feat: allow creating wallets with specified directory

mem/src/lib.rs

@@ -1,8 +1,9 @@
-use bdk_wallet::bitcoin::{consensus, Transaction};
 use std::time::Duration;
+
+use bdk_wallet::bitcoin::{Transaction, consensus};
 use tokio::sync::mpsc;
 use tokio_stream::wrappers::ReceiverStream;
-use zeromq::{Socket, SocketRecv, SubSocket};
+use zeromq::{Socket as _, SocketRecv as _, SubSocket};
 
 pub async fn stream_unconfirmed_tx(zmq_connect: &str) -> ReceiverStream<Transaction> {
     // Subscribe to raw transactions via ZMQ

testenv/src/lib.rs

@@ -161,6 +161,12 @@ impl TestEnv {
         Self::new_with_conf(Config::default())
     }
 
+    /// Generate a new temporary directory
+    pub fn get_tmp_dir(&self) -> anyhow::Result<TempDir> {
+        let dir = TempDir::new()?;
+        Ok(dir)
+    }
+
     /// Create a new test environment with ZMQ enabled on bitcoind.
     ///
     /// The ZMQ socket addresses are available via