fix: chat.update allows to set message as empty string

.changeset/nervous-maps-greet.md

@@ -0,0 +1,6 @@
+---
+"@rocket.chat/meteor": patch
+"@rocket.chat/rest-typings": patch
+---
+
+Fixes `chat.update` endpoint, which allowed to update a message with an empty text. Now, the API will properly validate the message to contain at least one character.

apps/meteor/tests/end-to-end/api/chat.ts

@@ -1681,6 +1681,22 @@ describe('[Chat]', () => {
 				});
 		});
 
+		it('should fail if text is an empty string', async () => {
+			await request
+				.post(api('chat.update'))
+				.set(credentials)
+				.send({
+					roomId: testChannel._id,
+					msgId: message._id,
+					text: '',
+				})
+				.expect('Content-Type', 'application/json')
+				.expect(400)
+				.expect((res) => {
+					expect(res.body).to.have.property('success', false);
+				});
+		});
+
 		it('should update a message successfully', (done) => {
 			void request
 				.post(api('chat.update'))

packages/rest-typings/src/v1/chat.ts

@@ -479,6 +479,7 @@ const ChatUpdateSchema = {
 		},
 		text: {
 			type: 'string',
+			minLength: 1,
 		},
 		previewUrls: {
 			type: 'array',