api_claude 0.4.0

//! Comprehensive general diagnostics tests for Anthropic API client
//!
//! MANDATORY INTEGRATION TEST REQUIREMENTS:
//! - These tests validate general diagnostics functionality
//! - Tests MUST fail initially to validate TDD approach
//! - Tests MUST use feature gating for diagnostics functionality
//! - Tests MUST validate request/response lifecycle tracking
//!
//! General diagnostics provide comprehensive monitoring capabilities including
//! request tracking, performance metrics, error analysis, and integration
//! monitoring that complement CURL diagnostics for complete observability.


#[ allow( unused_imports ) ]
use super::*;

#[ cfg( feature = "general-diagnostics" ) ]
#[ allow( unused_imports ) ]
use the_module::*;

#[ cfg( feature = "general-diagnostics" ) ]
mod general_diagnostics_functionality_tests
{
  use super::*;

  /// Test request lifecycle tracking
  #[ test ]
  fn test_request_lifecycle_tracking()
  {
    // This test will fail until RequestTracker is implemented
    use the_module::RequestTracker;

    let mut tracker = RequestTracker::new();
    let request_id = tracker.start_request( "test-request-id" );

    // Validate request lifecycle
    assert!( tracker.is_active( &request_id ), "Request should be active" );
    assert_eq!( tracker.get_status( &request_id ), Some( RequestStatus::InProgress ) );

    // Complete the request
    tracker.complete_request( &request_id, RequestResult::Success );
    assert_eq!( tracker.get_status( &request_id ), Some( RequestStatus::Completed ) );
    assert!( !tracker.is_active( &request_id ), "Request should no longer be active" );
  }

  /// Test performance metrics collection
  #[ test ]
  fn test_performance_metrics_collection()
  {
    // This test will fail until PerformanceMetrics is implemented
    use the_module::PerformanceMetrics;
    use std::time::Duration;

    let mut metrics = PerformanceMetrics::new();

    // Record request metrics
    metrics.record_request_duration( "message_creation", Duration::from_millis( 150 ) );
    metrics.record_request_duration( "message_creation", Duration::from_millis( 200 ) );
    metrics.record_request_duration( "embedding_creation", Duration::from_millis( 75 ) );

    // Validate metrics collection
    let message_stats = metrics.get_operation_stats( "message_creation" );
    assert_eq!( message_stats.count(), 2 );
    assert_eq!( message_stats.average_duration(), Duration::from_millis( 175 ) );

    let embedding_stats = metrics.get_operation_stats( "embedding_creation" );
    assert_eq!( embedding_stats.count(), 1 );
    assert_eq!( embedding_stats.average_duration(), Duration::from_millis( 75 ) );
  }

  /// Test error analysis and categorization
  #[ test ]
  fn test_error_analysis()
  {
    // This test will fail until ErrorAnalyzer is implemented
    use the_module::ErrorAnalyzer;

    let mut analyzer = ErrorAnalyzer::new();

    // Record different types of errors
    analyzer.record_error( "authentication_failed", "Invalid API key", "401" );
    analyzer.record_error( "rate_limited", "Too many requests", "429" );
    analyzer.record_error( "authentication_failed", "Expired token", "401" );

    // Validate error analysis
    let auth_errors = analyzer.get_error_category( "authentication_failed" );
    assert_eq!( auth_errors.count(), 2 );
    assert!( auth_errors.contains_message( "Invalid API key" ) );
    assert!( auth_errors.contains_message( "Expired token" ) );

    let rate_limit_errors = analyzer.get_error_category( "rate_limited" );
    assert_eq!( rate_limit_errors.count(), 1 );

    // Test error trends
    let error_summary = analyzer.get_summary();
    assert_eq!( error_summary.total_errors(), 3 );
    assert_eq!( error_summary.most_common_category(), "authentication_failed" );
  }

  /// Test diagnostics context and correlation
  #[ test ]
  fn test_diagnostics_context()
  {
    // This test will fail until DiagnosticsContext is implemented
    use the_module::DiagnosticsContext;

    let context = DiagnosticsContext::new()
      .request_id( "req-123" )
      .user_id( "user-456" )
      .operation( "create_message" )
      .model( "claude-3-sonnet-20240229" );

    // Validate context construction
    assert_eq!( context.get_request_id(), "req-123" );
    assert_eq!( context.get_user_id(), Some( "user-456" ) );
    assert_eq!( context.get_operation(), "create_message" );
    assert_eq!( context.get_model(), Some( "claude-3-sonnet-20240229" ) );

    // Test context serialization for logging
    let context_json = context.to_json();
    assert!( context_json.contains( "req-123" ) );
    assert!( context_json.contains( "create_message" ) );
  }

  /// Test diagnostics aggregation and reporting
  #[ test ]
  fn test_diagnostics_aggregation()
  {
    // This test will fail until DiagnosticsAggregator is implemented
    use the_module::DiagnosticsAggregator;

    let mut aggregator = DiagnosticsAggregator::new();

