add unit test for additionalCommands

Author: navin772

java/test/org/openqa/selenium/remote/RemoteWebDriverInitializationTest.java

@@ -51,6 +51,7 @@
 import org.openqa.selenium.remote.http.ClientConfig;
 import org.openqa.selenium.remote.http.Contents;
 import org.openqa.selenium.remote.http.HttpClient;
+import org.openqa.selenium.remote.http.HttpMethod;
 import org.openqa.selenium.remote.http.HttpResponse;
 
 @Tag("UnitTests")
@@ -234,4 +235,22 @@ public void quit() {
       quitCalled = true;
     }
   }
+
+  @Test
+  void additionalCommandsCanBeModified() throws MalformedURLException {
+    HttpClient client = mock(HttpClient.class);
+    HttpClient.Factory factory = mock(HttpClient.Factory.class);
+
+    when(factory.createClient(any(ClientConfig.class))).thenReturn(client);
+
+    URL url = new URL("http://localhost:4444/");
+    HttpCommandExecutor executor =
+        new HttpCommandExecutor(emptyMap(), ClientConfig.defaultConfig().baseUrl(url), factory);
+
+    String commandName = "customCommand";
+    CommandInfo commandInfo = new CommandInfo("/session/:sessionId/custom", HttpMethod.GET);
+    executor.addAdditionalCommand(commandName, commandInfo);
+
+    assertThat(executor.getAdditionalCommands()).containsEntry(commandName, commandInfo);
+  }
 }