Fix ResourceApplier to not use sync methods within an async context

- Add cleanup for apply all
- Cleanup files in kubectlCmdAll even on success
- Make ResourceApplier injectable
- Write some basic tests
- Remove only use of logger.silly

Signed-off-by: Sebastian Malton <sebastian@malton.name>

src/common/__tests__/cluster-store.test.ts

@@ -94,10 +94,12 @@ describe("cluster-store", () => {
 
     mainDi.permitSideEffects(getConfigurationFileModelInjectable);
     mainDi.permitSideEffects(appVersionInjectable);
-    mainDi.permitSideEffects(clusterStoreInjectable);
-    mainDi.permitSideEffects(fsInjectable);
 
     mainDi.unoverride(clusterStoreInjectable);
+    mainDi.permitSideEffects(clusterStoreInjectable);
+
+    mainDi.unoverride(fsInjectable);
+    mainDi.permitSideEffects(fsInjectable);
   });
 
   afterEach(() => {

src/common/__tests__/hotbar-store.test.ts

@@ -95,7 +95,6 @@ describe("HotbarStore", () => {
       debug: jest.fn(),
       error: jest.fn(),
       info: jest.fn(),
-      silly: jest.fn(),
     };
 
     di.override(loggerInjectable, () => loggerMock);

src/common/cluster/authorization-review.injectable.ts

@@ -13,7 +13,7 @@ export type CanI = (resourceAttributes: V1ResourceAttributes) => Promise<boolean
 /**
  * @param proxyConfig This config's `currentContext` field must be set, and will be used as the target cluster
    */
-export function authorizationReview(proxyConfig: KubeConfig): CanI {
+function createAuthorizationReview(proxyConfig: KubeConfig): CanI {
   const api = proxyConfig.makeApiClient(AuthorizationV1Api);
 
   /**
@@ -38,9 +38,9 @@ export function authorizationReview(proxyConfig: KubeConfig): CanI {
   };
 }
 
-const authorizationReviewInjectable = getInjectable({
-  id: "authorization-review",
-  instantiate: () => authorizationReview,
+const createAuthorizationReviewInjectable = getInjectable({
+  id: "create-authorization-review",
+  instantiate: () => createAuthorizationReview,
 });
 
-export default authorizationReviewInjectable;
+export default createAuthorizationReviewInjectable;

src/common/cluster/cluster.ts

@@ -581,7 +581,6 @@ export class Cluster implements ClusterModel, ClusterState {
    * @param state cluster state
    */
   pushState(state = this.getState()) {
-    this.dependencies.logger.silly(`[CLUSTER]: push-state`, state);
     broadcastMessage("cluster:state", this.id, state);
   }
 

src/common/cluster/list-namespaces.injectable.ts

@@ -9,7 +9,7 @@ import { isDefined } from "../utils";
 
 export type ListNamespaces = () => Promise<string[]>;
 
-export function listNamespaces(config: KubeConfig): ListNamespaces {
+function createListNamespaces(config: KubeConfig): ListNamespaces {
   const coreApi = config.makeApiClient(CoreV1Api);
 
   return async () => {
@@ -21,9 +21,9 @@ export function listNamespaces(config: KubeConfig): ListNamespaces {
   };
 }
 
-const listNamespacesInjectable = getInjectable({
+const createListNamespacesInjectable = getInjectable({
   id: "list-namespaces",
-  instantiate: () => listNamespaces,
+  instantiate: () => createListNamespaces,
 });
 
-export default listNamespacesInjectable;
+export default createListNamespacesInjectable;

src/common/fs/remove.injectable.ts

@@ -0,0 +1,15 @@
+/**
+ * Copyright (c) OpenLens Authors. All rights reserved.
+ * Licensed under MIT License. See LICENSE in root directory for more information.
+ */
+import { getInjectable } from "@ogre-tools/injectable";
+import fsInjectable from "./fs.injectable";
+
+export type RemoveDir = (path: string) => Promise<void>;
+
+const removeDirInjectable = getInjectable({
+  instantiate: (di): RemoveDir => di.inject(fsInjectable).remove,
+  id: "remove-dir",
+});
+
+export default removeDirInjectable;

src/common/fs/temp-dir.injectable.ts

@@ -0,0 +1,19 @@
+/**
+ * Copyright (c) OpenLens Authors. All rights reserved.
+ * Licensed under MIT License. See LICENSE in root directory for more information.
+ */
+import { getInjectable } from "@ogre-tools/injectable";
+import tempy from "tempy";
+
+export interface TempDirOptions {
+  prefix?: string;
+}
+
+export type TempDir = (opts?: TempDirOptions) => string;
+
+const tempDirInjectable = getInjectable({
+  id: "temp-dir",
+  instantiate: (): TempDir => opts => tempy.directory(opts),
+});
+
+export default tempDirInjectable;

src/common/fs/temp-file.injectable.ts

@@ -0,0 +1,23 @@
+/**
+ * Copyright (c) OpenLens Authors. All rights reserved.
+ * Licensed under MIT License. See LICENSE in root directory for more information.
+ */
+import tempy from "tempy";
+import { getInjectable } from "@ogre-tools/injectable";
+import type { MergeExclusive } from "type-fest";
+
+export type TempFileOptions = MergeExclusive<{
+  name?: string;
+}, {
+  extension?: string;
+}>;
+
+export type TempFile = (opts?: TempFileOptions) => string;
+
+const tempFileInjectable = getInjectable({
+  id: "temp-file",
+  instantiate: (): TempFile => (opts) => tempy.file(opts),
+});
+
+export default tempFileInjectable;
+

src/common/fs/unlink.injectable.ts

@@ -0,0 +1,16 @@
+/**
+ * Copyright (c) OpenLens Authors. All rights reserved.
+ * Licensed under MIT License. See LICENSE in root directory for more information.
+ */
+
+import { getInjectable } from "@ogre-tools/injectable";
+import fsInjectable from "./fs.injectable";
+
+export type Unlink = (path: string) => Promise<void>;
+
+const unlinkInjectable = getInjectable({
+  instantiate: (di): Unlink => di.inject(fsInjectable).unlink,
+  id: "unlink",
+});
+
+export default unlinkInjectable;

src/common/fs/write-file.injectable.ts

@@ -6,13 +6,15 @@ import { getInjectable } from "@ogre-tools/injectable";
 import path from "path";
 import fsInjectable from "./fs.injectable";
 
+export type WriteFile = (filePath: string, data: string | Buffer) => Promise<void>;
+
 const writeFileInjectable = getInjectable({
   id: "write-file",
 
-  instantiate: (di) => {
+  instantiate: (di): WriteFile => {
     const { writeFile, ensureDir } = di.inject(fsInjectable);
 
