test: http2 compat response.write() error checks

test/parallel/test-http2-compat-serverresponse-write.js

@@ -0,0 +1,52 @@
+'use strict';
+
+const {
+  mustCall,
+  mustNotCall,
+  expectsError,
+  hasCrypto,
+  skip
+} = require('../common');
+if (!hasCrypto)
+  skip('missing crypto');
+const { createServer, connect } = require('http2');
+const assert = require('assert');
+
+const server = createServer();
+server.listen(0, mustCall(() => {
+  const port = server.address().port;
+  const url = `http://localhost:${port}`;
+  const client = connect(url, mustCall(() => {
+    const request = client.request();
+    request.resume();
+    request.on('end', mustCall());
+    request.on('close', mustCall(() => {
+      client.close();
+    }));
+  }));
+
+  server.once('request', mustCall((request, response) => {
+    // response.write() returns true
+    assert(response.write('muahaha', 'utf8', mustCall()));
+
+    response.stream.close(0, mustCall(() => {
+      response.on('error', mustNotCall());
+
+      // response.write() without cb returns error
+      expectsError(
+        () => { response.write('muahaha'); },
+        {
+          type: Error,
+          code: 'ERR_HTTP2_INVALID_STREAM',
+          message: 'The stream has been destroyed'
+        }
+      );
+
+      // response.write() with cb returns falsy value
+      assert(!response.write('muahaha', mustCall()));
+
+      client.destroy();
+      server.close();
+    }));
+  }));
+}));