LeafList.hashCode() fixed #1818

vavr-io · Jan 16, 2017 · cfa3de4 · cfa3de4
1 parent be0b078
commit cfa3de4
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diff --git a/javaslang/src/main/java/javaslang/collection/HashArrayMappedTrie.java b/javaslang/src/main/java/javaslang/collection/HashArrayMappedTrie.java
@@ -572,7 +572,7 @@ public LeafNode<K, V> getNext() {
 
         @Override
         public int hashCode() {
-            return Objects.hash(hash, value, tail);
+            return Objects.hash(hash, value) + tail.hashCode();
         }
 
         @Override

diff --git a/javaslang/src/test/java/javaslang/collection/HashArrayMappedTrieTest.java b/javaslang/src/test/java/javaslang/collection/HashArrayMappedTrieTest.java
@@ -146,6 +146,7 @@ public void shouldRecognizeNonEqualityOfHAMTOfDifferentSize() {
     public void shouldEqualsIgnoreOrder() {
         HashArrayMappedTrie<String, Integer> map = HashArrayMappedTrie.<String, Integer> empty().put("Aa", 1).put("BB", 2);
         HashArrayMappedTrie<String, Integer> map2 = HashArrayMappedTrie.<String, Integer> empty().put("BB", 2).put("Aa", 1);
+        assertThat(map.hashCode()).isEqualTo(map2.hashCode());
         assertThat(map).isEqualTo(map2);
     }