-    return async (filePath: string, content: string | Buffer) => {
+    return async (filePath, content) => {
       await ensureDir(path.dirname(filePath), { mode: 0o755 });
 
       await writeFile(filePath, content, {

src/common/k8s/resource-stack.ts

@@ -5,7 +5,6 @@
 import fse from "fs-extra";
 import path from "path";
 import hb from "handlebars";
-import { ResourceApplier } from "../../main/resource-applier";
 import type { KubernetesCluster } from "../catalog-entities";
 import logger from "../../main/logger";
 import { app } from "electron";
@@ -13,6 +12,10 @@ import { ClusterStore } from "../cluster-store/cluster-store";
 import yaml from "js-yaml";
 import { productName } from "../vars";
 import { requestKubectlApplyAll, requestKubectlDeleteAll } from "../../renderer/ipc";
+import { asLegacyGlobalFunctionForExtensionApi } from "../../extensions/as-legacy-globals-for-extension-api/as-legacy-global-function-for-extension-api";
+import createK8sResourceApplierInjectable from "../../main/k8s/resource-applier/create.injectable";
+
+const createK8sResourceApplier = asLegacyGlobalFunctionForExtensionApi(createK8sResourceApplierInjectable);
 
 export class ResourceStack {
   constructor(protected cluster: KubernetesCluster, protected name: string) {}
@@ -51,7 +54,7 @@ export class ResourceStack {
     kubectlArgs = this.appendKubectlArgs(kubectlArgs);
 
     if (app) {
-      return await new ResourceApplier(clusterModel).kubectlApplyAll(resources, kubectlArgs);
+      return await createK8sResourceApplier(clusterModel).kubectlApplyAll(resources, kubectlArgs);
     } else {
       const response = await requestKubectlApplyAll(this.cluster.getId(), resources, kubectlArgs);
 
@@ -75,7 +78,7 @@ export class ResourceStack {
     kubectlArgs = this.appendKubectlArgs(kubectlArgs);
 
     if (app) {
-      return await new ResourceApplier(clusterModel).kubectlDeleteAll(resources, kubectlArgs);
+      return await createK8sResourceApplier(clusterModel).kubectlDeleteAll(resources, kubectlArgs);
     } else {
       const response = await requestKubectlDeleteAll(this.cluster.getId(), resources, kubectlArgs);
 

src/common/logger.ts

@@ -15,7 +15,6 @@ export interface Logger {
   error: (message: string, ...args: any) => void;
   debug: (message: string, ...args: any) => void;
   warn: (message: string, ...args: any) => void;
-  silly: (message: string, ...args: any) => void;
 }
 
 const logLevel = process.env.LOG_LEVEL

src/main/__test__/cluster.test.ts

@@ -13,8 +13,6 @@ import { Kubectl } from "../kubectl/kubectl";
 import { getDiForUnitTesting } from "../getDiForUnitTesting";
 import type { CreateCluster } from "../../common/cluster/create-cluster-injection-token";
 import { createClusterInjectionToken } from "../../common/cluster/create-cluster-injection-token";
-import authorizationReviewInjectable from "../../common/cluster/authorization-review.injectable";
-import listNamespacesInjectable from "../../common/cluster/list-namespaces.injectable";
 import createContextHandlerInjectable from "../context-handler/create-context-handler.injectable";
 import type { ClusterContextHandler } from "../context-handler/context-handler";
 import { parse } from "url";
@@ -23,6 +21,10 @@ import directoryForTempInjectable from "../../common/app-paths/directory-for-tem
 import normalizedPlatformInjectable from "../../common/vars/normalized-platform.injectable";
 import kubectlBinaryNameInjectable from "../kubectl/binary-name.injectable";
 import kubectlDownloadingNormalizedArchInjectable from "../kubectl/normalized-arch.injectable";
+import createAuthorizationReviewInjectable from "../../common/cluster/authorization-review.injectable";
+import createListNamespacesInjectable from "../../common/cluster/list-namespaces.injectable";
+import { readFileSync } from "fs-extra";
+import readFileSyncInjectable from "../../common/fs/read-file-sync.injectable";
 
 console = new Console(process.stdout, process.stderr); // fix mockFS
 
@@ -41,8 +43,8 @@ describe("create clusters", () => {
     di.override(kubectlBinaryNameInjectable, () => "kubectl");
     di.override(kubectlDownloadingNormalizedArchInjectable, () => "amd64");
     di.override(normalizedPlatformInjectable, () => "darwin");
-    di.override(authorizationReviewInjectable, () => () => () => Promise.resolve(true));
-    di.override(listNamespacesInjectable, () => () => () => Promise.resolve([ "default" ]));
+    di.override(createAuthorizationReviewInjectable, () => () => () => Promise.resolve(true));
+    di.override(createListNamespacesInjectable, () => () => () => Promise.resolve([ "default" ]));
     di.override(createContextHandlerInjectable, () => (cluster) => ({
       restartServer: jest.fn(),
       stopServer: jest.fn(),
@@ -54,6 +56,7 @@ describe("create clusters", () => {
       setupPrometheus: jest.fn(),
       ensureServer: jest.fn(),
     } as ClusterContextHandler));
+    di.override(readFileSyncInjectable, () => readFileSync); // TODO: don't bypass injectables
 
     createCluster = di.inject(createClusterInjectionToken);
 

src/main/__test__/kube-auth-proxy.test.ts

@@ -16,7 +16,6 @@ jest.mock("winston", () => ({
     splat: jest.fn(),
   },
   createLogger: jest.fn().mockReturnValue({
-    silly: jest.fn(),
     debug: jest.fn(),
     log: jest.fn(),
     info: jest.fn(),
@@ -60,6 +59,8 @@ import directoryForTempInjectable from "../../common/app-paths/directory-for-tem
 import normalizedPlatformInjectable from "../../common/vars/normalized-platform.injectable";
 import kubectlBinaryNameInjectable from "../kubectl/binary-name.injectable";
 import kubectlDownloadingNormalizedArchInjectable from "../kubectl/normalized-arch.injectable";
+import readFileSyncInjectable from "../../common/fs/read-file-sync.injectable";
+import { readFileSync } from "fs";
 
 console = new Console(stdout, stderr);
 
@@ -116,8 +117,8 @@ describe("kube auth proxy tests", () => {
 
     mockFs(mockMinikubeConfig);
 
+    di.override(readFileSyncInjectable, () => readFileSync); // TODO: don't bypass injectables
     createCluster = di.inject(createClusterInjectionToken);
-
     createKubeAuthProxy = di.inject(createKubeAuthProxyInjectable);
   });
 

src/main/__test__/kubeconfig-manager.test.ts

@@ -23,6 +23,7 @@ import directoryForUserDataInjectable from "../../common/app-paths/directory-for
 import normalizedPlatformInjectable from "../../common/vars/normalized-platform.injectable";
 import kubectlBinaryNameInjectable from "../kubectl/binary-name.injectable";
 import kubectlDownloadingNormalizedArchInjectable from "../kubectl/normalized-arch.injectable";
+import readFileSyncInjectable from "../../common/fs/read-file-sync.injectable";
 
 console = new Console(process.stdout, process.stderr); // fix mockFS
 
@@ -48,7 +49,6 @@ describe("kubeconfig manager tests", () => {
       debug: jest.fn(),
       error: jest.fn(),
       info: jest.fn(),
-      silly: jest.fn(),
     };
 
     di.override(loggerInjectable, () => loggerMock);
@@ -89,6 +89,7 @@ describe("kubeconfig manager tests", () => {
       ensureServer: jest.fn(),
     }));
 
