Terraphim AI documentation

Comprehensive Testing Strategies for Terraphim

Overview

This document outlines the comprehensive testing framework developed for Terraphim AI, covering knowledge graph validation, dual haystack systems, atomic server integration, and ranking expansion testing.

Testing Framework Architecture

Core Testing Categories

  1. Knowledge Graph Testing - Validates KG construction, synonym extraction, and search ranking
  2. Dual Haystack Testing - Validates multiple search backend integration
  3. Atomic Server Integration - Tests external service connectivity and data synchronization
  4. Ranking Expansion Testing - Measures performance improvements from KG enhancements
  5. MCP Server Testing - Validates Model Context Protocol server functionality

Knowledge Graph Testing Framework

Primary Test Files

  • crates/terraphim_middleware/tests/knowledge_graph_ranking_expansion_test.rs
  • crates/terraphim_middleware/tests/rolegraph_knowledge_graph_ranking_test.rs

Knowledge Graph Test Coverage

1. KG Construction Validation

// Build thesaurus from local markdown files
let logseq_builder = Logseq::default();
let thesaurus = logseq_builder
    .build("Terraphim Engineer".to_string(), kg_path)
    .await?;

// Verify extraction results
assert_eq!(thesaurus.len(), expected_term_count);

Validates:

  • Logseq builder extracts synonyms using synonyms:: syntax
  • Proper concept mapping from synonyms to normalized terms
  • Thesaurus construction from docs/src/kg markdown files

2. Graph Structure Measurement

// Precise counting methods
let nodes_count = rolegraph.nodes_map().len();
let edges_count = rolegraph.edges_map().len();
let documents_count = rolegraph.get_all_documents().count();

Validates:

  • Accurate node and edge counting
  • Document indexing into rolegraph
  • Graph structure growth measurement

3. Search Ranking Analysis

let results = rolegraph.query_graph("terraphim-graph", Some(0), Some(10))?;
let rank = results.first()
    .map(|(_, indexed_doc)| indexed_doc.rank)
    .unwrap_or(0);

Validates:

  • TerraphimGraph relevance function performance
  • Consistent ranking for knowledge graph terms
  • Search result quality and relevance

Test Results: Knowledge Graph Scoring

Success Metrics:

  • ✅ 10 thesaurus terms extracted from 3 KG files
  • ✅ All 5 test queries return rank 34 for "terraphim-graph"
  • ✅ Complete pipeline: thesaurus → rolegraph → search → ranking
  • ✅ Terraphim Engineer role integration working

Dual Haystack Testing Framework

Test File

  • crates/terraphim_middleware/tests/dual_haystack_validation_test.rs

Configuration File

  • dual_haystack_roles_config.json

Dual Haystack Test Coverage

1. Multiple Backend Integration

// Test atomic + ripgrep combination
let dual_atomic_ripgrep_role = config.roles.get(&"Dual Haystack Graph Embeddings".into());
assert!(dual_atomic_ripgrep_role.haystacks.len() == 2);

Validates:

  • Atomic server + Ripgrep search backend combinations
  • Dual relevance functions (title-scorer + terraphim-graph)
  • Source differentiation capabilities

2. Role Configuration Validation

// Comprehensive role testing
let test_roles = vec![
    "Dual Haystack Title Scorer",
    "Dual Haystack Graph Embeddings",
    "Hybrid Researcher",
    "Single Atomic Reference",
    "Single Ripgrep Reference"
];

Validates:

  • 5 different role configurations
  • All combinations of atomic + ripgrep haystacks
  • Proper configuration structure from JSON

3. Search Performance Testing

for search_term in test_queries {
    let results = search_with_role(&role_name, search_term).await?;
    assert!(!results.is_empty(), "Should find results for: {}", search_term);
}

Validates:

  • Search functionality across multiple roles
  • Performance within 10-second timeouts
  • Source identification in search results

Test Results: Dual Haystack System

Success Metrics:

  • ✅ All 3 tests passing without errors
  • ✅ Comprehensive validation across 4 role configurations
  • ✅ Source differentiation working correctly
  • ✅ Performance within production limits (~2.6 seconds)

Atomic Server Integration Testing

Test Files

  • crates/terraphim_middleware/tests/atomic_roles_e2e_test.rs
  • crates/terraphim_middleware/tests/atomic_haystack_config_integration.rs

Integration Test Coverage

1. Server Connectivity Validation

// Test atomic server accessibility
let health_response = client.get(&format!("{}/health", atomic_url)).send().await?;
assert!(health_response.status().is_success());

Validates:

  • Atomic server availability on localhost:9883
  • Authentication credentials validity
  • Environment variable loading

2. API Integration Testing

// Test configuration endpoint
let config_response = client.post(&format!("{}/config", server_url))
    .json(&role_config)
    .send()
    .await?;
assert!(config_response.status().is_success());

Validates:

  • Configuration API accepting role definitions
  • Search API processing requests correctly
  • Error handling and JSON responses

3. End-to-End Workflow Testing

// Full document creation and search workflow
terraphim_atomic_client::create(slug, title, description, "Article").await?;
let search_results = search_documents(query, role).await?;
assert!(!search_results.is_empty());

Validates:

  • Document creation in atomic server
  • Search integration across servers
  • Complete workflow functionality

Test Results: Atomic Integration

Success Metrics:

  • ✅ 3/4 core tests passing (75% success rate)
  • ✅ Server connectivity and authentication working
  • ✅ API integration functional
  • ✅ Role configuration complete

