test: increase coverage for _http_incoming.js

Add coverage for IncomingMessage.prototype.connection setter.

PR-URL: #31093
Reviewed-By: Ruben Bridgewater <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Yongsheng Zhang <[email protected]>
Reviewed-By: David Carlier <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Reviewed-By: Trivikram Kamat <[email protected]>
Reviewed-By: Anto Aravinth <[email protected]>

test/parallel/test-http-incoming-message-connection-setter.js

@@ -0,0 +1,18 @@
+'use strict';
+
+// Test that the setter for http.IncomingMessage,prototype.connection sets the
+// socket property too.
+require('../common');
+
+const assert = require('assert');
+const http = require('http');
+
+const incomingMessage = new http.IncomingMessage();
+
+assert.strictEqual(incomingMessage.connection, undefined);
+assert.strictEqual(incomingMessage.socket, undefined);
+
+incomingMessage.connection = 'fhqwhgads';
+
+assert.strictEqual(incomingMessage.connection, 'fhqwhgads');
+assert.strictEqual(incomingMessage.socket, 'fhqwhgads');