Skip to content

TESTING.md

Latest commit

 

History

History
334 lines (249 loc) · 7.62 KB

TESTING.md

File metadata and controls

334 lines (249 loc) · 7.62 KB

LoggerLibrary Testing Guide

Author: Ömer Bulut

This document provides comprehensive information about testing the LoggerLibrary, including unit tests, performance benchmarks, and stress tests for enterprise-grade quality assurance.

🧪 Test Suite Overview

The LoggerLibrary includes a comprehensive test suite designed for enterprise-grade applications:

Test Categories

  1. Basic Functionality Tests (SimpleLoggerTest.cpp)

    • Basic logger creation and configuration
    • Log level functionality
    • Simple logging operations

  2. Unit Tests (LoggerTest.cpp)

    • Comprehensive API testing
    • Configuration management
    • Error handling scenarios
    • File rotation testing

  3. Performance Tests (PerformanceTest.cpp) 🚀

    • Throughput benchmarks (messages per second)
    • Latency measurements
    • Memory usage analysis
    • Multi-threaded performance
    • Performance regression detection

  4. Stress Tests (StressTest.cpp) 💪

    • Extreme load testing
    • Memory pressure testing
    • CPU pressure testing
    • Long-running stability tests
    • Resource exhaustion scenarios

🏗️ Building Tests

Using Makefile (Recommended)

# Build all tests
make all

# Build specific test suites
make unit_tests
make simple_tests
make performance_tests
make stress_tests

# Build and run all tests
make run-all

# Enterprise-grade test suite
make enterprise-test

Using CMake

# Create build directory
mkdir build && cd build

# Configure and build
cmake ..
make

# Run specific test suites
make basic-tests      # Unit + Simple tests
make performance-tests # Performance benchmarks
make stress-tests     # Stress and stability
make enterprise-tests # Complete test suite

🚀 Performance Testing

Throughput Benchmarks

Performance tests measure the logger's ability to handle high message volumes:

  • Synchronous Throughput: > 10,000 msg/sec
  • Asynchronous Throughput: > 50,000 msg/sec
  • Multi-threaded Throughput: > 100,000 msg/sec
  • Stress Test Throughput: > 200,000 msg/sec

Latency Requirements

Enterprise-grade latency expectations:

  • Average Latency: < 1ms per message
  • Maximum Latency: < 10ms per message
  • File Rotation Latency: < 5ms impact

Memory Usage Standards

Memory efficiency requirements:

  • Memory Increase: < 50MB under load
  • Total Memory Usage: < 200MB
  • Available Memory: > 100MB maintained

💪 Stress Testing

Load Testing Scenarios

  1. Extreme Load Test

    • Target: 5 million messages
    • Threads: 16 concurrent
    • Success Rate: > 99%
    • Failure Rate: < 1%

  2. Memory Pressure Test

    • Target: 1 million large messages
    • Message Size: Up to 10KB
    • Memory Growth: < 100MB
    • Garbage Collection: Efficient

  3. CPU Pressure Test

    • Target: 500K messages with CPU work
    • CPU-Intensive: Mathematical operations
    • Success Rate: > 95%
    • Throughput: > 5K msg/sec under load

  4. Long-Running Stability Test

    • Duration: 5 minutes continuous
    • Threads: 6 concurrent
    • Error Rate: < 1%
    • Resource Stability: Maintained

Resource Exhaustion Testing

Tests logger behavior under resource constraints:

  • Small Queue Size: 100 messages
  • Limited File Size: 1KB per file
  • Few Log Files: Maximum 2 files
  • Graceful Degradation: Expected

📊 Test Execution

Running Individual Test Suites

# Basic functionality
make simple-test

# Unit tests
make test

# Performance benchmarks
make performance-test

# Stress testing
make stress-test

Complete Enterprise Test Suite

# Run all tests with enterprise-grade validation
make enterprise-test

This command runs:

  1. Basic functionality validation
  2. Unit test coverage
  3. Performance benchmarks
  4. Stress and stability tests

Test Output Examples

Performance Test Output

=== ASYNCHRONOUS THROUGHPUT TEST ===
Messages: 100000
Duration: 1850000 μs
Throughput: 54054.05 msg/sec

