public void Should_find_all_policies_when_search_string_is_empty()
        {
            var expectedPolicies = _dataService.GetAllInsurancePolicies();

            SetPathToFile();

            // set to non empty string to simulate a pre-existing search
            _viewModel.SearchText = "make a non-empty search first";
            // set to empty string to simulate clearing a search
            _viewModel.SearchText = String.Empty;

            var searchResults = _viewModel.InsurancePolicies.Select(s => s.InsurancePolicy).ToList();

            Xenios.Test.Helpers.InsurancePolicyHelper.
            AssertAreEqual(expectedPolicies, searchResults.ToList());
        }