fix(clippy): put test module last in file

src/undirected/kruskal.rs

@@ -14,26 +14,6 @@ fn find(parents: &mut [usize], mut node: usize) -> usize {
     node
 }
 
-#[cfg(test)]
-mod tests {
-    use super::find;
-
-    #[test]
-    fn path_halving() {
-        let mut parents = vec![0, 0, 1, 2, 3, 4, 5, 6];
-        assert_eq!(find(&mut parents, 7), 0);
-        assert_eq!(parents, vec![0, 0, 1, 1, 3, 3, 5, 5]);
-        assert_eq!(find(&mut parents, 7), 0);
-        assert_eq!(parents, vec![0, 0, 1, 0, 3, 3, 5, 3]);
-        assert_eq!(find(&mut parents, 7), 0);
-        assert_eq!(parents, vec![0, 0, 1, 0, 3, 3, 5, 0]);
-        assert_eq!(find(&mut parents, 6), 0);
-        assert_eq!(parents, vec![0, 0, 1, 0, 3, 3, 3, 0]);
-        assert_eq!(find(&mut parents, 6), 0);
-        assert_eq!(parents, vec![0, 0, 1, 0, 3, 3, 0, 0]);
-    }
-}
-
 fn union(parents: &mut [usize], ranks: &mut [usize], mut a: usize, mut b: usize) {
     if ranks[a] < ranks[b] {
         mem::swap(&mut a, &mut b);
@@ -98,3 +78,23 @@ where
         ))
     })
 }
+
+#[cfg(test)]
+mod tests {
+    use super::find;
+
+    #[test]
+    fn path_halving() {
+        let mut parents = vec![0, 0, 1, 2, 3, 4, 5, 6];
+        assert_eq!(find(&mut parents, 7), 0);
+        assert_eq!(parents, vec![0, 0, 1, 1, 3, 3, 5, 5]);
+        assert_eq!(find(&mut parents, 7), 0);
+        assert_eq!(parents, vec![0, 0, 1, 0, 3, 3, 5, 3]);
+        assert_eq!(find(&mut parents, 7), 0);
+        assert_eq!(parents, vec![0, 0, 1, 0, 3, 3, 5, 0]);
+        assert_eq!(find(&mut parents, 6), 0);
+        assert_eq!(parents, vec![0, 0, 1, 0, 3, 3, 3, 0]);
+        assert_eq!(find(&mut parents, 6), 0);
+        assert_eq!(parents, vec![0, 0, 1, 0, 3, 3, 0, 0]);
+    }
+}