Fix empty TreeGrid (#9067)

2 files changed, 33 insertions, 0 deletions

diff --git a/uitest/src/main/java/com/vaadin/tests/components/treegrid/TreeGridEmpty.java b/uitest/src/main/java/com/vaadin/tests/components/treegrid/TreeGridEmpty.java
new file mode 100644
index 0000000000..362226a69a
--- /dev/null
+++ b/uitest/src/main/java/com/vaadin/tests/components/treegrid/TreeGridEmpty.java
@@ -0,0 +1,14 @@
+package com.vaadin.tests.components.treegrid;
+
+import com.vaadin.server.VaadinRequest;
+import com.vaadin.tests.components.AbstractTestUI;
+import com.vaadin.ui.TreeGrid;
+
+public class TreeGridEmpty extends AbstractTestUI {
+
+    @Override
+    protected void setup(VaadinRequest request) {
+        TreeGrid<String> grid = new TreeGrid<>();
+        addComponent(grid);
+    }
+}
diff --git a/uitest/src/test/java/com/vaadin/tests/components/treegrid/TreeGridEmptyTest.java b/uitest/src/test/java/com/vaadin/tests/components/treegrid/TreeGridEmptyTest.java
new file mode 100644
index 0000000000..2f0c886916
--- /dev/null
+++ b/uitest/src/test/java/com/vaadin/tests/components/treegrid/TreeGridEmptyTest.java
@@ -0,0 +1,19 @@
+package com.vaadin.tests.components.treegrid;
+
+import static org.junit.Assert.assertFalse;
+
+import org.junit.Test;
+import org.openqa.selenium.By;
+
+import com.vaadin.tests.tb3.SingleBrowserTest;
+
+public class TreeGridEmptyTest extends SingleBrowserTest {
+
+    @Test
+    public void empty_treegrid_initialized_correctly() {
+        setDebug(true);
+        openTestURL();
+        assertNoErrorNotifications();
+        assertFalse(isElementPresent(By.className("v-errorindicator")));
+    }
+}