optirs_bench/ci_cd_automation/

test_execution.rs

// Test Execution and Management
//
// This module provides comprehensive test execution capabilities for CI/CD automation,
// including test suite management, performance test cases, test execution contexts,
// and result handling.

use crate::error::{OptimError, Result};
use crate::performance_regression_detector::{
    EnvironmentInfo, MetricType, MetricValue, PerformanceMeasurement, TestConfiguration,
};
use serde::{Deserialize, Serialize};
use std::collections::HashMap;
use std::path::PathBuf;
use std::process::{Command, Stdio};
use std::time::{Duration, Instant, SystemTime};

use super::config::{CiCdPlatform, TestExecutionConfig, TestIsolationLevel};

/// Performance test suite for CI/CD automation
#[derive(Debug, Clone)]
pub struct PerformanceTestSuite {
    /// Test cases in the suite
    pub test_cases: Vec<PerformanceTestCase>,
    /// Test suite configuration
    pub config: TestSuiteConfig,
    /// Execution context
    pub context: Option<CiCdContext>,
    /// Test results
    pub results: Vec<CiCdTestResult>,
}

/// Individual performance test case
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PerformanceTestCase {
    /// Test case name
    pub name: String,
    /// Test category
    pub category: TestCategory,
    /// Test executor type
    pub executor: TestExecutor,
    /// Test parameters
    pub parameters: HashMap<String, String>,
    /// Expected baseline metrics
    pub baseline: Option<BaselineMetrics>,
    /// Test timeout in seconds
    pub timeout: Option<u64>,
    /// Number of iterations
    pub iterations: usize,
    /// Warmup iterations
    pub warmup_iterations: usize,
    /// Test dependencies
    pub dependencies: Vec<String>,
    /// Test tags for filtering
    pub tags: Vec<String>,
    /// Test environment requirements
    pub environment_requirements: EnvironmentRequirements,
    /// Custom test configuration
    pub custom_config: HashMap<String, String>,
}

/// Test categories for organization and filtering
#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq, Hash)]
pub enum TestCategory {
    /// Unit performance tests
    Unit,
    /// Integration performance tests
    Integration,
    /// System-wide performance tests
    System,
    /// Load testing
    Load,
    /// Stress testing
    Stress,
    /// Endurance testing
    Endurance,
    /// Spike testing
    Spike,
    /// Volume testing
    Volume,
    /// Security performance tests
    Security,
    /// Regression testing
    Regression,
    /// Benchmark testing
    Benchmark,
    /// Custom test category
    Custom(String),
}

/// Test executors for different types of performance tests
#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
pub enum TestExecutor {
    /// Criterion.rs benchmark executor
    Criterion,
    /// Custom benchmark executor
    Custom(String),
    /// Shell command executor
    Shell,
    /// Docker container executor
    Docker { image: String, options: Vec<String> },
    /// External tool executor
    ExternalTool { tool: String, args: Vec<String> },
    /// Rust binary executor
    RustBinary { binary: String, args: Vec<String> },
    /// Python script executor
    Python { script: String, args: Vec<String> },
}

/// Test suite configuration
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct TestSuiteConfig {
    /// Include unit tests
    pub include_unit: bool,
    /// Include integration tests
    pub include_integration: bool,
    /// Include stress tests
    pub include_stress: bool,
    /// Include load tests
    pub include_load: bool,
    /// Include security tests
    pub include_security: bool,
    /// Test timeout in seconds
    pub default_timeout: u64,
    /// Parallel execution settings
    pub parallel_execution: ParallelExecutionConfig,
    /// Resource monitoring
    pub resource_monitoring: ResourceMonitoringConfig,
    /// Test filtering
    pub filtering: TestFilteringConfig,
    /// Retry configuration
    pub retry_config: TestRetryConfig,
}

/// Parallel execution configuration
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ParallelExecutionConfig {
    /// Enable parallel execution
    pub enabled: bool,
    /// Maximum concurrent tests
    pub max_concurrent: usize,
    /// Thread pool size
    pub thread_pool_size: Option<usize>,
    /// Test grouping strategy
    pub grouping_strategy: TestGroupingStrategy,
    /// Resource allocation per test
    pub resource_allocation: ResourceAllocationConfig,
}

/// Test grouping strategies for parallel execution
#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
pub enum TestGroupingStrategy {
    /// Group by test category
    ByCategory,
    /// Group by execution time
    ByExecutionTime,
    /// Group by resource requirements
    ByResourceRequirements,
    /// No grouping (random)
    None,
    /// Custom grouping
    Custom(String),
}

/// Resource allocation configuration per test
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ResourceAllocationConfig {
    /// CPU cores per test
    pub cpu_cores: Option<usize>,
    /// Memory limit per test (MB)
    pub memory_limit_mb: Option<usize>,
    /// Disk space limit per test (MB)
    pub disk_limit_mb: Option<usize>,
    /// Network bandwidth limit per test (MB/s)
    pub network_limit_mbps: Option<f64>,
}

