test: move gateway rpc/local suites out of e2e

src/gateway/agent-prompt.test.ts

@@ -0,0 +1,48 @@
+import { describe, expect, it } from "vitest";
+import { buildHistoryContextFromEntries } from "../auto-reply/reply/history.js";
+import { buildAgentMessageFromConversationEntries } from "./agent-prompt.js";
+
+describe("gateway agent prompt", () => {
+  it("returns empty for no entries", () => {
+    expect(buildAgentMessageFromConversationEntries([])).toBe("");
+  });
+
+  it("returns current body when there is no history", () => {
+    expect(
+      buildAgentMessageFromConversationEntries([
+        { role: "user", entry: { sender: "User", body: "hi" } },
+      ]),
+    ).toBe("hi");
+  });
+
+  it("uses history context when there is history", () => {
+    const entries = [
+      { role: "assistant", entry: { sender: "Assistant", body: "prev" } },
+      { role: "user", entry: { sender: "User", body: "next" } },
+    ] as const;
+
+    const expected = buildHistoryContextFromEntries({
+      entries: entries.map((e) => e.entry),
+      currentMessage: "User: next",
+      formatEntry: (e) => `${e.sender}: ${e.body}`,
+    });
+
+    expect(buildAgentMessageFromConversationEntries([...entries])).toBe(expected);
+  });
+
+  it("prefers last tool entry over assistant for current message", () => {
+    const entries = [
+      { role: "user", entry: { sender: "User", body: "question" } },
+      { role: "tool", entry: { sender: "Tool:x", body: "tool output" } },
+      { role: "assistant", entry: { sender: "Assistant", body: "assistant text" } },
+    ] as const;
+
+    const expected = buildHistoryContextFromEntries({
+      entries: [entries[0].entry, entries[1].entry],
+      currentMessage: "Tool:x: tool output",
+      formatEntry: (e) => `${e.sender}: ${e.body}`,
+    });
+
+    expect(buildAgentMessageFromConversationEntries([...entries])).toBe(expected);
+  });
+});