+    di.override(readFileSyncInjectable, () => fse.readFileSync); // TODO: don't bypass injectables
     const createCluster = di.inject(createClusterInjectionToken);
 
     createKubeconfigManager = di.inject(createKubeconfigManagerInjectable);

src/main/catalog-sources/__test__/kubeconfig-sync.test.ts

@@ -55,7 +55,9 @@ describe("kubeconfig-sync.source tests", () => {
     di.override(kubectlDownloadingNormalizedArchInjectable, () => "amd64");
     di.override(normalizedPlatformInjectable, () => "darwin");
 
+    di.unoverride(fsInjectable);
     di.permitSideEffects(fsInjectable);
+
     di.unoverride(clusterStoreInjectable);
     di.permitSideEffects(clusterStoreInjectable);
     di.permitSideEffects(getConfigurationFileModelInjectable);

src/main/child-process/exec-file.injectable.ts

@@ -0,0 +1,16 @@
+/**
+ * Copyright (c) OpenLens Authors. All rights reserved.
+ * Licensed under MIT License. See LICENSE in root directory for more information.
+ */
+import { getInjectable } from "@ogre-tools/injectable";
+import { execFile } from "child_process";
+import { promisify } from "util";
+
+export type ExecFile = typeof execFile["__promisify__"];
+
+const execFileInjectable = getInjectable({
+  id: "exec-file",
+  instantiate: (): ExecFile => promisify(execFile),
+});
+
+export default execFileInjectable;

src/main/create-cluster/create-cluster.injectable.ts

@@ -10,8 +10,8 @@ import createKubeconfigManagerInjectable from "../kubeconfig-manager/create-kube
 import createKubectlInjectable from "../kubectl/create-kubectl.injectable";
 import createContextHandlerInjectable from "../context-handler/create-context-handler.injectable";
 import { createClusterInjectionToken } from "../../common/cluster/create-cluster-injection-token";
-import authorizationReviewInjectable from "../../common/cluster/authorization-review.injectable";
-import listNamespacesInjectable from "../../common/cluster/list-namespaces.injectable";
+import createAuthorizationReviewInjectable from "../../common/cluster/authorization-review.injectable";
+import createListNamespacesInjectable from "../../common/cluster/list-namespaces.injectable";
 import loggerInjectable from "../../common/logger.injectable";
 import detectorRegistryInjectable from "../cluster-detectors/detector-registry.injectable";
 import createVersionDetectorInjectable from "../cluster-detectors/create-version-detector.injectable";
@@ -25,8 +25,8 @@ const createClusterInjectable = getInjectable({
       createKubeconfigManager: di.inject(createKubeconfigManagerInjectable),
       createKubectl: di.inject(createKubectlInjectable),
       createContextHandler: di.inject(createContextHandlerInjectable),
-      createAuthorizationReview: di.inject(authorizationReviewInjectable),
-      createListNamespaces: di.inject(listNamespacesInjectable),
+      createAuthorizationReview: di.inject(createAuthorizationReviewInjectable),
+      createListNamespaces: di.inject(createListNamespacesInjectable),
       logger: di.inject(loggerInjectable),
       detectorRegistry: di.inject(detectorRegistryInjectable),
       createVersionDetector: di.inject(createVersionDetectorInjectable),

src/main/electron-app/runnables/setup-ipc-main-handlers/setup-ipc-main-handlers.injectable.ts

@@ -14,17 +14,14 @@ import { onLoadOfApplicationInjectionToken } from "../../../start-main-applicati
 import operatingSystemThemeInjectable from "../../../theme/operating-system-theme.injectable";
 import catalogEntityRegistryInjectable from "../../../catalog/entity-registry.injectable";
 import askUserForFilePathsInjectable from "../../../ipc/ask-user-for-file-paths.injectable";
+import createK8sResourceApplierInjectable from "../../../k8s/resource-applier/create.injectable";
 
 const setupIpcMainHandlersInjectable = getInjectable({
   id: "setup-ipc-main-handlers",
 
   instantiate: (di) => {
     const logger = di.inject(loggerInjectable);
-
-    const directoryForLensLocalStorage = di.inject(
-      directoryForLensLocalStorageInjectable,
-    );
-
+    const directoryForLensLocalStorage = di.inject(directoryForLensLocalStorageInjectable);
     const clusterManager = di.inject(clusterManagerInjectable);
     const applicationMenuItems = di.inject(applicationMenuItemsInjectable);
     const getAbsolutePath = di.inject(getAbsolutePathInjectable);
@@ -32,6 +29,7 @@ const setupIpcMainHandlersInjectable = getInjectable({
     const clusterStore = di.inject(clusterStoreInjectable);
     const operatingSystemTheme = di.inject(operatingSystemThemeInjectable);
     const askUserForFilePaths = di.inject(askUserForFilePathsInjectable);
+    const createK8sResourceApplier = di.inject(createK8sResourceApplierInjectable);
 
     return {
       run: () => {
@@ -46,6 +44,7 @@ const setupIpcMainHandlersInjectable = getInjectable({
           clusterStore,
           operatingSystemTheme,
           askUserForFilePaths,
+          createK8sResourceApplier,
         });
       },
     };

src/main/electron-app/runnables/setup-ipc-main-handlers/setup-ipc-main-handlers.ts

@@ -13,7 +13,6 @@ import { broadcastMainChannel, broadcastMessage, ipcMainHandle, ipcMainOn } from
 import type { CatalogEntityRegistry } from "../../../catalog";
 import { pushCatalogToRenderer } from "../../../catalog-pusher";
 import type { ClusterManager } from "../../../cluster-manager";
-import { ResourceApplier } from "../../../resource-applier";
 import { remove } from "fs-extra";
 import type { IComputedValue } from "mobx";
 import type { GetAbsolutePath } from "../../../../common/path/get-absolute-path.injectable";
@@ -24,6 +23,7 @@ import { openFilePickingDialogChannel } from "../../../../common/ipc/dialog";
 import { getNativeThemeChannel } from "../../../../common/ipc/native-theme";
 import type { Theme } from "../../../theme/operating-system-theme-state.injectable";
 import type { AskUserForFilePaths } from "../../../ipc/ask-user-for-file-paths.injectable";
+import type { CreateK8sResourceApplier } from "../../../k8s/resource-applier/create.injectable";
 
 interface Dependencies {
   directoryForLensLocalStorage: string;
@@ -34,9 +34,20 @@ interface Dependencies {
   clusterStore: ClusterStore;
   operatingSystemTheme: IComputedValue<Theme>;
   askUserForFilePaths: AskUserForFilePaths;
+  createK8sResourceApplier: CreateK8sResourceApplier;
 }
 
