Clippy fixes

tests/test_chunks.rs

@@ -21,7 +21,7 @@ where
     let pixels_raw = cast_slice::<_, u8>(pixels);
     let encoded = encode_to_vec(pixels_raw, pixels.len() as _, 1).unwrap();
     let decoded = decode_to_vec(&encoded).unwrap().1;
-    assert_eq!(pixels_raw, decoded.as_slice(), "roundtrip failed (encoded={:?}))", encoded);
+    assert_eq!(pixels_raw, decoded.as_slice(), "roundtrip failed (encoded={encoded:?}))");
     assert!(encoded.len() >= expected.len() + QOI_HEADER_SIZE + QOI_PADDING_SIZE);
     assert_eq!(&encoded[QOI_HEADER_SIZE..][..expected.len()], expected);
 }

tests/test_gen.rs

@@ -36,8 +36,8 @@ impl<const N: usize> GenState<N> {
     }
     pub fn write(&mut self, px: [u8; N]) {
         self.index[hash(px) as usize] = px;
-        for i in 0..N {
-            self.pixels.push(px[i]);
+        for px in px.into_iter().take(N) {
+            self.pixels.push(px);
         }
         self.prev = px;
         self.len += 1;

tests/test_ref.rs

@@ -62,27 +62,25 @@ impl Image {
 fn compare_slices(name: &str, desc: &str, result: &[u8], expected: &[u8]) -> Result<()> {
     if result == expected {
         Ok(())
+    } else if let Some(i) =
+        (0..result.len().min(expected.len())).position(|i| result[i] != expected[i])
+    {
+        panic!(
+            "{}: {} mismatch at byte {}: expected {:?}, got {:?}",
+            name,
+            desc,
+            i,
+            &expected[i..(i + 4).min(expected.len())],
+            &result[i..(i + 4).min(result.len())],
+        );
     } else {
-        if let Some(i) =
-            (0..result.len().min(expected.len())).position(|i| result[i] != expected[i])
-        {
-            panic!(
-                "{}: {} mismatch at byte {}: expected {:?}, got {:?}",
-                name,
-                desc,
-                i,
-                &expected[i..(i + 4).min(expected.len())],
-                &result[i..(i + 4).min(result.len())],
-            );
-        } else {
-            panic!(
-                "{}: {} length mismatch: expected {}, got {}",
-                name,
-                desc,
-                expected.len(),
-                result.len()
-            );
-        }
+        panic!(
+            "{}: {} length mismatch: expected {}, got {}",
+            name,
+            desc,
+            expected.len(),
+            result.len()
+        );
     }
 }