Format the IO error to include an ending line break

1 files changed, 10 insertions, 2 deletions

diff --git a/CLI/rust/src/game_of_life/generators/input.rs b/CLI/rust/src/game_of_life/generators/input.rs
index dc22525..547b40e 100644
--- a/CLI/rust/src/game_of_life/generators/input.rs
+++ b/CLI/rust/src/game_of_life/generators/input.rs
@@ -1,6 +1,6 @@
 use crate::game_of_life::opts::Opts;
 use crate::game_of_life::universe::Universe;
-use clap::Error;
+use clap::{Error, ErrorKind};
 use regex::Regex;
 
 #[cfg(test)]
@@ -69,7 +69,15 @@ mod new {
 /// and generate a new universe instance in the initial state from file
 #[cfg_attr(test, mockable)]
 fn generate_file_data(opts: Opts) -> Result<Universe, Error> {
-    let file = std::fs::read_to_string(opts.input.clone().unwrap())?;
+    let file = match std::fs::read_to_string(opts.input.clone().unwrap()) {
+        Ok(s) => s,
+        Err(e) => {
+            return Err(Error::with_description(
+                format!("{}\n", e.to_string()),
+                ErrorKind::Io,
+            ))
+        }
+    };
     let data: Vec<Vec<bool>> = file
         .split("\n")
         .map(|s| {