Refactor - now wireguard based. (#7)

peer/network_state_test.go

@@ -0,0 +1,56 @@
+package peer
+
+import (
+	"net/netip"
+	"path/filepath"
+	"reflect"
+	"testing"
+
+	"vppn/m"
+)
+
+func TestNetworkState_RoundTrip(t *testing.T) {
+	path := filepath.Join(t.TempDir(), "network.json")
+
+	var sign1 [32]byte
+	copy(sign1[:], []byte("0123456789abcdef0123456789abcdef"))
+
+	state := m.NetworkState{Peers: []m.Peer{
+		{
+			PeerIP:     1,
+			Name:       "hub",
+			Addr4:      netip.MustParseAddr("10.11.12.1"),
+			Port:       51820,
+			Relay:      true,
+			WGPubKey:   mustKey(t),
+			SignPubKey: sign1,
+		},
+		{
+			PeerIP:   10,
+			Name:     "laptop",
+			Addr4:    netip.MustParseAddr("10.11.12.10"),
+			Port:     51820,
+			WGPubKey: mustKey(t),
+		},
+	}}
+
+	if err := saveNetworkState(path, state); err != nil {
+		t.Fatal(err)
+	}
+
+	got, err := loadNetworkState(path)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if !reflect.DeepEqual(got, state) {
+		t.Errorf("round-trip mismatch:\n got: %+v\nwant: %+v", got.Peers[1], state.Peers[1])
+	}
+}
+
+func TestNetworkState_LoadMissing(t *testing.T) {
+	path := filepath.Join(t.TempDir(), "does-not-exist.json")
+	if _, err := loadNetworkState(path); err == nil {
+		t.Fatal("expected error loading missing cache, got nil")
+	}
+}