Fix cluster frame display issue (#5518)

* Fix cluster frame display issue

- Add some defensive code to prevent this sort of infinite loop

- Add some unit tests

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

* fix unit tests

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

* Fix build

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

* Fix lint

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

* Factor out injectable for getting of cluster config data

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

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

@@ -26,6 +26,8 @@ import kubectlDownloadingNormalizedArchInjectable from "../kubectl/normalized-ar
 
 console = new Console(process.stdout, process.stderr); // fix mockFS
 
+const clusterServerUrl = "https://192.168.64.3:8443";
+
 describe("kubeconfig manager tests", () => {
   let clusterFake: Cluster;
   let createKubeconfigManager: (cluster: Cluster) => KubeconfigManager | undefined;
@@ -57,7 +59,7 @@ describe("kubeconfig manager tests", () => {
         clusters: [{
           name: "minikube",
           cluster: {
-            server: "https://192.168.64.3:8443",
+            server: clusterServerUrl,
           },
         }],
         contexts: [{
@@ -95,6 +97,8 @@ describe("kubeconfig manager tests", () => {
       id: "foo",
       contextName: "minikube",
       kubeConfigPath: "minikube-config.yml",
+    }, {
+      clusterServerUrl,
     });
 
     jest.spyOn(KubeconfigManager.prototype, "resolveProxyUrl", "get").mockReturnValue("http://127.0.0.1:9191/foo");