From 337741015cc46179fa8886079a416bb2fe4f4845 Mon Sep 17 00:00:00 2001
From: siddharth <s@ricketyspace.net>
Date: Sun, 28 Nov 2021 17:03:18 -0500
Subject: db: update FernDB

Add `mutex` field to the FernDB struct.
---
 db/db_test.go | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'db/db_test.go')

diff --git a/db/db_test.go b/db/db_test.go
index 5a2a983..e2308c1 100644
--- a/db/db_test.go
+++ b/db/db_test.go
@@ -46,6 +46,14 @@ func TestOpenNewDB(t *testing.T) {
 		return
 	}
 
+	// Verify that 'mutex' is initialized.
+	if db.mutex == nil {
+		t.Errorf("db.mutex is nil")
+		return
+	}
+	db.mutex.Lock()
+	db.mutex.Unlock()
+
 	// Verify that 'downloaded' is initialized
 	if db.downloaded == nil {
 		t.Errorf("db.downloaded is nil")
@@ -77,6 +85,14 @@ func TestOpenExistingDB(t *testing.T) {
 		return
 	}
 
+	// Verify that 'mutex' is initialized.
+	if db.mutex == nil {
+		t.Errorf("db.mutex is nil")
+		return
+	}
+	db.mutex.Lock()
+	db.mutex.Unlock()
+
 	// Validate db.downloaded.
 	var entries, expectedEntries []string
 	var ok bool
-- 
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