From bf1b8cf0338b427af3885f4f318b5ab144bc6a05 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Devrim=20=C5=9Eahin?= <devrim.sahin@picussecurity.com>
Date: Thu, 8 Feb 2024 21:07:11 +0300
Subject: [PATCH] Avoid concrete net.Dialer type for easier mocking

---
 pop3.go | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/pop3.go b/pop3.go
index 6d4c876..e7e313a 100644
--- a/pop3.go
+++ b/pop3.go
@@ -18,7 +18,7 @@ import (
 // Client implements a Client e-mail client.
 type Client struct {
 	opt    Opt
-	dialer *net.Dialer
+	dialer Dialer
 }
 
 // Conn is a stateful connection with the POP3 server/
@@ -35,12 +35,16 @@ type Opt struct {
 
 	// Default is 3 seconds.
 	DialTimeout time.Duration `json:"dial_timeout"`
-	Dialer      *net.Dialer   `json:"-"`
+	Dialer      Dialer        `json:"-"`
 
 	TLSEnabled    bool `json:"tls_enabled"`
 	TLSSkipVerify bool `json:"tls_skip_verify"`
 }
 
+type Dialer interface {
+	Dial(network, address string) (net.Conn, error)
+}
+
 // MessageID contains the ID and size of an individual message.
 type MessageID struct {
 	// ID is the numerical index (non-unique) of the message.