components/image_fetcher/ios/ios_image_data_fetcher_wrapper_unittest.mm - chromium/src - Git at Google

 // Copyright 2011 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.

 #import "components/image_fetcher/ios/ios_image_data_fetcher_wrapper.h"

 #import <UIKit/UIKit.h>

 #include "base/ios/ios_util.h"
 #include "base/mac/scoped_block.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/run_loop.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #import "ios/web/public/image_fetcher/webp_decoder.h"
 #include "net/http/http_response_headers.h"
 #include "net/url_request/test_url_fetcher_factory.h"
 #include "net/url_request/url_fetcher_delegate.h"
 #include "net/url_request/url_request_test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"

 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif

 namespace {

 const unsigned char kJPGImage[] = {
     255, 216, 255, 224, 0,   16,  74,  70, 73, 70, 0,   1,   1,   1,   0,
     72,  0,   72,  0,   0,   255, 254, 0,  19, 67, 114, 101, 97,  116, 101,
     100, 32,  119, 105, 116, 104, 32,  71, 73, 77, 80,  255, 219, 0,   67,
     0,   5,   3,   4,   4,   4,   3,   5,  4,  4,  4,   5,   5,   5,   6,
     7,   12,  8,   7,   7,   7,   7,   15, 11, 11, 9,   12,  17,  15,  18,
     18,  17,  15,  17,  17,  19,  22,  28, 23, 19, 20,  26,  21,  17,  17,
     24,  33,  24,  26,  29,  29,  31,  31, 31, 19, 23,  34,  36,  34,  30,
     36,  28,  30,  31,  30,  255, 219, 0,  67, 1,  5,   5,   5,   7,   6,
     7,   14,  8,   8,   14,  30,  20,  17, 20, 30, 30,  30,  30,  30,  30,
     30,  30,  30,  30,  30,  30,  30,  30, 30, 30, 30,  30,  30,  30,  30,
     30,  30,  30,  30,  30,  30,  30,  30, 30, 30, 30,  30,  30,  30,  30,
     30,  30,  30,  30,  30,  30,  30,  30, 30, 30, 30,  30,  30,  30,  255,
     192, 0,   17,  8,   0,   1,   0,   1,  3,  1,  34,  0,   2,   17,  1,
     3,   17,  1,   255, 196, 0,   21,  0,  1,  1,  0,   0,   0,   0,   0,
     0,   0,   0,   0,   0,   0,   0,   0,  0,  0,  8,   255, 196, 0,   20,
     16,  1,   0,   0,   0,   0,   0,   0,  0,  0,  0,   0,   0,   0,   0,
     0,   0,   0,   255, 196, 0,   20,  1,  1,  0,  0,   0,   0,   0,   0,
     0,   0,   0,   0,   0,   0,   0,   0,  0,  0,  255, 196, 0,   20,  17,
     1,   0,   0,   0,   0,   0,   0,   0,  0,  0,  0,   0,   0,   0,   0,
     0,   0,   255, 218, 0,   12,  3,   1,  0,  2,  17,  3,   17,  0,   63,
     0,   178, 192, 7,   255, 217,
 };

