all: split reusable components into workspace crates

utils/src/free_list/tests.rs

@@ -0,0 +1,40 @@
+use crate::free_list::FreeList;
+
+#[test]
+fn test() {
+    let list = FreeList::<u32, 3>::default();
+    for i in 0..4097 {
+        assert_eq!(list.acquire(), i);
+    }
+    list.release(100);
+    assert_eq!(list.acquire(), 100);
+    assert_eq!(list.acquire(), 4097);
+    for i in 1..22 {
+        list.release(i);
+    }
+    for i in 1..22 {
+        assert_eq!(list.acquire(), i);
+    }
+    assert_eq!(list.acquire(), 4098);
+    for i in 64..128 {
+        list.release(i);
+    }
+    for i in 64..128 {
+        assert_eq!(list.acquire(), i);
+    }
+    assert_eq!(list.acquire(), 4099);
+    for i in 0..4100 {
+        list.release(i);
+    }
+    for i in 0..4101 {
+        assert_eq!(list.acquire(), i);
+    }
+}
+
+#[test]
+#[should_panic]
+fn release_out_of_bounds() {
+    let list = FreeList::<u32, 3>::default();
+    list.acquire();
+    list.release(500);
+}