test: wrap missing common.mustCall

PR-URL: #45064
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Robert Nagy <ronagy@icloud.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Erick Wendel <erick.workspace@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

test/parallel/test-stream-promises.js

@@ -119,27 +119,30 @@ assert.strictEqual(finished, promisify(stream.finished));
 {
   const streamObj = new Writable();
   assert.strictEqual(streamObj.listenerCount('end'), 0);
-  finished(streamObj, { cleanup: false }).then(() => {
+  finished(streamObj, { cleanup: false }).then(common.mustCall(() => {
     assert.strictEqual(streamObj.listenerCount('end'), 1);
-  });
+  }));
+  streamObj.end();
 }
 
 // Cleanup function should be called when cleanup is set to true
 // listenerCount should be 0 after calling finish
 {
   const streamObj = new Writable();
   assert.strictEqual(streamObj.listenerCount('end'), 0);
-  finished(streamObj, { cleanup: true }).then(() => {
+  finished(streamObj, { cleanup: true }).then(common.mustCall(() => {
     assert.strictEqual(streamObj.listenerCount('end'), 0);
-  });
+  }));
+  streamObj.end();
 }
 
 // Cleanup function should not be called when cleanup has not been set
 // listenerCount should be 1 after calling finish
 {
   const streamObj = new Writable();
   assert.strictEqual(streamObj.listenerCount('end'), 0);
-  finished(streamObj).then(() => {
+  finished(streamObj).then(common.mustCall(() => {
     assert.strictEqual(streamObj.listenerCount('end'), 1);
-  });
+  }));
+  streamObj.end();
 }