[JavaEE] Implement a test for REST endpoint
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1. We have the BookEndpoint.java:
package com.pluralsight.bookstore.rest; import com.pluralsight.bookstore.model.Book; import com.pluralsight.bookstore.repository.BookRepository; import javax.inject.Inject; import javax.validation.constraints.Min; import javax.ws.rs.*; import javax.ws.rs.core.Context; import javax.ws.rs.core.Response; import javax.ws.rs.core.UriInfo; import java.net.URI; import java.util.List; import static javax.ws.rs.core.MediaType.APPLICATION_JSON; //api/books @Path("/books") public class BookEndpoint { @Inject private BookRepository bookRepository; @POST @Consumes(APPLICATION_JSON) public Response createBook(Book book, @Context UriInfo uriInfo) { book = bookRepository.create(book); URI createedURI = uriInfo.getBaseUriBuilder().path(book.getId().toString()).build(); return Response.created(createedURI).build(); } @GET @Produces(APPLICATION_JSON) public Response getBooks() { List<Book> books = bookRepository.findAll(); if(books.size() == 0) { return Response.noContent().build(); } return Response.ok(books).build(); } @GET @Path("/{id: \d+}") @Produces(APPLICATION_JSON) public Response getBook(@PathParam("id") @Min(1) Long id) { Book book = bookRepository.find(id); if(book == null) { return Response.status(Response.Status.NOT_FOUND).build(); } return Response.ok(book).build(); } // api/books/count @GET @Path("/count") public Response countBooks() { Long nbOfBooks = bookRepository.countAll(); if(nbOfBooks == 0) { return Response.noContent().build(); } return Response.ok(nbOfBooks).build(); } @DELETE @Path("/{id : \d+}") public Response deleteBook(Long id) { bookRepository.delete(id); return Response.noContent().build(); } }
2. Creating a test for the REST endpoint:
package com.pluralsight.bookstore.rest; import com.pluralsight.bookstore.model.Book; import com.pluralsight.bookstore.model.Language; import com.pluralsight.bookstore.repository.BookRepository; import org.jboss.arquillian.container.test.api.Deployment; import org.jboss.arquillian.junit.Arquillian; import org.jboss.arquillian.test.api.ArquillianResource; import org.jboss.shrinkwrap.api.ShrinkWrap; import org.jboss.shrinkwrap.api.asset.EmptyAsset; import org.jboss.shrinkwrap.api.spec.JavaArchive; import org.junit.After; import org.junit.Test; import org.junit.runner.RunWith; import javax.ws.rs.client.Entity; import javax.ws.rs.client.WebTarget; import javax.ws.rs.core.Response; import java.util.Date; import static javax.ws.rs.core.MediaType.APPLICATION_JSON; import static javax.ws.rs.core.Response.Status.CREATED; import static javax.ws.rs.core.Response.Status.NO_CONTENT; import static org.junit.Assert.*; @RunWith(Arquillian.class) public class BookEndpointTest { //testable tell wildfly not to package this test, // cause we want to test from outside by using HTTP @Deployment(testable = false) public static JavaArchive createDeployment() { return ShrinkWrap.create(JavaArchive.class) .addClass(BookRepository.class) .addClass(Book.class) .addClass(Language.class) .addClass(BookEndpoint.class) .addClass(JAXRSConfiguration.class) .addAsManifestResource(EmptyAsset.INSTANCE, "beans.xml") .addAsManifestResource("META-INF/test-persistence.xml", "persistence.xml"); } @After public void tearDown() throws Exception { } @Test public void createBook(@ArquillianResource("api/books")WebTarget webTarget) { // Test counting books Response response = webTarget.path("count").request().get(); assertEquals(NO_CONTENT.getStatusCode(), response.getStatus()); // Test find all response = webTarget.request(APPLICATION_JSON).get(); assertEquals(NO_CONTENT.getStatusCode(), response.getStatus()); // Create a book Book book = new Book("isbn", null, 12F, 123, Language.ENGLISH, new Date(), "imageURL", "description"); response = webTarget.request(APPLICATION_JSON).post(Entity.entity(book, APPLICATION_JSON)); assertEquals(CREATED.getStatusCode(), response.getStatus()); } }
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