cache(instance_cache, nullptr, &db, nullptr, nullptr);
REQUIRE(state == DuckDBSuccess);
duckdb_close(&db);
duckdb_destroy_instance_cache(&instance_cache);
}
TEST_CASE("Test the database instance cache in the C API with an empty path", "[capi]") {
auto instance_cache = duckdb_create_instance_cache();
duckdb_database db;
auto state = duckdb_get_or_create_from_cache(instance_cache, "", &db, nullptr, nullptr);
REQUIRE(state == DuckDBSuccess);
duckdb_close(&db);
duckdb_destroy_instance_cache(&instance_cache);
}
TEST_CASE("Test the database instance cache in the C API with a memory path", "[capi]") {
auto instance_cache = duckdb_create_instance_cache();
duckdb_database db;
auto state = duckdb_get_or_create_from_cache(instance_cache, ":memory:", &db, nullptr, nullptr);
REQUIRE(state == DuckDBSuccess);
duckdb_close(&db);
duckdb_destroy_instance_cache(&instance_cache);
}
TEST_CASE("Test the database instance cache with case-insensitive FS", "[capi]") {
// Check that file on disk is created in user-specified case
// independently whether FS is case-sensitive or not.
// FS access can be eventually changed to CAPI FS.
duckdb::unique_ptr<FileSystem> fs = FileSystem::CreateLocal();
string work_dir = TestDirectoryPath();
auto instance_cache = duckdb_create_instance_cache();
std::vector<string> db_file_list = {"Test1.db", "TEST2.db", "TeSt3.db"};
for (const string &db_file : db_file_list) {
string db_path = TestJoinPath(work_dir, db_file);
string attached_db_path = TestJoinPath(work_dir, "attached_" + db_file);
fs->TryRemoveFile(db_path);
fs->TryRemoveFile(attached_db_path);
duckdb_database db1 = nullptr;
REQUIRE(duckdb_get_or_create_from_cache(instance_cache, db_path.c_str(), &db1, nullptr, nullptr) ==
DuckDBSuccess);
duckdb_connection conn1 = nullptr;
REQUIRE(duckdb_connect(db1, &conn1) == DuckDBSuccess);
REQUIRE(duckdb_query(conn1, (string("ATTACH '") + attached_db_path + "' AS attached").c_str(), nullptr) ==
DuckDBSuccess);
REQUIRE(duckdb_query(conn1, "CREATE TABLE attached.tab1 (col1 INT)", nullptr) == DuckDBSuccess);
// Check the file with originally specified case exists in FS
bool found = false;
fs->ListFiles(work_dir, [&db_file, &found](const string &name, bool) {
if (name == db_file) {
found = true;
}
});
REQUIRE(found);
// Get the DB from cache using different case and check that instance is the same
// (when the FS and instance cache are case-insensitive) and different (when case-sensitive)
string db_file_lower = db_file;
std::transform(db_file_lower.begin(), db_file_lower.end(), db_file_lower.begin(),
[](unsigned char c) { return tolower(c); });
string db_path_lower = TestJoinPath(work_dir, db_file_lower);
fs->TryRemoveFile(db_path_lower);
duckdb_database db2 = nullptr;
REQUIRE(duckdb_get_or_create_from_cache(instance_cache, db_path_lower.c_str(), &db2, nullptr, nullptr) ==
DuckDBSuccess);
duckdb_connection conn2 = nullptr;
REQUIRE(duckdb_connect(db2, &conn2) == DuckDBSuccess);
duckdb_result result;
memset(&result, '\0', sizeof(result));
REQUIRE(duckdb_query(conn2, "SELECT COUNT(*) FROM information_schema.tables WHERE table_name = 'tab1'",
&result) == DuckDBSuccess);
duckdb_data_chunk chunk = duckdb_fetch_chunk(result);
REQUIRE(chunk != nullptr);
duckdb_vector vec = duckdb_data_chunk_get_vector(chunk, 0);
REQUIRE(vec != nullptr);
int32_t *data = reinterpret_cast<int32_t *>(duckdb_vector_get_data(vec));
int32_t count = data[0];
#if defined(_WIN32) || defined(__APPLE__) // case insensitive, attached
REQUIRE(count == 1);
#else // !(_WIN32 or __APPLE__): case sensitive, not attached
REQUIRE(count == 0);
#endif // _WIN32 or __APPLE__
// Cleanup
duckdb_destroy_data_chunk(&chunk);
duckdb_destroy_result(&result);
duckdb_disconnect(&conn2);
duckdb_close(&db2);
duckdb_disconnect(&conn1);
duckdb_close(&db1);
if (count == 0) {
fs->TryRemoveFile(db_path_lower);
}
fs->TryRemoveFile(db_path);
fs->TryRemoveFile(attached_db_path);
}
duckdb_destroy_instance_cache(&instance_cache);
}
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