Rewrite test without a loop

src/lib.rs

@@ -618,17 +618,17 @@ mod tests {
  #[test]
  fn style_for_str() {
  let lscolors = LsColors::from_string("*.wav=00;36:*.rs=1;38;5;202:");
- let files = ["", "test.wav", "test.rs"];
- for file in files {
-  if let Some(style) = lscolors.style_for_str(file) {
-  let color = match file {
-  "test.wav" => Some(Color::Cyan),
-  "test.rs" => Some(Color::Fixed(202)),
-  _ => unreachable!(),
-  };
-  assert_eq!(color, style.foreground);
- }
- }
+
+ assert_eq!(lscolors.style_for_str(""), None);
+ assert_eq!(lscolors.style_for_str("test"), None);
+ assert_eq!(
+ lscolors.style_for_str("test.wav").unwrap().foreground,
+ Some(Color::Cyan)
+ );
+ assert_eq!(
+ lscolors.style_for_str("test.rs").unwrap().foreground,
+ Some(Color::Fixed(202))
+ );
  }
 
  #[test]