ident: implement full representation

This can be used with both system and member identifiers.

Signed-off-by: Yonah <contrib@gensokyo.uk>

ident/ident_test.go

@@ -5,7 +5,9 @@ import (
 	"encoding/base64"
 	"fmt"
 	"reflect"
+	"strings"
 	"testing"
+	"time"
 
 	"git.gensokyo.uk/cofront/cof-spec/ident"
 )
@@ -76,6 +78,74 @@ func (testCases rTestCases[V, S]) run(t *testing.T) {
 	}
 }
 
+func TestFS(t *testing.T) {
+	t.Parallel()
+
+	rTestCases[ident.F[ident.S, *ident.S], *ident.F[ident.S, *ident.S]]{
+		{"separator", ident.F[ident.S, *ident.S]{}, nil, ident.ErrSeparator},
+		{"bad ident", ident.F[ident.S, *ident.S]{}, []byte(
+			strings.Repeat("=", ident.EncodedSizeSystem) + ":",
+		), base64.CorruptInputError(0)},
+
+		{"valid", ident.F[ident.S, *ident.S]{
+			I: &ident.S{
+				Site: ident.TrivialSite,
+				Host: ident.TrivialHost,
+
+				Time: uint64(time.Date(
+					0xfd, 7, 15,
+					23, 59, 59, 0xcafe,
+					time.UTC,
+				).UnixNano()),
+
+				ID: 0xfee1dead0badf00d,
+			},
+
+			Remote: mustNewRemote("gensokyo.uk"),
+		}, []byte("_srt_r66_sr-AEPO8ZJKEA3wrQut3uH-:gensokyo.uk"), nil},
+	}.run(t)
+}
+
+func TestFM(t *testing.T) {
+	t.Parallel()
+
+	rTestCases[ident.F[ident.M, *ident.M], *ident.F[ident.M, *ident.M]]{
+		{"separator", ident.F[ident.M, *ident.M]{}, nil, ident.ErrSeparator},
+		{"bad ident", ident.F[ident.M, *ident.M]{}, []byte(
+			strings.Repeat("=", ident.EncodedSizeMember) + ":",
+		), base64.CorruptInputError(0)},
+
+		{"valid", ident.F[ident.M, *ident.M]{
+			I: &ident.M{
+				Serial: 0xfdfdfdfdfdfdfdfd,
+
+				Time: uint64(time.Date(
+					0xfd, 7, 15,
+					23, 59, 59, 0xcab,
+					time.UTC,
+				).UnixNano()),
+
+				ID: 0x2e736e64,
+
+				System: ident.S{
+					Site: ident.TrivialSite,
+					Host: ident.TrivialHost,
+
+					Time: uint64(time.Date(
+						0xfd, 7, 15,
+						23, 59, 59, 0xcafe,
+						time.UTC,
+					).UnixNano()),
+
+					ID: 0xfee1dead0badf00d,
+				},
+			},
+
+			Remote: mustNewRemote("gensokyo.uk"),
+		}, []byte("_f39_f39_f2rQkLO8ZJKEGRucy4AAAAA_srt_r66_sr-AEPO8ZJKEA3wrQut3uH-:gensokyo.uk"), nil},
+	}.run(t)
+}
+
 func TestErrors(t *testing.T) {
 	t.Parallel()