juspay/hyperswitch · error

failed to connect to authenticated redis

Error message

failed to connect to authenticated redis

What it means

This is a test-only expect() panic in crates/redis_interface test.rs:2332. The helper builds authenticated Redis settings, validates them, then calls test_connection() to obtain a live pool; if the connection cannot be established, expect() panics with 'failed to connect to authenticated redis', failing the test setup rather than returning a Result. It indicates the test's authenticated Redis fixture (RedisConnectionSettings) could not open a usable connection.

Solutions

1. Start the Redis dependency the tests expect (e.g. docker compose up redis) and confirm it listens on the configured host:port with redis-cli ping.
2. Verify the credentials: ensure the test settings load the correct username/password (check env vars or .env in CI) and that Redis requirepass/acl matches.
3. Match connection mode to the server: standalone vs cluster vs TLS (insecure switch) in RedisConnectionSettings before validation.
4. Check network reachability from the test process (port mapping, container hostname, firewall) and that settings.validate() passed for the same values used to connect.
5. If the failure is environmental, skip the test explicitly instead of panicking in setup.

Example fix

// before
Some(
    test_connection(&settings)
        .await
        .expect("failed to connect to authenticated redis"),
)
// after
match test_connection(&settings).await {
    Ok(pool) => Some(pool),
    Err(err) if is_ci() && !auth_redis_available() => {
        eprintln!("skipping: authenticated redis unavailable: {err:?}");
        None
    }
    Err(err) => panic!("failed to connect to authenticated redis: {err:?}"),
}

if let Err(e) = settings.validate() { panic!("authenticated redis settings invalid: {e:?}"); }
// pre-flight before test_connection:
// redis-cli -u redis://user:pass@host:port ping  (must return PONG)

match test_connection(&settings).await {
    Ok(pool) => Some(pool),
    Err(e) => panic!("failed to connect to authenticated redis: {e:?}"),
}

When it happens

Trigger: Calling test_connection(&settings).await inside the authenticated-pool test helper when the underlying Redis client cannot connect: Redis not running, wrong host/port, wrong or missing username/password, TLS/db-index mismatch, or a cluster-mode instance addressed as standalone.

Common situations: Running integration tests locally without docker-compose/Redis up; CI missing the REDIS_PASSWORD-style env var the test settings read; Docker port mapping changed; connecting to a Redis that requires auth but settings left password None; Redis bound to a container network hostname unreachable from the test host.

Understand the failure class

Background: ECONNREFUSED and "connection refused" / "could not connect to server" errors: what they mean and how to fix them — this error's family across 44 libraries.

• Authentication and authorization failures — expired tokens, bad credentials, and missing scopes.

Related errors

• failed to publish on authenticated connection
• failed to subscribe on authenticated connection
• Spawn block failure
• authenticated redis settings failed validation
• todo!()

AI-assisted analysis of juspay/hyperswitch@afd9284352 (2026-09-18). Data as JSON: /api/errors/3a31fcdbd7e8e3c3. Report an issue: GitHub.

Appendix: source

Thrown at crates/redis_interface/src/test.rs:2332

    Some(RedisSettings {
        host,
        port,
        username,
        password: Some(password.into()),
        ..RedisSettings::default()
    })
}

async fn get_auth_pool_or_skip() -> Option<RedisConnectionWithContext> {
    let settings = auth_settings_from_env()?;
    settings
        .validate()
        .expect("authenticated redis settings failed validation");
    Some(
        test_connection(&settings)
            .await
            .expect("failed to connect to authenticated redis"),
    )
}

#[tokio::test]
async fn test_authenticated_connection_set_get() {
    let is_success = tokio::task::spawn_blocking(move || {
        futures::executor::block_on(async {
            let Some(pool) = get_auth_pool_or_skip().await else {
                tracing::warn!("SKIP: auth test skipped — set TEST_REDIS_AUTH_PASSWORD to enable");
                return true;
            };

            let key: RedisKey = format!("test_auth_set_get_{}", unique_test_id()).into();
            let value = "authenticated_value".to_string();

            let set_result = pool.set_key_with_expiry(&key, value.clone(), 60).await;
            let get_result: Result<String, _> = pool.get_key(&key).await;
            let del_result = pool.delete_key(&key).await;

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