protocol: Add v0v1 server protocol and its receivepack subprotocol

1 files changed, 101 insertions, 0 deletions

diff --git a/protocol/v0v1/server/advertise_test.go b/protocol/v0v1/server/advertise_test.go
new file mode 100644
index 00000000..91526617
--- /dev/null
+++ b/protocol/v0v1/server/advertise_test.go
@@ -0,0 +1,101 @@
+package server_test
+
+import (
+	"strings"
+	"testing"
+
+	"codeberg.org/lindenii/furgit/internal/testgit"
+	"codeberg.org/lindenii/furgit/objectid"
+	server "codeberg.org/lindenii/furgit/protocol/v0v1/server"
+)
+
+func TestAdvertiseRefsWritesVersionOneHeadCapsAndPeeledTag(t *testing.T) {
+	t.Parallel()
+
+	//nolint:thelper
+	testgit.ForEachAlgorithm(t, func(t *testing.T, algo objectid.Algorithm) {
+		t.Parallel()
+
+		headID := mustHexID(t, algo, "1")
+		tagID := mustHexID(t, algo, "2")
+		peeledID := mustHexID(t, algo, "3")
+		mainID := mustHexID(t, algo, "4")
+
+		var out bufferWriteFlusher
+
+		session := server.NewSession(
+			strings.NewReader(""),
+			&out,
+			server.Options{
+				Version:   server.Version1,
+				Algorithm: algo,
+			},
+		)
+
+		err := session.AdvertiseRefs(server.Advertisement{
+			Refs: []server.AdvertisedRef{
+				{Name: "refs/tags/v1", ID: tagID, Peeled: &peeledID},
+				{Name: "HEAD", ID: headID},
+				{Name: "refs/heads/main", ID: mainID},
+			},
+		}, []string{
+			"report-status",
+			"delete-refs",
+			"object-format=" + algo.String(),
+			"agent=furgit-test/1",
+		})
+		if err != nil {
+			t.Fatalf("AdvertiseRefs: %v", err)
+		}
+
+		got := out.String()
+		wantParts := []string{
+			"000eversion 1\n",
+			headID.String() + " HEAD\x00report-status delete-refs object-format=" + algo.String() + " agent=furgit-test/1\n",
+			mainID.String() + " refs/heads/main\n",
+			tagID.String() + " refs/tags/v1\n",
+			peeledID.String() + " refs/tags/v1^{}\n",
+			"0000",
+		}
+
+		for _, part := range wantParts {
+			if !strings.Contains(got, part) {
+				t.Fatalf("advertisement missing %q in %q", part, got)
+			}
+		}
+	})
+}
+
+func TestAdvertiseRefsWritesNoRefsCapabilitiesLine(t *testing.T) {
+	t.Parallel()
+
+	//nolint:thelper
+	testgit.ForEachAlgorithm(t, func(t *testing.T, algo objectid.Algorithm) {
+		t.Parallel()
+
+		var out bufferWriteFlusher
+
+		session := server.NewSession(
+			strings.NewReader(""),
+			&out,
+			server.Options{
+				Algorithm: algo,
+			},
+		)
+
+		err := session.AdvertiseRefs(server.Advertisement{}, []string{
+			"report-status",
+			"object-format=" + algo.String(),
+		})
+		if err != nil {
+			t.Fatalf("AdvertiseRefs: %v", err)
+		}
+
+		got := out.String()
+
+		want := objectid.Zero(algo).String() + " capabilities^{}\x00report-status object-format=" + algo.String() + "\n"
+		if !strings.Contains(got, want) {
+			t.Fatalf("unexpected no-refs advertisement %q", got)
+		}
+	})
+}