test_gcp.go

# put this in reconciler_test.go

func TestExists2(t *testing.T) {
	scope, err := newLocalMachineScope()
	if err != nil {
		t.Fatalf("err: %v", err)
	}
	r := newReconciler(scope)
	exists, err := r.instanceExists()
	if err != nil {
		t.Fatalf("err: %v", err)
	}
	if !exists {
		t.Errorf("exists: %v", exists)
	}
}

func newLocalMachineScope() (*machineScope, error) {

	gclient, err := google.DefaultClient(context.TODO(), compute.ComputeScope)
    if err != nil {
        return nil, err
    }
    computeService, err := computeservice.NewComputeService(gclient)
	if err != nil {
		return nil, err
	}

	machineScope := machineScope{
		machine: &v1beta1.Machine{
			ObjectMeta: metav1.ObjectMeta{
				Name:      "notfound",
				Namespace: "",
			},
		},
		coreClient:     controllerfake.NewFakeClient(),
		providerSpec:   &gcpv1beta1.GCPMachineProviderSpec{
			Zone: "us-east1-c",
		},
		projectID:      "notfound",
		computeService: computeService,
	}
	return &machineScope, nil
}