Added default icons to Icons struct

Also added tests for unicode icon set

src/icon.rs

@@ -5,6 +5,8 @@ pub struct Icons {
     display_icons: bool,
     icons_by_name: HashMap<&'static str, &'static str>,
     icons_by_extension: HashMap<&'static str, &'static str>,
+    default_folder_icon: &'static str,
+    default_file_icon: &'static str,
 }
 
 #[derive(Debug, Copy, Clone, Eq, PartialEq)]
@@ -23,19 +25,24 @@ const ICON_SPACE: &str = "  ";
 impl Icons {
     pub fn new(theme: Theme) -> Self {
         let display_icons = theme == Theme::Fancy || theme == Theme::Unicode;
-        let (icons_by_name, icons_by_extension) = if theme == Theme::Fancy {
-            (
-                Self::get_default_icons_by_name(),
-                Self::get_default_icons_by_extension(),
-            )
-        } else {
-            (HashMap::new(), HashMap::new())
-        };
+        let (icons_by_name, icons_by_extension, default_file_icon, default_folder_icon) =
+            if theme == Theme::Fancy {
+                (
+                    Self::get_default_icons_by_name(),
+                    Self::get_default_icons_by_extension(),
+                    "\u{f016}",
+                    "\u{f115}",
+                )
+            } else {
+                (HashMap::new(), HashMap::new(), "\u{1F5CB}", "\u{1F5C1}")
+            };
 
         Self {
             display_icons,
             icons_by_name,
             icons_by_extension,
+            default_file_icon,
+            default_folder_icon,
         }
     }
 
@@ -48,7 +55,7 @@ impl Icons {
 
         // Check directory.
         if name.file_type() == FileType::Directory {
-            res += "\u{f115}"; // 
+            res += self.default_folder_icon;
             res += ICON_SPACE;
             return res;
         }
@@ -70,7 +77,7 @@ impl Icons {
         }
 
         // Use the default icons.
-        res += "\u{f016}"; // 
+        res += self.default_file_icon;
         res += ICON_SPACE;
         res
     }
@@ -330,6 +337,21 @@ mod test {
         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 = file_path.metadata().expect("failed to get metas");
+
+        let file_type = FileType::new(&meta, &Permissions::from(&meta));
+        let name = Name::new(&file_path, file_type);
+        let icon = Icons::new(Theme::Unicode);
+        let icon = icon.get(&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");
@@ -344,6 +366,20 @@ mod test {
         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 = file_path.metadata().expect("failed to get metas");
+
+        let file_type = FileType::new(&meta, &Permissions::from(&meta));
+        let name = Name::new(&file_path, file_type);
+        let icon = Icons::new(Theme::Unicode);
+        let icon = icon.get(&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");