Initial commit

skills/databases/scripts/tests/test_db_migrate.py

@@ -0,0 +1,277 @@
+"""Tests for db_migrate.py"""
+
+import json
+import os
+import sys
+from datetime import datetime
+from pathlib import Path
+from unittest.mock import Mock, patch, MagicMock
+
+import pytest
+
+# Add parent directory to path
+sys.path.insert(0, str(Path(__file__).parent.parent))
+
+from db_migrate import Migration, MigrationManager
+
+
+@pytest.fixture
+def temp_migrations_dir(tmp_path):
+    """Create temporary migrations directory."""
+    migrations_dir = tmp_path / "migrations"
+    migrations_dir.mkdir()
+    return str(migrations_dir)
+
+
+@pytest.fixture
+def mock_mongo_client():
+    """Mock MongoDB client."""
+    mock_client = MagicMock()
+    mock_db = MagicMock()
+    mock_client.get_default_database.return_value = mock_db
+    mock_client.server_info.return_value = {}
+    return mock_client, mock_db
+
+
+@pytest.fixture
+def mock_postgres_conn():
+    """Mock PostgreSQL connection."""
+    mock_conn = MagicMock()
+    mock_cursor = MagicMock()
+    mock_conn.cursor.return_value.__enter__.return_value = mock_cursor
+    return mock_conn, mock_cursor
+
+
+class TestMigration:
+    """Test Migration dataclass."""
+
+    def test_migration_creation(self):
+        """Test creating migration object."""
+        migration = Migration(
+            id="20250101120000",
+            name="test_migration",
+            timestamp=datetime.now(),
+            database_type="mongodb"
+        )
+
+        assert migration.id == "20250101120000"
+        assert migration.name == "test_migration"
+        assert migration.database_type == "mongodb"
+        assert not migration.applied
+
+
+class TestMigrationManager:
+    """Test MigrationManager class."""
+
+    def test_init(self, temp_migrations_dir):
+        """Test manager initialization."""
+        manager = MigrationManager("mongodb", "mongodb://localhost", temp_migrations_dir)
+
+        assert manager.db_type == "mongodb"
+        assert manager.connection_string == "mongodb://localhost"
+        assert Path(temp_migrations_dir).exists()
+
+    @patch('db_migrate.MongoClient')
+    def test_connect_mongodb(self, mock_client_class, temp_migrations_dir, mock_mongo_client):
+        """Test MongoDB connection."""
+        mock_client, mock_db = mock_mongo_client
+        mock_client_class.return_value = mock_client
+
+        manager = MigrationManager("mongodb", "mongodb://localhost", temp_migrations_dir)
+        result = manager.connect()
+
+        assert result is True
+        assert manager.client == mock_client
+        assert manager.db == mock_db
+
+    @patch('db_migrate.psycopg2')
+    def test_connect_postgres(self, mock_psycopg2, temp_migrations_dir, mock_postgres_conn):
+        """Test PostgreSQL connection."""
+        mock_conn, mock_cursor = mock_postgres_conn
+        mock_psycopg2.connect.return_value = mock_conn
+
+        manager = MigrationManager("postgres", "postgresql://localhost", temp_migrations_dir)
+        result = manager.connect()
+
+        assert result is True
+        assert manager.conn == mock_conn
+
+    def test_connect_unsupported_db(self, temp_migrations_dir):
+        """Test connection with unsupported database type."""
+        manager = MigrationManager("unsupported", "connection_string", temp_migrations_dir)
+        result = manager.connect()
+
+        assert result is False
+
+    def test_generate_migration(self, temp_migrations_dir):
+        """Test migration generation."""
+        manager = MigrationManager("mongodb", "mongodb://localhost", temp_migrations_dir)
+        migration = manager.generate_migration("test_migration")
+
+        assert migration is not None
+        assert migration.name == "test_migration"
+
+        # Check file was created
+        migration_files = list(Path(temp_migrations_dir).glob("*.json"))
+        assert len(migration_files) == 1
+
+        # Check file content
+        with open(migration_files[0]) as f:
+            data = json.load(f)
+            assert data["name"] == "test_migration"
+            assert data["database_type"] == "mongodb"
+
+    def test_generate_migration_dry_run(self, temp_migrations_dir):
+        """Test migration generation in dry-run mode."""
+        manager = MigrationManager("postgres", "postgresql://localhost", temp_migrations_dir)
+        migration = manager.generate_migration("test_migration", dry_run=True)
+
+        assert migration is not None
+
+        # Check no file was created
+        migration_files = list(Path(temp_migrations_dir).glob("*.json"))
+        assert len(migration_files) == 0
+
+    def test_get_pending_migrations(self, temp_migrations_dir):
+        """Test getting pending migrations."""
