test: increase Http2ServerResponse test coverage

Modify existing header tests for Http2ServerResponse to include
sendDate (get and set) and headersSent. Expand existing test
for end to include a check for closed. Add a new test for destroy.

PR-URL: https://github.com/nodejs/node/pull/15074
Refs: https://github.com/nodejs/node/issues/14985
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/test/parallel/test-http2-compat-serverresponse-end.js b/test/parallel/test-http2-compat-serverresponse-end.js
index 5fb93e93dd..6c07f6d83e 100644
--- a/test/parallel/test-http2-compat-serverresponse-end.js
+++ b/test/parallel/test-http2-compat-serverresponse-end.js
@@ -18,10 +18,12 @@ const {
   // Http2ServerResponse.end callback is called only the first time,
   // but may be invoked repeatedly without throwing errors.
   const server = createServer(mustCall((request, response) => {
+    strictEqual(response.closed, false);
     response.end(mustCall(() => {
       server.close();
     }));
     response.end(mustNotCall());
+    strictEqual(response.closed, true);
   }));
   server.listen(0, mustCall(() => {
     const { port } = server.address();