Improving network_test.go ...

This way we don't need a real wifi card

openwrt/network.go

@@ -37,11 +37,15 @@ func (n *Network) ListInterfaces() []net.Interface {
 }
 
 // ListWirelessInterfaces list all wifi cards
-func (n *Network) ListWirelessInterfaces() []net.Interface {
+// you need to provide the wireless file or "" to use
+// Linux default one "/proc/net/wireless"
+func (n *Network) ListWirelessInterfaces(wifiFile string) []net.Interface {
 	var result []net.Interface
 	var ifaceNames []string
 
-	wifiFile := "/proc/net/wireless"
+	if wifiFile == "" {
+		wifiFile = "/proc/net/wireless"
+	}
 
 	wifiFileContent, err := ioutil.ReadFile(wifiFile)
 	check(err)

openwrt/network_test.go

@@ -15,7 +15,7 @@ func TestNetworkListInterfaces(t *testing.T) {
 
 func TestListWirelessInterfaces(t *testing.T) {
 	net := NewNetwork()
-	res := net.ListWirelessInterfaces()
+	res := net.ListWirelessInterfaces("./testdata/proc_net_wireless.txt")
 	for _, el := range res {
 		fmt.Printf("%s\n", el.Name)
 	}