Protocol Testing and Compliance Verification

Compliance Testing Importance

Protocol compliance ensures interoperability between ECM implementations. This guide covers testing strategies for verifying compliance.

Test Categories

Wire Protocol Tests

Verify message format compliance:

describe('ECM Message Format', () => {
  it('should include required envelope fields', () => {
    const message = serialize(context);
    const parsed = JSON.parse(message);
    
    expect(parsed.ecm_version).toBeDefined();
    expect(parsed.message_id).toMatch(UUID_REGEX);
    expect(parsed.timestamp).toMatch(ISO8601_REGEX);
    expect(parsed.payload).toBeDefined();
  });
  
  it('should serialize dates as ISO-8601', () => {
    const context = { created_at: new Date() };
    const message = serialize(context);
    
    expect(message).toContain('T');
    expect(message).toContain('Z');
  });
});

Semantic Tests

Verify operation semantics:

describe('Context Operations', () => {
  it('should return null for non-existent context', async () => {
    const result = await store.get('non-existent-id');
    expect(result).toBeNull();
  });
  
  it('should detect concurrent modification', async () => {
    const ctx = await store.put({ data: 'v1' });
    await store.update(ctx.id, { data: 'v2' }, ctx.etag);
    
    await expect(
      store.update(ctx.id, { data: 'v3' }, ctx.etag)
    ).rejects.toThrow(ConcurrencyError);
  });
});

Interoperability Testing

Cross-Implementation Tests

const implementations = [
  { name: 'Reference', client: referenceClient },
  { name: 'TypeScript', client: tsClient },
  { name: 'Python', client: pyClient }
];

implementations.forEach(impl => {
  describe(\`\${impl.name} implementation\`, () => {
    it('should roundtrip context through reference store', async () => {
      const original = generateTestContext();
      const ref = await referenceStore.put(original);
      const retrieved = await impl.client.get(ref.id);
      
      expect(retrieved.data).toEqual(original.data);
    });
  });
});

Property-Based Testing

Invariant Verification

import { fc } from 'fast-check';

describe('Store Invariants', () => {
  it('get after put returns equivalent context', () => {
    fc.assert(
      fc.asyncProperty(contextArbitrary, async (context) => {
        const ref = await store.put(context);
        const retrieved = await store.get(ref.id);
        return deepEqual(context.data, retrieved.data);
      })
    );
  });
  
  it('version increases monotonically', () => {
    fc.assert(
      fc.asyncProperty(fc.array(contextArbitrary), async (updates) => {
        const ref = await store.put(updates[0]);
        let lastVersion = ref.version;
        
        for (const update of updates.slice(1)) {
          const newRef = await store.update(ref.id, update);
          if (newRef.version <= lastVersion) return false;
          lastVersion = newRef.version;
        }
        return true;
      })
    );
  });
});

Performance Benchmarks

Benchmark Suite

const benchmarks = {
  'put_single': async () => await store.put(singleContext),
  'get_single': async () => await store.get(existingId),
  'query_simple': async () => await store.query(simpleFilter),
  'query_complex': async () => await store.query(complexFilter)
};

async function runBenchmarks() {
  for (const [name, fn] of Object.entries(benchmarks)) {
    const times = [];
    for (let i = 0; i < 1000; i++) {
      const start = performance.now();
      await fn();
      times.push(performance.now() - start);
    }
    console.log(\`\${name}: p50=\${percentile(times, 50)}ms, p99=\${percentile(times, 99)}ms\`);
  }
}

Compliance Certification

Certification process:

Test suite execution: Run full compliance suite
Result submission: Submit test results
Review: Protocol committee reviews
Certification: Issued on passing

Conclusion

Comprehensive testing ensures ECM Protocol compliance and interoperability. Implement wire protocol tests, semantic tests, and property-based tests for thorough verification.

> Protocol Testing and Compliance Verification