-export const setupIpcMainHandlers = ({ applicationMenuItems, directoryForLensLocalStorage, getAbsolutePath, clusterManager, catalogEntityRegistry, clusterStore, operatingSystemTheme, askUserForFilePaths }: Dependencies) => {
+export function setupIpcMainHandlers({
+  applicationMenuItems,
+  directoryForLensLocalStorage,
+  getAbsolutePath,
+  clusterManager,
+  catalogEntityRegistry,
+  clusterStore,
+  operatingSystemTheme,
+  askUserForFilePaths,
+  createK8sResourceApplier,
+}: Dependencies) {
   ipcMainHandle(clusterActivateHandler, (event, clusterId: ClusterId, force = false) => {
     return ClusterStore.getInstance()
       .getById(clusterId)
@@ -113,10 +124,8 @@ export const setupIpcMainHandlers = ({ applicationMenuItems, directoryForLensLoc
     const cluster = ClusterStore.getInstance().getById(clusterId);
 
     if (cluster) {
-      const applier = new ResourceApplier(cluster);
-
       try {
-        const stdout = await applier.kubectlApplyAll(resources, extraArgs);
+        const stdout = await createK8sResourceApplier(cluster).kubectlApplyAll(resources, extraArgs);
 
         return { stdout };
       } catch (error: any) {
@@ -132,10 +141,8 @@ export const setupIpcMainHandlers = ({ applicationMenuItems, directoryForLensLoc
     const cluster = ClusterStore.getInstance().getById(clusterId);
 
     if (cluster) {
-      const applier = new ResourceApplier(cluster);
-
       try {
-        const stdout = await applier.kubectlDeleteAll(resources, extraArgs);
+        const stdout = await createK8sResourceApplier(cluster).kubectlDeleteAll(resources, extraArgs);
 
         return { stdout };
       } catch (error: any) {
@@ -172,4 +179,4 @@ export const setupIpcMainHandlers = ({ applicationMenuItems, directoryForLensLoc
   });
 
