1/* 2 * Copyright (C) 2013 Square, Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16package com.squareup.okhttp; 17 18import java.io.ByteArrayOutputStream; 19import java.io.IOException; 20import java.net.URL; 21import java.util.ArrayList; 22import java.util.Iterator; 23import java.util.LinkedHashMap; 24import java.util.List; 25import java.util.Map; 26import java.util.concurrent.TimeUnit; 27 28/** 29 * Records received HTTP responses so they can be later retrieved by tests. 30 */ 31public class RecordingReceiver implements Response.Receiver { 32 public static final long TIMEOUT_MILLIS = TimeUnit.SECONDS.toMillis(10); 33 34 private final Map<Response, ByteArrayOutputStream> inFlightResponses 35 = new LinkedHashMap<Response, ByteArrayOutputStream>(); 36 private final List<RecordedResponse> responses = new ArrayList<RecordedResponse>(); 37 38 @Override public synchronized void onFailure(Failure failure) { 39 responses.add(new RecordedResponse(failure.request(), null, null, failure)); 40 notifyAll(); 41 } 42 43 @Override public synchronized boolean onResponse(Response response) throws IOException { 44 ByteArrayOutputStream out = inFlightResponses.get(response); 45 if (out == null) { 46 out = new ByteArrayOutputStream(); 47 inFlightResponses.put(response, out); 48 } 49 50 byte[] buffer = new byte[1024]; 51 Response.Body body = response.body(); 52 53 while (body.ready()) { 54 int c = body.byteStream().read(buffer); 55 56 if (c == -1) { 57 inFlightResponses.remove(response); 58 responses.add(new RecordedResponse( 59 response.request(), response, out.toString("UTF-8"), null)); 60 notifyAll(); 61 return true; 62 } 63 64 out.write(buffer, 0, c); 65 } 66 67 return false; 68 } 69 70 /** 71 * Returns the recorded response triggered by {@code request}. Throws if the 72 * response isn't enqueued before the timeout. 73 */ 74 public synchronized RecordedResponse await(URL url) throws Exception { 75 long timeoutMillis = TimeUnit.NANOSECONDS.toMillis(System.nanoTime()) + TIMEOUT_MILLIS; 76 while (true) { 77 for (Iterator<RecordedResponse> i = responses.iterator(); i.hasNext(); ) { 78 RecordedResponse recordedResponse = i.next(); 79 if (recordedResponse.request.url().equals(url)) { 80 i.remove(); 81 return recordedResponse; 82 } 83 } 84 85 long nowMillis = TimeUnit.NANOSECONDS.toMillis(System.nanoTime()); 86 if (nowMillis >= timeoutMillis) break; 87 wait(timeoutMillis - nowMillis); 88 } 89 90 throw new AssertionError("Timed out waiting for response to " + url); 91 } 92 93 public synchronized void assertNoResponse(URL url) throws Exception { 94 for (RecordedResponse recordedResponse : responses) { 95 if (recordedResponse.request.url().equals(url)) { 96 throw new AssertionError("Expected no response for " + url); 97 } 98 } 99 } 100} 101