diff --git a/src/features/helm-releases/__snapshots__/showing-details-for-helm-release.test.ts.snap b/src/features/helm-releases/__snapshots__/showing-details-for-helm-release.test.ts.snap
index 7c995becc5..a4159c60be 100644
--- a/src/features/helm-releases/__snapshots__/showing-details-for-helm-release.test.ts.snap
+++ b/src/features/helm-releases/__snapshots__/showing-details-for-helm-release.test.ts.snap
@@ -596,14 +596,9 @@ exports[`showing details for helm release given application is started when navi
                     </div>
                   </div>
                   <div
-                    class="NoItems flex box grow"
-                  >
-                    <div
-                      class="box center"
-                    >
-                      Item list is empty
-                    </div>
-                  </div>
+                    class="Spinner singleColor center"
+                    data-testid="helm-releases-spinner"
+                  />
                 </div>
                 <div
                   class="AddRemoveButtons flex gaps"
@@ -1412,6 +1407,7 @@ exports[`showing details for helm release given application is started when navi
                       >
                         <i
                           class="Icon material interactive focusable small"
+                          data-testid="dock-tab-close-for-terminal"
                           tabindex="0"
                         >
                           <span
@@ -1421,7 +1417,9 @@ exports[`showing details for helm release given application is started when navi
                             close
                           </span>
                         </i>
-                        <div>
+                        <div
+                          data-testid="tooltip-content-for-dock-tab-close-for-terminal"
+                        >
                           Close ⌘+W
                         </div>
                       </div>
@@ -2162,6 +2160,7 @@ exports[`showing details for helm release given application is started when navi
                                 <div>
                                   <i
                                     class="Icon material interactive focusable"
+                                    data-testid="menu-actions-icon-for-release-menu-for-some-namespace/some-name"
                                     id="menu-actions-for-release-menu-for-some-namespace/some-name"
                                     tabindex="0"
                                   >
@@ -2243,6 +2242,7 @@ exports[`showing details for helm release given application is started when navi
                                 <div>
                                   <i
                                     class="Icon material interactive focusable"
+                                    data-testid="menu-actions-icon-for-release-menu-for-some-other-namespace/some-other-name"
                                     id="menu-actions-for-release-menu-for-some-other-namespace/some-other-name"
                                     tabindex="0"
                                   >
@@ -2323,6 +2323,7 @@ exports[`showing details for helm release given application is started when navi
                       >
                         <i
                           class="Icon material interactive focusable small"
+                          data-testid="dock-tab-close-for-terminal"
                           tabindex="0"
                         >
                           <span
@@ -2332,7 +2333,9 @@ exports[`showing details for helm release given application is started when navi
                             close
                           </span>
                         </i>
-                        <div>
+                        <div
+                          data-testid="tooltip-content-for-dock-tab-close-for-terminal"
+                        >
                           Close ⌘+W
                         </div>
                       </div>
@@ -3073,6 +3076,7 @@ exports[`showing details for helm release given application is started when navi
                                 <div>
                                   <i
                                     class="Icon material interactive focusable"
+                                    data-testid="menu-actions-icon-for-release-menu-for-some-namespace/some-name"
                                     id="menu-actions-for-release-menu-for-some-namespace/some-name"
                                     tabindex="0"
                                   >
@@ -3154,6 +3158,7 @@ exports[`showing details for helm release given application is started when navi
                                 <div>
                                   <i
                                     class="Icon material interactive focusable"
+                                    data-testid="menu-actions-icon-for-release-menu-for-some-other-namespace/some-other-name"
                                     id="menu-actions-for-release-menu-for-some-other-namespace/some-other-name"
                                     tabindex="0"
                                   >
@@ -3234,6 +3239,7 @@ exports[`showing details for helm release given application is started when navi
                       >
                         <i
                           class="Icon material interactive focusable small"
+                          data-testid="dock-tab-close-for-terminal"
                           tabindex="0"
                         >
                           <span
@@ -3243,7 +3249,9 @@ exports[`showing details for helm release given application is started when navi
                             close
                           </span>
                         </i>
-                        <div>
+                        <div
+                          data-testid="tooltip-content-for-dock-tab-close-for-terminal"
+                        >
                           Close ⌘+W
                         </div>
                       </div>
