Merge pull request #10411 from Trixi-Turny/BAEL-4748
BAEL-4748 implement UserConsumerService with webClient and write Unit…
This commit is contained in:
Eric Martin
GitHub
commit
29d798d54f
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package com.baeldung.webclient.json;
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import com.baeldung.webclient.json.model.Book;
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import java.util.List;
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public interface ReaderConsumerService {
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List<Book> processReaderDataFromObjectArray();
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List<Book> processReaderDataFromReaderArray();
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List<Book> processReaderDataFromReaderList();
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List<String> processNestedReaderDataFromReaderArray();
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List<String> processNestedReaderDataFromReaderList();
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}
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package com.baeldung.webclient.json;
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import com.baeldung.webclient.json.model.Book;
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import com.baeldung.webclient.json.model.Reader;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import org.springframework.core.ParameterizedTypeReference;
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import org.springframework.http.MediaType;
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import org.springframework.web.reactive.function.client.WebClient;
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import reactor.core.publisher.Mono;
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import java.util.Arrays;
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import java.util.List;
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import java.util.stream.Collectors;
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public class ReaderConsumerServiceImpl implements ReaderConsumerService {
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private final WebClient webClient;
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private static final ObjectMapper mapper = new ObjectMapper();
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public ReaderConsumerServiceImpl(WebClient webClient) {
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this.webClient = webClient;
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}
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@Override
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public List<Book> processReaderDataFromObjectArray() {
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Mono<Object[]> response = webClient.get()
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.accept(MediaType.APPLICATION_JSON)
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.retrieve()
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.bodyToMono(Object[].class).log();
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Object[] objects = response.block();
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return Arrays.stream(objects)
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.map(object -> mapper.convertValue(object, Reader.class))
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.map(Reader::getFavouriteBook)
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.collect(Collectors.toList());
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}
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@Override
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public List<Book> processReaderDataFromReaderArray() {
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Mono<Reader[]> response =
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webClient.get()
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.accept(MediaType.APPLICATION_JSON)
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.retrieve()
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.bodyToMono(Reader[].class).log();
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Reader[] readers = response.block();
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return Arrays.stream(readers)
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.map(Reader::getFavouriteBook)
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.collect(Collectors.toList());
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}
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@Override
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public List<Book> processReaderDataFromReaderList() {
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Mono<List<Reader>> response = webClient.get()
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.accept(MediaType.APPLICATION_JSON)
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.retrieve()
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.bodyToMono(new ParameterizedTypeReference<List<Reader>>() {});
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List<Reader> readers = response.block();
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return readers.stream()
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.map(Reader::getFavouriteBook)
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.collect(Collectors.toList());
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}
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@Override
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public List<String> processNestedReaderDataFromReaderArray() {
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Mono<Reader[]> response = webClient.get()
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.accept(MediaType.APPLICATION_JSON)
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.retrieve()
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.bodyToMono(Reader[].class).log();
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Reader[] readers = response.block();
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return Arrays.stream(readers)
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.flatMap(reader -> reader.getBooksRead().stream())
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.map(Book::getAuthor)
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.collect(Collectors.toList());
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}
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@Override
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public List<String> processNestedReaderDataFromReaderList() {
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Mono<List<Reader>> response = webClient.get()
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.accept(MediaType.APPLICATION_JSON)
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.retrieve()
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.bodyToMono(new ParameterizedTypeReference<List<Reader>>() {});
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List<Reader> readers = response.block();
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return readers.stream()
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.flatMap(reader -> reader.getBooksRead().stream())
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.map(Book::getAuthor)
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.collect(Collectors.toList());
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}
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}
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package com.baeldung.webclient.json.model;
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import com.fasterxml.jackson.annotation.JsonCreator;
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import com.fasterxml.jackson.annotation.JsonInclude;
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import com.fasterxml.jackson.annotation.JsonProperty;
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@JsonInclude(JsonInclude.Include.NON_NULL)
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public class Book {
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private final String author;
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private final String title;
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@JsonCreator
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public Book(
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@JsonProperty("author") String author,
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@JsonProperty("title") String title) {
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this.author = author;
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this.title = title;
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}
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public String getAuthor() {
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return this.author;
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}
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}
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package com.baeldung.webclient.json.model;
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import com.fasterxml.jackson.annotation.JsonCreator;