/// Resource monitoring configuration
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ResourceMonitoringConfig {
    /// Enable CPU monitoring
    pub monitor_cpu: bool,
    /// Enable memory monitoring
    pub monitor_memory: bool,
    /// Enable disk I/O monitoring
    pub monitor_disk_io: bool,
    /// Enable network monitoring
    pub monitor_network: bool,
    /// Monitoring frequency in milliseconds
    pub monitoring_frequency_ms: u64,
    /// Resource alert thresholds
    pub alert_thresholds: ResourceAlertThresholds,
}

/// Resource alert thresholds
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ResourceAlertThresholds {
    /// CPU usage threshold (percentage)
    pub cpu_threshold: f64,
    /// Memory usage threshold (percentage)
    pub memory_threshold: f64,
    /// Disk usage threshold (percentage)
    pub disk_threshold: f64,
    /// Network usage threshold (MB/s)
    pub network_threshold: f64,
}

/// Test filtering configuration
#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub struct TestFilteringConfig {
    /// Include specific test categories
    pub include_categories: Vec<TestCategory>,
    /// Exclude specific test categories
    pub exclude_categories: Vec<TestCategory>,
    /// Include tests with specific tags
    pub include_tags: Vec<String>,
    /// Exclude tests with specific tags
    pub exclude_tags: Vec<String>,
    /// Test name patterns to include
    pub include_patterns: Vec<String>,
    /// Test name patterns to exclude
    pub exclude_patterns: Vec<String>,
    /// Only run tests that match platform
    pub platform_specific: bool,
}

/// Test retry configuration
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct TestRetryConfig {
    /// Enable test retries
    pub enabled: bool,
    /// Maximum number of retries
    pub max_retries: u32,
    /// Delay between retries in seconds
    pub retry_delay_sec: u64,
    /// Exponential backoff multiplier
    pub backoff_multiplier: f64,
    /// Retry on specific failure types
    pub retry_on_failures: Vec<TestFailureType>,
}

/// Types of test failures that can trigger retries
#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
pub enum TestFailureType {
    /// Timeout failures
    Timeout,
    /// Resource exhaustion
    ResourceExhaustion,
    /// Network failures
    Network,
    /// Transient system errors
    TransientError,
    /// Environment setup failures
    EnvironmentSetup,
    /// All failure types
    All,
}

/// Environment requirements for test execution
#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub struct EnvironmentRequirements {
    /// Required operating system
    pub os: Option<String>,
    /// Required architecture
    pub architecture: Option<String>,
    /// Minimum CPU cores
    pub min_cpu_cores: Option<usize>,
    /// Minimum memory in MB
    pub min_memory_mb: Option<usize>,
    /// Required environment variables
    pub required_env_vars: Vec<String>,
    /// Required software dependencies
    pub dependencies: Vec<SoftwareDependency>,
    /// Required network access
    pub network_access: NetworkAccessRequirements,
    /// Required file system permissions
    pub file_permissions: Vec<FilePermissionRequirement>,
}

/// Software dependency specification
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SoftwareDependency {
    /// Dependency name
    pub name: String,
    /// Version requirement
    pub version: Option<String>,
    /// Installation source
    pub source: DependencySource,
    /// Optional installation
    pub optional: bool,
}

/// Dependency installation sources
#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
pub enum DependencySource {
    /// System package manager
    System,
    /// Cargo for Rust crates
    Cargo,
    /// npm for Node.js packages
    Npm,
    /// pip for Python packages
    Pip,
    /// apt for Debian/Ubuntu
    Apt,
    /// yum for RedHat/CentOS
    Yum,
    /// brew for macOS
    Homebrew,
    /// Custom installation script
    Custom(String),
}

/// Network access requirements
#[derive(Debug, Clone, Serialize, Deserialize, Default)]
pub struct NetworkAccessRequirements {
    /// Requires internet access
    pub internet_access: bool,
    /// Required network ports
    pub required_ports: Vec<u16>,
    /// Required domains/hosts
    pub required_hosts: Vec<String>,
    /// Maximum allowed latency in ms
    pub max_latency_ms: Option<u64>,
    /// Minimum required bandwidth in MB/s
    pub min_bandwidth_mbps: Option<f64>,
}

/// File permission requirements
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct FilePermissionRequirement {
    /// File or directory path
    pub path: String,
    /// Required permissions (Unix-style)
    pub permissions: u32,
    /// Must be readable
    pub readable: bool,
    /// Must be writable
    pub writable: bool,
    /// Must be executable
    pub executable: bool,
}

/// Baseline metrics for performance comparison
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct BaselineMetrics {
    /// Execution time baseline
    pub execution_time: Option<MetricBaseline>,
    /// Memory usage baseline
    pub memory_usage: Option<MetricBaseline>,
    /// CPU usage baseline
    pub cpu_usage: Option<MetricBaseline>,
    /// Throughput baseline
    pub throughput: Option<MetricBaseline>,
    /// Custom metrics baselines
    pub custom_metrics: HashMap<String, MetricBaseline>,
}

/// Individual metric baseline
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct MetricBaseline {
    /// Expected value
    pub expected_value: f64,
    /// Acceptable variance (percentage)
    pub variance_threshold: f64,
    /// Upper bound (fail if exceeded)
    pub upper_bound: Option<f64>,
    /// Lower bound (warn if below)
    pub lower_bound: Option<f64>,
    /// Unit of measurement
    pub unit: String,
}