@@ -4045,6 +4053,7 @@ exports[`showing details for helm release given application is started when navi
                                 <div>
                                   <i
                                     class="Icon material interactive focusable"
+                                    data-testid="menu-actions-icon-for-release-menu-for-some-namespace/some-name"
                                     id="menu-actions-for-release-menu-for-some-namespace/some-name"
                                     tabindex="0"
                                   >
@@ -4126,6 +4135,7 @@ exports[`showing details for helm release given application is started when navi
                                 <div>
                                   <i
                                     class="Icon material interactive focusable"
+                                    data-testid="menu-actions-icon-for-release-menu-for-some-other-namespace/some-other-name"
                                     id="menu-actions-for-release-menu-for-some-other-namespace/some-other-name"
                                     tabindex="0"
                                   >
@@ -4206,6 +4216,7 @@ exports[`showing details for helm release given application is started when navi
                       >
                         <i
                           class="Icon material interactive focusable small"
+                          data-testid="dock-tab-close-for-terminal"
                           tabindex="0"
                         >
                           <span
@@ -4215,7 +4226,9 @@ exports[`showing details for helm release given application is started when navi
                             close
                           </span>
                         </i>
-                        <div>
+                        <div
+                          data-testid="tooltip-content-for-dock-tab-close-for-terminal"
+                        >
                           Close ⌘+W
                         </div>
                       </div>
@@ -5017,6 +5030,7 @@ exports[`showing details for helm release given application is started when navi
                                 <div>
                                   <i
                                     class="Icon material interactive focusable"
+                                    data-testid="menu-actions-icon-for-release-menu-for-some-namespace/some-name"
                                     id="menu-actions-for-release-menu-for-some-namespace/some-name"
                                     tabindex="0"
                                   >
@@ -5098,6 +5112,7 @@ exports[`showing details for helm release given application is started when navi
                                 <div>
                                   <i
                                     class="Icon material interactive focusable"
+                                    data-testid="menu-actions-icon-for-release-menu-for-some-other-namespace/some-other-name"
                                     id="menu-actions-for-release-menu-for-some-other-namespace/some-other-name"
                                     tabindex="0"
                                   >
@@ -5178,6 +5193,7 @@ exports[`showing details for helm release given application is started when navi
                       >
                         <i
                           class="Icon material interactive focusable small"
+                          data-testid="dock-tab-close-for-terminal"
                           tabindex="0"
                         >
                           <span
@@ -5187,7 +5203,9 @@ exports[`showing details for helm release given application is started when navi
                             close
                           </span>
                         </i>
-                        <div>
+                        <div
+                          data-testid="tooltip-content-for-dock-tab-close-for-terminal"
+                        >
                           Close ⌘+W
                         </div>
                       </div>
@@ -5288,6 +5306,7 @@ exports[`showing details for helm release given application is started when navi
         >
           <li
             class="MenuItem"
+            data-testid="upgrade-chart-menu-item-for-some-namespace/some-name"
             tabindex="0"
           >
             <i
@@ -6243,6 +6262,7 @@ exports[`showing details for helm release given application is started when navi
                                 <div>
                                   <i
                                     class="Icon material interactive focusable"
+                                    data-testid="menu-actions-icon-for-release-menu-for-some-namespace/some-name"
                                     id="menu-actions-for-release-menu-for-some-namespace/some-name"
                                     tabindex="0"
                                   >
@@ -6324,6 +6344,7 @@ exports[`showing details for helm release given application is started when navi
                                 <div>
                                   <i
                                     class="Icon material interactive focusable"
+                                    data-testid="menu-actions-icon-for-release-menu-for-some-other-namespace/some-other-name"
                                     id="menu-actions-for-release-menu-for-some-other-namespace/some-other-name"
                                     tabindex="0"
                                   >
@@ -6404,6 +6425,7 @@ exports[`showing details for helm release given application is started when navi
                       >
                         <i
                           class="Icon material interactive focusable small"
+                          data-testid="dock-tab-close-for-terminal"
                           tabindex="0"
                         >
                           <span
@@ -6413,7 +6435,9 @@ exports[`showing details for helm release given application is started when navi
                             close
                           </span>
                         </i>
