From 5854c3928accb14c3ec84de4726936514bf50b94 Mon Sep 17 00:00:00 2001
From: matt <matt@fiddaman.net>
Date: Thu, 20 Jan 2022 17:03:37 +0000
Subject: [PATCH] Added tests for DatabaseConnectionPool class

---
 lib/DatabaseConnectionPool.test.js | 46 ++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 lib/DatabaseConnectionPool.test.js

diff --git a/lib/DatabaseConnectionPool.test.js b/lib/DatabaseConnectionPool.test.js
new file mode 100644
index 0000000..99ff0aa
--- /dev/null
+++ b/lib/DatabaseConnectionPool.test.js
@@ -0,0 +1,46 @@
+'use strict';
+
+const DatabaseConnectionPool = require('./DatabaseConnectionPool');
+
+jest.mock('./DatabaseConnectionPool');
+
+describe('DatabaseConnectionPool', () => {
+	test('Should instantiate connection', () => {
+		new DatabaseConnectionPool();
+
+		expect(DatabaseConnectionPool).toHaveBeenCalledTimes(1);
+	});
+
+	test('Non prepared query should not execute with params', () => {
+		const dbp = new DatabaseConnectionPool();
+
+		const sql = `SELECT * FROM class;`;
+		dbp.runQuery(sql);
+
+		expect(dbp.runQuery.mock.results[0].value).toEqual({
+			sql: sql
+		});
+	});
+
+	test('Prepared query should execute along with params', () => {
+		const dbp = new DatabaseConnectionPool();
+
+		const sql = `SELECT * FROM class where name = ?;`;
+		const params = [ 'bob' ];
+		dbp.runQuery(sql, params);
+
+		expect(dbp.runQuery.mock.results[0].value).toEqual({
+			sql: sql,
+			params: params
+		});
+	});
+
+	test('Query without trailing ; should throw error', () => {
+		const dbp = new DatabaseConnectionPool();
+
+		const sql = `SELECT * FROM class where name = ?`;
+		const params = [ 'bob' ];
+
+		expect(() => dbp.runQuery(sql, params)).toThrow();
+	});
+});