add integration test

testsuite/integration-arquillian/test-apps/servlets/src/main/java/org/keycloak/testsuite/adapter/servlet/CustomerDatabaseServlet.java

@@ -40,7 +40,13 @@ public class CustomerDatabaseServlet extends HttpServlet {
         pw.println("Bill Burke");
         pw.print("</body></html>");
         pw.flush();
+    }
     
-
+    @Override
+    protected void doDelete(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        req.logout();
+        PrintWriter pw = resp.getWriter();
+        pw.println("servlet logout from database ok");
+        pw.flush();  
     }
 }

testsuite/integration-arquillian/test-apps/servlets/src/main/java/org/keycloak/testsuite/adapter/servlet/CustomerServlet.java

@@ -43,16 +43,38 @@ public class CustomerServlet extends HttpServlet {
     @Override
     protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
         PrintWriter pw = resp.getWriter();
+        KeycloakSecurityContext context = (KeycloakSecurityContext) req.getAttribute(KeycloakSecurityContext.class.getName());
         if (req.getRequestURI().endsWith("logout")) {
             resp.setStatus(200);
             pw.println("servlet logout ok");
             
+            //Clear principal form database-service by calling logout
+            StringBuilder result = new StringBuilder();
+            String urlBase;
+
+            if (System.getProperty("app.server.ssl.required", "false").equals("true")) {
+                urlBase = System.getProperty("app.server.ssl.base.url", "https://localhost:8643");
+            } else {
+                urlBase = System.getProperty("app.server.base.url", "http://localhost:8280");
+            }
+
+            URL url = new URL(urlBase + "/customer-db/");
+            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+            conn.setRequestMethod("DELETE");
+            conn.setRequestProperty(HttpHeaders.AUTHORIZATION, "Bearer " + context.getTokenString());
+            BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream()));
+            String line;
+            while ((line = rd.readLine()) != null) {
+              result.append(line);
+            }
+            rd.close();
+            pw.println(result.toString());
             // Call logout before pw.flush
             req.logout();
             pw.flush();
             return;
         }
-        KeycloakSecurityContext context = (KeycloakSecurityContext) req.getAttribute(KeycloakSecurityContext.class.getName());
+       
 
         //try {
         StringBuilder result = new StringBuilder();

testsuite/integration-arquillian/tests/base/src/test/java/org/keycloak/testsuite/adapter/servlet/AbstractDemoServletsAdapterTest.java

@@ -387,7 +387,9 @@ public abstract class AbstractDemoServletsAdapterTest extends AbstractServletsAd
         // test logout
 
         driver.navigate().to(customerPortal + "/logout");
-        assertTrue(driver.getPageSource().contains("servlet logout ok"));
+        pageSource = driver.getPageSource();
+        assertTrue(pageSource.contains("servlet logout ok"));
+        assertTrue(pageSource.contains("servlet logout from database ok"));
 
         customerPortal.navigateTo();
         assertCurrentUrlStartsWithLoginUrlOf(testRealmPage);