From fb4019575dd1cfbfe22b24efeef6bf82faa936e8 Mon Sep 17 00:00:00 2001
From: Abhishek Upperwal <a.upperwal@gmail.com>
Date: Thu, 26 Jul 2018 01:08:20 +0530
Subject: [PATCH] Added test for DefaultListenAddrs

---
 libp2p_test.go | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/libp2p_test.go b/libp2p_test.go
index 1b38bbc..f4f4427 100644
--- a/libp2p_test.go
+++ b/libp2p_test.go
@@ -8,6 +8,7 @@ import (
 
 	crypto "github.com/libp2p/go-libp2p-crypto"
 	host "github.com/libp2p/go-libp2p-host"
+	"github.com/libp2p/go-tcp-transport"
 )
 
 func TestNewHost(t *testing.T) {
@@ -39,6 +40,39 @@ func TestInsecure(t *testing.T) {
 	h.Close()
 }
 
+func TestDefaultListenAddrs(t *testing.T) {
+	ctx := context.Background()
+
+	// Test 1: Listen addr should not set if user defined transport is passed.
+	h, err := New(
+		ctx,
+		Transport(tcp.TcpTransport{}),
+	)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if len(h.Addrs()) != 0 {
+		t.Error("expected zero listen addrs as none is set with user defined transport")
+	}
+	h.Close()
+
+	// Test 2: User defined listener addrs should overwrite the default options.
+	h, err = New(
+		ctx,
+		Transport(tcp.TcpTransport{}),
+		ListenAddrStrings("/ip4/127.0.0.1/tcp/0"),
+	)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if len(h.Addrs()) != 1 {
+		t.Error("expected one listen addr")
+	}
+	h.Close()
+}
+
 func makeRandomHost(t *testing.T, port int) (host.Host, error) {
 	ctx := context.Background()
 	priv, _, err := crypto.GenerateKeyPair(crypto.RSA, 2048)
-- 
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