   clusterStore.provideInitialFromMain();
-};
+}

src/main/k8s/resource-applier/__tests__/applier.test.ts

@@ -0,0 +1,250 @@
+/**
+ * Copyright (c) OpenLens Authors. All rights reserved.
+ * Licensed under MIT License. See LICENSE in root directory for more information.
+ */
+
+import type { DiContainer } from "@ogre-tools/injectable";
+import type { ChildProcess } from "child_process";
+import path from "path";
+import directoryForKubeConfigsInjectable from "../../../../common/app-paths/directory-for-kube-configs/directory-for-kube-configs.injectable";
+import createAuthorizationReviewInjectable from "../../../../common/cluster/authorization-review.injectable";
+import createListNamespacesInjectable from "../../../../common/cluster/list-namespaces.injectable";
+import readFileSyncInjectable from "../../../../common/fs/read-file-sync.injectable";
+import type { RemoveDir } from "../../../../common/fs/remove.injectable";
+import removeDirInjectable from "../../../../common/fs/remove.injectable";
+import tempDirInjectable from "../../../../common/fs/temp-dir.injectable";
+import tempFileInjectable from "../../../../common/fs/temp-file.injectable";
+import type { Unlink } from "../../../../common/fs/unlink.injectable";
+import unlinkInjectable from "../../../../common/fs/unlink.injectable";
+import type { WriteFile } from "../../../../common/fs/write-file.injectable";
+import writeFileInjectable from "../../../../common/fs/write-file.injectable";
+import { expectInSetOnce } from "../../../../test-utils/expects";
+import type { ExecFile } from "../../../child-process/exec-file.injectable";
+import execFileInjectable from "../../../child-process/exec-file.injectable";
+import createContextHandlerInjectable from "../../../context-handler/create-context-handler.injectable";
+import createClusterInjectable from "../../../create-cluster/create-cluster.injectable";
+import { getDiForUnitTesting } from "../../../getDiForUnitTesting";
+import createKubeconfigManagerInjectable from "../../../kubeconfig-manager/create-kubeconfig-manager.injectable";
+import type { KubeconfigManager } from "../../../kubeconfig-manager/kubeconfig-manager";
+import createKubectlInjectable from "../../../kubectl/create-kubectl.injectable";
+import type { Kubectl } from "../../../kubectl/kubectl";
+import type { K8sResourceApplier } from "../applier";
+import createK8sResourceApplierInjectable from "../create.injectable";
+
+describe("ResourceApplier", () => {
+  let di: DiContainer;
+  let writeFile: jest.MockedFunction<WriteFile>;
+  let execFile: jest.MockedFunction<ExecFile>;
+  let unlink: jest.MockedFunction<Unlink>;
+  let removeDir: jest.MockedFunction<RemoveDir>;
+  let resourceApplier: K8sResourceApplier;
+
+  beforeEach(() => {
+    di = getDiForUnitTesting({ doGeneralOverrides: true });
+
+    di.override(createKubectlInjectable, () => jest.fn().mockImplementation((): Partial<Kubectl> => ({
+      ensureKubectl: jest.fn(),
+      getPath: () => Promise.resolve("some-path"),
+    })));
+    di.override(directoryForKubeConfigsInjectable, () => "some/path");
+    di.override(createKubeconfigManagerInjectable, () => jest.fn().mockImplementation((): Partial<KubeconfigManager> => ({
+      getPath: () => Promise.resolve("some-proxy-path"),
+    })));
+    di.override(createContextHandlerInjectable, () => jest.fn());
+    di.override(createAuthorizationReviewInjectable, () => jest.fn());
+    di.override(createListNamespacesInjectable, () => jest.fn());
+    di.override(writeFileInjectable, () => writeFile = jest.fn());
+    di.override(execFileInjectable, () => execFile = jest.fn());
+    di.override(unlinkInjectable, () => unlink = jest.fn());
+    di.override(removeDirInjectable, () => removeDir = jest.fn());
+    di.override(tempDirInjectable, () => jest.fn().mockImplementation(() => "some/temp/dir"));
+    di.override(tempFileInjectable, () => jest.fn().mockImplementation(() => "some/temp/file"));
+    di.override(readFileSyncInjectable, () => jest.fn().mockImplementation(() => {
+      return JSON.stringify({
+        clusters: [{
+          name: "some-cluster",
+          cluster: {
+            server: "some-server-url",
+          },
+        }],
+        users: [{
+          name: "some-user",
+        }],
+        contexts: [{
+          name: "some-context",
+          context: {
+            user: "some-user",
+            cluster: "some-cluster",
+          },
+        }],
+      });
+    }));
+
+    const createK8sResourceApplier = di.inject(createK8sResourceApplierInjectable);
+    const createCluster = di.inject(createClusterInjectable);
+
+    resourceApplier = createK8sResourceApplier(createCluster({
+      contextName: "some-context",
+      id: "some-id",
+      kubeConfigPath: "some/path/config",
+    }));
+  });
+
+  describe(".apply()", () => {
+    it("should call unlink, if writeFile rejects", async () => {
+      writeFile.mockImplementation(() => {
+        throw new Error("irrelavent");
+      });
+
+      await expect(resourceApplier.apply({})).rejects.toBeTruthy();
+      expect(unlink).toBeCalledWith("some/temp/file");
+    });
+
+    it("should call unlink, if execFile rejects", async () => {
+      execFile.mockImplementation(() => {
+        throw new Error("irrelavent");
+      });
+
+      await expect(resourceApplier.apply({})).rejects.toBeTruthy();
+      expect(unlink).toBeCalledWith("some/temp/file");
+    });
+
+    it("should call unlink, if everything passes", async () => {
+      execFile.mockImplementation(() => Object.assign(
+        Promise.resolve({
+          stdout: "I am some output",
+          stderr: "",
+        }),
+        {
+          child: {} as ChildProcess,
+        },
+      ));
+
+      await expect(resourceApplier.apply({})).resolves.toBeTruthy();
+      expect(unlink).toBeCalledWith("some/temp/file");
+    });
+
+    it("should return the stdout of execFile", async () => {
+      execFile.mockImplementation(() => Object.assign(
+        Promise.resolve({
+          stdout: "I am some output",
+          stderr: "",
+        }),
+        {
+          child: {} as ChildProcess,
+        },
+      ));
+
+      expect(await resourceApplier.apply({})).toBe("I am some output");
+    });
+
+    it("should build up a correct set of arguments", async () => {
+      execFile.mockImplementation((path, args) => {
+        expect(args).toEqual([
+          "apply",
+          "--kubeconfig",
+          "some-proxy-path",
+          "-o",
+          "json",
+          "-f",
+          "some/temp/file",
+        ]);
+
+        return Object.assign(
+          Promise.resolve({
+            stdout: "I am some output",
+            stderr: "",
+          }),
+          {
+            child: {} as ChildProcess,
+          },
+        );
+      });
+
+      await resourceApplier.apply({});
+    });
+  });
+
+  describe(".kubectlApplyAll()", () => {
+    it("should call removeDir, if any writeFile rejects", async () => {
+      let count = 0;
+
+      writeFile.mockImplementation(async () => {
+        count += 1;
+
+        if (count === 2) {
+          throw new Error("irrelavent");
+        }
+      });
+
+      await expect(resourceApplier.kubectlApplyAll(["foo", "bar"])).rejects.toBeTruthy();
+      expect(removeDir).toBeCalledWith("some/temp/dir");
+    });
+
+    it("should call removeDir, if any execFile rejects", async () => {
+      execFile.mockImplementation(() => {
+        throw new Error("irrelavent");
+      });
+
+      await expect(resourceApplier.kubectlApplyAll(["foo", "bar"])).rejects.toBeTruthy();
+      expect(removeDir).toBeCalledWith("some/temp/dir");
+    });
+
+    it("should call writeFile for each resource", async () => {
+      const resources = new Set(["foo", "bar"]);
+      const onlyOnce = expectInSetOnce(resources);
+
+      writeFile.mockImplementation(async (filePath, contents) => {
+        if (path.sep === "/") {
+          expect(filePath).toMatch(/^some\/temp\/dir\/[0-9]+.yaml$/);
+        } else {
+          expect(filePath).toMatch(/^some\\temp\\dir\\[0-9]+.yaml$/);
+        }
+        onlyOnce(contents);
+      });
+
+      execFile.mockImplementation(() => {
+        return Object.assign(
+          Promise.resolve({
+            stdout: "I am some output",
+            stderr: "",
+          }),
+          {
+            child: {} as ChildProcess,
+          },
+        );
+      });
+
+      await expect(resourceApplier.kubectlApplyAll([...resources])).resolves.toBeTruthy();
+      expect(removeDir).toBeCalledWith("some/temp/dir");
+      onlyOnce.allSatisfied();
+    });
+
+    it("should use resonable arguments", async () => {
+      execFile.mockImplementation((path, args) => {
+        expect(args).toEqual([
+          "apply",
+          "--kubeconfig",
+          "some-proxy-path",
+          "-o",
+          "json",
+          "-f",
+          "some/temp/dir",
+        ]);
+
+        return Object.assign(
+          Promise.resolve({
+            stdout: "I am some output",
+            stderr: "",
+          }),
+          {
+            child: {} as ChildProcess,
+          },
+        );
+      });
+
+      await expect(resourceApplier.kubectlApplyAll(["foo", "bar"])).resolves.toBeTruthy();
+      expect(removeDir).toBeCalledWith("some/temp/dir");
+    });
+  });
+});

