Refactor collectors

Signed-off-by: Jan-Otto Kröpke <mail@jkroepke.de>

pkg/collector/net/net_test.go

@@ -0,0 +1,19 @@
+//go:build windows
+
+package net
+
+import (
+	"testing"
+)
+
+func TestNetworkToInstanceName(t *testing.T) {
+	data := map[string]string{
+		"Intel[R] Dual Band Wireless-AC 8260": "Intel_R__Dual_Band_Wireless_AC_8260",
+	}
+	for in, out := range data {
+		got := mangleNetworkName(in)
+		if got != out {
+			t.Error("expected", out, "got", got)
+		}
+	}
+}