-                        <div>
+                        <div
+                          data-testid="tooltip-content-for-dock-tab-close-for-terminal"
+                        >
                           Close ⌘+W
                         </div>
                       </div>
@@ -6514,6 +6538,7 @@ exports[`showing details for helm release given application is started when navi
         >
           <li
             class="MenuItem"
+            data-testid="upgrade-chart-menu-item-for-some-namespace/some-name"
             tabindex="0"
           >
             <i
@@ -7469,6 +7494,7 @@ exports[`showing details for helm release given application is started when navi
                                 <div>
                                   <i
                                     class="Icon material interactive focusable"
+                                    data-testid="menu-actions-icon-for-release-menu-for-some-namespace/some-name"
                                     id="menu-actions-for-release-menu-for-some-namespace/some-name"
                                     tabindex="0"
                                   >
@@ -7550,6 +7576,7 @@ exports[`showing details for helm release given application is started when navi
                                 <div>
                                   <i
                                     class="Icon material interactive focusable"
+                                    data-testid="menu-actions-icon-for-release-menu-for-some-other-namespace/some-other-name"
                                     id="menu-actions-for-release-menu-for-some-other-namespace/some-other-name"
                                     tabindex="0"
                                   >
@@ -7630,6 +7657,7 @@ exports[`showing details for helm release given application is started when navi
                       >
                         <i
                           class="Icon material interactive focusable small"
+                          data-testid="dock-tab-close-for-terminal"
                           tabindex="0"
                         >
                           <span
@@ -7639,7 +7667,9 @@ exports[`showing details for helm release given application is started when navi
                             close
                           </span>
                         </i>
-                        <div>
+                        <div
+                          data-testid="tooltip-content-for-dock-tab-close-for-terminal"
+                        >
                           Close ⌘+W
                         </div>
                       </div>
@@ -7740,6 +7770,7 @@ exports[`showing details for helm release given application is started when navi
         >
           <li
             class="MenuItem"
+            data-testid="upgrade-chart-menu-item-for-some-namespace/some-name"
             tabindex="0"
           >
             <i
@@ -8683,6 +8714,7 @@ exports[`showing details for helm release given application is started when navi
                       >
                         <i
                           class="Icon material interactive focusable small"
+                          data-testid="dock-tab-close-for-terminal"
                           tabindex="0"
                         >
                           <span
@@ -8692,7 +8724,9 @@ exports[`showing details for helm release given application is started when navi
                             close
                           </span>
                         </i>
-                        <div>
+                        <div
+                          data-testid="tooltip-content-for-dock-tab-close-for-terminal"
+                        >
                           Close ⌘+W
                         </div>
                       </div>
@@ -8793,6 +8827,7 @@ exports[`showing details for helm release given application is started when navi
         >
           <li
             class="MenuItem"
+            data-testid="upgrade-chart-menu-item-for-some-namespace/some-name"
             tabindex="0"
           >
             <i
@@ -9736,6 +9771,7 @@ exports[`showing details for helm release given application is started when navi
                       >
                         <i
                           class="Icon material interactive focusable small"
+                          data-testid="dock-tab-close-for-terminal"
                           tabindex="0"
                         >
                           <span
@@ -9745,7 +9781,9 @@ exports[`showing details for helm release given application is started when navi
                             close
                           </span>
                         </i>
-                        <div>
+                        <div
+                          data-testid="tooltip-content-for-dock-tab-close-for-terminal"
+                        >
                           Close ⌘+W
                         </div>
                       </div>
@@ -9846,6 +9884,7 @@ exports[`showing details for helm release given application is started when navi
         >
           <li
             class="MenuItem"
+            data-testid="upgrade-chart-menu-item-for-some-namespace/some-name"
             tabindex="0"
           >
             <i
@@ -10803,6 +10842,7 @@ exports[`showing details for helm release given application is started when navi
                                 <div>
                                   <i
                                     class="Icon material interactive focusable"
+                                    data-testid="menu-actions-icon-for-release-menu-for-some-namespace/some-name"
                                     id="menu-actions-for-release-menu-for-some-namespace/some-name"
                                     tabindex="0"
                                   >
@@ -10884,6 +10924,7 @@ exports[`showing details for helm release given application is started when navi
                                 <div>
                                   <i
                                     class="Icon material interactive focusable"