 const unsigned char kPNGImage[] = {
     137, 80,  78,  71,  13,  10,  26,  10,  0,   0,   0,   13,  73,  72,  68,
     82,  0,   0,   0,   1,   0,   0,   0,   1,   1,   0,   0,   0,   0,   55,
     110, 249, 36,  0,   0,   0,   2,   98,  75,  71,  68,  0,   1,   221, 138,
     19,  164, 0,   0,   0,   9,   112, 72,  89,  115, 0,   0,   11,  18,  0,
     0,   11,  18,  1,   210, 221, 126, 252, 0,   0,   0,   9,   118, 112, 65,
     103, 0,   0,   0,   1,   0,   0,   0,   1,   0,   199, 149, 95,  237, 0,
     0,   0,   10,  73,  68,  65,  84,  8,   215, 99,  104, 0,   0,   0,   130,
     0,   129, 221, 67,  106, 244, 0,   0,   0,   25,  116, 69,  88,  116, 99,
     111, 109, 109, 101, 110, 116, 0,   67,  114, 101, 97,  116, 101, 100, 32,
     119, 105, 116, 104, 32,  71,  73,  77,  80,  231, 175, 64,  203, 0,   0,
     0,   37,  116, 69,  88,  116, 100, 97,  116, 101, 58,  99,  114, 101, 97,
     116, 101, 0,   50,  48,  49,  49,  45,  48,  54,  45,  50,  50,  84,  49,
     54,  58,  49,  54,  58,  52,  54,  43,  48,  50,  58,  48,  48,  31,  248,
     231, 223, 0,   0,   0,   37,  116, 69,  88,  116, 100, 97,  116, 101, 58,
     109, 111, 100, 105, 102, 121, 0,   50,  48,  49,  49,  45,  48,  54,  45,
     50,  50,  84,  49,  54,  58,  49,  54,  58,  52,  54,  43,  48,  50,  58,
     48,  48,  110, 165, 95,  99,  0,   0,   0,   17,  116, 69,  88,  116, 106,
     112, 101, 103, 58,  99,  111, 108, 111, 114, 115, 112, 97,  99,  101, 0,
     50,  44,  117, 85,  159, 0,   0,   0,   32,  116, 69,  88,  116, 106, 112,
     101, 103, 58,  115, 97,  109, 112, 108, 105, 110, 103, 45,  102, 97,  99,
     116, 111, 114, 0,   50,  120, 50,  44,  49,  120, 49,  44,  49,  120, 49,
     73,  250, 166, 180, 0,   0,   0,   0,   73,  69,  78,  68,  174, 66,  96,
     130,
 };

 const unsigned char kWEBPImage[] = {
     82, 73, 70, 70, 74,  0, 0,  0,   87,  69,  66,  80,  86,  80, 56, 88, 10,
     0,  0,  0,  16, 0,   0, 0,  0,   0,   0,   0,   0,   0,   65, 76, 80, 72,
     12, 0,  0,  0,  1,   7, 16, 17,  253, 15,  68,  68,  255, 3,  0,  0,  86,
     80, 56, 32, 24, 0,   0, 0,  48,  1,   0,   157, 1,   42,  1,  0,  1,  0,
     3,  0,  52, 37, 164, 0, 3,  112, 0,   254, 251, 253, 80,  0,
 };

 const char kTestUrl[] = "http://www.img.com";

 const char kWEBPHeaderResponse[] =
     "HTTP/1.1 200 OK\0Content-type: image/webp\0\0";

 // TODO(crbug.com/687921): Refactor this.
 class WebpDecoderDelegate : public webp_transcode::WebpDecoder::Delegate {
  public:
   WebpDecoderDelegate() = default;
   NSData* data() const { return decoded_image_; }

   void OnFinishedDecoding(bool success) override {}
   void SetImageFeatures(
       size_t total_size,
       webp_transcode::WebpDecoder::DecodedImageFormat format) override {
     decoded_image_ = [[NSMutableData alloc] initWithCapacity:total_size];
   }
   void OnDataDecoded(NSData* data) override {
     [decoded_image_ appendData:data];
   }

  private:
   ~WebpDecoderDelegate() override {}
   NSMutableData* decoded_image_;

   DISALLOW_COPY_AND_ASSIGN(WebpDecoderDelegate);
 };

 // Returns a NSData object containing the decoded image.
 NSData* DecodedWebpImage() {
   scoped_refptr<WebpDecoderDelegate> delegate(new WebpDecoderDelegate);
   scoped_refptr<webp_transcode::WebpDecoder> decoder(
       new webp_transcode::WebpDecoder(delegate.get()));
   decoder->OnDataReceived([NSData
       dataWithBytes:reinterpret_cast<const char*>(kWEBPImage)
              length:sizeof(kWEBPImage)]);
   return delegate->data();
 }

 }  // namespace

 namespace image_fetcher {

 class IOSImageDataFetcherWrapperTest : public PlatformTest {
  protected:
   IOSImageDataFetcherWrapperTest()
       : callback_([^(NSData* data) {
           result_data_ = data;
           result_ = [UIImage imageWithData:data];
           called_ = true;
         } copy]) {
     image_fetcher_ = base::MakeUnique<IOSImageDataFetcherWrapper>(
         new net::TestURLRequestContextGetter(message_loop_.task_runner()),
         message_loop_.task_runner());
   }

   net::TestURLFetcher* SetupFetcher() {
     image_fetcher_->FetchImageDataWebpDecoded(GURL(kTestUrl), callback_);
     EXPECT_EQ(nil, result_);
     EXPECT_EQ(false, called_);
     net::TestURLFetcher* fetcher = factory_.GetFetcherByID(0);
     DCHECK(fetcher);
     DCHECK(fetcher->delegate());
     return fetcher;
   }