src/main/k8s/resource-applier/applier.ts

@@ -0,0 +1,179 @@
+/**
+ * Copyright (c) OpenLens Authors. All rights reserved.
+ * Licensed under MIT License. See LICENSE in root directory for more information.
+ */
+
+import type { Cluster } from "../../../common/cluster/cluster";
+import type { KubernetesObject } from "@kubernetes/client-node";
+import * as yaml from "js-yaml";
+import path from "path";
+import { appEventBus } from "../../../common/app-event-bus/event-bus";
+import type { Patch } from "rfc6902";
+import type { ExecFile } from "../../child-process/exec-file.injectable";
+import type { WriteFile } from "../../../common/fs/write-file.injectable";
+import type { Unlink } from "../../../common/fs/unlink.injectable";
+import type { RemoveDir } from "../../../common/fs/remove.injectable";
+import type { PartialDeep } from "type-fest";
+import type { KubeObject } from "../../../common/k8s-api/kube-object";
+import type { Logger } from "../../../common/logger";
+import type { TempFile } from "../../../common/fs/temp-file.injectable";
+import type { TempDir } from "../../../common/fs/temp-dir.injectable";
+import { hasTypedProperty, isObject, isString } from "../../../common/utils";
+
+export interface ResourceApplierDependencies {
+  execFile: ExecFile;
+  writeFile: WriteFile;
+  unlink: Unlink;
+  removeDir: RemoveDir;
+  tempFile: TempFile;
+  tempDir: TempDir;
+  readonly logger: Logger;
+}
+
+export interface K8sResourceApplier {
+  patch(name: string, kind: string, patch: Patch, ns?: string): Promise<string>;
+  apply(resource: PartialDeep<KubeObject>): Promise<string>;
+  /**
+   * @deprecated This function is only really for KubeObject's
+   */
+  apply(resource: any): Promise<string>;
+  kubectlApplyAll(resources: string[], extraArgs?: string[]): Promise<string>;
+  kubectlDeleteAll(resources: string[], extraArgs?: string[]): Promise<string>;
+}
+
+export class ResourceApplier implements K8sResourceApplier {
+  constructor(protected readonly dependencies: ResourceApplierDependencies, protected readonly cluster: Cluster) {}
+
+  /**
+   * Patch a kube resource's manifest, throwing any error that occurs.
+   * @param name The name of the kube resource
+   * @param kind The kind of the kube resource
+   * @param patch The list of JSON operations
+   * @param ns The optional namespace of the kube resource
+   */
+  async patch(name: string, kind: string, patch: Patch, ns?: string): Promise<string> {
+    appEventBus.emit({ name: "resource", action: "patch" });
+
+    const kubectl = await this.cluster.ensureKubectl();
+    const kubectlPath = await kubectl.getPath();
+    const proxyKubeconfigPath = await this.cluster.getProxyKubeconfigPath();
+    const args = [
+      "--kubeconfig", proxyKubeconfigPath,
+      "patch",
+      kind,
+      name,
+    ];
+
+    if (ns) {
+      args.push("--namespace", ns);
+    }
+
+    args.push(
+      "--type", "json",
+      "--patch", JSON.stringify(patch),
+      "-o", "json",
+    );
+
+    try {
+      const { stdout } = await this.dependencies.execFile(kubectlPath, args);
+
+      return stdout;
+    } catch (error) {
+      if (isObject(error) && hasTypedProperty(error, "stderr", isString)) {
+        throw error.stderr;
+      }
+
+      throw String(error);
+    }
+  }
+
+  async apply(resource: KubernetesObject | any): Promise<string> {
+    appEventBus.emit({ name: "resource", action: "apply" });
+
+    const content = yaml.dump(sanitizeObject(resource));
+    const kubectl = await this.cluster.ensureKubectl();
+    const kubectlPath = await kubectl.getPath();
+    const proxyKubeconfigPath = await this.cluster.getProxyKubeconfigPath();
+    const fileName = this.dependencies.tempFile({ name: "resource.yaml" });
+
+    const args = [
+      "apply",
+      "--kubeconfig", proxyKubeconfigPath,
+      "-o", "json",
+      "-f", fileName,
+    ];
+
+    this.dependencies.logger.debug(`[RESOURCE-APPLIER]: shooting manifests with: ${kubectlPath}`, { args });
+
+    const execEnv = { ...process.env };
+    const httpsProxy = this.cluster.preferences?.httpsProxy;
+
+    if (httpsProxy) {
+      execEnv.HTTPS_PROXY = httpsProxy;
+    }
+
+    try {
+      await this.dependencies.writeFile(fileName, content);
+      const { stdout } = await this.dependencies.execFile(kubectlPath, args, { env: execEnv });
+
+      return stdout;
+    } catch (error) {
+      if (isObject(error) && hasTypedProperty(error, "stderr", isString)) {
+        throw error.stderr;
+      }
+
+      throw String(error);
+    } finally {
+      await this.dependencies.unlink(fileName);
+    }
+  }
+
+  public async kubectlApplyAll(resources: string[], extraArgs = ["-o", "json"]): Promise<string> {
+    return this.kubectlCmdAll("apply", resources, extraArgs);
+  }
+
+  public async kubectlDeleteAll(resources: string[], extraArgs: string[] = []): Promise<string> {
+    return this.kubectlCmdAll("delete", resources, extraArgs);
+  }
+
+  protected async kubectlCmdAll(subCmd: string, resources: string[], args: string[]): Promise<string> {
+    const kubectl = await this.cluster.ensureKubectl();
+    const kubectlPath = await kubectl.getPath();
+    const proxyKubeconfigPath = await this.cluster.getProxyKubeconfigPath();
+    const tmpDir = this.dependencies.tempDir();
+
+    try {
+      await Promise.all(
+        resources.map((resource, index) => this.dependencies.writeFile(path.join(tmpDir, `${index}.yaml`), resource)),
+      );
+
+      args.unshift(
+        subCmd,
+        "--kubeconfig", proxyKubeconfigPath,
+      );
+      args.push("-f", tmpDir);
+
+      this.dependencies.logger.info(`[RESOURCE-APPLIER] Executing ${kubectlPath}`, { args });
+
+      const { stdout } = await this.dependencies.execFile(kubectlPath, args);
+
+      return stdout;
+    } catch (error) {
+      this.dependencies.logger.error(`[RESOURCE-APPLIER] cmd errored: ${error}`);
+
+      throw String(error).split(`.yaml": `)[1] ?? error;
+    } finally {
+      await this.dependencies.removeDir(tmpDir);
+    }
+  }
+}
+
+function sanitizeObject(resource: KubernetesObject | any) {
+  const cleaned = JSON.parse(JSON.stringify(resource));
+
+  delete cleaned.status;
+  delete cleaned.metadata?.resourceVersion;
+  delete cleaned.metadata?.annotations?.["kubectl.kubernetes.io/last-applied-configuration"];
+
+  return cleaned;
+}

src/main/k8s/resource-applier/create.injectable.ts

@@ -0,0 +1,36 @@
+/**
+ * Copyright (c) OpenLens Authors. All rights reserved.
+ * Licensed under MIT License. See LICENSE in root directory for more information.
+ */
+import { getInjectable } from "@ogre-tools/injectable";
+import type { Cluster } from "../../../common/cluster/cluster";
+import removeDirInjectable from "../../../common/fs/remove.injectable";
+import tempDirInjectable from "../../../common/fs/temp-dir.injectable";
+import tempFileInjectable from "../../../common/fs/temp-file.injectable";
+import unlinkInjectable from "../../../common/fs/unlink.injectable";
+import writeFileInjectable from "../../../common/fs/write-file.injectable";
+import loggerInjectable from "../../../common/logger.injectable";
+import execFileInjectable from "../../child-process/exec-file.injectable";
+import type { K8sResourceApplier, ResourceApplierDependencies } from "./applier";
+import { ResourceApplier } from "./applier";
+
+export type CreateK8sResourceApplier = (cluster: Cluster) => K8sResourceApplier;
+
+const createK8sResourceApplierInjectable = getInjectable({
+  id: "create-k8s-resource-applier",
+  instantiate: (di): CreateK8sResourceApplier => {
+    const deps: ResourceApplierDependencies = {
+      execFile: di.inject(execFileInjectable),
+      removeDir: di.inject(removeDirInjectable),
+      unlink: di.inject(unlinkInjectable),
+      writeFile: di.inject(writeFileInjectable),
+      logger: di.inject(loggerInjectable),
+      tempDir: di.inject(tempDirInjectable),
+      tempFile: di.inject(tempFileInjectable),
+    };
+
+    return (cluster) => new ResourceApplier(deps, cluster);
+  },
+});
+
+export default createK8sResourceApplierInjectable;

