diff --git a/integration/__tests__/app.tests.ts b/integration/__tests__/app.tests.ts
index 74081a2061..8845ae91a8 100644
--- a/integration/__tests__/app.tests.ts
+++ b/integration/__tests__/app.tests.ts
@@ -13,6 +13,7 @@ const itif = (condition: boolean) => condition ? it : it.skip
 
 jest.setTimeout(60000)
 
+// FIXME (!): improve / simplify all css-selectors + use [data-test-id="some-id"] (already used in some tests below)
 describe("Lens integration tests", () => {
   const TEST_NAMESPACE = "integration-tests"
 
@@ -394,7 +395,7 @@ describe("Lens integration tests", () => {
         if (drawer !== "") {
           it(`shows ${drawer} drawer`, async () => {
             expect(clusterAdded).toBe(true)
-            await app.client.click(`.sidebar-nav #${drawerId} span.link-text`)
+            await app.client.click(`.sidebar-nav [data-test-id="${drawerId}"] span.link-text`)
             await app.client.waitUntilTextExists(`a[href^="/${pages[0].href}"]`, pages[0].name)
           })
         }
@@ -409,7 +410,7 @@ describe("Lens integration tests", () => {
           // hide the drawer
           it(`hides ${drawer} drawer`, async () => {
             expect(clusterAdded).toBe(true)
-            await app.client.click(`.sidebar-nav #${drawerId} span.link-text`)
+            await app.client.click(`.sidebar-nav [data-test-id="${drawerId}"] span.link-text`)
             await expect(app.client.waitUntilTextExists(`a[href^="/${pages[0].href}"]`, pages[0].name, 100)).rejects.toThrow()
           })
         }
@@ -428,7 +429,7 @@ describe("Lens integration tests", () => {
       it(`shows a logs for a pod`, async () => {
         expect(clusterAdded).toBe(true)
         // Go to Pods page
-        await app.client.click(".sidebar-nav #workloads span.link-text")
+        await app.client.click(".sidebar-nav [data-test-id='workloads'] span.link-text")
         await app.client.waitUntilTextExists('a[href^="/pods"]', "Pods")
         await app.client.click('a[href^="/pods"]')
         await app.client.waitUntilTextExists("div.TableCell", "kube-apiserver")
@@ -479,7 +480,7 @@ describe("Lens integration tests", () => {
 
       it(`creates a pod in ${TEST_NAMESPACE} namespace`, async () => {
         expect(clusterAdded).toBe(true)
-        await app.client.click(".sidebar-nav #workloads span.link-text")
+        await app.client.click(".sidebar-nav [data-test-id='workloads'] span.link-text")
         await app.client.waitUntilTextExists('a[href^="/pods"]', "Pods")
         await app.client.click('a[href^="/pods"]')
         await app.client.waitUntilTextExists("div.TableCell", "kube-apiserver")
diff --git a/src/extensions/registries/page-menu-registry.ts b/src/extensions/registries/page-menu-registry.ts
index ea2f04d288..6bd161ccb2 100644
--- a/src/extensions/registries/page-menu-registry.ts
+++ b/src/extensions/registries/page-menu-registry.ts
@@ -30,5 +30,5 @@ export class PageMenuRegistry<T extends PageMenuRegistration> extends BaseRegist
   }
 }
 
-export const globalPageMenuRegistry = new PageMenuRegistry();
+export const globalPageMenuRegistry = new PageMenuRegistry<Omit<PageMenuRegistration, "subMenus">>();
 export const clusterPageMenuRegistry = new PageMenuRegistry();
diff --git a/src/extensions/registries/page-registry.ts b/src/extensions/registries/page-registry.ts
index 0169f99de5..886ab8a584 100644
--- a/src/extensions/registries/page-registry.ts
+++ b/src/extensions/registries/page-registry.ts
@@ -20,7 +20,7 @@ export interface PageComponents {
   Page: React.ComponentType<any>;
 }
 
-export class PageRegistry extends BaseRegistry<PageRegistration> {
+export class PageRegistry<T extends PageRegistration> extends BaseRegistry<T> {
   getItems() {
     return super.getItems().map(item => {
       item.routePath = item.extension.getPageRoute(item.routePath)
@@ -29,5 +29,5 @@ export class PageRegistry extends BaseRegistry<PageRegistration> {
   }
 }
 