   // Message loop for the main test thread.
   base::MessageLoop message_loop_;

   base::mac::ScopedBlock<IOSImageDataFetcherCallback> callback_;
   net::TestURLFetcherFactory factory_;
   std::unique_ptr<IOSImageDataFetcherWrapper> image_fetcher_;
   NSData* result_data_ = nil;
   UIImage* result_ = nil;
   bool called_ = false;

  private:
   DISALLOW_COPY_AND_ASSIGN(IOSImageDataFetcherWrapperTest);
 };

 TEST_F(IOSImageDataFetcherWrapperTest, TestError) {
   net::TestURLFetcher* fetcher = SetupFetcher();
   fetcher->set_response_code(404);
   fetcher->delegate()->OnURLFetchComplete(fetcher);
   EXPECT_EQ(nil, result_);
   EXPECT_TRUE(called_);
 }

 TEST_F(IOSImageDataFetcherWrapperTest, TestJpg) {
   net::TestURLFetcher* fetcher = SetupFetcher();
   fetcher->set_response_code(200);
   fetcher->SetResponseString(
       std::string(reinterpret_cast<const char*>(kJPGImage), sizeof(kJPGImage)));
   fetcher->delegate()->OnURLFetchComplete(fetcher);
   EXPECT_NE(nil, result_);
   EXPECT_TRUE(called_);
 }

 TEST_F(IOSImageDataFetcherWrapperTest, TestPng) {
   net::TestURLFetcher* fetcher = SetupFetcher();
   fetcher->set_response_code(200);
   fetcher->SetResponseString(
       std::string(reinterpret_cast<const char*>(kPNGImage), sizeof(kPNGImage)));
   fetcher->delegate()->OnURLFetchComplete(fetcher);
   EXPECT_NE(nil, result_);
   EXPECT_TRUE(called_);
 }

 TEST_F(IOSImageDataFetcherWrapperTest, TestGoodWebP) {
   net::TestURLFetcher* fetcher = SetupFetcher();
   fetcher->set_response_code(200);
   fetcher->SetResponseString(std::string(
       reinterpret_cast<const char*>(kWEBPImage), sizeof(kWEBPImage)));
   scoped_refptr<net::HttpResponseHeaders> headers(new net::HttpResponseHeaders(
       std::string(kWEBPHeaderResponse, arraysize(kWEBPHeaderResponse))));
   fetcher->set_response_headers(headers);
   fetcher->delegate()->OnURLFetchComplete(fetcher);
   base::RunLoop().RunUntilIdle();
   EXPECT_NE(nil, result_);
   EXPECT_TRUE(called_);
 }

 TEST_F(IOSImageDataFetcherWrapperTest, TestGoodWebPNoHeader) {
   net::TestURLFetcher* fetcher = SetupFetcher();
   fetcher->set_response_code(200);
   fetcher->SetResponseString(std::string(
       reinterpret_cast<const char*>(kWEBPImage), sizeof(kWEBPImage)));
   fetcher->delegate()->OnURLFetchComplete(fetcher);
   base::RunLoop().RunUntilIdle();
   EXPECT_TRUE([DecodedWebpImage() isEqualToData:result_data_]);
   EXPECT_TRUE(called_);
 }

 TEST_F(IOSImageDataFetcherWrapperTest, TestBadWebP) {
   net::TestURLFetcher* fetcher = SetupFetcher();
   fetcher->set_response_code(200);
   fetcher->SetResponseString("This is not a valid WebP image");
   scoped_refptr<net::HttpResponseHeaders> headers(new net::HttpResponseHeaders(
       std::string(kWEBPHeaderResponse, arraysize(kWEBPHeaderResponse))));
   fetcher->set_response_headers(headers);
   fetcher->delegate()->OnURLFetchComplete(fetcher);
   base::RunLoop().RunUntilIdle();
   EXPECT_EQ(nil, result_);
   EXPECT_TRUE(called_);
 }