src/main/resource-applier.ts

@@ -1,165 +0,0 @@
-/**
- * Copyright (c) OpenLens Authors. All rights reserved.
- * Licensed under MIT License. See LICENSE in root directory for more information.
- */
-
-import type { Cluster } from "../common/cluster/cluster";
-import type { KubernetesObject } from "@kubernetes/client-node";
-import { exec } from "child_process";
-import fs from "fs-extra";
-import * as yaml from "js-yaml";
-import path from "path";
-import tempy from "tempy";
-import logger from "./logger";
-import { appEventBus } from "../common/app-event-bus/event-bus";
-import { isChildProcessError } from "../common/utils";
-import type { Patch } from "rfc6902";
-import { promiseExecFile } from "../common/utils/promise-exec";
-
-export class ResourceApplier {
-  constructor(protected cluster: Cluster) {}
-
-  /**
-   * Patch a kube resource's manifest, throwing any error that occurs.
-   * @param name The name of the kube resource
-   * @param kind The kind of the kube resource
-   * @param patch The list of JSON operations
-   * @param ns The optional namespace of the kube resource
-   */
-  async patch(name: string, kind: string, patch: Patch, ns?: string): Promise<string> {
-    appEventBus.emit({ name: "resource", action: "patch" });
-
-    const kubectl = await this.cluster.ensureKubectl();
-    const kubectlPath = await kubectl.getPath();
-    const proxyKubeconfigPath = await this.cluster.getProxyKubeconfigPath();
-    const args = [
-      "--kubeconfig", proxyKubeconfigPath,
-      "patch",
-      kind,
-      name,
-    ];
-
-    if (ns) {
-      args.push("--namespace", ns);
-    }
-
-    args.push(
-      "--type", "json",
-      "--patch", JSON.stringify(patch),
-      "-o", "json",
-    );
-
-    try {
-      const { stdout } = await promiseExecFile(kubectlPath, args);
-
-      return stdout;
-    } catch (error) {
-      if (isChildProcessError(error)) {
-        throw error.stderr ?? error;
-      }
-
-      throw error;
-    }
-  }
-
-  async apply(resource: KubernetesObject | any): Promise<string> {
-    resource = this.sanitizeObject(resource);
-    appEventBus.emit({ name: "resource", action: "apply" });
-
-    return this.kubectlApply(yaml.dump(resource));
-  }
-
-  protected async kubectlApply(content: string): Promise<string> {
-    const kubectl = await this.cluster.ensureKubectl();
-    const kubectlPath = await kubectl.getPath();
-    const proxyKubeconfigPath = await this.cluster.getProxyKubeconfigPath();
-    const fileName = tempy.file({ name: "resource.yaml" });
-    const args = [
-      "apply",
-      "--kubeconfig", proxyKubeconfigPath,
-      "-o", "json",
-      "-f", fileName,
-    ];
-
-    logger.debug(`shooting manifests with ${kubectlPath}`, { args });
-
-    const execEnv = { ...process.env };
-    const httpsProxy = this.cluster.preferences?.httpsProxy;
-
-    if (httpsProxy) {
-      execEnv.HTTPS_PROXY = httpsProxy;
-    }
-
-    try {
-      await fs.writeFile(fileName, content);
-      const { stdout } = await promiseExecFile(kubectlPath, args);
-
-      return stdout;
-    } catch (error) {
-      if (isChildProcessError(error)) {
-        throw error.stderr ?? error;
-      }
-
-      throw error;
-    } finally {
-      await fs.unlink(fileName);
-    }
-  }
-
-  public async kubectlApplyAll(resources: string[], extraArgs = ["-o", "json"]): Promise<string> {
-    return this.kubectlCmdAll("apply", resources, extraArgs);
-  }
-
-  public async kubectlDeleteAll(resources: string[], extraArgs?: string[]): Promise<string> {
-    return this.kubectlCmdAll("delete", resources, extraArgs);
-  }
-
-  protected async kubectlCmdAll(subCmd: string, resources: string[], args: string[] = []): Promise<string> {
-    const kubectl = await this.cluster.ensureKubectl();
-    const kubectlPath = await kubectl.getPath();
-    const proxyKubeconfigPath = await this.cluster.getProxyKubeconfigPath();
-
-    return new Promise((resolve, reject) => {
-      const tmpDir = tempy.directory();
-
-      // Dump each resource into tmpDir
-      resources.forEach((resource, index) => {
-        fs.writeFileSync(path.join(tmpDir, `${index}.yaml`), resource);
-      });
-      args.push("-f", `"${tmpDir}"`);
-      const cmd = `"${kubectlPath}" ${subCmd} --kubeconfig "${proxyKubeconfigPath}" ${args.join(" ")}`;
-
-      logger.info(`[RESOURCE-APPLIER] running cmd ${cmd}`);
-      exec(cmd, (error, stdout) => {
-        if (error) {
-          logger.error(`[RESOURCE-APPLIER] cmd errored: ${error}`);
-          const splitError = error.toString().split(`.yaml": `);
-
-          if (splitError[1]) {
-            reject(splitError[1]);
-          } else {
-            reject(error);
-          }
-
-          return;
-        }
-
-        resolve(stdout);
-      });
-    });
-  }
-
-  protected sanitizeObject(resource: KubernetesObject | any) {
-    const res = JSON.parse(JSON.stringify(resource));
-
-    delete res.status;
-    delete res.metadata?.resourceVersion;
-    const annotations = res.metadata?.annotations;
-
-    if (annotations) {
-      delete annotations["kubectl.kubernetes.io/last-applied-configuration"];
-    }
-
-    return res;
-  }
-}

src/main/router/router.injectable.ts

@@ -2,8 +2,8 @@
  * Copyright (c) OpenLens Authors. All rights reserved.
  * Licensed under MIT License. See LICENSE in root directory for more information.
  */
-import type { Injectable } from "@ogre-tools/injectable";
-import { getInjectable, getInjectionToken, lifecycleEnum } from "@ogre-tools/injectable";
+import type { Injectable, InjectionToken } from "@ogre-tools/injectable";
+import { getInjectable, getInjectionToken } from "@ogre-tools/injectable";
 import { Router } from "./router";
 import parseRequestInjectable from "./parse-request.injectable";
 import type { Route } from "./route";
@@ -18,11 +18,10 @@ export function getRouteInjectable<
 >(
   opts: Omit<Injectable<Route<T, Path>, Route<T, Path>, void>, "lifecycle" | "injectionToken">,
 ): Injectable<Route<T, Path>, Route<T, Path>, void> {
-  return {
+  return getInjectable({
     ...opts,
-    injectionToken: routeInjectionToken as never,
-    lifecycle: lifecycleEnum.singleton as never,
-  };
+    injectionToken: routeInjectionToken as unknown as InjectionToken<Route<T, Path>, void>,
+  });
 }
 
