From 962e53af1768b8b7fafe42ec1b7bfeab92c2be9f Mon Sep 17 00:00:00 2001
From: James Mills <1290234+prologic@users.noreply.github.com>
Date: Thu, 21 Mar 2019 10:24:30 +1000
Subject: [PATCH] Add Has() to exported API (extended API)

---
 bitcask.go      | 5 +++++
 bitcask_test.go | 4 ++++
 2 files changed, 9 insertions(+)

diff --git a/bitcask.go b/bitcask.go
index b1f27c5..77d7d62 100644
--- a/bitcask.go
+++ b/bitcask.go
@@ -79,6 +79,11 @@ func (b *Bitcask) Get(key string) ([]byte, error) {
 	return e.Value, nil
 }
 
+func (b *Bitcask) Has(key string) bool {
+	_, ok := b.keydir.Get(key)
+	return ok
+}
+
 func (b *Bitcask) Put(key string, value []byte) error {
 	if len(key) > b.config.MaxKeySize {
 		return ErrKeyTooLarge
diff --git a/bitcask_test.go b/bitcask_test.go
index 98350a4..b6aa0f2 100644
--- a/bitcask_test.go
+++ b/bitcask_test.go
@@ -40,6 +40,10 @@ func TestAll(t *testing.T) {
 		assert.Equal([]byte("bar"), val)
 	})
 
+	t.Run("Has", func(t *testing.T) {
+		assert.True(db.Has("foo"))
+	})
+
 	t.Run("Fold", func(t *testing.T) {
 		var (
 			keys   []string