first commit

packages/pubsub/test/redis-driver.test.ts

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+import { afterEach, expect, test } from "bun:test";
+import { redisDriver } from "../src/redis.ts";
+
+const bun = globalThis.Bun as typeof Bun & { connect: (options: unknown) => Promise<unknown> };
+const originalConnect = bun.connect;
+afterEach(() => {
+  bun.connect = originalConnect;
+});
+
+test("rediss URLs enable TLS and decode credentials", () => {
+  const options: Array<Record<string, unknown>> = [];
+  bun.connect = ((value: Record<string, unknown>) => {
+    options.push(value);
+    return new Promise(() => {});
+  }) as typeof bun.connect;
+  const driver = redisDriver("rediss://user:p%40ss@redis.example.com:6380/2");
+  expect(options).toHaveLength(2);
+  expect(options[0]).toMatchObject({ hostname: "redis.example.com", port: 6380, tls: true });
+  driver.close();
+});
+
+test("rejects invalid Redis URLs before connecting", () => {
+  expect(() => redisDriver("http://localhost:6379")).toThrow("redis:// or rediss://");
+  expect(() => redisDriver("redis://localhost/not-a-db")).toThrow("database");
+});
+
+test("bounds writes queued while Redis is unavailable", () => {
+  bun.connect = (() => new Promise(() => {})) as typeof bun.connect;
+  const driver = redisDriver("redis://localhost:6379");
+  for (let index = 0; index < 1000; index++) driver.publish("topic", index);
+  expect(() => driver.publish("topic", "overflow")).toThrow("queue is full");
+  driver.close();
+});