test for ::default()

yegor256 · Apr 25, 2023 · a68142d · a68142d
1 parent a30bfda
commit a68142d
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Showing 2 changed files with 13 additions and 6 deletions.
diff --git a/src/ctors.rs b/src/ctors.rs
@@ -21,6 +21,12 @@
 use crate::{Map, Pair};
 use std::mem::MaybeUninit;
 
+impl<K: Clone + PartialEq, V: Clone, const N: usize> Default for Map<K, V, N> {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl<K: Clone + PartialEq, V: Clone, const N: usize> Map<K, V, N> {
     /// Make it.
     #[inline]
@@ -39,6 +45,13 @@ impl<K: Clone + PartialEq, V: Clone, const N: usize> Map<K, V, N> {
 #[cfg(test)]
 use anyhow::Result;
 
+#[test]
+fn makes_default_map() -> Result<()> {
+    let m: Map<u8, u8, 8> = Map::default();
+    assert_eq!(0, m.len());
+    Ok(())
+}
+
 #[test]
 fn makes_new_map() -> Result<()> {
     let m: Map<u8, u8, 8> = Map::new();

diff --git a/src/map.rs b/src/map.rs
@@ -23,12 +23,6 @@ use crate::{IntoIter, Iter, Map};
 use std::borrow::Borrow;
 use std::mem::MaybeUninit;
 
-impl<K: Clone + PartialEq, V: Clone, const N: usize> Default for Map<K, V, N> {
-    fn default() -> Self {
-        Self::new()
-    }
-}
-
 impl<K: PartialEq + Clone, V: Clone, const N: usize> Map<K, V, N> {
     /// Make an iterator over all pairs.
     #[inline]