WIP: WebClient
[facebook-errors] / src / test / java / de / juplo / facebook / errors / GraphApiExchangeFilterFunctionIntegrationTest.java
index d17c7f7..4e07259 100644 (file)
@@ -1,17 +1,22 @@
 package de.juplo.facebook.errors;
 
 
+import de.juplo.facebook.errors.GraphApiException.Type;
 import java.time.Duration;
 import java.util.List;
 import okhttp3.mockwebserver.MockResponse;
 import okhttp3.mockwebserver.MockWebServer;
 import org.junit.After;
-import org.junit.Assert;
+import static org.junit.Assert.assertEquals;
 import org.junit.Before;
 import org.junit.Test;
-import org.springframework.web.reactive.function.client.ExchangeFilterFunction;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.client.reactive.JettyClientHttpConnector;
 import org.springframework.web.reactive.function.client.WebClient;
 import reactor.core.publisher.Mono;
+import reactor.test.StepVerifier;
 
 
 /**
@@ -20,69 +25,121 @@ import reactor.core.publisher.Mono;
  */
 public class GraphApiExchangeFilterFunctionIntegrationTest
 {
-       private MockWebServer server;
+  private static final Logger LOG =
+      LoggerFactory.getLogger(GraphApiExchangeFilterFunctionIntegrationTest.class);
 
+  private MockWebServer server;
        private WebClient webClient;
 
 
        @Before
-       public void setup() {
-               this.server = new MockWebServer();
-               String baseUrl = this.server.url("/").toString();
-               this.webClient = WebClient.create(baseUrl);
+       public void setup()
+  {
+    server = new MockWebServer();
+    webClient =
+        WebClient
+            .builder()
+            .clientConnector(new JettyClientHttpConnector())
+            .baseUrl(server.url("/").toString())
+            .build();
        }
 
        @After
-       public void shutdown() throws Exception {
-               this.server.shutdown();
+       public void shutdown() throws Exception
+  {
+    this.server.shutdown();
        }
 
 
   @Test
-  public void errorHandlingFilter() throws Exception
+  public void testValidError()
   {
-
-    ExchangeFilterFunction filter = ExchangeFilterFunction.ofResponseProcessor(
-        clientResponse ->
-    {
-      List<String> headerValues = clientResponse.headers().header("Foo");
-      return headerValues.isEmpty() ? Mono.error(
-          new MyException("Response does not contain Foo header")) : Mono.just(
-              clientResponse);
-    }
-    );
-
-    WebClient filteredClient = this.webClient.filter(filter);
-
-    // header not present
-    this.server.enqueue(new MockResponse().setHeader("Content-Type",
-        "text/plain").setBody("Hello Spring!"));
-
-    Mono<String> result = filteredClient.get()
-        .uri("/greeting?name=Spring")
-        .retrieve()
-        .bodyToMono(String.class);
-
-    StepVerifier.create(result)
-        .expectError(MyException.class)
+    server
+        .enqueue(new MockResponse()
+            .setResponseCode(HttpStatus.BAD_REQUEST.value())
+            .setHeader("Content-Type", "application/json")
+            .setBody(
+                "{\n" +
+                "  \"error\":\n" +
+                "  {\n" +
+                "    \"message\": \"(#613) Calls to stream have exceeded the rate of 600 calls per 600 seconds.\",\n" +
+                "    \"type\": \"OAuthException\",\n" +
+                "    \"code\": 613\n" +
+                "  }\n" +
+                "}"));
+
+
+    Mono<String> result =
+        webClient
+            .get()
+            .uri("/egal")
+            .retrieve()
+            .onStatus(status -> status.is4xxClientError(), response -> GraphApiException.create(response))
+            .bodyToMono(String.class);
+
+    StepVerifier
+        .create(result)
+        .expectErrorSatisfies(throwable ->
+        {
+          assertEquals(RateLimitExceededException.class, throwable.getClass());
+          RateLimitExceededException e = (RateLimitExceededException)throwable;
+          LOG.debug("{}", e.toString());
+          assertEquals(new Integer(613), e.getCode());
+          assertEquals("(#613) Calls to stream have exceeded the rate of 600 calls per 600 seconds.", e.getMessage());
+          assertEquals(Type.OAuthException, e.getType());
+        })
         .verify(Duration.ofSeconds(3));
+  }
 
-    // header present
-    this.server.enqueue(new MockResponse().setHeader("Content-Type",
-        "text/plain")
-        .setHeader("Foo", "Bar")
-        .setBody("Hello Spring!"));
-
-    result = filteredClient.get()
-        .uri("/greeting?name=Spring")
-        .retrieve()
-        .bodyToMono(String.class);
-
-    StepVerifier.create(result)
-        .expectNext("Hello Spring!")
+  @Test
+  public void testTest()
+  {
+    WebClient webClient =
+        WebClient
+            .builder()
+            .clientConnector(new JettyClientHttpConnector())
+            .baseUrl(server.url("/").toString())
+            .filter((request, next) -> next.exchange(request).flatMap(response ->
+            {
+                                                       List<String> headerValues = response.headers().header("Foo");
+                                                       return headerValues.isEmpty() ? Mono.error(GraphApiException.create(response).block()) :
+                                                                       Mono.just(response);
+                                               }))
+            .build();
+
+    server
+        .enqueue(new MockResponse()
+            .setResponseCode(400)
+            .setHeader("Content-Type", "text/plain")
+            .setBody("Hello Spring!"));
+
+               Mono<String> result;
+
+    result = webClient.get()
+                               .uri("/greeting?name=Spring")
+                               .retrieve()
+        .onStatus(status -> status.is4xxClientError(), response -> GraphApiException.create(response))
+                               .bodyToMono(String.class);
+
+               StepVerifier.create(result)
+                               .expectError(Exception.class)
+                               .verify(Duration.ofSeconds(3));
+
+    server
+        .enqueue(new MockResponse()
+            .setResponseCode(200)
+            .setHeader("Content-Type", "text/plain")
+            .setHeader("Foo", "Bar")
+            .setBody("Hello Spring!"));
+
+               result = webClient.get()
+                               .uri("/greeting?name=Spring")
+                               .retrieve()
+                               .bodyToMono(String.class);
+
+               StepVerifier.create(result)
+                               .expectNext("Hello Spring!")
         .expectComplete()
-        .verify(Duration.ofSeconds(3));
-
-    Assert.assertEquals(2, server.getRequestCount());
+                               .verify(Duration.ofSeconds(3));
   }
 }