Phase 12: Testing Strategy¶

#[test]
fn test_register_function()
fn test_duplicate_name_errors()
fn test_get_by_name()
fn test_get_by_trigger()
fn test_unregister()
fn test_concurrent_registration()

#[test]
fn test_load_valid_wasm()
fn test_invalid_wasm_rejected()
fn test_timeout_enforcement()
fn test_memory_limit_enforcement()
fn test_cold_start_performance()

#[test]
fn test_invoke_http_function()
fn test_invoke_with_rls_context()
fn test_disabled_function_returns_error()
fn test_timeout_kills_function()
fn test_memory_exceeded_error()
fn test_invocation_logged()

#[test]
fn test_parse_cron_expression()
fn test_calculate_next_run()
fn test_get_due_jobs()
fn test_invalid_cron_rejected()
fn test_job_invocation()
fn test_concurrent_jobs()

#[tokio::test]
async fn test_http_function_e2e() {
    // 1. Deploy function
    let func = deploy_function("hello", http_trigger, hello_wasm).await?;

    // 2. Invoke function
    let response = invoke_http("hello", json!({"name": "World"})).await?;

    // 3. Verify response
    assert_eq!(response.status, 200);
    assert_eq!(response.body["message"], "Hello, World!");

    // 4. Verify invocation logged
    let logs = query_invocations(func.id).await?;
    assert_eq!(logs.len(), 1);
    assert_eq!(logs[0].status, "success");
}

#[tokio::test]
async fn test_database_trigger_e2e() {
    // 1. Deploy database trigger function
    let func = deploy_function(
        "on_user_created",
        database_trigger("users", "INSERT"),
        create_profile_wasm
    ).await?;

    // 2. Insert user (triggers function)
    db.execute("INSERT INTO users (id, email) VALUES ($1, $2)", 
               ["uuid", "user@example.com"]).await?;

    // 3. Wait for async trigger
    sleep(Duration::from_millis(100)).await;

    // 4. Verify profile created
    let profiles = db.query("SELECT * FROM profiles WHERE user_id = $1", ["uuid"]).await?;
    assert_eq!(profiles.len(), 1);

    // 5. Verify function invoked
    let logs = query_invocations(func.id).await?;
    assert_eq!(logs[0].trigger, "database");
}

#[tokio::test]
async fn test_schedule_trigger_e2e() {
    // 1. Deploy scheduled function (every minute)
    let func = deploy_function(
        "cleanup_job",
        schedule_trigger("* * * * *"),
        cleanup_wasm
    ).await?;

    // 2. Wait for job to run
    sleep(Duration::from_secs(61)).await;

    // 3. Verify function invoked
    let logs = query_invocations(func.id).await?;
    assert!(logs.len() >= 1);
    assert_eq!(logs[0].trigger, "schedule");
}

#[test]
fn test_db_query_respects_rls() {
    let context = RlsContext { user_id: Some(user_a_id), ... };

    // User A can query their own data
    let result = db_query_host("SELECT * FROM users WHERE id = $1", [user_a_id], &context)?;
    assert_eq!(result.len(), 1);

    // User A cannot query user B's data (RLS blocks)
    let result = db_query_host("SELECT * FROM users WHERE id = $1", [user_b_id], &context)?;
    assert_eq!(result.len(), 0);
}

#[test]
fn test_db_query_service_role_bypass() {
    let context = RlsContext { can_bypass_rls: true, ... };

    // Service role can query all data
    let result = db_query_host("SELECT * FROM users", [], &context)?;
    assert_eq!(result.len(), 2);  // All users
}

#[test]
fn test_log_host_function() {
    log_host("info", "Test message");

    // Verify log written
    let logs = capture_logs();
    assert!(logs.contains("[Function] Test message"));
}

#[tokio::test]
async fn test_1000_concurrent_invocations() {
    let func = deploy_function("fast", http_trigger, fast_wasm).await?;

    let mut tasks = vec![];
    for i in 0..1000 {
        tasks.push(tokio::spawn(invoke_http("fast", json!({"id": i}))));
    }

    let results = futures::future::join_all(tasks).await;

    // All invocations succeed
    assert_eq!(results.iter().filter(|r| r.is_ok()).count(), 1000);
}

#[test]
fn test_no_memory_leak_after_1000_invocations() {
    let initial_memory = get_memory_usage();

    for _ in 0..1000 {
        invoke_and_wait("simple_function", json!({}));
    }

    let final_memory = get_memory_usage();

    // Memory usage should not grow significantly
    assert!(final_memory - initial_memory < 10 * 1024 * 1024);  // < 10MB growth
}

#[test]
fn test_timeout_enforcement() {
    let func = deploy_function("infinite_loop", http_trigger, loop_wasm)?;
    func.config.timeout = Duration::from_secs(2);

    let start = Instant::now();
    let result = invoke("infinite_loop", json!({}));
    let duration = start.elapsed();

    assert_eq!(result, Err(FunctionError::Timeout));
    assert!(duration >= Duration::from_secs(2));
    assert!(duration < Duration::from_secs(3));  // Killed promptly
}

#[test]
fn test_memory_limit_enforcement() {
    let func = deploy_function("memory_hog", http_trigger, allocate_wasm)?;
    func.config.max_memory = 64 * 1024 * 1024;  // 64MB

    let result = invoke("memory_hog", json!({"mb": 128}));  // Try 128MB

    assert_eq!(result, Err(FunctionError::OutOfMemory));
}

#[test]
fn test_cannot_bypass_rls_without_service_role() {
    let user_context = RlsContext { user_id: Some(user_id), can_bypass_rls: false, ... };

    // Try to query all users (RLS should filter)
    let result = db_query_host("SELECT * FROM private_table", [], &user_context)?;

    // Should only see own data
    assert_eq!(result.len(), 1);
    assert_eq!(result[0]["owner_id"], user_id);
}

#[test]
fn test_secrets_redacted_in_logs() {
    let func = deploy_function("with_secrets", http_trigger, wasm)?;
    func.config.environment.insert("API_KEY", "secret123");

    invoke("with_secrets", json!({}));

    let logs = query_invocation_logs(func.id)?;
    assert!(!logs.contains("secret123"));
    assert!(logs.contains("***REDACTED***"));
}

#[bench]
fn bench_cold_start(b: &mut Bencher) {
    b.iter(|| {
        let func = load_function("benchmark");
        let instance = create_instance(func);
    });
}

#[bench]
fn bench_invoke_simple_function(b: &mut Bencher) {
    let func = deploy_function("simple", http_trigger, simple_wasm)?;

    b.iter(|| {
        invoke("simple", json!({}));
    });
}