 const routerInjectable = getInjectable({

src/main/router/router.test.ts

@@ -13,6 +13,7 @@ import type { AsyncFnMock } from "@async-fn/jest";
 import asyncFn from "@async-fn/jest";
 import parseRequestInjectable from "./parse-request.injectable";
 import { contentTypes } from "./router-content-types";
+import createK8sResourceApplierInjectable from "../k8s/resource-applier/create.injectable";
 import mockFs from "mock-fs";
 import directoryForUserDataInjectable from "../../common/app-paths/directory-for-user-data/directory-for-user-data.injectable";
 import type { Route } from "./route";
@@ -40,6 +41,12 @@ describe("router", () => {
     di.override(kubectlBinaryNameInjectable, () => "kubectl");
     di.override(kubectlDownloadingNormalizedArchInjectable, () => "amd64");
     di.override(normalizedPlatformInjectable, () => "darwin");
+    di.override(createK8sResourceApplierInjectable, () => () => ({
+      apply: jest.fn(),
+      kubectlApplyAll: jest.fn(),
+      kubectlDeleteAll: jest.fn(),
+      patch: jest.fn(),
+    }));
 
     const injectable = getInjectable({
       id: "some-route",

src/main/routes/resource-applier/apply-resource-route.injectable.ts

@@ -4,18 +4,22 @@
  */
 import { getRouteInjectable } from "../../router/router.injectable";
 import { apiPrefix } from "../../../common/vars";
-import { ResourceApplier } from "../../resource-applier";
 import { clusterRoute } from "../../router/route";
+import createK8sResourceApplierInjectable from "../../k8s/resource-applier/create.injectable";
 
 const applyResourceRouteInjectable = getRouteInjectable({
   id: "apply-resource-route",
 
-  instantiate: () => clusterRoute({
-    method: "post",
-    path: `${apiPrefix}/stack`,
-  })(async ({ cluster, payload }) => ({
-    response: await new ResourceApplier(cluster).apply(payload),
-  })),
+  instantiate: (di) => {
+    const createK8sResourceApplier = di.inject(createK8sResourceApplierInjectable);
+
+    return clusterRoute({
+      method: "post",
+      path: `${apiPrefix}/stack`,
+    })(async ({ cluster, payload }) => ({
+      response: await createK8sResourceApplier(cluster).apply(payload),
+    }));
+  },
 });
 
 export default applyResourceRouteInjectable;

src/main/routes/resource-applier/patch-resource-route.injectable.ts

@@ -4,10 +4,10 @@
  */
 import { getRouteInjectable } from "../../router/router.injectable";
 import { apiPrefix } from "../../../common/vars";
-import { ResourceApplier } from "../../resource-applier";
 import { payloadValidatedClusterRoute } from "../../router/route";
 import Joi from "joi";
 import type { Patch } from "rfc6902";
+import createK8sResourceApplierInjectable from "../../k8s/resource-applier/create.injectable";
 
 interface PatchResourcePayload {
   name: string;
@@ -40,18 +40,22 @@ const patchResourcePayloadValidator = Joi.object<PatchResourcePayload, true, Pat
 const patchResourceRouteInjectable = getRouteInjectable({
   id: "patch-resource-route",
 
-  instantiate: () => payloadValidatedClusterRoute({
-    method: "patch",
-    path: `${apiPrefix}/stack`,
-    payloadValidator: patchResourcePayloadValidator,
-  })(async ({ cluster, payload }) => ({
-    response: await new ResourceApplier(cluster).patch(
-      payload.name,
-      payload.kind,
-      payload.patch,
-      payload.ns,
-    ),
-  })),
+  instantiate: (di) => {
+    const createK8sResourceApplier = di.inject(createK8sResourceApplierInjectable);
+
+    return payloadValidatedClusterRoute({
+      method: "patch",
+      path: `${apiPrefix}/stack`,
+      payloadValidator: patchResourcePayloadValidator,
+    })(async ({ cluster, payload }) => ({
+      response: await createK8sResourceApplier(cluster).patch(
+        payload.name,
+        payload.kind,
+        payload.patch,
+        payload.ns,
+      ),
+    }));
+  },
 });
 
 export default patchResourceRouteInjectable;

src/renderer/components/delete-cluster-dialog/__tests__/delete-cluster-dialog.test.tsx

@@ -28,6 +28,8 @@ import hotbarStoreInjectable from "../../../../common/hotbars/store.injectable";
 import normalizedPlatformInjectable from "../../../../common/vars/normalized-platform.injectable";
 import kubectlBinaryNameInjectable from "../../../../main/kubectl/binary-name.injectable";
 import kubectlDownloadingNormalizedArchInjectable from "../../../../main/kubectl/normalized-arch.injectable";
+import readFileSyncInjectable from "../../../../common/fs/read-file-sync.injectable";
+import { readFileSync } from "fs";
 
 jest.mock("electron", () => ({
   app: {
@@ -95,12 +97,11 @@ users:
     token: kubeconfig-user-q4lm4:xxxyyyy
 `;
 
-let config: KubeConfig;
-
 describe("<DeleteClusterDialog />", () => {
   let applicationBuilder: ApplicationBuilder;
   let createCluster: CreateCluster;
   let openDeleteClusterDialog: OpenDeleteClusterDialog;
+  let config: KubeConfig;
 
   beforeEach(async () => {
     applicationBuilder = getApplicationBuilder();
@@ -114,6 +115,7 @@ describe("<DeleteClusterDialog />", () => {
 
       rendererDi.override(hotbarStoreInjectable, () => ({}));
       rendererDi.override(storesAndApisCanBeCreatedInjectable, () => true);
+      rendererDi.override(readFileSyncInjectable, () => readFileSync);
     });
 
     const { rendererDi } = applicationBuilder.dis;

src/test-utils/expects.ts

@@ -0,0 +1,36 @@
+/**
+ * Copyright (c) OpenLens Authors. All rights reserved.
+ * Licensed under MIT License. See LICENSE in root directory for more information.
+ */
+
+import { inspect } from "util";
+
+export interface OnlyOnce {
+  (value: any): void;
+  allSatisfied(): void;
+}
+
+export function expectInSetOnce(set: Set<any>): OnlyOnce {
+  const alreadySeen = new Set();
+  const haventSeen = new Set(set);
+
+  return Object.assign(
+    (value: any) => {
+      if (haventSeen.has(value)) {
+        haventSeen.delete(value);
+        alreadySeen.add(value);
+      } else if (alreadySeen.has(value)) {
+        throw new Error(`Expected ${inspect(value)} only once`);
+      } else {
+        throw new Error(`Unexpected value ${inspect(value)}`);
+      }
+    },
+    {
+      allSatisfied: () => {
+        if (haventSeen.size) {
+          throw new Error(`${haventSeen.size} items not seen`);
+        }
+      },
+    },
+  );
+}