refactor: code cleanup, stricter config validation (#155)

lib/config_test.go

@@ -0,0 +1,71 @@
+package lib
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func writeAndParseConfig(t *testing.T, content string) *Config {
+	tmpDir := t.TempDir()
+	tmpFile := filepath.Join(tmpDir, "config.yml")
+
+	err := os.WriteFile(tmpFile, []byte(content), 0666)
+	require.NoError(t, err)
+
+	cfg, err := ParseConfig(tmpFile, nil)
+	require.NoError(t, err)
+
+	return cfg
+}
+
+func TestConfigDefaults(t *testing.T) {
+	t.Parallel()
+
+	cfg := writeAndParseConfig(t, "")
+	require.NoError(t, cfg.Validate())
+
+	require.EqualValues(t, []string{"*"}, cfg.CORS.AllowedHeaders)
+	require.EqualValues(t, []string{"*"}, cfg.CORS.AllowedHosts)
+	require.EqualValues(t, []string{"*"}, cfg.CORS.AllowedMethods)
+}
+
+func TestConfigCascade(t *testing.T) {
+	t.Parallel()
+
+	content := `
+auth: true
+scope: /
+modify: true
+rules:
+  - path: /public/access/
+    modify: true
+
+users:
+  - username: admin
+    password: admin
+  - username: basic
+    password: basic
+    scope: /basic
+    modify: false
+    rules: []`
+
+	cfg := writeAndParseConfig(t, content)
+	require.NoError(t, cfg.Validate())
+
+	require.True(t, cfg.Modify)
+	require.Equal(t, "/", cfg.Scope)
+	require.Len(t, cfg.Rules, 1)
+
+	require.Len(t, cfg.Users, 2)
+
+	require.True(t, cfg.Users[0].Modify)
+	require.Equal(t, "/", cfg.Users[0].Scope)
+	require.Len(t, cfg.Users[0].Rules, 1)
+
+	require.False(t, cfg.Users[1].Modify)
+	require.Equal(t, "/basic", cfg.Users[1].Scope)
+	require.Len(t, cfg.Users[1].Rules, 0)
+}