Fix client and server filter state mismatch in Combobox (#10630)

Fixes #10624

1 files changed, 52 insertions, 0 deletions

diff --git a/uitest/src/test/java/com/vaadin/tests/components/combobox/ComboBoxFilterClearTest.java b/uitest/src/test/java/com/vaadin/tests/components/combobox/ComboBoxFilterClearTest.java
new file mode 100644
index 0000000000..29beb29b3a
--- /dev/null
+++ b/uitest/src/test/java/com/vaadin/tests/components/combobox/ComboBoxFilterClearTest.java
@@ -0,0 +1,52 @@
+package com.vaadin.tests.components.combobox;
+
+import static org.junit.Assert.assertEquals;
+
+import java.util.List;
+
+import org.junit.Test;
+import org.openqa.selenium.Keys;
+import org.openqa.selenium.WebElement;
+import org.openqa.selenium.interactions.Actions;
+
+import com.vaadin.testbench.By;
+import com.vaadin.testbench.elements.ButtonElement;
+import com.vaadin.testbench.elements.ComboBoxElement;
+import com.vaadin.tests.tb3.MultiBrowserTest;
+
+public class ComboBoxFilterClearTest extends MultiBrowserTest {
+    ComboBoxElement comboBox;
+
+    @Test
+    public void testFilterCleared() {
+        openTestURL();
+        comboBox = $(ComboBoxElement.class).first();
+        ButtonElement toggleVisibility = $(ButtonElement.class)
+                .id("toggleVisibility");
+        ButtonElement setNull = $(ButtonElement.class).id("setNull");
+
+        sendKeysToInput("b0", Keys.TAB);
+        assertEquals("b0", comboBox.getText());
+
+        toggleVisibility.click();
+        waitForElementNotPresent(By.className("v-filterselect"));
+
+        setNull.click();
+
+        toggleVisibility.click();
+        waitForElementPresent(By.className("v-filterselect"));
+        comboBox = $(ComboBoxElement.class).first();
+
+        WebElement suggestionPopup = comboBox.getSuggestionPopup();
+
+        List<WebElement> menuItems = suggestionPopup
+                .findElements(By.className("gwt-MenuItem"));
+        assertEquals("a0", menuItems.get(1).getText());
+    }
+
+    private void sendKeysToInput(CharSequence... keys) {
+        // ensure mouse is located over the ComboBox to avoid hover issues
+        new Actions(getDriver()).moveToElement(comboBox).perform();
+        comboBox.sendKeys(keys);
+    }
+}