How to use

firstOf

method

in

io.sphere.sdk.test.SphereTestUtils

  @Test
  public void taxCategory() throws Exception {
    TaxCategoryFixtures.withTransientTaxCategory(client(), taxCategory ->
      withProduct(client(), product -> {
        final Product productWithTaxCategory = client().executeBlocking(ProductUpdateCommand.of(product, SetTaxCategory.of(taxCategory)));
        assertThat(productWithTaxCategory.getTaxCategory()).isNotNull();
        final Query<Product> query = ProductQuery.of().
            bySlug(ProductProjectionType.CURRENT, Locale.ENGLISH, englishSlugOf(product.getMasterData().getStaged())).
            withExpansionPaths(ProductExpansionModel.of().taxCategory()).
            toQuery();
        final PagedQueryResult<Product> queryResult = client().executeBlocking(query);
        final Reference<TaxCategory> productTypeReference = firstOf(queryResult).getTaxCategory();
        assertThat(productTypeReference).is(expanded());
      })
    );
  }
}