Fix Grid initial data when changing TabSheet Tab (#10872)

1 files changed, 17 insertions, 0 deletions

diff --git a/uitest/src/test/java/com/vaadin/tests/components/grid/GridInTabSheetTest.java b/uitest/src/test/java/com/vaadin/tests/components/grid/GridInTabSheetTest.java
index e20ec622c7..785bda8261 100644
--- a/uitest/src/test/java/com/vaadin/tests/components/grid/GridInTabSheetTest.java
+++ b/uitest/src/test/java/com/vaadin/tests/components/grid/GridInTabSheetTest.java
@@ -2,6 +2,8 @@ package com.vaadin.tests.components.grid;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertTrue;
 
 import org.junit.Test;
 
@@ -68,6 +70,21 @@ public class GridInTabSheetTest extends MultiBrowserTest {
         assertNoNotification();
     }
 
+    @Test
+    public void testNoDataRequestFromClientWhenSwitchingTab() {
+        setDebug(true);
+        openTestURL();
+
+        TabSheetElement tabsheet = $(TabSheetElement.class).first();
+        tabsheet.openTab("Label");
+        tabsheet.openTab("Grid");
+
+        getLogs().forEach(logText -> assertTrue(
+                "There should be no logged requests, was: " + logText,
+                logText.trim().isEmpty()));
+        assertNoNotification();
+    }
+
     private void removeGridRow() {
         $(ButtonElement.class).caption("Remove row from Grid").first().click();
     }