/// CI/CD test execution result
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct CiCdTestResult {
    /// Test case name
    pub test_name: String,
    /// Test execution status
    pub status: TestExecutionStatus,
    /// Execution start time
    pub start_time: SystemTime,
    /// Execution end time
    pub end_time: Option<SystemTime>,
    /// Test duration
    pub duration: Option<Duration>,
    /// Performance measurements
    pub measurements: Vec<PerformanceMeasurement>,
    /// Error message if failed
    pub error_message: Option<String>,
    /// Test output/logs
    pub output: String,
    /// Resource usage during test
    pub resource_usage: ResourceUsageReport,
    /// Test metadata
    pub metadata: TestExecutionMetadata,
    /// Regression analysis results
    pub regression_analysis: Option<RegressionAnalysisResult>,
}

/// Test execution status
#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq, Hash)]
pub enum TestExecutionStatus {
    /// Test passed successfully
    Passed,
    /// Test failed
    Failed,
    /// Test was skipped
    Skipped,
    /// Test timed out
    TimedOut,
    /// Test encountered an error
    Error,
    /// Test execution is pending
    Pending,
    /// Test execution is in progress
    Running,
}

/// Resource usage report
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ResourceUsageReport {
    /// Peak memory usage in MB
    pub peak_memory_mb: f64,
    /// Average CPU usage percentage
    pub avg_cpu_percent: f64,
    /// Peak CPU usage percentage
    pub peak_cpu_percent: f64,
    /// Total disk I/O in MB
    pub disk_io_mb: f64,
    /// Network usage in MB
    pub network_usage_mb: f64,
    /// Detailed resource timeline
    pub timeline: Vec<ResourceSnapshot>,
}

/// Resource usage snapshot at a point in time
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ResourceSnapshot {
    /// Timestamp of the snapshot
    pub timestamp: SystemTime,
    /// Memory usage in MB
    pub memory_mb: f64,
    /// CPU usage percentage
    pub cpu_percent: f64,
    /// Disk I/O rate in MB/s
    pub disk_io_mbps: f64,
    /// Network I/O rate in MB/s
    pub network_mbps: f64,
}

/// Test execution metadata
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct TestExecutionMetadata {
    /// Test executor used
    pub executor: TestExecutor,
    /// Test parameters
    pub parameters: HashMap<String, String>,
    /// Environment information
    pub environment: EnvironmentInfo,
    /// Git information
    pub git_info: Option<GitInfo>,
    /// CI/CD context
    pub ci_context: Option<CiCdContext>,
    /// Test configuration
    pub test_config: TestConfiguration,
}

/// Git repository information
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct GitInfo {
    /// Current commit hash
    pub commit_hash: String,
    /// Current branch name
    pub branch: String,
    /// Commit message
    pub commit_message: Option<String>,
    /// Commit author
    pub author: Option<String>,
    /// Commit timestamp
    pub commit_time: Option<SystemTime>,
    /// Repository URL
    pub repository_url: Option<String>,
    /// Is working directory clean
    pub is_clean: bool,
}

/// CI/CD execution context
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct CiCdContext {
    /// CI/CD platform
    pub platform: CiCdPlatform,
    /// Build/job ID
    pub build_id: String,
    /// Build number
    pub build_number: Option<u64>,
    /// Trigger event
    pub trigger: TriggerEvent,
    /// Environment variables
    pub environment_vars: HashMap<String, String>,
    /// Build URL
    pub build_url: Option<String>,
    /// Pull request information
    pub pull_request: Option<PullRequestInfo>,
    /// Triggered by user
    pub triggered_by: Option<String>,
}

/// Events that can trigger CI/CD execution
#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
pub enum TriggerEvent {
    /// Triggered by code push
    Push,
    /// Triggered by pull request
    PullRequest,
    /// Triggered by release/tag
    Release,
    /// Triggered by scheduled event
    Schedule,
    /// Manually triggered
    Manual,
    /// Triggered by API call
    Api,
    /// Triggered by webhook
    Webhook,
}

/// Pull request information
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct PullRequestInfo {
    /// Pull request number
    pub number: u64,
    /// Source branch
    pub source_branch: String,
    /// Target branch
    pub target_branch: String,
    /// Pull request title
    pub title: String,
    /// Pull request author
    pub author: String,
    /// Pull request URL
    pub url: Option<String>,
}

/// Regression analysis result
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct RegressionAnalysisResult {
    /// Whether regression was detected
    pub regression_detected: bool,
    /// Confidence level of the detection
    pub confidence: f64,
    /// Affected metrics
    pub affected_metrics: Vec<String>,
    /// Performance change percentage
    pub performance_change_percent: f64,
    /// Statistical significance
    pub statistical_significance: f64,
    /// Recommendations
    pub recommendations: Vec<String>,
}

impl PerformanceTestSuite {
    /// Create a new performance test suite
    pub fn new(config: TestSuiteConfig) -> Result<Self> {
        Ok(Self {
            test_cases: Vec::new(),
            config,
            context: None,
            results: Vec::new(),
        })
    }

    /// Add a test case to the suite
    pub fn add_test_case(&mut self, test_case: PerformanceTestCase) {
        self.test_cases.push(test_case);
    }

    /// Set the execution context
    pub fn set_context(&mut self, context: CiCdContext) {
        self.context = Some(context);
    }

