test: setup node with filesystem logger at gossip log level

- Remove remnants of TestLogWriter and MockLogger that will be
   reintroduced in a later PR to add a more structured TestConfig
   object.

tests/common/mod.rs

@@ -8,10 +8,9 @@
 #![cfg(any(test, cln_test, vss_test))]
 #![allow(dead_code)]
 
-use chrono::Utc;
 use ldk_node::config::{Config, EsploraSyncConfig};
 use ldk_node::io::sqlite_store::SqliteStore;
-use ldk_node::logger::{LogLevel, LogRecord, LogWriter};
+use ldk_node::logger::LogLevel;
 use ldk_node::payment::{PaymentDirection, PaymentKind, PaymentStatus};
 use ldk_node::{
 	Builder, CustomTlvRecord, Event, FilesystemLoggerConfig, LightningBalance, Node, NodeError,
@@ -39,11 +38,9 @@ use electrum_client::ElectrumApi;
 use rand::distributions::Alphanumeric;
 use rand::{thread_rng, Rng};
 
-use log::{LevelFilter, Log};
-
 use std::env;
 use std::path::PathBuf;
-use std::sync::{Arc, Mutex, RwLock};
+use std::sync::{Arc, RwLock};
 use std::time::Duration;
 
 macro_rules! expect_event {
@@ -252,70 +249,6 @@ pub(crate) enum TestChainSource<'a> {
 	BitcoindRpc(&'a BitcoinD),
 }
 
-#[derive(Clone)]
-pub(crate) enum TestLogWriter {
-	File(FilesystemLoggerConfig),
-	LogFacade(LogLevel),
-	Custom(Arc<dyn LogWriter + Send + Sync>),
-}
-
-/// Simple in-memory mock `log` logger for tests.
-pub(crate) struct MockLogger {
-	logs: Arc<Mutex<Vec<String>>>,
-}
-
-impl MockLogger {
-	pub fn new() -> Self {
-		Self { logs: Arc::new(Mutex::new(Vec::new())) }
-	}
-
-	pub fn retrieve_logs(&self) -> Vec<String> {
-		self.logs.lock().unwrap().clone()
-	}
-}
-
-impl Log for MockLogger {
-	fn log(&self, record: &log::Record) {
-		let message = format!(
-			"{} [{}] {}",
-			Utc::now().format("%Y-%m-%d %H:%M:%S"),
-			record.level(),
-			record.args()
-		);
-		self.logs.lock().unwrap().push(message);
-	}
-
-	fn enabled(&self, _metadata: &log::Metadata) -> bool {
-		true
-	}
-
-	fn flush(&self) {}
-}
-
-impl LogWriter for MockLogger {
-	fn log(&self, record: LogRecord) {
-		let message = format!(
-			"{} [{}] {}",
-			Utc::now().format("%Y-%m-%d %H:%M:%S"),
-			record.level,
-			record.args
-		);
-		self.logs.lock().unwrap().push(message);
-	}
-}
-
-pub(crate) fn init_log_logger(level: LevelFilter) -> Arc<MockLogger> {
-	let logger = Arc::new(MockLogger::new());
-	log::set_boxed_logger(Box::new(logger.clone())).unwrap();
-	log::set_max_level(level);
-	logger
-}
-
-pub(crate) fn init_custom_logger() -> Arc<MockLogger> {
-	let logger = Arc::new(MockLogger::new());
-	logger
-}
-
 macro_rules! setup_builder {
 	($builder: ident, $config: expr) => {
 		#[cfg(feature = "uniffi")]
@@ -374,6 +307,10 @@ pub(crate) fn setup_node(
 		},
 	}
 
+	let mut fs_config = FilesystemLoggerConfig::default();
+	fs_config.log_level = Some(LogLevel::Gossip);
+	builder.set_filesystem_logger(fs_config);
+
 	if let Some(seed) = seed_bytes {
 		builder.set_entropy_seed_bytes(seed).unwrap();
 	}