ObjectQL Driver TCK (Technology Compatibility Kit)

A comprehensive test suite to ensure all ObjectQL drivers implement consistent behavior.

Purpose

The Driver TCK provides a standardized set of tests that all ObjectQL drivers must pass. This ensures:

• Consistency: All drivers behave the same way for core operations
• Compatibility: Applications can switch drivers without code changes
• Quality: Drivers are thoroughly tested against a known specification

Usage

With Jest

import { runDriverTCK } from '@objectql/driver-tck';
import { MyDriver } from './my-driver';

describe('MyDriver TCK', () => {
  runDriverTCK(() => new MyDriver({
    // driver config
  }), {
    skip: {
      // Skip tests for unsupported features
      aggregations: true,
      transactions: true
    },
    timeout: 30000
  });
});

With Vitest

import { describe } from 'vitest';
import { runDriverTCK } from '@objectql/driver-tck';
import { MyDriver } from './my-driver';

describe('MyDriver TCK', () => {
  runDriverTCK(() => new MyDriver(), {
    timeout: 30000
  });
});

Test Categories

1. Core CRUD Operations

• Create records
• Read records (findOne)
• Update records
• Delete records
• Custom IDs
• Timestamps

2. Query Operations

• Find all records
• Filter by equality, comparison operators
• Boolean filters
• Sorting (ascending/descending)
• Pagination (limit/offset)
• Combined filters + sort + pagination
• Count with and without filters

3. Distinct Operations (optional)

• Get distinct values for a field
• Distinct with filters

4. Aggregation Operations (optional)

• Group by with count
• Average, min, max
• Complex aggregation pipelines

5. Bulk Operations (optional)

• Bulk create
• Bulk update
• Bulk delete

6. Edge Cases

• Empty queries
• Null/undefined values
• Special characters
• Type conversions

Configuration

Skip Options

Use the skip configuration to disable tests for features your driver doesn't support:

{
  skip: {
    transactions: true,      // Skip transaction tests
    joins: true,            // Skip join tests
    fullTextSearch: true,   // Skip full-text search tests
    aggregations: true,     // Skip aggregation tests
    distinct: true,         // Skip distinct tests
    bulkOperations: true    // Skip bulk operation tests
  }
}

Timeout

Set custom timeout for long-running operations:

{
  timeout: 60000 // 60 seconds
}

Hooks

Provide custom setup/teardown logic:

{
  hooks: {
    beforeAll: async () => {
      // Setup database connection
    },
    afterAll: async () => {
      // Cleanup
    },
    beforeEach: async () => {
      // Clear test data
    },
    afterEach: async () => {
      // Post-test cleanup
    }
  }
}

Driver Requirements

To pass the TCK, your driver must implement:

Required Methods

• create(objectName, data) - Create a record
• findOne(objectName, id) - Find by ID
• find(objectName, query) - Query records
• update(objectName, id, data) - Update a record
• delete(objectName, id) - Delete a record
• count(objectName, filters) - Count records

Optional Methods

• distinct(objectName, field, filters) - Get distinct values
• aggregate(objectName, pipeline) - Aggregation pipeline
• executeCommand(command) - Bulk operations
• connect() - Initialize connection
• disconnect() - Close connection
• clear() - Clear all data (for testing)

Expected Behavior

1. Auto-generated IDs: If no ID is provided, generate a unique one
2. Timestamps: Automatically add created_at and updated_at
3. Null Safety: Return null for non-existent records
4. QueryAST Support: Support the standard query format

License

MIT