    /// Execute all test cases in the suite
    pub fn execute(&mut self) -> Result<Vec<CiCdTestResult>> {
        // Filter test cases based on configuration
        let filtered_tests = self.filter_test_cases()?;

        // Execute tests based on parallel configuration
        let results = if self.config.parallel_execution.enabled {
            self.execute_parallel(&filtered_tests)?
        } else {
            self.execute_sequential(&filtered_tests)?
        };

        self.results = results.clone();
        Ok(results)
    }

    /// Filter test cases based on configuration
    fn filter_test_cases(&self) -> Result<Vec<&PerformanceTestCase>> {
        let mut filtered = Vec::new();

        for test_case in &self.test_cases {
            if self.should_include_test_case(test_case) {
                filtered.push(test_case);
            }
        }

        Ok(filtered)
    }

    /// Check if a test case should be included based on filtering configuration
    fn should_include_test_case(&self, test_case: &PerformanceTestCase) -> bool {
        let filtering = &self.config.filtering;

        // Check category inclusion
        if !filtering.include_categories.is_empty()
            && !filtering.include_categories.contains(&test_case.category)
        {
            return false;
        }

        // Check category exclusion
        if filtering.exclude_categories.contains(&test_case.category) {
            return false;
        }

        // Check tag inclusion
        if !filtering.include_tags.is_empty() {
            let has_included_tag = filtering
                .include_tags
                .iter()
                .any(|tag| test_case.tags.contains(tag));
            if !has_included_tag {
                return false;
            }
        }

        // Check tag exclusion
        for excluded_tag in &filtering.exclude_tags {
            if test_case.tags.contains(excluded_tag) {
                return false;
            }
        }

        // Check name patterns (simplified regex matching)
        if !filtering.include_patterns.is_empty() {
            let matches_pattern = filtering
                .include_patterns
                .iter()
                .any(|pattern| test_case.name.contains(pattern));
            if !matches_pattern {
                return false;
            }
        }

        for excluded_pattern in &filtering.exclude_patterns {
            if test_case.name.contains(excluded_pattern) {
                return false;
            }
        }

        true
    }

    /// Execute test cases sequentially
    fn execute_sequential(
        &self,
        test_cases: &[&PerformanceTestCase],
    ) -> Result<Vec<CiCdTestResult>> {
        let mut results = Vec::new();

        for test_case in test_cases {
            let result = self.execute_single_test(test_case)?;
            results.push(result);

            // Check if we should stop on failure
            if let TestExecutionStatus::Failed | TestExecutionStatus::Error =
                results.last().expect("unwrap failed").status
            {
                // For now, continue execution even on failures
                // In the future, this could be configurable
            }
        }

        Ok(results)
    }

    /// Execute test cases in parallel
    fn execute_parallel(&self, test_cases: &[&PerformanceTestCase]) -> Result<Vec<CiCdTestResult>> {
        // Simplified parallel execution - in a real implementation,
        // this would use proper thread pools and resource management
        let mut results = Vec::new();

        let max_concurrent = self.config.parallel_execution.max_concurrent;
        let chunks: Vec<_> = test_cases.chunks(max_concurrent).collect();

        for chunk in chunks {
            let mut chunk_results = Vec::new();

            for test_case in chunk {
                let result = self.execute_single_test(test_case)?;
                chunk_results.push(result);
            }

            results.extend(chunk_results);
        }

        Ok(results)
    }

    /// Execute a single test case
    fn execute_single_test(&self, test_case: &PerformanceTestCase) -> Result<CiCdTestResult> {
        let start_time = SystemTime::now();
        let mut result = CiCdTestResult {
            test_name: test_case.name.clone(),
            status: TestExecutionStatus::Running,
            start_time,
            end_time: None,
            duration: None,
            measurements: Vec::new(),
            error_message: None,
            output: String::new(),
            resource_usage: ResourceUsageReport::default(),
            metadata: self.create_test_metadata(test_case)?,
            regression_analysis: None,
        };

        // Check environment requirements
        if let Err(e) = self.check_environment_requirements(&test_case.environment_requirements) {
            result.status = TestExecutionStatus::Error;
            result.error_message = Some(format!("Environment requirements not met: {}", e));
            result.end_time = Some(SystemTime::now());
            return Ok(result);
        }

        // Execute the test based on its executor type
        match self.execute_test_by_executor(test_case) {
            Ok((measurements, output)) => {
                result.status = TestExecutionStatus::Passed;
                result.measurements = measurements;
                result.output = output;
            }
            Err(e) => {
                result.status = TestExecutionStatus::Failed;
                result.error_message = Some(e.to_string());
            }
        }

        let end_time = SystemTime::now();
        result.end_time = Some(end_time);
        result.duration = end_time.duration_since(start_time).ok();

        // Generate resource usage report (simplified)
        result.resource_usage = self.generate_resource_usage_report(start_time, end_time)?;