 TEST_F(IOSImageDataFetcherWrapperTest, DeleteDuringWebPDecoding) {
   net::TestURLFetcher* fetcher = SetupFetcher();
   fetcher->set_response_code(200);
   fetcher->SetResponseString(std::string(
       reinterpret_cast<const char*>(kWEBPImage), sizeof(kWEBPImage)));
   fetcher->delegate()->OnURLFetchComplete(fetcher);
   // Delete the image fetcher, and check that the callback is called.
   image_fetcher_.reset();
   base::RunLoop().RunUntilIdle();
   EXPECT_TRUE([DecodedWebpImage() isEqualToData:result_data_]);
   EXPECT_TRUE(called_);
 }

 TEST_F(IOSImageDataFetcherWrapperTest, TestCallbacksNotCalledDuringDeletion) {
   image_fetcher_->FetchImageDataWebpDecoded(GURL(kTestUrl), callback_);
   image_fetcher_.reset();
   EXPECT_FALSE(called_);
 }

 }  // namespace image_fetcher
	// Copyright 2011 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.

	#import "components/image_fetcher/ios/ios_image_data_fetcher_wrapper.h"

	#import <UIKit/UIKit.h>

	#include "base/ios/ios_util.h"
	#include "base/mac/scoped_block.h"
	#include "base/macros.h"
	#include "base/memory/ptr_util.h"
	#include "base/memory/ref_counted.h"
	#include "base/run_loop.h"
	#include "base/threading/thread.h"
	#include "base/threading/thread_task_runner_handle.h"
	#include "build/build_config.h"
	#import "ios/web/public/image_fetcher/webp_decoder.h"
	#include "net/http/http_response_headers.h"
	#include "net/url_request/test_url_fetcher_factory.h"
	#include "net/url_request/url_fetcher_delegate.h"
	#include "net/url_request/url_request_test_util.h"
	#include "testing/gtest/include/gtest/gtest.h"
	#include "testing/platform_test.h"

	#if !defined(__has_feature) \|\| !__has_feature(objc_arc)
	#error "This file requires ARC support."
	#endif

	namespace {

	const unsigned char kJPGImage[] = {
	255, 216, 255, 224, 0, 16, 74, 70, 73, 70, 0, 1, 1, 1, 0,
	72, 0, 72, 0, 0, 255, 254, 0, 19, 67, 114, 101, 97, 116, 101,
	100, 32, 119, 105, 116, 104, 32, 71, 73, 77, 80, 255, 219, 0, 67,
	0, 5, 3, 4, 4, 4, 3, 5, 4, 4, 4, 5, 5, 5, 6,
	7, 12, 8, 7, 7, 7, 7, 15, 11, 11, 9, 12, 17, 15, 18,
	18, 17, 15, 17, 17, 19, 22, 28, 23, 19, 20, 26, 21, 17, 17,
	24, 33, 24, 26, 29, 29, 31, 31, 31, 19, 23, 34, 36, 34, 30,
	36, 28, 30, 31, 30, 255, 219, 0, 67, 1, 5, 5, 5, 7, 6,
	7, 14, 8, 8, 14, 30, 20, 17, 20, 30, 30, 30, 30, 30, 30,
	30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,
	30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30,
	30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 255,
	192, 0, 17, 8, 0, 1, 0, 1, 3, 1, 34, 0, 2, 17, 1,
	3, 17, 1, 255, 196, 0, 21, 0, 1, 1, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 255, 196, 0, 20,
	16, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 255, 196, 0, 20, 1, 1, 0, 0, 0, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 255, 196, 0, 20, 17,
	1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
	0, 0, 255, 218, 0, 12, 3, 1, 0, 2, 17, 3, 17, 0, 63,
	0, 178, 192, 7, 255, 217,
	};

