fix tests

Signed-off-by: Jari Kolehmainen <jari.kolehmainen@gmail.com>

src/renderer/components/layout/__test__/main-layout-header.test.tsx

@@ -7,20 +7,50 @@ import "@testing-library/jest-dom/extend-expect";
 import { MainLayoutHeader } from "../main-layout-header";
 import { Cluster } from "../../../../main/cluster";
 import { ClusterStore } from "../../../../common/cluster-store";
+import mockFs from "mock-fs";
 
-const cluster: Cluster = new Cluster({
+describe("<MainLayoutHeader />", () => {
+  let cluster: Cluster;
+
+  beforeEach(() => {
+    const mockOpts = {
+      "minikube-config.yml": JSON.stringify({
+        apiVersion: "v1",
+        clusters: [{
+          name: "minikube",
+          cluster: {
+            server: "https://192.168.64.3:8443",
+          },
+        }],
+        contexts: [{
+          context: {
+            cluster: "minikube",
+            user: "minikube",
+          },
+          name: "minikube",
+        }],
+        users: [{
+          name: "minikube",
+        }],
+        kind: "Config",
+        preferences: {},
+      })
+    };
+
+    mockFs(mockOpts);
+
+    ClusterStore.createInstance();
+
+    cluster = new Cluster({
       id: "foo",
       contextName: "minikube",
       kubeConfigPath: "minikube-config.yml",
     });
-
-describe("<MainLayoutHeader />", () => {
-  beforeEach(() => {
-    ClusterStore.createInstance();
   });
 
   afterEach(() => {
     ClusterStore.resetInstance();
+    mockFs.restore();
   });
 
   it("renders w/o errors", () => {