feat: add Tooltip support for SideNavItem (#7849)

Author: HerbertsVaadin

vaadin-side-nav-flow-parent/vaadin-side-nav-flow-integration-tests/src/main/java/com/vaadin/flow/component/sidenav/tests/SideNavPage.java

@@ -46,6 +46,8 @@ public SideNavPage() {
         SideNavItem navigableParent = new SideNavItem("Navigable parent",
                 "vaadin-side-nav/side-nav-test-target-view");
         navigableParent.setId("navigable-parent");
+        navigableParent
+                .setTooltipText("Parent of items that can be navigated to.");
         navigableParent.addItem(new SideNavItem("Item 1",
                 "vaadin-side-nav/side-nav-test-target-view"));
         navigableParent.addItem(new SideNavItem("Item 2"));

vaadin-side-nav-flow-parent/vaadin-side-nav-flow/src/main/java/com/vaadin/flow/component/sidenav/SideNavItem.java

@@ -33,6 +33,7 @@
 import com.vaadin.flow.component.dependency.NpmPackage;
 import com.vaadin.flow.component.shared.HasPrefix;
 import com.vaadin.flow.component.shared.HasSuffix;
+import com.vaadin.flow.component.shared.HasTooltip;
 import com.vaadin.flow.dom.Element;
 import com.vaadin.flow.internal.JsonSerializer;
 import com.vaadin.flow.internal.UrlUtil;
@@ -59,8 +60,8 @@
 @Tag("vaadin-side-nav-item")
 @NpmPackage(value = "@vaadin/side-nav", version = "25.0.0-alpha16")
 @JsModule("@vaadin/side-nav/src/vaadin-side-nav-item.js")
-public class SideNavItem extends Component
-        implements HasSideNavItems, HasEnabled, HasPrefix, HasSuffix {
+public class SideNavItem extends Component implements HasSideNavItems,
+        HasEnabled, HasPrefix, HasSuffix, HasTooltip {
 
     private Element labelElement;
 

vaadin-side-nav-flow-parent/vaadin-side-nav-flow/src/test/java/com/vaadin/flow/component/sidenav/tests/SideNavItemTest.java

@@ -31,6 +31,7 @@
 import com.vaadin.flow.component.Component;
 import com.vaadin.flow.component.ComponentUtil;
 import com.vaadin.flow.component.html.Div;
+import com.vaadin.flow.component.shared.HasTooltip;
 import com.vaadin.flow.component.sidenav.SideNavItem;
 import com.vaadin.flow.dom.Element;
 import com.vaadin.flow.router.BeforeEvent;
@@ -218,6 +219,22 @@ public void createWithPathAndPrefix_pathAndPrefixIsSet() {
         Assert.assertEquals(prefixComponent, sideNavItem.getPrefixComponent());
     }
 
+    // TOOLTIP TESTS
+    @Test
+    public void implementsHasTooltip() {
+        sideNavItem = new SideNavItem("Test item", "test-path");
+        Assert.assertTrue(sideNavItem instanceof HasTooltip);
+    }
+
+    @Test
+    public void tooltipTextIsSet() {
+        sideNavItem = new SideNavItem("Test item", "test-path");
+        sideNavItem.setTooltipText("Test tooltip text");
+        Assert.assertNotNull(sideNavItem.getTooltip());
+        Assert.assertEquals("Test tooltip text",
+                sideNavItem.getTooltip().getText());
+    }
+
     // EXPAND AND COLLAPSE TESTS
 
     @Test