        Ok(result)
    }

    /// Execute test based on its executor type
    fn execute_test_by_executor(
        &self,
        test_case: &PerformanceTestCase,
    ) -> Result<(Vec<PerformanceMeasurement>, String)> {
        match &test_case.executor {
            TestExecutor::Criterion => self.execute_criterion_test(test_case),
            TestExecutor::Custom(cmd) => self.execute_custom_test(test_case, cmd),
            TestExecutor::Shell => self.execute_shell_test(test_case),
            TestExecutor::Docker { image, options } => {
                self.execute_docker_test(test_case, image, options)
            }
            TestExecutor::ExternalTool { tool, args } => {
                self.execute_external_tool_test(test_case, tool, args)
            }
            TestExecutor::RustBinary { binary, args } => {
                self.execute_rust_binary_test(test_case, binary, args)
            }
            TestExecutor::Python { script, args } => {
                self.execute_python_test(test_case, script, args)
            }
        }
    }

    /// Execute a Criterion.rs benchmark test
    fn execute_criterion_test(
        &self,
        test_case: &PerformanceTestCase,
    ) -> Result<(Vec<PerformanceMeasurement>, String)> {
        // Simplified Criterion execution
        let iterations = test_case
            .parameters
            .get("iterations")
            .and_then(|s| s.parse::<usize>().ok())
            .unwrap_or(test_case.iterations);

        let start = Instant::now();
        let result = self.execute_simple_loop_benchmark(iterations);
        let duration = start.elapsed();

        let mut metrics = HashMap::new();
        metrics.insert(
            crate::performance_regression_detector::MetricType::ExecutionTime,
            MetricValue {
                value: duration.as_secs_f64(),
                std_dev: None,
                sample_count: 1,
                min_value: duration.as_secs_f64(),
                max_value: duration.as_secs_f64(),
                percentiles: None,
            },
        );

        let measurement = PerformanceMeasurement {
            timestamp: SystemTime::now(),
            commithash: "unknown".to_string(), // Would need git integration
            branch: "unknown".to_string(),     // Would need git integration
            build_config: "unknown".to_string(), // Would need build config detection
            environment: crate::performance_regression_detector::EnvironmentInfo {
                os: std::env::consts::OS.to_string(),
                cpu_model: std::env::consts::ARCH.to_string(),
                cpu_cores: num_cpus::get(),
                total_memory_mb: 0,
                gpu_info: None,
                compiler_version: "unknown".to_string(),
                rust_version: "unknown".to_string(),
                env_vars: HashMap::new(),
            },
            metrics,
            test_config: crate::performance_regression_detector::TestConfiguration {
                test_name: test_case.name.clone(),
                parameters: test_case.parameters.clone(),
                dataset_size: None,
                iterations: Some(1),
                batch_size: None,
                precision: "f64".to_string(),
            },
            metadata: HashMap::new(),
        };

        let output = format!("Criterion benchmark completed in {:?}", duration);
        Ok((vec![measurement], output))
    }

    /// Execute a simple loop benchmark (placeholder)
    fn execute_simple_loop_benchmark(&self, iterations: usize) -> f64 {
        let start = Instant::now();
        let mut sum = 0u64;
        for i in 0..iterations {
            sum = sum.wrapping_add(i as u64);
        }
        let _ = sum; // Use the result to prevent optimization
        start.elapsed().as_secs_f64()
    }

    /// Execute a custom test command
    fn execute_custom_test(
        &self,
        test_case: &PerformanceTestCase,
        command: &str,
    ) -> Result<(Vec<PerformanceMeasurement>, String)> {
        let output = Command::new("sh")
            .arg("-c")
            .arg(command)
            .output()
            .map_err(|e| {
                OptimError::InvalidConfig(format!("Failed to execute custom test: {}", e))
            })?;

        let output_str = String::from_utf8_lossy(&output.stdout).to_string();

        // Parse output for performance measurements (simplified)
        let measurements = self.parse_performance_output(&output_str, test_case)?;

        Ok((measurements, output_str))
    }

    /// Execute a shell test
    fn execute_shell_test(
        &self,
        test_case: &PerformanceTestCase,
    ) -> Result<(Vec<PerformanceMeasurement>, String)> {
        let command = test_case.parameters.get("command").ok_or_else(|| {
            OptimError::InvalidConfig("Shell test requires 'command' parameter".to_string())
        })?;

        self.execute_custom_test(test_case, command)
    }

    /// Execute a Docker-based test
    fn execute_docker_test(
        &self,
        test_case: &PerformanceTestCase,
        image: &str,
        options: &[String],
    ) -> Result<(Vec<PerformanceMeasurement>, String)> {
        let mut cmd = Command::new("docker");
        cmd.arg("run");

        for option in options {
            cmd.arg(option);
        }

        cmd.arg(image);

        if let Some(command) = test_case.parameters.get("command") {
            cmd.args(command.split_whitespace());
        }

        let output = cmd.output().map_err(|e| {
            OptimError::InvalidConfig(format!("Failed to execute Docker test: {}", e))
        })?;

        let output_str = String::from_utf8_lossy(&output.stdout).to_string();
        let measurements = self.parse_performance_output(&output_str, test_case)?;

        Ok((measurements, output_str))
    }

    /// Execute an external tool test
    fn execute_external_tool_test(
        &self,
        test_case: &PerformanceTestCase,
        tool: &str,
        args: &[String],
    ) -> Result<(Vec<PerformanceMeasurement>, String)> {
        let mut cmd = Command::new(tool);
        cmd.args(args);

        let output = cmd.output().map_err(|e| {
            OptimError::InvalidConfig(format!("Failed to execute external tool: {}", e))
        })?;

        let output_str = String::from_utf8_lossy(&output.stdout).to_string();
        let measurements = self.parse_performance_output(&output_str, test_case)?;

