From 249e2f60913f016230fd8efc1a9571224339cac2 Mon Sep 17 00:00:00 2001
From: semihbkgr <buyukgungorsemih@gmail.com>
Date: Mon, 18 Dec 2023 20:36:47 +0300
Subject: [PATCH 1/2] check size parameter if positive value in new function

---
 map.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/map.go b/map.go
index bf27f8d..99b69fd 100644
--- a/map.go
+++ b/map.go
@@ -64,7 +64,7 @@ type (
 func New[K hashable, V any](size ...uintptr) *Map[K, V] {
 	m := &Map[K, V]{listHead: newListHead[K, V]()}
 	m.numItems.Store(0)
-	if len(size) > 0 {
+	if len(size) > 0 && size[0] > 0 {
 		m.allocate(size[0])
 	} else {
 		m.allocate(defaultSize)

From 33dd687afd9934d23ece21df1fdda669cab9d2f5 Mon Sep 17 00:00:00 2001
From: semihbkgr <buyukgungorsemih@gmail.com>
Date: Mon, 18 Dec 2023 20:52:31 +0300
Subject: [PATCH 2/2] add test for creating map when zero size is provided

---
 e2e_test.go | 8 ++++++++
 map.go      | 2 +-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/e2e_test.go b/e2e_test.go
index a0c59fa..cbe71d2 100644
--- a/e2e_test.go
+++ b/e2e_test.go
@@ -19,6 +19,14 @@ func TestMapCreation(t *testing.T) {
 	if m.Len() != 0 {
 		t.Errorf("new map should be empty but has %d items.", m.Len())
 	}
+
+	t.Run("default size is used when zero is provided", func(t *testing.T) {
+		m := New[int, int](0)
+		index := m.metadata.Load().index
+		if len(index) != defaultSize {
+			t.Error("map index size is not as expected")
+		}
+	})
 }
 
 func TestOverwrite(t *testing.T) {
diff --git a/map.go b/map.go
index 99b69fd..dd2ff2a 100644
--- a/map.go
+++ b/map.go
@@ -64,7 +64,7 @@ type (
 func New[K hashable, V any](size ...uintptr) *Map[K, V] {
 	m := &Map[K, V]{listHead: newListHead[K, V]()}
 	m.numItems.Store(0)
-	if len(size) > 0 && size[0] > 0 {
+	if len(size) > 0 && size[0] != 0 {
 		m.allocate(size[0])
 	} else {
 		m.allocate(defaultSize)