});

expect(lines.length).toBe(1);

const fingerprint = crypto

.createHash("sha256")

.update('{"child":{"ref":"[Circular]"},"content":"hello","role":"user"}')

.digest("hex");

const event = JSON.parse(lines[0]?.trim() ?? "{}") as Record<string, unknown>;

expect(event.messageCount).toBe(1);

expect(event.messageFingerprints).toHaveLength(1);

expect(event).toStrictEqual(

expect.objectContaining({

messageCount: 1,

messageFingerprints: [fingerprint],

messageRoles: ["user"],

messagesDigest: crypto

.createHash("sha256")

.update(JSON.stringify(fingerprint))

.digest("hex"),

}),

);

});

});