        Ok((measurements, output_str))
    }

    /// Execute a Rust binary test
    fn execute_rust_binary_test(
        &self,
        test_case: &PerformanceTestCase,
        binary: &str,
        args: &[String],
    ) -> Result<(Vec<PerformanceMeasurement>, String)> {
        let mut cmd = Command::new("cargo");
        cmd.arg("run").arg("--bin").arg(binary).arg("--");
        cmd.args(args);

        let output = cmd.output().map_err(|e| {
            OptimError::InvalidConfig(format!("Failed to execute Rust binary: {}", e))
        })?;

        let output_str = String::from_utf8_lossy(&output.stdout).to_string();
        let measurements = self.parse_performance_output(&output_str, test_case)?;

        Ok((measurements, output_str))
    }

    /// Execute a Python script test
    fn execute_python_test(
        &self,
        test_case: &PerformanceTestCase,
        script: &str,
        args: &[String],
    ) -> Result<(Vec<PerformanceMeasurement>, String)> {
        let mut cmd = Command::new("python");
        cmd.arg(script);
        cmd.args(args);

        let output = cmd.output().map_err(|e| {
            OptimError::InvalidConfig(format!("Failed to execute Python script: {}", e))
        })?;

        let output_str = String::from_utf8_lossy(&output.stdout).to_string();
        let measurements = self.parse_performance_output(&output_str, test_case)?;

        Ok((measurements, output_str))
    }

    /// Parse performance output for measurements (simplified)
    fn parse_performance_output(
        &self,
        output: &str,
        test_case: &PerformanceTestCase,
    ) -> Result<Vec<PerformanceMeasurement>> {
        let mut measurements = Vec::new();

        // Simple parsing - look for common patterns
        for line in output.lines() {
            if line.contains("time:") || line.contains("duration:") {
                if let Some(duration_str) = self.extract_duration_from_line(line) {
                    if let Ok(duration) = duration_str.parse::<f64>() {
                        let mut metrics = HashMap::new();
                        metrics.insert(
                            crate::performance_regression_detector::MetricType::ExecutionTime,
                            MetricValue {
                                value: duration,
                                std_dev: None,
                                sample_count: 1,
                                min_value: duration,
                                max_value: duration,
                                percentiles: None,
                            },
                        );

                        measurements.push(PerformanceMeasurement {
                            timestamp: SystemTime::now(),
                            commithash: "unknown".to_string(),
                            branch: "unknown".to_string(),
                            build_config: "unknown".to_string(),
                            environment: crate::performance_regression_detector::EnvironmentInfo {
                                os: std::env::consts::OS.to_string(),
                                cpu_model: std::env::consts::ARCH.to_string(),
                                cpu_cores: num_cpus::get(),
                                total_memory_mb: 0,
                                gpu_info: None,
                                compiler_version: "unknown".to_string(),
                                rust_version: "unknown".to_string(),
                                env_vars: HashMap::new(),
                            },
                            metrics,
                            test_config:
                                crate::performance_regression_detector::TestConfiguration {
                                    test_name: test_case.name.clone(),
                                    parameters: test_case.parameters.clone(),
                                    dataset_size: None,
                                    iterations: Some(1),
                                    batch_size: None,
                                    precision: "f64".to_string(),
                                },
                            metadata: HashMap::new(),
                        });
                    }
                }
            }
        }

        // If no measurements found, create a default one
        if measurements.is_empty() {
            let mut metrics = HashMap::new();
            metrics.insert(
                crate::performance_regression_detector::MetricType::ExecutionTime,
                MetricValue {
                    value: 1.0, // Default 1 second
                    std_dev: None,
                    sample_count: 1,
                    min_value: 1.0,
                    max_value: 1.0,
                    percentiles: None,
                },
            );

            measurements.push(PerformanceMeasurement {
                timestamp: SystemTime::now(),
                commithash: "unknown".to_string(),
                branch: "unknown".to_string(),
                build_config: "unknown".to_string(),
                environment: crate::performance_regression_detector::EnvironmentInfo {
                    os: std::env::consts::OS.to_string(),
                    cpu_model: std::env::consts::ARCH.to_string(),
                    cpu_cores: num_cpus::get(),
                    total_memory_mb: 0,
                    gpu_info: None,
                    compiler_version: "unknown".to_string(),
                    rust_version: "unknown".to_string(),
                    env_vars: HashMap::new(),
                },
                metrics,
                test_config: crate::performance_regression_detector::TestConfiguration {
                    test_name: test_case.name.clone(),
                    parameters: test_case.parameters.clone(),
                    dataset_size: None,
                    iterations: Some(1),
                    batch_size: None,
                    precision: "f64".to_string(),
                },
                metadata: HashMap::new(),
            });
        }

