Trying to setup tests

backend/src/tests_common.rs

@@ -0,0 +1,25 @@
+use crate::db;
+use include_dir::{Dir, include_dir};
+use rusqlite_migration::Migrations;
+use std::sync::LazyLock;
+use tokio::sync::Mutex;
+
+static TEST_MIGRATIONS_DIR: Dir = include_dir!("$CARGO_MANIFEST_DIR/tests_database_migrations");
+
+// Define migrations. These are applied atomically.
+static TEST_MIGRATIONS: LazyLock<Migrations<'static>> =
+    LazyLock::new(|| Migrations::from_directory(&TEST_MIGRATIONS_DIR).unwrap());
+
+static INITIALISED: Mutex<bool> = Mutex::const_new(false);
+
+pub async fn setup_database() {
+    let mut initialised = INITIALISED.lock().await;
+    if *initialised {
+        return;
+    }
+    db::init_db().await.unwrap();
+    let mut conn = db::get_db_connection();
+    TEST_MIGRATIONS.to_latest(&mut conn).unwrap();
+
+    *initialised = true;
+}