From 7f72488cca35bde74b35a89099292a8467cd8565 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?David=20Garc=C3=ADa?= <davidgf1987@gmail.com>
Date: Fri, 5 Apr 2024 15:32:07 +0200
Subject: [PATCH] fix: return empty string when send was called with undefined

---
 lib/mockResponse.js           | 2 +-
 test/lib/mockResponse.spec.js | 5 +++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/mockResponse.js b/lib/mockResponse.js
index f847dd9..9a0c99b 100644
--- a/lib/mockResponse.js
+++ b/lib/mockResponse.js
@@ -165,7 +165,7 @@ function createResponse(options = {}) {
                     _data = data;
                 }
             } else {
-                _data += data;
+                _data += data || '';
             }
         };
 
diff --git a/test/lib/mockResponse.spec.js b/test/lib/mockResponse.spec.js
index a268738..0e78d5d 100644
--- a/test/lib/mockResponse.spec.js
+++ b/test/lib/mockResponse.spec.js
@@ -1364,6 +1364,11 @@ describe('mockResponse', () => {
                 expect(response._getData()).to.equal('');
             });
 
+            it('should return empty string when sent data is undefined', () => {
+                response.send(undefined);
+                expect(response._getData()).to.equal('');
+            });
+
             it('should return sent data', () => {
                 response.send('data');
                 expect(response._getData()).to.equal('data');