+        manager = MigrationManager("mongodb", "mongodb://localhost", temp_migrations_dir)
+
+        # Create test migration file
+        migration_data = {
+            "id": "20250101120000",
+            "name": "test_migration",
+            "timestamp": datetime.now().isoformat(),
+            "database_type": "mongodb",
+            "mongodb_operations": []
+        }
+
+        migration_file = Path(temp_migrations_dir) / "20250101120000_test.json"
+        with open(migration_file, "w") as f:
+            json.dump(migration_data, f)
+
+        # Mock database connection
+        with patch.object(manager, 'db', MagicMock()):
+            manager.db.migrations.find.return_value = []
+
+            pending = manager.get_pending_migrations()
+
+            assert len(pending) == 1
+            assert pending[0].id == "20250101120000"
+            assert pending[0].name == "test_migration"
+
+    @patch('db_migrate.MongoClient')
+    def test_apply_mongodb_migration(self, mock_client_class, temp_migrations_dir, mock_mongo_client):
+        """Test applying MongoDB migration."""
+        mock_client, mock_db = mock_mongo_client
+        mock_client_class.return_value = mock_client
+
+        manager = MigrationManager("mongodb", "mongodb://localhost", temp_migrations_dir)
+        manager.connect()
+
+        migration = Migration(
+            id="20250101120000",
+            name="test_migration",
+            timestamp=datetime.now(),
+            database_type="mongodb",
+            mongodb_operations=[
+                {
+                    "operation": "createIndex",
+                    "collection": "users",
+                    "index": {"email": 1},
+                    "options": {}
+                }
+            ]
+        )
+
+        result = manager.apply_migration(migration)
+
+        assert result is True
+        mock_db["users"].create_index.assert_called_once()
+        mock_db.migrations.insert_one.assert_called_once()
+
+    def test_apply_migration_dry_run(self, temp_migrations_dir):
+        """Test applying migration in dry-run mode."""
+        manager = MigrationManager("mongodb", "mongodb://localhost", temp_migrations_dir)
+
+        migration = Migration(
+            id="20250101120000",
+            name="test_migration",
+            timestamp=datetime.now(),
+            database_type="mongodb",
+            mongodb_operations=[]
+        )
+
+        result = manager.apply_migration(migration, dry_run=True)
+
+        assert result is True
+
+    @patch('db_migrate.psycopg2')
+    def test_rollback_postgres_migration(self, mock_psycopg2, temp_migrations_dir, mock_postgres_conn):
+        """Test rolling back PostgreSQL migration."""
+        mock_conn, mock_cursor = mock_postgres_conn
+        mock_psycopg2.connect.return_value = mock_conn
+
+        manager = MigrationManager("postgres", "postgresql://localhost", temp_migrations_dir)
+        manager.connect()
+
+        # Create migration file
+        migration_data = {
+            "id": "20250101120000",
+            "name": "test_migration",
+            "timestamp": datetime.now().isoformat(),
+            "database_type": "postgres",
+            "up_sql": "CREATE TABLE test (id INT);",
+            "down_sql": "DROP TABLE test;"
+        }
+
+        migration_file = Path(temp_migrations_dir) / "20250101120000_test.json"
+        with open(migration_file, "w") as f:
+            json.dump(migration_data, f)
+
+        result = manager.rollback_migration("20250101120000")
+
+        assert result is True
+        # Verify SQL was executed
+        assert mock_cursor.execute.call_count >= 1
+
+    def test_rollback_migration_not_found(self, temp_migrations_dir):
+        """Test rollback with non-existent migration."""
+        manager = MigrationManager("mongodb", "mongodb://localhost", temp_migrations_dir)
+
+        result = manager.rollback_migration("99999999999999")
+
+        assert result is False
+
+
+def test_migration_sorting(temp_migrations_dir):
+    """Test that migrations are applied in correct order."""
+    manager = MigrationManager("mongodb", "mongodb://localhost", temp_migrations_dir)
+
+    # Create multiple migration files
+    for i in range(3):
+        migration_data = {
+            "id": f"2025010112000{i}",
+            "name": f"migration_{i}",
+            "timestamp": datetime.now().isoformat(),
+            "database_type": "mongodb",
+            "mongodb_operations": []
+        }
+
+        migration_file = Path(temp_migrations_dir) / f"2025010112000{i}_test.json"
+        with open(migration_file, "w") as f:
+            json.dump(migration_data, f)
+
+    with patch.object(manager, 'db', MagicMock()):
+        manager.db.migrations.find.return_value = []
+
+        pending = manager.get_pending_migrations()
+
+        # Check they're in order
+        assert len(pending) == 3
+        assert pending[0].id == "20250101120000"
+        assert pending[1].id == "20250101120001"
+        assert pending[2].id == "20250101120002"
+
+
+if __name__ == "__main__":
+    pytest.main([__file__, "-v"])