From d8159ca20075ecf718f6bc868ac46332ddd08a50 Mon Sep 17 00:00:00 2001
From: k1LoW <k1lowxb@gmail.com>
Date: Mon, 1 Apr 2024 15:02:39 +0900
Subject: [PATCH] Add DelKV for delete key-value pair by key

---
 kv.go       |  6 ++++++
 kv_test.go  | 19 ++++++++++++++++++-
 operator.go |  5 +++++
 3 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/kv.go b/kv.go
index 5943293a..29b66f4c 100644
--- a/kv.go
+++ b/kv.go
@@ -27,6 +27,12 @@ func (kv *kv) get(k string) any { //nostyle:getters
 	return v
 }
 
+func (kv *kv) del(k string) {
+	kv.mu.RLock()
+	defer kv.mu.RUnlock()
+	delete(kv.m, k)
+}
+
 func (kv *kv) clear() {
 	kv.mu.Lock()
 	defer kv.mu.Unlock()
diff --git a/kv_test.go b/kv_test.go
index 0e307b7e..bf0a027e 100644
--- a/kv_test.go
+++ b/kv_test.go
@@ -20,7 +20,24 @@ func TestKV(t *testing.T) {
 		{4.5},
 	}
 	for _, tt := range tests {
-		t.Run(fmt.Sprintf("%v", tt.in), func(t *testing.T) {
+		t.Run(fmt.Sprintf("set/get/del %v", tt.in), func(t *testing.T) {
+			kv := newKV()
+			kv.set("key", tt.in)
+			got := kv.get("key")
+			if diff := cmp.Diff(got, tt.in); diff != "" {
+				t.Error(diff)
+			}
+
+			{
+				kv.del("key")
+				got := kv.get("key")
+				if got != nil {
+					t.Errorf("got %v, want %v", got, nil)
+				}
+			}
+		})
+
+		t.Run(fmt.Sprintf("set/get/clear %v", tt.in), func(t *testing.T) {
 			kv := newKV()
 			kv.set("key", tt.in)
 			got := kv.get("key")
diff --git a/operator.go b/operator.go
index dfe2a2e9..402b0aae 100644
--- a/operator.go
+++ b/operator.go
@@ -1507,6 +1507,11 @@ func (ops *operators) GetKV(k string) any { //nostyle:getters
 	return ops.kv.get(k)
 }
 
+// DelKV deletes a key-value pair from runn.kv.
+func (ops *operators) DelKV(k string) {
+	ops.kv.del(k)
+}
+
 // ClearKV clears all key-value pairs in runn.kv.
 func (ops *operators) Clear() {
 	ops.kv.clear()