some small clean-ups

src/file_browser.rs

@@ -1181,7 +1181,7 @@ impl FileBrowser {
 
         let fs = self.fs_stat.read()?.find_fs(&file.path)?.clone();
 
-        let dev = fs.get_dev();
+        let dev = fs.get_dev().unwrap_or(String::from(""));
         let free_space = fs.get_free();
         let total_space = fs.get_total();
         let space = format!("{}{} / {}",

src/icon.rs

@@ -278,118 +278,3 @@ impl Icons {
         m
     }
 }
-
-#[cfg(test)]
-mod test {
-    use super::{Icons, Theme, ICON_SPACE};
-    use crate::meta::Meta;
-    use std::fs::File;
-    use tempdir::TempDir;
-
-    #[test]
-    fn get_no_icon() {
-        let tmp_dir = TempDir::new("test_file_type").expect("failed to create temp dir");
-        let file_path = tmp_dir.path().join("file.txt");
-        File::create(&file_path).expect("failed to create file");
-        let meta = Meta::from_path(&file_path).unwrap();
-
-        let icon = Icons::new(Theme::NoIcon);
-        let icon = icon.get(&meta.name);
-
-        assert_eq!(icon, "");
-    }
-
-    #[test]
-    fn get_default_file_icon() {
-        let tmp_dir = TempDir::new("test_file_type").expect("failed to create temp dir");
-        let file_path = tmp_dir.path().join("file");
-        File::create(&file_path).expect("failed to create file");
-        let meta = Meta::from_path(&file_path).unwrap();
-
-        let icon = Icons::new(Theme::Fancy);
-        let icon = icon.get(&meta.name);
-
-        assert_eq!(icon, format!("{}{}", "\u{f016}", ICON_SPACE)); // 
-    }
-
-    #[test]
-    fn get_default_file_icon_unicode() {
-        let tmp_dir = TempDir::new("test_file_type").expect("failed to create temp dir");
-        let file_path = tmp_dir.path().join("file");
-        File::create(&file_path).expect("failed to create file");
-        let meta = Meta::from_path(&file_path).unwrap();
-
-        let icon = Icons::new(Theme::Unicode);
-        let icon = icon.get(&meta.name);
-
-        assert_eq!(icon, format!("{}{}", "\u{1f5cb}", ICON_SPACE));
-    }
-
-    #[test]
-    fn get_directory_icon() {
-        let tmp_dir = TempDir::new("test_file_type").expect("failed to create temp dir");
-        let file_path = tmp_dir.path();
-        let meta = Meta::from_path(&file_path.to_path_buf()).unwrap();
-
-        let icon = Icons::new(Theme::Fancy);
-        let icon = icon.get(&meta.name);
-
-        assert_eq!(icon, format!("{}{}", "\u{f115}", ICON_SPACE)); // 
-    }
-
-    #[test]
-    fn get_directory_icon_unicode() {
-        let tmp_dir = TempDir::new("test_file_type").expect("failed to create temp dir");
-        let file_path = tmp_dir.path();
-        let meta = Meta::from_path(&file_path.to_path_buf()).unwrap();
-
-        let icon = Icons::new(Theme::Unicode);
-        let icon = icon.get(&meta.name);
-
-        assert_eq!(icon, format!("{}{}", "\u{1f5c1}", ICON_SPACE));
-    }
-
-    #[test]
-    fn get_directory_icon_with_ext() {
-        let tmp_dir = TempDir::new("test_file_type.rs").expect("failed to create temp dir");
-        let file_path = tmp_dir.path();
-        let meta = Meta::from_path(&file_path.to_path_buf()).unwrap();
-
-        let icon = Icons::new(Theme::Fancy);
-        let icon = icon.get(&meta.name);
-
-        assert_eq!(icon, format!("{}{}", "\u{f115}", ICON_SPACE)); // 
-    }
-
-    #[test]
-    fn get_icon_by_name() {
-        let tmp_dir = TempDir::new("test_file_type").expect("failed to create temp dir");
-
-        for (file_name, file_icon) in &Icons::get_default_icons_by_name() {
-            let file_path = tmp_dir.path().join(file_name);
-            File::create(&file_path).expect("failed to create file");
-            let meta = Meta::from_path(&file_path).unwrap();
-
-            let icon = Icons::new(Theme::Fancy);
-            let icon = icon.get(&meta.name);
-
-            assert_eq!(icon, format!("{}{}", file_icon, ICON_SPACE));
-        }
-    }
-
-    #[test]
-    fn get_icon_by_extension() {
-        let tmp_dir = TempDir::new("test_file_type").expect("failed to create temp dir");
-
-        for (ext, file_icon) in &Icons::get_default_icons_by_extension() {
-            let file_path = tmp_dir.path().join(format!("file.{}", ext));
-            File::create(&file_path).expect("failed to create file");
-            let meta = Meta::from_path(&file_path).unwrap();
-
-            let icon = Icons::new(Theme::Fancy);
-            let icon = icon.get(&meta.name);
-
-            assert_eq!(icon, format!("{}{}", file_icon, ICON_SPACE));
-        }
-    }
-}

src/stats.rs

@@ -58,19 +58,21 @@ impl FsStat {
 }
 
 pub trait FsExt {
-    fn get_dev(&self) -> String;
+    fn get_dev(&self) -> Option<String>;
     fn get_total(&self) -> String;
     fn get_free(&self) -> String;
 }
 
 impl FsExt for Filesystem {
-    fn get_dev(&self) -> String {
+    fn get_dev(&self) -> Option<String> {
         let path = PathBuf::from(&self.fs_mounted_from);
-        let dev = match path.components().last() {
-            Some(Component::Normal(dev)) => dev.to_string_lossy().to_string() + ": ",
+        let dev = path.components().last()?;
+        let dev = match dev {
+            Component::Normal(dev) => dev.to_string_lossy().to_string() + ": ",
+            // zfs on FBSD doesn't return a device path
             _ => "".to_string()
         };
-        dev
+        Some(dev)
     }
 
     fn get_total(&self) -> String {

src/textview.rs

@@ -1,4 +1,4 @@
-use std::io::BufRead;
+use std::io::{BufRead, BufReader};
 
 use crate::files::File;
 use crate::term::sized_string;
@@ -42,8 +42,8 @@ impl TextView {
     pub fn new_from_file_limit_lines(core: &WidgetCore,
                                      file: &File,
                                      num: usize) -> HResult<TextView> {
-        let file = std::fs::File::open(&file.path).unwrap();
-        let file = std::io::BufReader::new(file);
+        let file = std::fs::File::open(&file.path)?;
+        let file = BufReader::new(file);
         let lines = file.lines()
                         .take(num)
                         .map(|line|