Fix tests

collector/netdev_test.go

@@ -0,0 +1,27 @@
+package collector
+
+import (
+	"os"
+	"testing"
+)
+
+func TestNetDevStats(t *testing.T) {
+	file, err := os.Open("fixtures/net-dev")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer file.Close()
+
+	netStats, err := parseNetDevStats(file)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if want, got := "10437182923", netStats["receive"]["wlan0"]["bytes"]; want != got {
+		t.Errorf("want netstat wlan0 bytes %s, got %s", want, got)
+	}
+
+	if want, got := "934", netStats["transmit"]["tun0"]["packets"]; want != got {
+		t.Errorf("want netstat tun0 packets %s, got %s", want, got)
+	}
+}