Added method to expose the mysql2 database connection

lib/DatabaseConnectionPool.js

@@ -91,6 +91,14 @@ class DatabaseConnectionPool {
 		return data;
 	}
 
+	/**
+	 * Expose the database connection pool
+	 * @type {Object}
+	 */
+	get pool() {
+		return this.#connectionPool;
+	}
+
 	/**
 	 * Close the connection to the database
 	 */

lib/__mocks__/DatabaseConnectionPool.js

@@ -55,7 +55,8 @@ jest.mock('./DatabaseConnectionPool', () => {
 	return jest.fn().mockImplementation(() => {
 		return {
 			runQuery: mockRunQuery,
-			close: mockClose
+			close: mockClose,
+			pool: true
 		};
 	});
 });

lib/__tests__/DatabaseConnectionPool.test.js

@@ -89,4 +89,10 @@ describe('DatabaseConnectionPool', () => {
 
 		expect(() => dbp.runQuery(sql, params)).toThrow();
 	});
+
+	test('Getter for pool exists', () => {
+		const dbp = new DatabaseConnectionPool();
+
+		expect(dbp.pool).toBeTrue();
+	});
 });

writeup/diagrams/DatabaseConnectionPool.puml

@@ -6,6 +6,7 @@ class DatabaseConnectionPool {
 	-connectionPool: Object
 	runQuery(sql, params): Object[] | Object
 	close(): void
+	getPool(): Object
 	{static} validateQuery(sql, params): string
 }