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import com.fasterxml.jackson.annotation.JsonInclude;
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import com.fasterxml.jackson.annotation.JsonProperty;
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import java.util.List;
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@JsonInclude(JsonInclude.Include.NON_NULL)
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public class Reader {
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private final int id;
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private final String name;
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private final Book favouriteBook;
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private final List<Book> booksRead;
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@JsonCreator
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public Reader(
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@JsonProperty("id") int id,
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@JsonProperty("name") String name,
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@JsonProperty("favouriteBook") Book favouriteBook,
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@JsonProperty("booksRead") List<Book> booksRead) {
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this.id = id;
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this.name = name;
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this.favouriteBook = favouriteBook;
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this.booksRead =booksRead;
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}
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public Book getFavouriteBook() {
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return favouriteBook;
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}
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public List<Book> getBooksRead() { return booksRead; }
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}
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@ -0,0 +1,88 @@
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package com.baeldung.webclient.json;
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import com.baeldung.webclient.json.model.Book;
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import org.junit.jupiter.api.Test;
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import org.springframework.http.HttpStatus;
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import org.springframework.web.reactive.function.client.ClientResponse;
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import org.springframework.web.reactive.function.client.WebClient;
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import reactor.core.publisher.Mono;
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import java.util.Arrays;
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import java.util.List;
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import static org.hamcrest.MatcherAssert.assertThat;
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import static org.hamcrest.CoreMatchers.hasItems;
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import static org.hamcrest.CoreMatchers.is;
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import static org.hamcrest.Matchers.hasProperty;
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public class ReaderConsumerServiceImplUnitTest {
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private static String READER_JSON = "[{\"id\":1,\"name\":\"reader1\",\"favouriteBook\":{\"author\":\"Milan Kundera\",\"title\":\"The Unbearable Lightness of Being\"}," +
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"\"booksRead\":[{\"author\":\"Charles Dickens\",\"title\":\"Oliver Twist\"},{\"author\":\"Milan Kundera\",\"title\":\"The Unbearable Lightness of Being\"}]}," +
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"{\"id\":2,\"name\":\"reader2\",\"favouriteBook\":{\"author\":\"Douglas Adams\",\"title\":\"The Hitchhiker\'s Guide to the Galaxy\"}," +
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"\"booksRead\":[{\"author\":\"J.R.R. Tolkien\",\"title\":\"Lord of the Rings\"}, " +
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"{\"author\":\"Douglas Adams\",\"title\":\"The Hitchhiker\'s Guide to the Galaxy\"}]}]";
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private static String BASE_URL = "http://localhost:8080/readers";
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WebClient webClientMock = WebClient.builder().baseUrl(BASE_URL)
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.exchangeFunction(clientRequest -> Mono.just(ClientResponse.create(HttpStatus.OK)
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.header("content-type", "application/json")
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.body(READER_JSON)
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.build()))
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.build();
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private final ReaderConsumerService tested = new ReaderConsumerServiceImpl(webClientMock);
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@Test
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void when_processReaderDataFromObjectArray_then_OK() {
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String expectedAuthor1 = "Milan Kundera";
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String expectedAuthor2 = "Douglas Adams";
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List<Book> actual = tested.processReaderDataFromObjectArray();
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assertThat(actual, hasItems(hasProperty("author", is(expectedAuthor1)),
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hasProperty("author", is(expectedAuthor2))));
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}
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@Test
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void when_processReaderDataFromReaderArray_then_OK() {
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String expectedAuthor1 = "Milan Kundera";
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String expectedAuthor2 = "Douglas Adams";
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List<Book> actual = tested.processReaderDataFromReaderArray();
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assertThat(actual, hasItems(hasProperty("author", is(expectedAuthor1)),
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hasProperty("author", is(expectedAuthor2))));
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}
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@Test
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void when_processReaderDataFromReaderList_then_OK() {
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String expectedAuthor1 = "Milan Kundera";
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String expectedAuthor2 = "Douglas Adams";
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List<Book> actual = tested.processReaderDataFromReaderList();
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assertThat(actual, hasItems(hasProperty("author", is(expectedAuthor1)),
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hasProperty("author", is(expectedAuthor2))));
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}
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@Test
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void when_processNestedReaderDataFromReaderArray_then_OK() {
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List<String> expected = Arrays.asList(
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"Milan Kundera",
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"Charles Dickens",
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"J.R.R. Tolkien",
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"Douglas Adams");
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List<String> actual = tested.processNestedReaderDataFromReaderArray();
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assertThat(actual, hasItems(expected.get(0), expected.get(1), expected.get(2), expected.get(3)));
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}
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@Test
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void when_processNestedReaderDataFromReaderList_then_OK() {
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List<String> expected = Arrays.asList(
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"Milan Kundera",
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"Charles Dickens",
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"J.R.R. Tolkien",
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"Douglas Adams");
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List<String> actual = tested.processNestedReaderDataFromReaderList();
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assertThat(actual, hasItems(expected.get(0), expected.get(1), expected.get(2), expected.get(3)));
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}
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}
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