+package de.juplo.demo;
+
+
+import java.net.URI;
+import java.nio.charset.Charset;
+import java.time.ZonedDateTime;
+import java.util.List;
+import java.util.Map;
+import java.util.function.Consumer;
+import java.util.function.Function;
+import java.util.function.IntPredicate;
+import java.util.function.Predicate;
+import java.util.function.Supplier;
+import org.reactivestreams.Publisher;
+import org.springframework.core.ParameterizedTypeReference;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.http.client.reactive.ClientHttpRequest;
+import org.springframework.util.MultiValueMap;
+import org.springframework.web.reactive.function.BodyInserter;
+import org.springframework.web.reactive.function.client.ClientResponse;
+import org.springframework.web.reactive.function.client.WebClient;
+import org.springframework.web.util.UriBuilder;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+
+/**
+ * A stub for {@link WebClient}, that can be used for mocking.
+ * @author Kai Moritz
+ */
+public class WebClientStub implements WebClient
+{
+ public final static WebClientStub WEB_CLIENT = new WebClientStub();
+ public final static RequestHeadersUriSpecStub HEADERS_SPEC = new RequestHeadersUriSpecStub();
+ public final static RequestBodySpecStub REQUEST_BODY_SPEC = new RequestBodySpecStub();
+ public final static ResponseSpecStub RESPONSE_SPEC = new ResponseSpecStub();
+
+ private static Supplier<Mono<?>> TO_MONO = () -> null;
+ private static Supplier<Flux<?>> TO_FLUX = () -> null;
+
+
+ public static void expect(Mono<?> mono) { TO_MONO = () -> mono; }
+ public static void expect(Flux<?> flux) { TO_FLUX = () -> flux; }
+
+
+ private WebClientStub() {}
+
+
+ @Override
+ public WebClient.RequestHeadersUriSpec<?> get()
+ {
+ return HEADERS_SPEC;
+ }
+
+ @Override
+ public WebClient.RequestHeadersUriSpec<?> head()
+ {
+ return HEADERS_SPEC;
+ }
+
+ @Override
+ public WebClient.RequestBodyUriSpec post()
+ {
+ return REQUEST_BODY_SPEC;
+ }
+
+ @Override
+ public WebClient.RequestBodyUriSpec put()
+ {
+ return REQUEST_BODY_SPEC;
+ }
+
+ @Override
+ public WebClient.RequestBodyUriSpec patch()
+ {
+ return REQUEST_BODY_SPEC;
+ }
+
+ @Override
+ public WebClient.RequestHeadersUriSpec<?> delete()
+ {
+ return HEADERS_SPEC;
+ }
+
+ @Override
+ public WebClient.RequestHeadersUriSpec<?> options()
+ {
+ return HEADERS_SPEC;
+ }
+
+ @Override
+ public WebClient.RequestBodyUriSpec method(HttpMethod hm)
+ {
+ return REQUEST_BODY_SPEC;
+ }
+
+ @Override
+ public WebClient.Builder mutate()
+ {
+ throw new UnsupportedOperationException("Stub is immutable!");
+ }
+
+
+ public static class RequestHeadersUriSpecStub implements WebClient.RequestHeadersUriSpec
+ {
+ private RequestHeadersUriSpecStub() {}
+
+
+ @Override
+ public WebClient.RequestHeadersSpec uri(URI uri)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestHeadersSpec uri(String string, Object... os)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestHeadersSpec uri(String string, Map map)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestHeadersSpec uri(String string, Function fnctn)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestHeadersSpec uri(Function fnctn)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestHeadersSpec accept(MediaType... mts)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestHeadersSpec acceptCharset(Charset... chrsts)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestHeadersSpec cookie(String string, String string1)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestHeadersSpec cookies(Consumer cnsmr)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestHeadersSpec ifModifiedSince(ZonedDateTime zdt)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestHeadersSpec ifNoneMatch(String... strings)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestHeadersSpec header(String string, String... strings)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestHeadersSpec headers(Consumer cnsmr)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestHeadersSpec attribute(String string, Object o)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestHeadersSpec attributes(Consumer cnsmr)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.ResponseSpec retrieve()
+ {
+ return RESPONSE_SPEC;
+ }
+
+ @Override
+ public Mono exchange()
+ {
+ return WebClientStub.TO_MONO.get();
+ }
+ }
+
+ public static class RequestBodySpecStub implements WebClient.RequestBodyUriSpec
+ {
+ private RequestBodySpecStub() {}
+
+
