Auto-reply: smarter chunking breaks

src/auto-reply/reply.chunking.test.ts

@@ -0,0 +1,49 @@
+import { describe, expect, it, vi } from "vitest";
+
+import type { WarelayConfig } from "../config/config.js";
+import { autoReplyIfConfigured } from "./reply.js";
+
+describe("autoReplyIfConfigured chunking", () => {
+  it("sends a single Twilio message for multi-line text under limit", async () => {
+    const body = [
+      "Oh! Hi Peter! 🦞",
+      "",
+      "Sorry, I got a bit trigger-happy with the heartbeat response there. What's up?",
+      "",
+      "Everything working on your end?",
+    ].join("\n");
+
+    const config: WarelayConfig = {
+      inbound: {
+        reply: {
+          mode: "text",
+          text: body,
+        },
+      },
+    };
+
+    const create = vi.fn().mockResolvedValue({});
+    const client = { messages: { create } } as unknown as Parameters<
+      typeof autoReplyIfConfigured
+    >[0];
+
+    const message = {
+      body: "ping",
+      from: "+15551234567",
+      to: "+15557654321",
+      sid: "SM123",
+    } as Parameters<typeof autoReplyIfConfigured>[1];
+
+    await autoReplyIfConfigured(client, message, config);
+
+    expect(create).toHaveBeenCalledTimes(1);
+    expect(create).toHaveBeenCalledWith(
+      expect.objectContaining({
+        body,
+        from: message.to,
+        to: message.from,
+      }),
+    );
+  });
+});
+