Add a very simple test.

cmd/headscale/headscale_test.go

@@ -0,0 +1,56 @@
+package main
+
+import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/spf13/viper"
+	"gopkg.in/check.v1"
+)
+
+func Test(t *testing.T) {
+	check.TestingT(t)
+}
+
+var _ = check.Suite(&Suite{})
+
+type Suite struct{}
+
+func (s *Suite) SetUpSuite(c *check.C) {
+}
+
+func (s *Suite) TearDownSuite(c *check.C) {
+
+}
+
+func (*Suite) TestConfigLoading(c *check.C) {
+	tmpDir, err := ioutil.TempDir("", "headscale")
+	if err != nil {
+		c.Fatal(err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	path, err := os.Getwd()
+	if err != nil {
+		c.Fatal(err)
+	}
+
+	// Symlink the example config file
+	err = os.Symlink(filepath.Clean(path+"/../../config.json.example"), filepath.Join(tmpDir, "config.json"))
+	if err != nil {
+		c.Fatal(err)
+	}
+
+	// Load config
+	loadConfig(tmpDir)
+
+	// Test that config file was interpreted correctly
+	c.Assert(viper.GetString("server_url"), check.Equals, "http://192.168.1.12:8000")
+	c.Assert(viper.GetString("listen_addr"), check.Equals, "0.0.0.0:8000")
+	c.Assert(viper.GetString("derp_map_path"), check.Equals, "derp.yaml")
+	c.Assert(viper.GetString("db_port"), check.Equals, "5432")
+	c.Assert(viper.GetString("tls_letsencrypt_hostname"), check.Equals, "")
+	c.Assert(viper.GetString("tls_letsencrypt_challenge_type"), check.Equals, "HTTP-01")
+}