+ @Override
+ public WebClient.RequestBodySpec contentLength(long l)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestBodySpec contentType(MediaType mt)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestHeadersSpec<?> bodyValue(Object o)
+ {
+ return this;
+ }
+
+ @Override
+ public <T, P extends Publisher<T>> WebClient.RequestHeadersSpec<?> body(P p, Class<T> type)
+ {
+ return this;
+ }
+
+ @Override
+ public <T, P extends Publisher<T>> WebClient.RequestHeadersSpec<?> body(P p, ParameterizedTypeReference<T> ptr)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestHeadersSpec<?> body(Object o, Class<?> type)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestHeadersSpec<?> body(Object o, ParameterizedTypeReference<?> ptr)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestHeadersSpec<?> body( BodyInserter<?, ? super ClientHttpRequest> bi)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestHeadersSpec<?> syncBody(Object o)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestBodySpec accept(MediaType... mts)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestBodySpec acceptCharset(Charset... chrsts)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestBodySpec cookie(String string, String string1)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestBodySpec cookies(Consumer<MultiValueMap<String, String>> cnsmr)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestBodySpec ifModifiedSince(ZonedDateTime zdt)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestBodySpec ifNoneMatch(String... strings)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestBodySpec header(String string, String... strings)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestBodySpec headers(Consumer<HttpHeaders> cnsmr)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestBodySpec attribute(String string, Object o)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestBodySpec attributes(Consumer<Map<String, Object>> cnsmr)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.ResponseSpec retrieve()
+ {
+ throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
+ }
+
+ @Override
+ public Mono<ClientResponse> exchange()
+ {
+ throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
+ }
+
+ @Override
+ public WebClient.RequestBodySpec uri(URI uri)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestBodySpec uri(String string, Object... os)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestBodySpec uri(String string, Map<String, ?> map)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestBodySpec uri(String string, Function<UriBuilder, URI> fnctn)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.RequestBodySpec uri(Function<UriBuilder, URI> fnctn)
+ {
+ return this;
+ }
+ }
+
+ public static class ResponseSpecStub implements WebClient.ResponseSpec
+ {
+ private ResponseSpecStub() {}
+
+
+ @Override
+ public WebClient.ResponseSpec onStatus(Predicate<HttpStatus> statusPredicate, Function<ClientResponse, Mono<? extends Throwable>> exceptionFunction)
+ {
+ return this;
+ }
+
+ @Override
+ public WebClient.ResponseSpec onRawStatus(IntPredicate statusCodePredicate, Function<ClientResponse, Mono<? extends Throwable>> exceptionFunction)
+ {
+ return this;
+ }
+
+ @Override
+ public <T> Mono<T> bodyToMono(Class<T> elementClass)
+ {
+ return (Mono<T>)TO_MONO.get();
+ }
+
+ @Override
+ public <T> Mono<T> bodyToMono(ParameterizedTypeReference<T> elementTypeRef)
+ {
+ return (Mono<T>)TO_MONO.get();
+ }
+
+ @Override
+ public <T> Flux<T> bodyToFlux(Class<T> elementClass)
+ {
+ return (Flux<T>)TO_FLUX;
+ }
+
+ @Override
+ public <T> Flux<T> bodyToFlux(ParameterizedTypeReference<T> elementTypeRef)
+ {
+ return (Flux<T>)TO_FLUX;
+ }
+
+ @Override
+ public <T> Mono<ResponseEntity<T>> toEntity(Class<T> bodyClass)
+ {
+ return (Mono<ResponseEntity<T>>)TO_MONO.get();
+ }
+
+ @Override
+ public <T> Mono<ResponseEntity<T>> toEntity(ParameterizedTypeReference<T> bodyTypeReference)
+ {
+ return (Mono<ResponseEntity<T>>)TO_MONO.get();
+ }
+
+ @Override
+ public <T> Mono<ResponseEntity<List<T>>> toEntityList(Class<T> elementClass)
+ {
+ return (Mono<ResponseEntity<List<T>>>)TO_MONO.get();
+ }
+
+ @Override
+ public <T> Mono<ResponseEntity<List<T>>> toEntityList(ParameterizedTypeReference<T> elementTypeRef)
+ {
+ return (Mono<ResponseEntity<List<T>>>)TO_MONO.get();
+ }
+
+ @Override
+ public Mono<ResponseEntity<Void>> toBodilessEntity()
+ {
+ return (Mono<ResponseEntity<Void>>)TO_MONO.get();
+ }
+ }
+}