1 files changed, 103 insertions, 2 deletions

diff --git a/packages/cli/src/render.test.ts b/packages/cli/src/render.test.ts
index c638584..849d33a 100644
--- a/packages/cli/src/render.test.ts
+++ b/packages/cli/src/render.test.ts
@@ -1,7 +1,12 @@
-import type { AgentEvent } from "@dispatch/transport-contract";
+import type { AgentEvent, ConversationMeta } from "@dispatch/transport-contract";
 import type { StepId } from "@dispatch/wire";
 import { describe, expect, it } from "vitest";
-import { renderEvent } from "./render.js";
+import {
+	extractLastText,
+	formatConversationList,
+	formatRelativeTime,
+	renderEvent,
+} from "./render.js";
 
 describe("renderEvent", () => {
 	const opts = { showReasoning: false };
@@ -149,3 +154,99 @@ describe("renderEvent", () => {
 		expect(renderEvent(e, opts)).toBeUndefined();
 	});
 });
+
+describe("extractLastText", () => {
+	it("accumulates text deltas", () => {
+		const events: AgentEvent[] = [
+			{ type: "text-delta", conversationId: "c", turnId: "t", delta: "Hello" },
+			{ type: "text-delta", conversationId: "c", turnId: "t", delta: ", " },
+			{ type: "text-delta", conversationId: "c", turnId: "t", delta: "world" },
+			{ type: "done", conversationId: "c", turnId: "t", reason: "completed" },
+		];
+		expect(extractLastText(events)).toBe("Hello, world");
+	});
+
+	it("returns empty string when no text-delta events", () => {
+		const events: AgentEvent[] = [
+			{ type: "turn-start", conversationId: "c", turnId: "t" },
+			{ type: "done", conversationId: "c", turnId: "t", reason: "completed" },
+		];
+		expect(extractLastText(events)).toBe("");
+	});
+
+	it("ignores non-text-delta events but keeps deltas interleaved among them", () => {
+		const events: AgentEvent[] = [
+			{ type: "text-delta", conversationId: "c", turnId: "t", delta: "a" },
+			{
+				type: "tool-call",
+				conversationId: "c",
+				turnId: "t",
+				stepId: "t1#0" as StepId,
+				toolCallId: "tc1",
+				toolName: "read_file",
+				input: {},
+			},
+			{ type: "text-delta", conversationId: "c", turnId: "t", delta: "b" },
+		];
+		expect(extractLastText(events)).toBe("ab");
+	});
+
+	it("returns empty string for an empty event list", () => {
+		expect(extractLastText([])).toBe("");
+	});
+});
+
+describe("formatRelativeTime", () => {
+	const now = 1_000_000_000_000; // fixed clock
+
+	it("returns 'just now' for under a minute", () => {
+		expect(formatRelativeTime(now - 30_000, now)).toBe("just now");
+	});
+
+	it("returns minutes ago", () => {
+		expect(formatRelativeTime(now - 5 * 60_000, now)).toBe("5m ago");
+	});
+
+	it("returns hours ago", () => {
+		expect(formatRelativeTime(now - 3 * 3_600_000, now)).toBe("3h ago");
+	});
+
+	it("returns days ago", () => {
+		expect(formatRelativeTime(now - 2 * 86_400_000, now)).toBe("2d ago");
+	});
+
+	it("returns a date past a week", () => {
+		// 2001-09-09T01:46:40.000Z
+		expect(formatRelativeTime(now - 8 * 86_400_000, now)).toBe("2001-09-01");
+	});
+});
+
+describe("formatConversationList", () => {
+	const now = 1_000_000_000_000;
+
+	const conv = (id: string, title: string, ageMs: number): ConversationMeta => ({
+		id,
+		title,
+		createdAt: now - ageMs - 1000,
+		lastActivityAt: now - ageMs,
+	});
+
+	it("returns empty string for an empty list", () => {
+		expect(formatConversationList([], now)).toBe("");
+	});
+
+	it("formats one row with short id, title, relative time", () => {
+		const list = [conv("abcdef1234567890", "hello world", 5 * 60_000)];
+		expect(formatConversationList(list, now)).toBe("abcdef12 | hello world | 5m ago");
+	});
+
+	it("formats multiple rows one per line", () => {
+		const list = [
+			conv("abcdef1234567890", "first", 5 * 60_000),
+			conv("0123456789abcdef", "second", 3 * 3_600_000),
+		];
+		expect(formatConversationList(list, now)).toBe(
+			"abcdef12 | first | 5m ago\n01234567 | second | 3h ago",
+		);
+	});
+});