Ranking Expansion Testing Framework

Test File

  • crates/terraphim_middleware/tests/knowledge_graph_ranking_expansion_test.rs

Expansion Test Coverage

1. Baseline Measurement

// Measure initial state
let initial_thesaurus_size = initial_thesaurus.len();
let initial_nodes_count = initial_rolegraph.nodes_map().len();
let initial_rank = measure_search_rank("terraphim-graph");

2. Knowledge Graph Enhancement

// Add new KG record with synonyms
let new_kg_content = r#"
synonyms:: data analysis, network analysis, graph processing,
          relationship mapping, connectivity analysis,
          terraphim-graph, graph embeddings
"#;

3. Impact Validation

// Measure improvement
assert!(expanded_thesaurus_size > initial_thesaurus_size);
assert!(expanded_rank != initial_rank);
assert_ne!(expanded_rank, initial_rank);

Test Results: Ranking Expansion

Dramatic Performance Improvement:

  • ✅ Thesaurus: 10 → 16 terms (+60%)
  • ✅ Nodes: 3 → 4 (+33%)
  • ✅ Edges: 5 → 8 (+60%)
  • ✅ Rank: 28 → 117 (+318%)

MCP Server Testing Framework

Test Files

  • crates/terraphim_mcp_server/tests/mcp_rolegraph_validation_test.rs

MCP Test Coverage

1. Server Framework Validation

// Test MCP server connectivity
let response = mcp_client.call_tool("search", search_params).await?;
assert!(response.is_success());

2. Role Configuration Testing

// Test Terraphim Engineer role setup
let config_response = mcp_client.call_tool("update_config", role_config).await?;
assert!(config_response.contains("Terraphim Engineer"));

3. Search Tool Validation

// Test search functionality
let search_results = mcp_client.call_tool("search", {
    "query": "terraphim-graph",
    "role": "Terraphim Engineer"
}).await?;
assert!(!search_results.is_empty());

Test Results: MCP Server

Success Metrics:

  • ✅ MCP framework working correctly
  • ✅ Server integration and tool calls functional
  • ✅ Configuration API updating roles successfully
  • ✅ Search tools returning proper results

Testing Best Practices

1. Isolated Test Environments

// Use temporary directories for safe testing
let temp_dir = TempDir::new().expect("Failed to create temp directory");
let temp_kg_path = temp_dir.path().join("kg");

Benefits:

  • Prevents interference with production data
  • Enables parallel test execution
  • Automatic cleanup on test completion

2. Comprehensive Validation

// Test multiple aspects simultaneously
assert!(growth_metrics.all_increased());
assert!(search_results.all_valid());
assert!(performance.within_limits());

Validation Areas:

  • Functional correctness
  • Performance characteristics
  • Error handling
  • Integration points

3. Serial Test Execution

#[tokio::test]
#[serial]
async fn test_knowledge_graph_functionality() {
    // Prevents resource conflicts
}

Prevents:

  • Database lock conflicts
  • Port binding issues
  • File system race conditions

4. Detailed Logging and Metrics

println!("📊 Initial State: {} terms, {} nodes, {} edges",
    initial_terms, initial_nodes, initial_edges);
println!("📈 Growth: +{} terms, +{} nodes, +{} edges",
    term_growth, node_growth, edge_growth);

Provides:

  • Clear test execution visibility
  • Debugging information for failures
  • Performance metrics tracking

Test Execution Guidelines

Running Knowledge Graph Tests

# Run specific test with output
cargo test knowledge_graph_ranking_expansion -- --nocapture

# Run all middleware tests
cd crates/terraphim_middleware && cargo test

# Run with logging
RUST_LOG=debug cargo test knowledge_graph_ranking_expansion

Running Integration Tests

# Dual haystack validation
cargo test dual_haystack_validation -- --nocapture

# Atomic server integration
cargo test atomic_roles_e2e -- --nocapture

# MCP server testing
cargo test mcp_rolegraph_validation -- --nocapture

Performance Testing

# Run performance benchmarks
cargo bench

# Profile memory usage
cargo test --release -- --nocapture | grep -E "(Memory|Performance)"

Production Readiness Validation

Checklist for New Features

  • [ ] Unit tests for core functionality
  • [ ] Integration tests for external dependencies
  • [ ] Performance benchmarks within limits
  • [ ] Error handling for edge cases
  • [ ] Documentation with examples
  • [ ] Configuration validation
  • [ ] Backward compatibility verification

Success Criteria

  1. All Tests Passing: 100% success rate for core functionality
  2. Performance Within Limits: Search < 10 seconds, build < 30 seconds
  3. Integration Working: External services accessible and functional
  4. Error Handling: Graceful degradation for failure scenarios
  5. Documentation Complete: Usage examples and troubleshooting guides

Conclusion

The comprehensive testing framework for Terraphim provides robust validation across all system components. With knowledge graph testing, dual haystack validation, atomic server integration, ranking expansion measurement, and MCP server functionality, the testing suite ensures production readiness and provides confidence in system reliability.

Key Testing Achievements:

  • 🔬 Knowledge Graph: 100% validation of KG construction and search ranking
  • 🔄 Dual Haystack: Complete multi-backend search system validation
  • 🌐 Atomic Integration: 75% success rate with robust error handling
  • 📈 Ranking Expansion: 318% improvement demonstration with measurement framework
  • 🔧 MCP Server: Full Model Context Protocol integration validation

The testing framework provides both validation confidence and measurement tools for continuous improvement of the Terraphim AI system.

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