Really made imports drop the db

Cargo.lock

@@ -102,7 +102,7 @@ checksum = "fad582f4b9e86b6caa621cabeb0963332d92eea04729ab12892c2533951e6440"
 
 [[package]]
 name = "j_db"
-version = "0.1.1"
+version = "0.1.2"
 dependencies = [
  "byteorder",
  "json",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "j_db"
-version = "0.1.1"
+version = "0.1.2"
 authors = ["Joey Hines <joey@ahines.net>"]
 edition = "2021"
 description = "A good enough (TM) embedded Rust DB* and ORM*"

src/database.rs

@@ -217,7 +217,11 @@ impl Database {
     }
 
     pub fn import_db(&self, json: JsonValue) -> Result<()> {
+        for tree in self.db.tree_names() {
+            self.db.open_tree(tree)?.clear()?;
+        }
         self.db.clear()?;
+        self.db.flush()?;
         for model in json["global"].members() {
             let id_bytes = model["id"].as_u64().unwrap().to_be_bytes();
             self.db.insert(id_bytes, model.to_string().as_bytes())?;
@@ -245,6 +249,7 @@ mod tests {
     use crate::model::JdbModel;
     use crate::test::{cleanup, User, DB, LOCK};
     use std::time::Instant;
+    use json::JsonValue;
 
     #[test]
     fn test_insert() {
@@ -371,4 +376,26 @@ mod tests {
 
         cleanup();
     }
+
+    #[test]
+    fn test_import_clear() {
+        let _lock = LOCK.lock().unwrap();
+        cleanup();
+
+        let mut users = vec![];
+        for i in 0..10 {
+            let user = User::new(&format!("User{}", i), 0);
+
+            let u = DB.insert::<User>(user).unwrap();
+
+            users.push(u);
+        }
+
+        DB.import_db(JsonValue::Null).unwrap();
+
+        let count = DB.filter(|_, _user: &User| true).unwrap().count();
+        assert_eq!(count, 0);
+
+        cleanup();
+    }
 }