Remove superfluous test support code. Fix bug in node list cli command.

Add tests.

cli_test.go

@@ -0,0 +1,36 @@
+package headscale
+
+import (
+	"gopkg.in/check.v1"
+)
+
+func (s *Suite) TestRegisterMachine(c *check.C) {
+	n, err := h.CreateNamespace("test")
+	c.Assert(err, check.IsNil)
+
+	db, err := h.db()
+	if err != nil {
+		c.Fatal(err)
+	}
+	defer db.Close()
+
+	m := Machine{
+		ID:          0,
+		MachineKey:  "8ce002a935f8c394e55e78fbbb410576575ff8ec5cfa2e627e4b807f1be15b0e",
+		NodeKey:     "bar",
+		DiscoKey:    "faa",
+		Name:        "testmachine",
+		NamespaceID: n.ID,
+	}
+	db.Save(&m)
+
+	_, err = h.GetMachine("test", "testmachine")
+	c.Assert(err, check.IsNil)
+
+	m2, err := h.RegisterMachine("8ce002a935f8c394e55e78fbbb410576575ff8ec5cfa2e627e4b807f1be15b0e", n.Name)
+	c.Assert(err, check.IsNil)
+	c.Assert(m2.Registered, check.Equals, true)
+
+	_, err = m2.GetHostInfo()
+	c.Assert(err, check.IsNil)
+}