[Cronet] Implement getOutputStream in CronetHttpURLConnection

components/cronet/android/test/javatests/src/org/chromium/net/urlconnection/CronetBufferedOutputStreamTest.java

Index: components/cronet/android/test/javatests/src/org/chromium/net/urlconnection/CronetBufferedOutputStreamTest.java
diff --git a/components/cronet/android/test/javatests/src/org/chromium/net/urlconnection/CronetBufferedOutputStreamTest.java b/components/cronet/android/test/javatests/src/org/chromium/net/urlconnection/CronetBufferedOutputStreamTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..79fd319ca86e1a1f023195c16c5dd74aa2628a92
--- /dev/null
+++ b/components/cronet/android/test/javatests/src/org/chromium/net/urlconnection/CronetBufferedOutputStreamTest.java
@@ -0,0 +1,112 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.net.urlconnection;
+
+import android.test.suitebuilder.annotation.SmallTest;
+
+import org.chromium.base.test.util.Feature;
+
+import org.chromium.net.CronetTestActivity;
+import org.chromium.net.CronetTestBase;
+import org.chromium.net.NativeTestServer;
+import org.chromium.net.UploadDataSink;
+import org.chromium.net.UrlRequestContext;
+
+import java.net.URL;
+import java.nio.ByteBuffer;
+import java.util.Arrays;
+
+/**
+ * Tests the CronetBufferedOutputStream implementation.
+ */
+public class CronetBufferedOutputStreamTest extends CronetTestBase {
+    private CronetTestActivity mActivity;
+    private UrlRequestContext mUrlRequestContext;
+    private static final String UPLOAD_DATA = "some upload data!";
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+        mActivity = launchCronetTestApp();
+        mUrlRequestContext = mActivity.mUrlRequestContext;
+        assertTrue(NativeTestServer.startNativeTestServer(
+                getInstrumentation().getTargetContext()));
+    }
+
+    @Override
+    protected void tearDown() throws Exception {
+        NativeTestServer.shutdownNativeTestServer();
+        super.tearDown();
+    }
+
+    /**
+     * Tests that if caller writes more than the content length provided,
+     * an exception should occur.
+     */
+    @SmallTest
+    @Feature({"Cronet"})
+    public void testWriteBufferOutOfBound() throws Exception {
+        URL url = new URL(NativeTestServer.getEchoBodyURL());
+        CronetHttpURLConnection conn = new CronetHttpURLConnection(url,
+                mUrlRequestContext);
+        byte[] data = UPLOAD_DATA.getBytes("UTF8");
+        // Set a content length that is 1 byte shorter.
+        CronetBufferedOutputStream out =
+                new CronetBufferedOutputStream(conn, data.length - 1);
+        try {
+            out.write(data);
+            fail();
+        } catch (IllegalStateException e) {
+            assertEquals("Writing out of bound.", e.getMessage());
+        }
+    }
+
+    /**
+     * Tests that {@link CronetBufferedOutputStream} supports rewind.
+     */
+    @SmallTest
+    @Feature({"Cronet"})
+    public void testRewind() throws Exception {
+        URL url = new URL(NativeTestServer.getEchoBodyURL());
+        CronetHttpURLConnection conn = new CronetHttpURLConnection(url,
+                mUrlRequestContext);
+        byte[] data = UPLOAD_DATA.getBytes("UTF8");
+        CronetBufferedOutputStream out =
+                new CronetBufferedOutputStream(conn, data.length);
+        out.write(data);
+        TestUploadDataSink sink = new TestUploadDataSink();
+        out.rewind(sink);
+        assertTrue(sink.mRewindSucceededCalled);
+        ByteBuffer byteBuffer = ByteBuffer.allocate(data.length);
+        out.read(sink, byteBuffer);
+        assertTrue(sink.mReadSucceededCalled);
+        assertTrue(Arrays.equals(data, byteBuffer.array()));
+    }
+
+    private static class TestUploadDataSink implements UploadDataSink {
+        boolean mReadSucceededCalled = false;
+        boolean mRewindSucceededCalled = false;
+
+        @Override
+        public void onReadSucceeded(boolean finalChunk) {
+            mReadSucceededCalled = true;
+        }
+
+        @Override
+        public void onReadError(Exception exception) {
+            // Left blank.
+        }
+
+        @Override
+        public void onRewindSucceeded() {
+            mRewindSucceededCalled = true;
+        }
+
+        @Override
+        public void onRewindError(Exception e) {
+            // Left blank.
+        }
+    }
+}