        Ok(measurements)
    }

    /// Extract duration value from a text line (simplified)
    fn extract_duration_from_line(&self, line: &str) -> Option<String> {
        // Simple regex-like extraction
        let parts: Vec<&str> = line.split_whitespace().collect();
        for i in 0..parts.len() {
            if (parts[i].contains("time") || parts[i].contains("duration")) && i + 1 < parts.len() {
                return Some(parts[i + 1].replace("ms", "").replace("s", ""));
            }
        }
        None
    }

    /// Check environment requirements
    fn check_environment_requirements(&self, requirements: &EnvironmentRequirements) -> Result<()> {
        // Check OS requirement
        if let Some(required_os) = &requirements.os {
            let current_os = std::env::consts::OS;
            if current_os != required_os {
                return Err(OptimError::InvalidConfig(format!(
                    "Required OS: {}, Current OS: {}",
                    required_os, current_os
                )));
            }
        }

        // Check architecture requirement
        if let Some(required_arch) = &requirements.architecture {
            let current_arch = std::env::consts::ARCH;
            if current_arch != required_arch {
                return Err(OptimError::InvalidConfig(format!(
                    "Required architecture: {}, Current architecture: {}",
                    required_arch, current_arch
                )));
            }
        }

        // Check CPU cores requirement
        if let Some(min_cores) = requirements.min_cpu_cores {
            let available_cores = num_cpus::get();
            if available_cores < min_cores {
                return Err(OptimError::InvalidConfig(format!(
                    "Required CPU cores: {}, Available: {}",
                    min_cores, available_cores
                )));
            }
        }

        // Check environment variables
        for env_var in &requirements.required_env_vars {
            if std::env::var(env_var).is_err() {
                return Err(OptimError::InvalidConfig(format!(
                    "Required environment variable not set: {}",
                    env_var
                )));
            }
        }

        Ok(())
    }

    /// Create test execution metadata
    fn create_test_metadata(
        &self,
        test_case: &PerformanceTestCase,
    ) -> Result<TestExecutionMetadata> {
        Ok(TestExecutionMetadata {
            executor: test_case.executor.clone(),
            parameters: test_case.parameters.clone(),
            environment: self.gather_environment_info()?,
            git_info: self.gather_git_info().ok(),
            ci_context: self.context.clone(),
            test_config: crate::performance_regression_detector::TestConfiguration {
                test_name: test_case.name.clone(),
                parameters: test_case.parameters.clone(),
                dataset_size: None,
                iterations: Some(test_case.iterations),
                batch_size: None,
                precision: "f64".to_string(),
            },
        })
    }

    /// Gather environment information
    fn gather_environment_info(
        &self,
    ) -> Result<crate::performance_regression_detector::EnvironmentInfo> {
        Ok(crate::performance_regression_detector::EnvironmentInfo {
            os: std::env::consts::OS.to_string(),
            cpu_model: std::env::consts::ARCH.to_string(),
            cpu_cores: num_cpus::get(),
            total_memory_mb: 0, // Would need platform-specific code
            gpu_info: None,
            compiler_version: "unknown".to_string(),
            rust_version: "unknown".to_string(),
            env_vars: std::env::vars().collect(),
        })
    }

    /// Gather Git repository information
    fn gather_git_info(&self) -> Result<GitInfo> {
        // Simplified Git info gathering
        let commit_hash = Command::new("git")
            .args(["rev-parse", "HEAD"])
            .output()
            .map(|output| String::from_utf8_lossy(&output.stdout).trim().to_string())
            .unwrap_or_else(|_| "unknown".to_string());

        let branch = Command::new("git")
            .args(["rev-parse", "--abbrev-ref", "HEAD"])
            .output()
            .map(|output| String::from_utf8_lossy(&output.stdout).trim().to_string())
            .unwrap_or_else(|_| "unknown".to_string());

        Ok(GitInfo {
            commit_hash,
            branch,
            commit_message: None,
            author: None,
            commit_time: None,
            repository_url: None,
            is_clean: true, // Simplified
        })
    }

    /// Generate resource usage report (simplified)
    fn generate_resource_usage_report(
        &self,
        start_time: SystemTime,
        end_time: SystemTime,
    ) -> Result<ResourceUsageReport> {
        Ok(ResourceUsageReport {
            peak_memory_mb: 100.0,  // Placeholder
            avg_cpu_percent: 50.0,  // Placeholder
            peak_cpu_percent: 80.0, // Placeholder
            disk_io_mb: 10.0,       // Placeholder
            network_usage_mb: 1.0,  // Placeholder
            timeline: vec![
                ResourceSnapshot {
                    timestamp: start_time,
                    memory_mb: 80.0,
                    cpu_percent: 40.0,
                    disk_io_mbps: 1.0,
                    network_mbps: 0.1,
                },
                ResourceSnapshot {
                    timestamp: end_time,
                    memory_mb: 100.0,
                    cpu_percent: 60.0,
                    disk_io_mbps: 2.0,
                    network_mbps: 0.2,
                },
            ],
        })
    }

    /// Get test suite statistics
    pub fn get_statistics(&self) -> TestSuiteStatistics {
        let total_tests = self.results.len();
        let passed = self
            .results
            .iter()
            .filter(|r| r.status == TestExecutionStatus::Passed)
            .count();
        let failed = self
            .results
            .iter()
            .filter(|r| r.status == TestExecutionStatus::Failed)
            .count();
        let skipped = self
            .results
            .iter()
            .filter(|r| r.status == TestExecutionStatus::Skipped)
            .count();
        let errors = self
            .results
            .iter()
            .filter(|r| r.status == TestExecutionStatus::Error)
            .count();

        let total_duration = self
            .results
            .iter()
            .filter_map(|r| r.duration)
            .fold(Duration::ZERO, |acc, d| acc + d);

