fsSync.writeFileSync(filePath, jsonlLines.join("\n"));

const entry = requireSessionEntry(await buildSessionEntry(filePath));

// The content should have 3 lines (3 message records)

const contentLines = entry.content.split("\n");

expect(contentLines).toHaveLength(3);

expect(contentLines[0]).toContain("User: Hello world");

expect(contentLines[1]).toContain("Assistant: Hi there");

expect(contentLines[2]).toContain("User: Tell me a joke");

expect(entry.content).toBe(

"User: Hello world\nAssistant: Hi there, how can I help?\nUser: Tell me a joke",

);

// lineMap should map each content line to its original JSONL line (1-indexed)

// Content line 0 → JSONL line 4 (the first user message)

// Content line 1 → JSONL line 6 (the assistant message)

// Content line 2 → JSONL line 7 (the second user message)

expect(entry.lineMap).toEqual([4, 6, 7]);

expect(entry.lineMap).toStrictEqual([4, 6, 7]);

});

it("returns empty lineMap when no messages are found", async () => {

// Usage-counted archives (reset, deleted) must surface real content so

// post-reset memory_search can recover prior session history.

expect(resetEntry.content).toContain("User: Archived hello");

expect(resetEntry.lineMap).toEqual([1]);

expect(deletedEntry.content).toContain("User: Archived hello");

expect(deletedEntry.lineMap).toEqual([1]);

expect(resetEntry.content).toBe("User: Archived hello");

expect(resetEntry.lineMap).toStrictEqual([1]);

expect(deletedEntry.content).toBe("User: Archived hello");

expect(deletedEntry.lineMap).toStrictEqual([1]);

// .bak and compaction checkpoints remain opaque pre-archive / snapshot

// artifacts and stay empty so they do not get double-indexed.

fsSync.writeFileSync(filePath, jsonlLines.join("\n"));

const entry = requireSessionEntry(await buildSessionEntry(filePath));

expect(entry.lineMap).toEqual([3, 5]);

expect(entry.lineMap).toStrictEqual([3, 5]);

});

it("strips inbound metadata when a user envelope is split across text blocks", async () => {

const entry = requireSessionEntry(await buildSessionEntry(filePath));

expect(entry.content).toBe("Assistant: User-facing summary.\nUser: Actual user follow-up.");

expect(entry.lineMap).toEqual([2, 3]);

expect(entry.lineMap).toStrictEqual([2, 3]);

});

});