fixup! Abstract out utilities from FilesystemPersister

Author: valentinewallace

lightning-persister/src/utils.rs

@@ -8,7 +8,7 @@ pub(crate) trait DiskWriteable {
 	fn write_to_file(&self, writer: &mut fs::File) -> Result<(), std::io::Error>;
 }
 
-fn get_full_filepath(filepath: String, filename: String) -> String {
+pub(crate) fn get_full_filepath(filepath: String, filename: String) -> String {
 	let mut path = PathBuf::from(filepath);
 	path.push(filename);
 	path.to_str().unwrap().to_string()
@@ -42,6 +42,7 @@ pub(crate) fn write_to_file(path: String, filename: String, data: &dyn DiskWrite
 	Ok(())
 }
 
+#[cfg(test)]
 mod tests {
 	use super::{DiskWriteable, get_full_filepath, write_to_file};
 	use std::fs;