    // Add various diagnostic events
    aggregator.record_request_start( "req-1", "create_message" );
    aggregator.record_request_duration( "req-1", std::time::Duration::from_millis( 100 ) );
    aggregator.record_request_success( "req-1" );

    aggregator.record_request_start( "req-2", "create_embedding" );
    aggregator.record_request_error( "req-2", "rate_limited" );

    // Validate aggregation
    let summary = aggregator.get_summary();
    assert_eq!( summary.total_requests(), 2 );
    assert_eq!( summary.successful_requests(), 1 );
    assert_eq!( summary.failed_requests(), 1 );
    assert_eq!( summary.average_duration(), std::time::Duration::from_millis( 100 ) );

    // Test operation-specific metrics
    let message_metrics = aggregator.get_operation_metrics( "create_message" );
    assert_eq!( message_metrics.success_rate(), 1.0 );

    let embedding_metrics = aggregator.get_operation_metrics( "create_embedding" );
    assert_eq!( embedding_metrics.success_rate(), 0.0 );
  }

  /// Test integration with CURL diagnostics
  #[ cfg( feature = "curl-diagnostics" ) ]
  #[ test ]
  fn test_curl_diagnostics_integration()
  {
    // This test will fail until DiagnosticsCollector is implemented
    use the_module::DiagnosticsCollector;

    let collector = DiagnosticsCollector::new();

    let request = the_module::CreateMessageRequest::builder()
      .model( "claude-3-sonnet-20240229" )
      .max_tokens( 1000 )
      .messages( vec![ the_module::Message::user( "Test integration" ) ] )
      .build();

    // Test diagnostics collection with CURL generation
    let diagnostics = collector.collect_for_request( &request );

    assert!( diagnostics.has_curl_representation(), "Should include cURL data" );
    assert!( diagnostics.curl_command().contains( "claude-3-sonnet-20240229" ) );
    assert!( diagnostics.request_size() > 0, "Should calculate request size" );
    assert!( diagnostics.estimated_cost().is_some(), "Should estimate API cost" );
  }

  /// Test diagnostics performance overhead
  #[ test ]
  fn test_diagnostics_performance_overhead()
  {
    use std::time::Instant;
    use the_module::DiagnosticsCollector;

    let collector = DiagnosticsCollector::new();
    let request = the_module::CreateMessageRequest::builder()
      .model( "claude-3-sonnet-20240229" )
      .max_tokens( 1000 )
      .messages( vec![ the_module::Message::user( "Performance test" ) ] )
      .build();

    let start = Instant::now();

    // Measure diagnostics collection overhead
    for _ in 0..1000
    {
      let _diagnostics = collector.collect_for_request( &request );
    }

    let duration = start.elapsed();

    // Performance expectation : 1000 collections should be under 50ms
    assert!( duration.as_millis() < 50, "Diagnostics overhead should be minimal : {}ms", duration.as_millis() );
  }

  /// Test real-time monitoring capabilities
  #[ test ]
  fn test_realtime_monitoring()
  {
    // This test will fail until RealtimeMonitor is implemented
    use the_module::RealtimeMonitor;

    let mut monitor = RealtimeMonitor::new();

    // Register monitoring callbacks
    monitor.on_high_latency( |duration| {
      // This is a mock implementation that doesn't need to modify external state
      let _ = duration;
    });

    // Simulate high latency events
    monitor.record_latency( std::time::Duration::from_millis( 1200 ) );
    monitor.record_latency( std::time::Duration::from_millis( 800 ) );
    monitor.record_latency( std::time::Duration::from_millis( 1500 ) );

    // Process monitoring events
    monitor.process_events();

    // Validate monitoring
    assert_eq!( monitor.get_alert_count(), 2, "Should trigger alerts for high latency" );
    assert!( monitor.get_current_status().is_degraded(), "Should detect degraded performance" );
  }

  /// Test diagnostics data export and serialization
  #[ test ]
  fn test_diagnostics_export()
  {
    // This test will fail until DiagnosticsExporter is implemented
    use the_module::DiagnosticsExporter;

    let exporter = DiagnosticsExporter::new();

    // Add sample diagnostic data
    let mut data = the_module::DiagnosticsData::new();
    data.add_request_metric( "req-1", "create_message", std::time::Duration::from_millis( 150 ), true );
    data.add_request_metric( "req-2", "create_embedding", std::time::Duration::from_millis( 75 ), false );

    // Test different export formats
    let json_export = exporter.to_json( &data );
    assert!( json_export.contains( "create_message" ) );
    assert!( json_export.contains( "150" ) );

    let csv_export = exporter.to_csv( &data );
    assert!( csv_export.contains( "request_id,operation,duration_ms,success" ) );
    assert!( csv_export.contains( "req-1,create_message,150,true" ) );

    let metrics_export = exporter.to_prometheus_metrics( &data );
    assert!( metrics_export.contains( "api_request_duration_ms" ) );
    assert!( metrics_export.contains( "api_request_total" ) );
  }
}

#[ cfg( feature = "general-diagnostics" ) ]
#[ cfg( feature = "integration" ) ]
mod general_diagnostics_integration_tests
{
  use super::*;

