test: http2 client settings invalid callback

PR-URL: #18850
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

test/parallel/test-http2-client-settings-before-connect.js

@@ -35,13 +35,26 @@ server.listen(0, common.mustCall(() => {
     ['enablePush', 0, TypeError],
     ['enablePush', null, TypeError],
     ['enablePush', {}, TypeError]
-  ].forEach((i) => {
+  ].forEach(([name, value, errorType]) =>
     common.expectsError(
-      () => client.settings({ [i[0]]: i[1] }),
+      () => client.settings({ [name]: value }),
       {
         code: 'ERR_HTTP2_INVALID_SETTING_VALUE',
-        type: i[2] });
-  });
+        type: errorType
+      }
+    )
+  );
+
+  [1, true, {}, []].forEach((invalidCallback) =>
+    common.expectsError(
+      () => client.settings({}, invalidCallback),
+      {
+        type: TypeError,
+        code: 'ERR_INVALID_CALLBACK',
+        message: 'callback must be a function'
+      }
+    )
+  );
 
   client.settings({ maxFrameSize: 1234567 });