#![allow(
    clippy::assertions_on_constants,
    clippy::assertions_on_result_states,
    clippy::clone_on_copy,
    clippy::decimal_literal_representation,
    clippy::doc_markdown,
    clippy::empty_line_after_doc_comments,
    clippy::field_reassign_with_default,
    clippy::get_unwrap,
    clippy::identity_op,
    clippy::inconsistent_digit_grouping,
    clippy::indexing_slicing,
    clippy::integer_division,
    clippy::len_zero,
    clippy::let_underscore_must_use,
    clippy::manual_div_ceil,
    clippy::manual_let_else,
    clippy::manual_range_contains,
    clippy::modulo_arithmetic,
    clippy::needless_range_loop,
    clippy::non_ascii_literal,
    clippy::redundant_clone,
    clippy::shadow_reuse,
    clippy::shadow_same,
    clippy::shadow_unrelated,
    clippy::single_match_else,
    clippy::str_to_string,
    clippy::string_slice,
    clippy::tests_outside_test_module,
    clippy::too_many_lines,
    clippy::unnecessary_wraps,
    clippy::unseparated_literal_suffix,
    clippy::use_debug,
    clippy::useless_vec,
    clippy::wildcard_enum_match_arm,
    clippy::else_if_without_else,
    clippy::expect_used,
    clippy::missing_const_for_fn,
    clippy::similar_names,
    clippy::type_complexity,
    clippy::collapsible_else_if,
    clippy::doc_lazy_continuation,
    clippy::items_after_test_module,
    clippy::map_clone,
    clippy::multiple_unsafe_ops_per_block,
    clippy::unwrap_or_default,
    clippy::assign_op_pattern,
    clippy::needless_borrow,
    clippy::println_empty_string,
    clippy::unnecessary_cast,
    clippy::used_underscore_binding,
    clippy::create_dir,
    clippy::implicit_saturating_sub,
    clippy::exit,
    clippy::expect_fun_call,
    clippy::too_many_arguments,
    clippy::unnecessary_map_or,
    clippy::unwrap_used,
    dead_code,
    unused_imports,
    unused_variables,
    clippy::cloned_ref_to_slice_refs,
    clippy::neg_multiply,
    clippy::while_let_loop,
    clippy::bool_assert_comparison,
    clippy::excessive_precision,
    clippy::trivially_copy_pass_by_ref,
    clippy::op_ref,
    clippy::redundant_closure,
    clippy::unnecessary_lazy_evaluations,
    clippy::if_then_some_else_none,
    clippy::unnecessary_to_owned,
    clippy::single_component_path_imports,
)]
//! Unit tests for DQN Rainbow Configuration
//!
//! Tests configuration defaults, serialization, and validation for Rainbow DQN.

use ml::dqn::rainbow_config::RainbowAgentConfig;

#[test]
fn test_rainbow_config_default() {
    let config = RainbowAgentConfig::default();

    // Verify device defaults
    assert_eq!(config.device, "cpu");

    // Verify replay buffer settings
    assert_eq!(config.min_replay_size, 10000);
    assert_eq!(config.replay_buffer_size, 100000);
    assert_eq!(config.batch_size, 32);

    // Verify learning parameters
    assert_eq!(config.learning_rate, 0.0001);
    assert!(config.gamma > 0.0 && config.gamma <= 1.0);

    // Verify update frequencies
    assert!(config.target_update_freq > 0);
    assert!(config.train_freq > 0);
    assert!(config.noise_reset_freq > 0);

    // Verify priority replay parameters
    assert!(config.priority_alpha >= 0.0);
    assert!(config.priority_beta >= 0.0 && config.priority_beta <= 1.0);
    assert!(config.priority_beta_increment >= 0.0);
}

#[test]
fn test_rainbow_config_serialization() {
    let config = RainbowAgentConfig::default();

    // Test JSON serialization
    let json = serde_json::to_string(&config).expect("Should serialize to JSON");
    assert!(json.contains("device"));
    assert!(json.contains("batch_size"));
    assert!(json.contains("learning_rate"));

    // Test deserialization
    let deserialized: RainbowAgentConfig =
        serde_json::from_str(&json).expect("Should deserialize from JSON");

    assert_eq!(deserialized.device, config.device);
    assert_eq!(deserialized.batch_size, config.batch_size);
    assert_eq!(deserialized.learning_rate, config.learning_rate);
}

#[test]
fn test_rainbow_config_custom_values() {
    let mut config = RainbowAgentConfig::default();

    // Modify configuration
    config.device = "cuda".to_string();
    config.batch_size = 64;
    config.learning_rate = 0.001;
    config.gamma = 0.95;

    // Verify changes
    assert_eq!(config.device, "cuda");
    assert_eq!(config.batch_size, 64);
    assert_eq!(config.learning_rate, 0.001);
    assert_eq!(config.gamma, 0.95);
}

#[test]
fn test_rainbow_config_priority_replay_params() {
    let config = RainbowAgentConfig::default();

    // Verify priority replay parameters are valid
    assert!(
        config.priority_alpha >= 0.0 && config.priority_alpha <= 1.0,
        "priority_alpha should be in [0, 1]"
    );

    assert!(
        config.priority_beta >= 0.0 && config.priority_beta <= 1.0,
        "priority_beta should be in [0, 1]"
    );

    assert!(
        config.priority_beta_increment >= 0.0 && config.priority_beta_increment <= 0.01,
        "priority_beta_increment should be small positive value"
    );
}

#[test]
fn test_rainbow_config_network_settings() {
    let config = RainbowAgentConfig::default();

    // Verify network config exists
    let _network = &config.network_config;
}

#[test]
fn test_rainbow_config_cloneable() {
    let config = RainbowAgentConfig::default();
    let cloned = config.clone();

    assert_eq!(cloned.device, config.device);
    assert_eq!(cloned.batch_size, config.batch_size);
    assert_eq!(cloned.learning_rate, config.learning_rate);
}

#[test]
fn test_rainbow_config_debuggable() {
    let config = RainbowAgentConfig::default();
    let debug_str = format!("{:?}", config);

    assert!(debug_str.contains("RainbowAgentConfig"));
    assert!(debug_str.contains("device"));
}