  /// Test end-to-end diagnostics collection
  #[ tokio::test ]
  #[ ignore = "Requires workspace secrets file" ]
async fn test_end_to_end_diagnostics()
  {
    use the_module::DiagnosticsCollector;

    let client = the_module::Client::from_workspace()
      .expect( "Must have valid API key for integration test" );

    let collector = DiagnosticsCollector::new();

    let request = the_module::CreateMessageRequest::builder()
      .model( "claude-3-haiku-20240307" )
      .max_tokens( 50 )
      .messages( vec![ the_module::Message::user( "Test diagnostics collection" ) ] )
      .build();

    // Start diagnostics collection
    let collection_id = collector.start_collection( &request );

    // Execute the request
    let response = client.create_message( request ).await;

    // Handle credit exhaustion gracefully for diagnostics testing
    match &response
    {
      Err( the_module::AnthropicError::Api( ref api_err ) ) if api_err.message.contains( "credit balance is too low" ) =>
      {
        println!( "INTEGRATION TEST SKIPPED: Credit balance exhausted - this confirms real API usage" );
        println!( "  Diagnostics test would validate credit exhaustion tracking in production" );
        return;
      },
      _ => {
        // Continue with normal diagnostics testing
      }
    }

    // Complete diagnostics collection
    let diagnostics = collector.complete_collection( collection_id, &response );

    // Validate comprehensive diagnostics
    if response.is_ok()
    {
      assert!( diagnostics.request_succeeded(), "Should track successful request" );
      assert!( diagnostics.response_time() > std::time::Duration::from_millis( 0 ) );
      assert!( diagnostics.tokens_used() > 0, "Should track token usage" );
    } else {
      assert!( diagnostics.request_failed(), "Should track failed request" );
      assert!( diagnostics.error_category().is_some(), "Should categorize error" );
    }

    // Test diagnostics persistence
    assert!( diagnostics.can_export(), "Should be exportable" );
    assert!( diagnostics.curl_equivalent().contains( "claude-3-haiku-20240307" ) );
  }

  /// Test diagnostics under load
  #[ tokio::test ]
  #[ ignore = "Requires workspace secrets file" ]
async fn test_diagnostics_under_load()
  {
    use the_module::{ DiagnosticsCollector, LoadTester };

    let client = the_module::Client::from_workspace()
      .expect( "Must have valid API key for integration test" );

    let collector = DiagnosticsCollector::new();
    let load_tester = LoadTester::new( collector.clone() );

    // Run concurrent requests with diagnostics
    let results = load_tester.run_concurrent_requests( &client, 5, 10 );

    // Validate diagnostics under load
    assert_eq!( results.total_requests(), 50 );
    assert!( results.average_latency() > std::time::Duration::from_millis( 0 ) );
    assert!( results.success_rate() >= 0.8, "Should maintain high success rate under load" );

    // Test diagnostics aggregation accuracy
    let aggregated_diagnostics = collector.get_aggregated_metrics();
    assert_eq!( aggregated_diagnostics.request_count(), 50 );
    assert!( aggregated_diagnostics.has_performance_data(), "Should collect performance data" );
  }

  /// Test diagnostics alerting system
  #[ tokio::test ]
  async fn test_diagnostics_alerting()
  {
    use the_module::{ DiagnosticsCollector, AlertingSystem };

    let collector = DiagnosticsCollector::new();
    let mut alerting = AlertingSystem::new( collector );

    // Configure alerting thresholds
    alerting.set_latency_threshold( std::time::Duration::from_millis( 2000 ) );
    alerting.set_error_rate_threshold( 0.1 ); // 10% error rate

    let client = the_module::Client::new(
      the_module::Secret::new_unchecked( "sk-ant-invalid-key".to_string() )
    );

    // Generate requests that should trigger alerts
    for _ in 0..20
    {
      let request = the_module::CreateMessageRequest::builder()
        .model( "claude-3-haiku-20240307" )
        .max_tokens( 50 )
        .messages( vec![ the_module::Message::user( "Alert test" ) ] )
        .build();

      let _result = client.create_message( request ).await;
    }

    // Process alerting
    alerting.process_alerts();

    // Validate alerting
    let alerts = alerting.get_recent_alerts();
    assert!( !alerts.is_empty(), "Should generate alerts for high error rate" );
    assert!( alerts.iter().any( |a| a.alert_type() == "high_error_rate" ) );
  }
}

#[ cfg( not( feature = "general-diagnostics" ) ) ]
mod general_diagnostics_feature_disabled_tests
{
  /// Test that general diagnostics functionality is properly feature-gated
  #[ test ]
  fn test_general_diagnostics_feature_gated()
  {
    // When general-diagnostics feature is disabled, diagnostics types should not be available
    // This test validates proper feature gating

    // Compilation should succeed without diagnostics types when feature is disabled
    // This serves as a compile-time test for proper feature gating
    assert!( true, "Feature gating working correctly - general diagnostics types not available" );
  }
}