+                                    data-testid="menu-actions-icon-for-release-menu-for-some-other-namespace/some-other-name"
                                     id="menu-actions-for-release-menu-for-some-other-namespace/some-other-name"
                                     tabindex="0"
                                   >
@@ -10964,6 +11005,7 @@ exports[`showing details for helm release given application is started when navi
                       >
                         <i
                           class="Icon material interactive focusable small"
+                          data-testid="dock-tab-close-for-terminal"
                           tabindex="0"
                         >
                           <span
@@ -10973,7 +11015,9 @@ exports[`showing details for helm release given application is started when navi
                             close
                           </span>
                         </i>
-                        <div>
+                        <div
+                          data-testid="tooltip-content-for-dock-tab-close-for-terminal"
+                        >
                           Close ⌘+W
                         </div>
                       </div>
@@ -11074,6 +11118,7 @@ exports[`showing details for helm release given application is started when navi
         >
           <li
             class="MenuItem"
+            data-testid="upgrade-chart-menu-item-for-some-namespace/some-name"
             tabindex="0"
           >
             <i
@@ -12029,6 +12074,7 @@ exports[`showing details for helm release given application is started when navi
                                 <div>
                                   <i
                                     class="Icon material interactive focusable"
+                                    data-testid="menu-actions-icon-for-release-menu-for-some-namespace/some-name"
                                     id="menu-actions-for-release-menu-for-some-namespace/some-name"
                                     tabindex="0"
                                   >
@@ -12110,6 +12156,7 @@ exports[`showing details for helm release given application is started when navi
                                 <div>
                                   <i
                                     class="Icon material interactive focusable"
+                                    data-testid="menu-actions-icon-for-release-menu-for-some-other-namespace/some-other-name"
                                     id="menu-actions-for-release-menu-for-some-other-namespace/some-other-name"
                                     tabindex="0"
                                   >
@@ -12190,6 +12237,7 @@ exports[`showing details for helm release given application is started when navi
                       >
                         <i
                           class="Icon material interactive focusable small"
+                          data-testid="dock-tab-close-for-terminal"
                           tabindex="0"
                         >
                           <span
@@ -12199,7 +12247,9 @@ exports[`showing details for helm release given application is started when navi
                             close
                           </span>
                         </i>
-                        <div>
+                        <div
+                          data-testid="tooltip-content-for-dock-tab-close-for-terminal"
+                        >
                           Close ⌘+W
                         </div>
                       </div>
@@ -12239,6 +12289,7 @@ exports[`showing details for helm release given application is started when navi
                       >
                         <i
                           class="Icon material interactive focusable small"
+                          data-testid="dock-tab-close-for-some-tab-id"
                           tabindex="0"
                         >
                           <span
@@ -12248,7 +12299,9 @@ exports[`showing details for helm release given application is started when navi
                             close
                           </span>
                         </i>
-                        <div>
+                        <div
+                          data-testid="tooltip-content-for-dock-tab-close-for-some-tab-id"
+                        >
                           Close ⌘+W
                         </div>
                       </div>
@@ -12998,6 +13051,7 @@ exports[`showing details for helm release given application is started when navi
                                 <div>
                                   <i
                                     class="Icon material interactive focusable"
+                                    data-testid="menu-actions-icon-for-release-menu-for-some-namespace/some-name"
                                     id="menu-actions-for-release-menu-for-some-namespace/some-name"
                                     tabindex="0"
                                   >
@@ -13079,6 +13133,7 @@ exports[`showing details for helm release given application is started when navi
                                 <div>
                                   <i
                                     class="Icon material interactive focusable"
+                                    data-testid="menu-actions-icon-for-release-menu-for-some-other-namespace/some-other-name"
                                     id="menu-actions-for-release-menu-for-some-other-namespace/some-other-name"
                                     tabindex="0"
                                   >
@@ -13159,6 +13214,7 @@ exports[`showing details for helm release given application is started when navi
                       >
                         <i
                           class="Icon material interactive focusable small"
+                          data-testid="dock-tab-close-for-terminal"
                           tabindex="0"
                         >
                           <span
