diff --git a/routers/api/v1/activitypub/repository_test.go b/routers/api/v1/activitypub/repository_test.go
new file mode 100644
index 0000000000..baf5d22096
--- /dev/null
+++ b/routers/api/v1/activitypub/repository_test.go
@@ -0,0 +1,43 @@
+// Copyright 2023 The forgejo Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package activitypub
+
+import (
+	"testing"
+)
+
+func Test_ActorParser(t *testing.T) {
+	type testPair struct {
+		item    string
+		want    ActorData
+		wantErr error
+	}
+
+	tests := map[string]testPair{
+		"empty": {
+			item: "",
+			want: ActorData{},
+		},
+		"withActorID": {
+			item: "https://repo.prod.meissa.de/api/v1/activitypub/user-id/1",
+			want: ActorData{
+				schema: "https://",
+				userId: "1",
+				host:   "repo.prod.meissa.de",
+				port:   "",
+			},
+		},
+	}
+
+	for name, tt := range tests {
+		t.Run(name, func(t *testing.T) {
+			_, err := tt.want.parseActor(tests[name].item)
+
+			if (err != nil || tt.wantErr != nil) && tt.wantErr.Error() != err.Error() {
+				t.Errorf("parseActor() error = \"%v\", wantErr \"%v\"", err, tt.wantErr)
+				return
+			}
+		})
+	}
+}