Fix bug in preauthkeys: namespace object was not populated in the return

value from CreatePreAuthKey and GetPreAuthKeys. Add tests for that bug,
and the rest of the preauthkeys functionality.

Fix path in `compress` Makefile target.

preauth_keys_test.go

@@ -0,0 +1,75 @@
+package headscale
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"testing"
+
+	_ "github.com/jinzhu/gorm/dialects/sqlite" // sql driver
+
+	"gopkg.in/check.v1"
+)
+
+func Test(t *testing.T) {
+	check.TestingT(t)
+}
+
+var _ = check.Suite(&Suite{})
+
+type Suite struct{}
+
+var tmpDir string
+var h Headscale
+
+func (s *Suite) SetUpSuite(c *check.C) {
+	var err error
+	tmpDir, err = ioutil.TempDir("", "autoygg-client-test")
+	if err != nil {
+		c.Fatal(err)
+	}
+	fmt.Printf("tmpDir is %s\n", tmpDir)
+	cfg := Config{}
+
+	h = Headscale{
+		cfg:      cfg,
+		dbType:   "sqlite3",
+		dbString: tmpDir + "/headscale_test.db",
+	}
+	err = h.initDB()
+	if err != nil {
+		c.Fatal(err)
+	}
+}
+
+func (s *Suite) TearDownSuite(c *check.C) {
+	os.RemoveAll(tmpDir)
+}
+
+func (*Suite) TestCreatePreAuthKey(c *check.C) {
+	_, err := h.CreatePreAuthKey("bogus", true, nil)
+	c.Assert(err, check.NotNil)
+
+	n, err := h.CreateNamespace("test")
+	c.Assert(err, check.IsNil)
+
+	k, err := h.CreatePreAuthKey(n.Name, true, nil)
+	c.Assert(err, check.IsNil)
+
+	// Did we get a valid key?
+	c.Assert(k.Key, check.NotNil)
+	c.Assert(len(k.Key), check.Equals, 48)
+
+	// Make sure the Namespace association is populated
+	c.Assert(k.Namespace.Name, check.Equals, n.Name)
+
+	_, err = h.GetPreAuthKeys("bogus")
+	c.Assert(err, check.NotNil)
+
+	keys, err := h.GetPreAuthKeys(n.Name)
+	c.Assert(err, check.IsNil)
+	c.Assert(len(*keys), check.Equals, 1)
+
+	// Make sure the Namespace association is populated
+	c.Assert((*keys)[0].Namespace.Name, check.Equals, n.Name)
+}