        TestSuiteStatistics {
            total_tests,
            passed,
            failed,
            skipped,
            errors,
            total_duration,
            success_rate: if total_tests > 0 {
                passed as f64 / total_tests as f64
            } else {
                0.0
            },
        }
    }
}

/// Test suite execution statistics
#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
pub struct TestSuiteStatistics {
    /// Total number of tests
    pub total_tests: usize,
    /// Number of passed tests
    pub passed: usize,
    /// Number of failed tests
    pub failed: usize,
    /// Number of skipped tests
    pub skipped: usize,
    /// Number of error tests
    pub errors: usize,
    /// Total execution duration
    pub total_duration: Duration,
    /// Success rate (0.0 to 1.0)
    pub success_rate: f64,
}

// Default implementations

impl Default for TestSuiteConfig {
    fn default() -> Self {
        Self {
            include_unit: true,
            include_integration: true,
            include_stress: false,
            include_load: false,
            include_security: false,
            default_timeout: 300, // 5 minutes
            parallel_execution: ParallelExecutionConfig::default(),
            resource_monitoring: ResourceMonitoringConfig::default(),
            filtering: TestFilteringConfig::default(),
            retry_config: TestRetryConfig::default(),
        }
    }
}

impl Default for ParallelExecutionConfig {
    fn default() -> Self {
        Self {
            enabled: true,
            max_concurrent: num_cpus::get(),
            thread_pool_size: None,
            grouping_strategy: TestGroupingStrategy::ByCategory,
            resource_allocation: ResourceAllocationConfig::default(),
        }
    }
}

impl Default for ResourceAllocationConfig {
    fn default() -> Self {
        Self {
            cpu_cores: None,
            memory_limit_mb: Some(1024), // 1GB per test
            disk_limit_mb: Some(10240),  // 10GB per test
            network_limit_mbps: None,
        }
    }
}

impl Default for ResourceMonitoringConfig {
    fn default() -> Self {
        Self {
            monitor_cpu: true,
            monitor_memory: true,
            monitor_disk_io: false,
            monitor_network: false,
            monitoring_frequency_ms: 1000, // 1 second
            alert_thresholds: ResourceAlertThresholds::default(),
        }
    }
}

impl Default for ResourceAlertThresholds {
    fn default() -> Self {
        Self {
            cpu_threshold: 90.0,      // 90% CPU
            memory_threshold: 85.0,   // 85% memory
            disk_threshold: 90.0,     // 90% disk
            network_threshold: 100.0, // 100 MB/s
        }
    }
}

impl Default for TestRetryConfig {
    fn default() -> Self {
        Self {
            enabled: true,
            max_retries: 3,
            retry_delay_sec: 5,
            backoff_multiplier: 2.0,
            retry_on_failures: vec![
                TestFailureType::Timeout,
                TestFailureType::TransientError,
                TestFailureType::Network,
            ],
        }
    }
}

impl Default for ResourceUsageReport {
    fn default() -> Self {
        Self {
            peak_memory_mb: 0.0,
            avg_cpu_percent: 0.0,
            peak_cpu_percent: 0.0,
            disk_io_mb: 0.0,
            network_usage_mb: 0.0,
            timeline: Vec::new(),
        }
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_test_suite_creation() {
        let config = TestSuiteConfig::default();
        let suite = PerformanceTestSuite::new(config);
        assert!(suite.is_ok());
    }

    #[test]
    fn test_test_case_filtering() {
        let mut suite =
            PerformanceTestSuite::new(TestSuiteConfig::default()).expect("unwrap failed");

        let test_case = PerformanceTestCase {
            name: "test1".to_string(),
            category: TestCategory::Unit,
            executor: TestExecutor::Criterion,
            parameters: HashMap::new(),
            baseline: None,
            timeout: None,
            iterations: 5,
            warmup_iterations: 1,
            dependencies: Vec::new(),
            tags: vec!["fast".to_string()],
            environment_requirements: EnvironmentRequirements::default(),
            custom_config: HashMap::new(),
        };

        suite.add_test_case(test_case);
        assert_eq!(suite.test_cases.len(), 1);
    }

    #[test]
    fn test_environment_requirements_validation() {
        let suite = PerformanceTestSuite::new(TestSuiteConfig::default()).expect("unwrap failed");
        let requirements = EnvironmentRequirements::default();
        assert!(suite.check_environment_requirements(&requirements).is_ok());
    }

    #[test]
    fn test_test_execution_status() {
        assert_eq!(TestExecutionStatus::Passed, TestExecutionStatus::Passed);
        assert_ne!(TestExecutionStatus::Passed, TestExecutionStatus::Failed);
    }

    #[test]
    fn test_resource_monitoring_config() {
        let config = ResourceMonitoringConfig::default();
        assert!(config.monitor_cpu);
        assert!(config.monitor_memory);
        assert_eq!(config.monitoring_frequency_ms, 1000);
    }
}