@@ -13168,7 +13224,9 @@ exports[`showing details for helm release given application is started when navi
                             close
                           </span>
                         </i>
-                        <div>
+                        <div
+                          data-testid="tooltip-content-for-dock-tab-close-for-terminal"
+                        >
                           Close ⌘+W
                         </div>
                       </div>
@@ -13973,6 +14031,7 @@ exports[`showing details for helm release given application is started when navi
                                 <div>
                                   <i
                                     class="Icon material interactive focusable"
+                                    data-testid="menu-actions-icon-for-release-menu-for-some-namespace/some-name"
                                     id="menu-actions-for-release-menu-for-some-namespace/some-name"
                                     tabindex="0"
                                   >
@@ -14054,6 +14113,7 @@ exports[`showing details for helm release given application is started when navi
                                 <div>
                                   <i
                                     class="Icon material interactive focusable"
+                                    data-testid="menu-actions-icon-for-release-menu-for-some-other-namespace/some-other-name"
                                     id="menu-actions-for-release-menu-for-some-other-namespace/some-other-name"
                                     tabindex="0"
                                   >
@@ -14134,6 +14194,7 @@ exports[`showing details for helm release given application is started when navi
                       >
                         <i
                           class="Icon material interactive focusable small"
+                          data-testid="dock-tab-close-for-terminal"
                           tabindex="0"
                         >
                           <span
@@ -14143,7 +14204,9 @@ exports[`showing details for helm release given application is started when navi
                             close
                           </span>
                         </i>
-                        <div>
+                        <div
+                          data-testid="tooltip-content-for-dock-tab-close-for-terminal"
+                        >
                           Close ⌘+W
                         </div>
                       </div>
@@ -14884,6 +14947,7 @@ exports[`showing details for helm release given application is started when navi
                                 <div>
                                   <i
                                     class="Icon material interactive focusable"
+                                    data-testid="menu-actions-icon-for-release-menu-for-some-namespace/some-name"
                                     id="menu-actions-for-release-menu-for-some-namespace/some-name"
                                     tabindex="0"
                                   >
@@ -14965,6 +15029,7 @@ exports[`showing details for helm release given application is started when navi
                                 <div>
                                   <i
                                     class="Icon material interactive focusable"
+                                    data-testid="menu-actions-icon-for-release-menu-for-some-other-namespace/some-other-name"
                                     id="menu-actions-for-release-menu-for-some-other-namespace/some-other-name"
                                     tabindex="0"
                                   >
@@ -15045,6 +15110,7 @@ exports[`showing details for helm release given application is started when navi
                       >
                         <i
                           class="Icon material interactive focusable small"
+                          data-testid="dock-tab-close-for-terminal"
                           tabindex="0"
                         >
                           <span
@@ -15054,7 +15120,9 @@ exports[`showing details for helm release given application is started when navi
                             close
                           </span>
                         </i>
-                        <div>
+                        <div
+                          data-testid="tooltip-content-for-dock-tab-close-for-terminal"
+                        >
                           Close ⌘+W
                         </div>
                       </div>
@@ -15856,6 +15924,7 @@ exports[`showing details for helm release given application is started when navi
                                 <div>
                                   <i
                                     class="Icon material interactive focusable"
+                                    data-testid="menu-actions-icon-for-release-menu-for-some-namespace/some-name"
                                     id="menu-actions-for-release-menu-for-some-namespace/some-name"
                                     tabindex="0"
                                   >
@@ -15937,6 +16006,7 @@ exports[`showing details for helm release given application is started when navi
                                 <div>
                                   <i
                                     class="Icon material interactive focusable"
+                                    data-testid="menu-actions-icon-for-release-menu-for-some-other-namespace/some-other-name"
                                     id="menu-actions-for-release-menu-for-some-other-namespace/some-other-name"
                                     tabindex="0"
                                   >
@@ -16017,6 +16087,7 @@ exports[`showing details for helm release given application is started when navi
                       >
                         <i
                           class="Icon material interactive focusable small"
+                          data-testid="dock-tab-close-for-terminal"
                           tabindex="0"
                         >
                           <span