-export const globalPageRegistry = new PageRegistry();
+export const globalPageRegistry = new PageRegistry<Omit<PageRegistration, "subPages">>();
 export const clusterPageRegistry = new PageRegistry();
diff --git a/src/renderer/components/layout/sidebar.tsx b/src/renderer/components/layout/sidebar.tsx
index 064a3744a1..b70d7a3e62 100644
--- a/src/renderer/components/layout/sidebar.tsx
+++ b/src/renderer/components/layout/sidebar.tsx
@@ -97,6 +97,7 @@ export class Sidebar extends React.Component<Props> {
           </div>
           <div className="sidebar-nav flex column box grow-fixed">
             <SidebarNavItem
+              testId="cluster"
               isActive={isActiveRoute(clusterRoute)}
               isHidden={!isAllowedResource("nodes")}
               url={clusterURL()}
@@ -104,6 +105,7 @@ export class Sidebar extends React.Component<Props> {
               icon={<Icon svg="kube"/>}
             />
             <SidebarNavItem
+              testId="nodes"
               isActive={isActiveRoute(nodesRoute)}
               isHidden={!isAllowedResource("nodes")}
               url={nodesURL()}
@@ -111,6 +113,7 @@ export class Sidebar extends React.Component<Props> {
               icon={<Icon svg="nodes"/>}
             />
             <SidebarNavItem
+              testId="workloads"
               isActive={isActiveRoute(workloadsRoute)}
               isHidden={Workloads.tabRoutes.length == 0}
               url={workloadsURL({ query })}
@@ -119,6 +122,7 @@ export class Sidebar extends React.Component<Props> {
               icon={<Icon svg="workloads"/>}
             />
             <SidebarNavItem
+              testId="config"
               isActive={isActiveRoute(configRoute)}
               isHidden={Config.tabRoutes.length == 0}
               url={configURL({ query })}
@@ -127,6 +131,7 @@ export class Sidebar extends React.Component<Props> {
               icon={<Icon material="list"/>}
             />
             <SidebarNavItem
+              testId="networks"
               isActive={isActiveRoute(networkRoute)}
               isHidden={Network.tabRoutes.length == 0}
               url={networkURL({ query })}
@@ -135,6 +140,7 @@ export class Sidebar extends React.Component<Props> {
               icon={<Icon material="device_hub"/>}
             />
             <SidebarNavItem
+              testId="storage"
               isActive={isActiveRoute(storageRoute)}
               isHidden={Storage.tabRoutes.length == 0}
               url={storageURL({ query })}
@@ -143,6 +149,7 @@ export class Sidebar extends React.Component<Props> {
               text={<Trans>Storage</Trans>}
             />
             <SidebarNavItem
+              testId="namespaces"
               isActive={isActiveRoute(namespacesRoute)}
               isHidden={!isAllowedResource("namespaces")}
               url={namespacesURL()}
@@ -150,6 +157,7 @@ export class Sidebar extends React.Component<Props> {
               text={<Trans>Namespaces</Trans>}
             />
             <SidebarNavItem
+              testId="events"
               isActive={isActiveRoute(eventRoute)}
               isHidden={!isAllowedResource("events")}
               url={eventsURL({ query })}
@@ -157,6 +165,7 @@ export class Sidebar extends React.Component<Props> {
               text={<Trans>Events</Trans>}
             />
             <SidebarNavItem
+              testId="apps"
               isActive={isActiveRoute(appsRoute)}
               url={appsURL({ query })}
               subMenus={Apps.tabRoutes}
@@ -164,6 +173,7 @@ export class Sidebar extends React.Component<Props> {
               text={<Trans>Apps</Trans>}
             />
             <SidebarNavItem
+              testId="users"
               isActive={isActiveRoute(usersManagementRoute)}
               url={usersManagementURL({ query })}
               subMenus={UserManagement.tabRoutes}
@@ -171,6 +181,7 @@ export class Sidebar extends React.Component<Props> {
               text={<Trans>Access Control</Trans>}
             />
             <SidebarNavItem
+              testId="custom-resources"
               isActive={isActiveRoute(crdRoute)}
               isHidden={!isAllowedResource("customresourcedefinitions")}
               url={crdURL()}
@@ -209,6 +220,7 @@ interface SidebarNavItemProps {
   isHidden?: boolean;
   isActive?: boolean;
   subMenus?: TabLayoutRoute[];
+  testId?: string; // data-test-id="" property for integration tests
 }
 
 const navItemStorage = createStorage<[string, boolean][]>("sidebar_menu_item", []);
@@ -233,14 +245,14 @@ class SidebarNavItem extends React.Component<SidebarNavItemProps> {
   };
 
   render() {
-    const { isHidden, isActive, subMenus = [], icon, text, url, children, className } = this.props;
+    const { isHidden, isActive, subMenus = [], icon, text, url, children, className, testId } = this.props;
     if (isHidden) {
       return null;
     }
     const extendedView = (subMenus.length > 0 || children) && this.context.pinned;
     if (extendedView) {
       return (
-        <div className={cssNames("SidebarNavItem", className)}>
+        <div className={cssNames("SidebarNavItem", className)} data-test-id={testId}>
           <div className={cssNames("nav-item", { active: isActive })} onClick={this.toggleSubMenu}>
             {icon}
             <span className="link-text">{text}</span>