luna-orm 0.3.6

ORM based on sqlx
Documentation 
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use std::sync::Arc;
use std::sync::OnceLock;
use tokio::sync::Mutex;

static GLOBAL_TEST_MUTEX: OnceLock<Arc<Mutex<()>>> = OnceLock::new();

pub fn get_test_mutex() -> &'static Arc<Mutex<()>> {
    GLOBAL_TEST_MUTEX.get_or_init(|| Arc::new(Mutex::new(())))
}