Stress Test Output

=== HIGH LOAD STRESS TEST ===
Threads: 16
Success Count: 1000000
Failure Count: 0
Duration: 4.2 seconds
Throughput: 238095.24 msg/sec

🔍 Test Configuration

Performance Test Configuration

Logger::Config perfConfig;
perfConfig.logFilePath = "test_logs/performance.log";
perfConfig.minLevel = Logger::LogLevel::INFO;
perfConfig.asyncLogging = true;
perfConfig.maxFileSize = 100 * 1024 * 1024; // 100MB
perfConfig.maxFiles = 5;
perfConfig.queueSize = 100000;

Stress Test Configuration

Logger::Config stressConfig;
stressConfig.logFilePath = "stress_logs/stress.log";
stressConfig.minLevel = Logger::LogLevel::WARNING;
stressConfig.asyncLogging = true;
stressConfig.maxFileSize = 50 * 1024 * 1024; // 50MB
stressConfig.maxFiles = 10;
stressConfig.queueSize = 500000;

📈 Performance Metrics

Key Performance Indicators (KPIs)

  1. Throughput (msg/sec)

    • Minimum: 10,000 msg/sec
    • Target: 100,000+ msg/sec
    • Peak: 200,000+ msg/sec

  2. Latency (μs)

    • Average: < 1,000 μs
    • 95th Percentile: < 5,000 μs
    • Maximum: < 10,000 μs

  3. Memory Efficiency

    • Growth Rate: < 50MB under load
    • Peak Usage: < 200MB
    • Cleanup Efficiency: > 90%

  4. Reliability

    • Success Rate: > 99%
    • Error Rate: < 1%
    • Stability: 5+ minutes continuous

🐛 Troubleshooting

Common Test Issues

  1. Performance Test Failures

    • Check system resources (CPU, memory)
    • Verify spdlog installation
    • Check file system performance

  2. Stress Test Timeouts

    • Increase test timeouts in CMakeLists.txt
    • Reduce test load if system is limited
    • Check for system resource constraints

  3. Memory Test Failures

    • Monitor system memory usage
    • Check for memory leaks
    • Verify garbage collection

Debug Mode

Enable debug output for detailed test information:

# Verbose test output
./performance_tests --gtest_verbose

# Specific test execution
./stress_tests --gtest_filter=StressTest.HighLoadStressTest

📋 Test Coverage

Functionality Coverage

  • ✅ Logger creation and configuration
  • ✅ All log levels (TRACE to FATAL)
  • ✅ Synchronous and asynchronous logging
  • ✅ File rotation and management
  • ✅ Multi-threading support
  • ✅ Error handling and recovery

Performance Coverage

  • ✅ Throughput benchmarking
  • ✅ Latency measurement
  • ✅ Memory usage analysis
  • ✅ CPU utilization testing
  • ✅ Multi-threaded scaling
  • ✅ Performance regression detection

Stress Coverage

  • ✅ Extreme load handling
  • ✅ Memory pressure scenarios
  • ✅ CPU pressure scenarios
  • ✅ Long-running stability
  • ✅ Resource exhaustion
  • ✅ Graceful degradation

🎯 Enterprise-Grade Requirements

Production Readiness Criteria

  1. Performance Standards

    • Throughput: > 100K msg/sec sustained
    • Latency: < 1ms average
    • Memory: < 200MB peak usage

  2. Reliability Standards

    • Success Rate: > 99.9%
    • Uptime: 99.9% availability
    • Error Recovery: Automatic

  3. Scalability Standards

    • Thread Scaling: Linear up to 16 threads
    • Load Scaling: Linear up to 1M messages
    • Resource Scaling: Predictable growth

  4. Monitoring Standards

    • Performance Metrics: Real-time
    • Error Tracking: Comprehensive
    • Resource Monitoring: Continuous

📚 Additional Resources

  • Logger.hpp: Main library implementation
  • README.md: Library overview and usage
  • example.cpp: Basic usage examples
  • CMakeLists.txt: Build configuration
  • Makefile: Alternative build system

For enterprise support and custom testing scenarios, contact: Ömer Bulut

This testing guide ensures LoggerLibrary meets enterprise-grade quality standards for production deployment.