From 5e1bc987de48c7022baf33297c176762f9e681e3 Mon Sep 17 00:00:00 2001
From: James Mills <prologic@shortcircuit.net.au>
Date: Fri, 18 Dec 2020 23:55:13 +1000
Subject: [PATCH] Add test case for Locking after Merge

---
 bitcask_test.go | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/bitcask_test.go b/bitcask_test.go
index 6678e5f..45e35be 100644
--- a/bitcask_test.go
+++ b/bitcask_test.go
@@ -1627,6 +1627,27 @@ func TestLocking(t *testing.T) {
 	assert.Error(err)
 }
 
+func TestLockingAfterMerge(t *testing.T) {
+	assert := assert.New(t)
+
+	testdir, err := ioutil.TempDir("", "bitcask")
+	assert.NoError(err)
+
+	db, err := Open(testdir)
+	assert.NoError(err)
+	defer db.Close()
+
+	_, err = Open(testdir)
+	assert.Error(err)
+
+	err = db.Merge()
+	assert.NoError(err)
+
+	// This should still error.
+	_, err = Open(testdir)
+	assert.Error(err)
+}
+
 type benchmarkTestCase struct {
 	name string
 	size int