[CALCITE-6280] Implemented review comment - Moved the test to another…

… class.

Change-Id: I1e0f1092a91e6a23a0f1c7eea92874553285ef0b

server/src/test/java/org/apache/calcite/avatica/server/HttpServerSpnegoWithoutJaasTest.java

@@ -56,6 +56,7 @@
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertTrue;
 
 /**
@@ -186,6 +187,14 @@ private static void setupUsers(File keytabDir) throws KrbException {
     assertEquals(401, conn.getResponseCode());
   }
 
+  @Test public void testServerVersionNotReturnedForUnauthorisedAccess() throws Exception {
+    LOG.info("Connecting to {}", httpServerUrl.toString());
+    HttpURLConnection conn = (HttpURLConnection) httpServerUrl.openConnection();
+    conn.setRequestMethod("GET");
+    assertEquals("Unauthorized response status code", 401,conn.getResponseCode());
+    assertNull("Server information was not expected", conn.getHeaderField("server"));
+  }
+
   @Test public void testAuthenticatedClientsAllowed() throws Exception {
     // Create the subject for the client
     final Subject clientSubject = AvaticaJaasKrbUtil.loginUsingKeytab(