fix(discord): log gateway reconnects

src/discord/gateway-logging.test.ts

@@ -0,0 +1,88 @@
+import { EventEmitter } from "node:events";
+
+import { afterEach, describe, expect, it, vi } from "vitest";
+
+vi.mock("../globals.js", () => ({
+  logVerbose: vi.fn(),
+}));
+
+import { logVerbose } from "../globals.js";
+import { attachDiscordGatewayLogging } from "./gateway-logging.js";
+
+const makeRuntime = () => ({
+  log: vi.fn(),
+});
+
+describe("attachDiscordGatewayLogging", () => {
+  afterEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("logs debug events and promotes reconnect/close to info", () => {
+    const emitter = new EventEmitter();
+    const runtime = makeRuntime();
+
+    const cleanup = attachDiscordGatewayLogging({
+      emitter,
+      runtime,
+    });
+
+    emitter.emit("debug", "WebSocket connection opened");
+    emitter.emit("debug", "WebSocket connection closed with code 1001");
+    emitter.emit("debug", "Reconnecting with backoff: 1000ms after code 1001");
+
+    const logVerboseMock = vi.mocked(logVerbose);
+    expect(logVerboseMock).toHaveBeenCalledTimes(3);
+    expect(runtime.log).toHaveBeenCalledTimes(2);
+    expect(runtime.log).toHaveBeenNthCalledWith(
+      1,
+      "discord gateway: WebSocket connection closed with code 1001",
+    );
+    expect(runtime.log).toHaveBeenNthCalledWith(
+      2,
+      "discord gateway: Reconnecting with backoff: 1000ms after code 1001",
+    );
+
+    cleanup();
+  });
+
+  it("logs warnings and metrics only to verbose", () => {
+    const emitter = new EventEmitter();
+    const runtime = makeRuntime();
+
+    const cleanup = attachDiscordGatewayLogging({
+      emitter,
+      runtime,
+    });
+
+    emitter.emit("warning", "High latency detected: 1200ms");
+    emitter.emit("metrics", { latency: 42, errors: 1 });
+
+    const logVerboseMock = vi.mocked(logVerbose);
+    expect(logVerboseMock).toHaveBeenCalledTimes(2);
+    expect(runtime.log).not.toHaveBeenCalled();
+
+    cleanup();
+  });
+
+  it("removes listeners on cleanup", () => {
+    const emitter = new EventEmitter();
+    const runtime = makeRuntime();
+
+    const cleanup = attachDiscordGatewayLogging({
+      emitter,
+      runtime,
+    });
+    cleanup();
+
+    const logVerboseMock = vi.mocked(logVerbose);
+    logVerboseMock.mockClear();
+
+    emitter.emit("debug", "WebSocket connection closed with code 1001");
+    emitter.emit("warning", "High latency detected: 1200ms");
+    emitter.emit("metrics", { latency: 42 });
+
+    expect(logVerboseMock).not.toHaveBeenCalled();
+    expect(runtime.log).not.toHaveBeenCalled();
+  });
+});