[#199] Use default value if config param is unset after SIGHUP

Signed-off-by: Marina Biryukova <m.biryukova@yadro.com>

cmd/http-gw/settings_test.go

@@ -0,0 +1,60 @@
+package main
+
+import (
+	"os"
+	"testing"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/resolver"
+	"github.com/stretchr/testify/require"
+)
+
+func TestConfigReload(t *testing.T) {
+	f, err := os.CreateTemp("", "conf")
+	require.NoError(t, err)
+	defer func() {
+		require.NoError(t, os.Remove(f.Name()))
+	}()
+
+	confData := `
+pprof:
+  enabled: true
+
+resolve_bucket:
+  default_namespaces: [""]
+
+resolve_order:
+  - nns
+`
+
+	_, err = f.WriteString(confData)
+	require.NoError(t, err)
+	require.NoError(t, f.Close())
+
+	cfg := settings()
+
+	require.NoError(t, cfg.flags.Parse([]string{"--config", f.Name(), "--connect_timeout", "15s"}))
+	require.NoError(t, cfg.reload())
+
+	require.True(t, cfg.config().GetBool(cfgPprofEnabled))
+	require.Equal(t, []string{""}, cfg.config().GetStringSlice(cfgResolveDefaultNamespaces))
+	require.Equal(t, []string{resolver.NNSResolver}, cfg.config().GetStringSlice(cfgResolveOrder))
+	require.Equal(t, 15*time.Second, cfg.config().GetDuration(cfgConTimeout))
+
+	require.NoError(t, os.Truncate(f.Name(), 0))
+	require.NoError(t, cfg.reload())
+
+	require.False(t, cfg.config().GetBool(cfgPprofEnabled))
+	require.Equal(t, []string{"", "root"}, cfg.config().GetStringSlice(cfgResolveDefaultNamespaces))
+	require.Equal(t, []string{resolver.NNSResolver, resolver.DNSResolver}, cfg.config().GetStringSlice(cfgResolveOrder))
+	require.Equal(t, 15*time.Second, cfg.config().GetDuration(cfgConTimeout))
+}
+
+func TestSetTLSEnabled(t *testing.T) {
+	cfg := settings()
+
+	require.NoError(t, cfg.flags.Parse([]string{"--" + cfgTLSCertFile, "tls.crt", "--" + cfgTLSKeyFile, "tls.key"}))
+	require.NoError(t, cfg.reload())
+
+	require.True(t, cfg.config().GetBool(cfgServer+".0."+cfgTLSEnabled))
+}