public void EncryptData_should_be_enabled_when_encryption_key_is_given(bool encryptionKeyEntered)
        {
            // given
            var configurationMock = new Mock <IConfiguration>();

            configurationMock
            .Setup(x => x.EncryptionKey)
            .Returns(encryptionKeyEntered ? "key" : null);
            _configurationServiceMock
            .Setup(x => x.GetConfiguration())
            .Returns(configurationMock.Object);

            // when
            var result = _controller.EncryptData() as ViewResult;

            // then
            Assert.That(result.ViewName, Is.EqualTo("EncryptData"));

            var model = result.Model as EncryptedDataViewModel;

            Assert.That(model.IsEnabled, Is.EqualTo(encryptionKeyEntered));
        }