@@ -16026,7 +16097,9 @@ exports[`showing details for helm release given application is started when navi
                             close
                           </span>
                         </i>
-                        <div>
+                        <div
+                          data-testid="tooltip-content-for-dock-tab-close-for-terminal"
+                        >
                           Close ⌘+W
                         </div>
                       </div>
diff --git a/src/features/helm-releases/showing-details-for-helm-release.test.ts b/src/features/helm-releases/showing-details-for-helm-release.test.ts
index f906d2c5ce..57bf101414 100644
--- a/src/features/helm-releases/showing-details-for-helm-release.test.ts
+++ b/src/features/helm-releases/showing-details-for-helm-release.test.ts
@@ -11,8 +11,6 @@ import type { AsyncFnMock } from "@async-fn/jest";
 import asyncFn from "@async-fn/jest";
 import type { RequestHelmReleases } from "../../common/k8s-api/endpoints/helm-releases.api/request-releases.injectable";
 import requestHelmReleasesInjectable from "../../common/k8s-api/endpoints/helm-releases.api/request-releases.injectable";
-import namespaceStoreInjectable from "../../renderer/components/+namespaces/store.injectable";
-import type { NamespaceStore } from "../../renderer/components/+namespaces/store";
 import type { RequestHelmReleaseConfiguration } from "../../common/k8s-api/endpoints/helm-releases.api/request-configuration.injectable";
 import requestHelmReleaseConfigurationInjectable from "../../common/k8s-api/endpoints/helm-releases.api/request-configuration.injectable";
 import type { RequestHelmReleaseUpdate } from "../../common/k8s-api/endpoints/helm-releases.api/request-update.injectable";
@@ -77,16 +75,12 @@ describe("showing details for helm release", () => {
       windowDi.override(requestHelmChartVersionsInjectable, () => requestHelmChartVersionsMock);
       windowDi.override(requestHelmChartReadmeInjectable, () => requestHelmChartReadmeMock);
       windowDi.override(requestHelmChartValuesInjectable, () => requestHelmChartValuesMock);
-      windowDi.override(
-        namespaceStoreInjectable,
-        () =>
-          ({
-            contextNamespaces: ["some-namespace", "some-other-namespace"],
-            items: [],
-            selectNamespaces: () => {},
-          } as unknown as NamespaceStore),
-      );
     });
+
+    builder.namespaces.add("some-namespace");
+    builder.namespaces.select("some-namespace");
+    builder.namespaces.add("some-namespace");
+    builder.namespaces.select("some-other-namespace");
   });
 
   describe("given application is started", () => {
diff --git a/src/renderer/components/test-utils/get-application-builder.tsx b/src/renderer/components/test-utils/get-application-builder.tsx
index 2ffd69c66c..0e249bd79b 100644
--- a/src/renderer/components/test-utils/get-application-builder.tsx
+++ b/src/renderer/components/test-utils/get-application-builder.tsx
@@ -66,6 +66,7 @@ import closeAllWindowsInjectable from "../../../main/start-main-application/lens
 import type { LensWindow } from "../../../main/start-main-application/lens-window/application-window/create-lens-window.injectable";
 import type { FakeExtensionOptions } from "./get-extension-fake";
 import { getExtensionFakeForMain, getExtensionFakeForRenderer } from "./get-extension-fake";
+import namespaceApiInjectable from "../../../common/k8s-api/endpoints/namespace.api.injectable";
 
 type Callback = (di: DiContainer) => void | Promise<void>;
 
@@ -247,8 +248,8 @@ export const getApplicationBuilder = () => {
 
   let applicationHasStarted = false;
 
-  const namespaces = observable.array<string>();
-  const selectedNamespaces = observable.array<string>();
+  const namespaces = observable.set<string>();
+  const selectedNamespaces = observable.set<string>();
 
   const builder: ApplicationBuilder = {
     mainDi,
@@ -311,8 +312,8 @@ export const getApplicationBuilder = () => {
       },
     },
     namespaces: {
-      add: action((namespace) => namespaces.push(namespace)),
-      select: action((namespace) => selectedNamespaces.push(namespace)),
+      add: action((namespace) => namespaces.add(namespace)),
+      select: action((namespace) => selectedNamespaces.add(namespace)),
     },
     applicationMenu: {
       click: (path: string) => {
@@ -476,22 +477,26 @@ export const getApplicationBuilder = () => {
           computed(() => catalogEntityFromCluster(clusterStub)),
         );
 
+        windowDi.override(hostedClusterIdInjectable, () => "irrelevant-hosted-cluster-id");
+
         // TODO: Figure out a way to remove this stub.
         const namespaceStoreStub = {
           isLoaded: true,
-          contextNamespaces: selectedNamespaces,
-          allowedNamespaces: namespaces,
-          contextItems: [],
-          api: {
-            kind: "Namespace",
+          get contextNamespaces() {
+            return Array.from(selectedNamespaces);
           },
-          items: [],
+          get allowedNamespaces() {
+            return Array.from(namespaces);
+          },
+          contextItems: [],
+          api: windowDi.inject(namespaceApiInjectable),
+          items: observable.array(),
           selectNamespaces: () => {},
           getByPath: () => undefined,
           pickOnlySelected: () => [],
           isSelectedAll: () => false,
           getTotalCount: () => 0,
-        } as unknown as NamespaceStore;
+        } as Partial<NamespaceStore> as NamespaceStore;
 
         const clusterFrameContextFake = new ClusterFrameContext(
           clusterStub,
@@ -503,7 +508,6 @@ export const getApplicationBuilder = () => {
 
         windowDi.override(namespaceStoreInjectable, () => namespaceStoreStub);
         windowDi.override(hostedClusterInjectable, () => clusterStub);
-        windowDi.override(hostedClusterIdInjectable, () => "irrelevant-hosted-cluster-id");
         windowDi.override(clusterFrameContextInjectable, () => clusterFrameContextFake);
 
         // Todo: get rid of global state.