Send netmask from account network (#369)

* Send netmask from account network

Added the GetPeerNetwork method to account manager

Pass a copy of the network to the toPeerConfig function
to retrieve the netmask from the network instead of constant

updated methods and added test

* check if the network is the same for 2 peers

* Use expect with BeEquivalentTo

management/server/peer_test.go

@@ -253,3 +253,69 @@ func TestAccountManager_GetNetworkMapWithRule(t *testing.T) {
 		t.Errorf("expecting Account NetworkMap to have 0 peers, got %v", len(networkMap2.Peers))
 	}
 }
+
+func TestAccountManager_GetPeerNetwork(t *testing.T) {
+	manager, err := createManager(t)
+	if err != nil {
+		t.Fatal(err)
+		return
+	}
+
+	expectedId := "test_account"
+	userId := "account_creator"
+	account, err := createAccount(manager, expectedId, userId, "")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	var setupKey *SetupKey
+	for _, key := range account.SetupKeys {
+		if key.Type == SetupKeyReusable {
+			setupKey = key
+		}
+	}
+
+	peerKey1, err := wgtypes.GeneratePrivateKey()
+	if err != nil {
+		t.Fatal(err)
+		return
+	}
+
+	_, err = manager.AddPeer(setupKey.Key, "", &Peer{
+		Key:  peerKey1.PublicKey().String(),
+		Meta: PeerSystemMeta{},
+		Name: "test-peer-2",
+	})
+
+	if err != nil {
+		t.Errorf("expecting peer to be added, got failure %v", err)
+		return
+	}
+
+	peerKey2, err := wgtypes.GeneratePrivateKey()
+	if err != nil {
+		t.Fatal(err)
+		return
+	}
+	_, err = manager.AddPeer(setupKey.Key, "", &Peer{
+		Key:  peerKey2.PublicKey().String(),
+		Meta: PeerSystemMeta{},
+		Name: "test-peer-2",
+	})
+
+	if err != nil {
+		t.Errorf("expecting peer to be added, got failure %v", err)
+		return
+	}
+
+	network, err := manager.GetPeerNetwork(peerKey1.PublicKey().String())
+	if err != nil {
+		t.Fatal(err)
+		return
+	}
+
+	if account.Network.Id != network.Id {
+		t.Errorf("expecting Account Networks ID to be equal, got %s expected %s", network.Id, account.Network.Id)
+	}
+
+}