Handle OutOfSync by resyncing automatically (#10780)

Change-Id: I5958d82b09519dabe9f2af792bd216d3b426c1c9

1 files changed, 55 insertions, 0 deletions

diff --git a/uitest/src/com/vaadin/tests/components/OutOfSyncTest.java b/uitest/src/com/vaadin/tests/components/OutOfSyncTest.java
new file mode 100644
index 0000000000..0efb519e8d
--- /dev/null
+++ b/uitest/src/com/vaadin/tests/components/OutOfSyncTest.java
@@ -0,0 +1,55 @@
+package com.vaadin.tests.components;
+
+import com.vaadin.server.VaadinRequest;
+import com.vaadin.ui.Button;
+import com.vaadin.ui.Button.ClickEvent;
+import com.vaadin.ui.Button.ClickListener;
+import com.vaadin.ui.Notification;
+
+public class OutOfSyncTest extends AbstractTestUI {
+
+    @Override
+    protected void setup(VaadinRequest request) {
+        Button b = new Button("Click me after 1s to be out of sync");
+        b.addClickListener(new ClickListener() {
+
+            @Override
+            public void buttonClick(ClickEvent event) {
+                Notification.show("This code will never be reached");
+            }
+        });
+        setContent(b);
+        Thread t = new Thread(new Runnable() {
+
+            @Override
+            public void run() {
+                try {
+                    Thread.sleep(500);
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
+                // Remove button but prevent repaint -> causes out of sync
+                // issues
+                getSession().lock();
+                try {
+                    setContent(null);
+                    getConnectorTracker().markClean(OutOfSyncTest.this);
+                } finally {
+                    getSession().unlock();
+                }
+            }
+        });
+        t.start();
+    }
+
+    @Override
+    protected String getTestDescription() {
+        return "Click the button after 1s when it has been removed server side (causing synchronization problems)";
+    }
+
+    @Override
+    protected Integer getTicketNumber() {
+        return 10780;
+    }
+
+}