EVEREST-312 Repeated deletion fix

cli-tests/tests/flow/all-operators.spec.ts

@@ -61,6 +61,15 @@ test.describe('Everest CLI install operators', async () => {
     await verifyClusterResources();
     await apiVerifyClusterExists(request, clusterName);
     await cliDeleteCluster(cli, request, clusterName);
+
+    await test.step('try to delete cluster again', async () => {
+      const out = await cli.everestExecSilent('delete cluster');
+
+      await out.exitCodeEquals(1);
+      await out.outErrContainsNormalizedMany([
+        'no Kubernetes clusters found',
+      ]);
+    });
     await verifyClusterResources();
   });
 });

pkg/delete/cluster.go

@@ -174,6 +174,12 @@ func (c *Cluster) askForKubernetesCluster(ctx context.Context) error {
 		return err
 	}
 
+	if len(clusters) == 0 {
+		l := c.l.WithOptions(zap.AddStacktrace(zap.DPanicLevel))
+		l.Error("no Kubernetes clusters found")
+		return common.ErrExitWithError
+	}
+
 	opts := make([]string, 0, len(clusters)+1)
 	for _, i := range clusters {
 		opts = append(opts, i.Name)