diff --git a/pkg/controllers/device_controller_test.go b/pkg/controllers/device_controller_test.go
new file mode 100644
index 00000000..bded9a68
--- /dev/null
+++ b/pkg/controllers/device_controller_test.go
@@ -0,0 +1,48 @@
+package controllers
+
+import (
+	"context"
+	"testing"
+
+	"github.com/janekbaraniewski/kubeserial/pkg/apis/kubeserial/v1alpha1"
+	"github.com/stretchr/testify/assert"
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/types"
+	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
+	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
+	controllerruntime "sigs.k8s.io/controller-runtime"
+	runtimefake "sigs.k8s.io/controller-runtime/pkg/client/fake"
+)
+
+func TestDeviceReconciler_Reconcile(t *testing.T) {
+	deviceName := types.NamespacedName{
+		Name:      "test-device",
+		Namespace: "test-ns",
+	}
+
+	device := &v1alpha1.Device{
+		ObjectMeta: v1.ObjectMeta{
+			Name:      deviceName.Name,
+			Namespace: deviceName.Namespace,
+		},
+	}
+	scheme := runtime.NewScheme()
+	utilruntime.Must(clientgoscheme.AddToScheme(scheme))
+	utilruntime.Must(v1alpha1.AddToScheme(scheme))
+	fakeClient := runtimefake.NewClientBuilder().WithScheme(scheme).Build()
+
+	err := fakeClient.Create(context.TODO(), device)
+
+	assert.Equal(t, nil, err)
+
+	deviceReconciler := DeviceReconciler{
+		Client: fakeClient,
+		Scheme: scheme,
+	}
+
+	result, err := deviceReconciler.Reconcile(context.TODO(), controllerruntime.Request{NamespacedName: deviceName})
+
+	assert.Equal(t, nil, err)
+	assert.Equal(t, false, result.Requeue)
+}