	const unsigned char kPNGImage[] = {
	137, 80, 78, 71, 13, 10, 26, 10, 0, 0, 0, 13, 73, 72, 68,
	82, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 55,
	110, 249, 36, 0, 0, 0, 2, 98, 75, 71, 68, 0, 1, 221, 138,
	19, 164, 0, 0, 0, 9, 112, 72, 89, 115, 0, 0, 11, 18, 0,
	0, 11, 18, 1, 210, 221, 126, 252, 0, 0, 0, 9, 118, 112, 65,
	103, 0, 0, 0, 1, 0, 0, 0, 1, 0, 199, 149, 95, 237, 0,
	0, 0, 10, 73, 68, 65, 84, 8, 215, 99, 104, 0, 0, 0, 130,
	0, 129, 221, 67, 106, 244, 0, 0, 0, 25, 116, 69, 88, 116, 99,
	111, 109, 109, 101, 110, 116, 0, 67, 114, 101, 97, 116, 101, 100, 32,
	119, 105, 116, 104, 32, 71, 73, 77, 80, 231, 175, 64, 203, 0, 0,
	0, 37, 116, 69, 88, 116, 100, 97, 116, 101, 58, 99, 114, 101, 97,
	116, 101, 0, 50, 48, 49, 49, 45, 48, 54, 45, 50, 50, 84, 49,
	54, 58, 49, 54, 58, 52, 54, 43, 48, 50, 58, 48, 48, 31, 248,
	231, 223, 0, 0, 0, 37, 116, 69, 88, 116, 100, 97, 116, 101, 58,
	109, 111, 100, 105, 102, 121, 0, 50, 48, 49, 49, 45, 48, 54, 45,
	50, 50, 84, 49, 54, 58, 49, 54, 58, 52, 54, 43, 48, 50, 58,
	48, 48, 110, 165, 95, 99, 0, 0, 0, 17, 116, 69, 88, 116, 106,
	112, 101, 103, 58, 99, 111, 108, 111, 114, 115, 112, 97, 99, 101, 0,
	50, 44, 117, 85, 159, 0, 0, 0, 32, 116, 69, 88, 116, 106, 112,
	101, 103, 58, 115, 97, 109, 112, 108, 105, 110, 103, 45, 102, 97, 99,
	116, 111, 114, 0, 50, 120, 50, 44, 49, 120, 49, 44, 49, 120, 49,
	73, 250, 166, 180, 0, 0, 0, 0, 73, 69, 78, 68, 174, 66, 96,
	130,
	};

	const unsigned char kWEBPImage[] = {
	82, 73, 70, 70, 74, 0, 0, 0, 87, 69, 66, 80, 86, 80, 56, 88, 10,
	0, 0, 0, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 65, 76, 80, 72,
	12, 0, 0, 0, 1, 7, 16, 17, 253, 15, 68, 68, 255, 3, 0, 0, 86,
	80, 56, 32, 24, 0, 0, 0, 48, 1, 0, 157, 1, 42, 1, 0, 1, 0,
	3, 0, 52, 37, 164, 0, 3, 112, 0, 254, 251, 253, 80, 0,
	};

	const char kTestUrl[] = "http://www.img.com";

	const char kWEBPHeaderResponse[] =
	"HTTP/1.1 200 OK\0Content-type: image/webp\0\0";

	// TODO(crbug.com/687921): Refactor this.
	class WebpDecoderDelegate : public webp_transcode::WebpDecoder::Delegate {
	public:
	WebpDecoderDelegate() = default;
	NSData* data() const { return decoded_image_; }

	void OnFinishedDecoding(bool success) override {}
	void SetImageFeatures(
	size_t total_size,
	webp_transcode::WebpDecoder::DecodedImageFormat format) override {
	decoded_image_ = [[NSMutableData alloc] initWithCapacity:total_size];
	}
	void OnDataDecoded(NSData* data) override {
	[decoded_image_ appendData:data];
	}

	private:
	~WebpDecoderDelegate() override {}
	NSMutableData* decoded_image_;

	DISALLOW_COPY_AND_ASSIGN(WebpDecoderDelegate);
	};

	// Returns a NSData object containing the decoded image.
	NSData* DecodedWebpImage() {
	scoped_refptr<WebpDecoderDelegate> delegate(new WebpDecoderDelegate);
	scoped_refptr<webp_transcode::WebpDecoder> decoder(
	new webp_transcode::WebpDecoder(delegate.get()));
	decoder->OnDataReceived([NSData
	dataWithBytes:reinterpret_cast<const char*>(kWEBPImage)
	length:sizeof(kWEBPImage)]);
	return delegate->data();
	}

	} // namespace

	namespace image_fetcher {

	class IOSImageDataFetcherWrapperTest : public PlatformTest {
	protected:
	IOSImageDataFetcherWrapperTest()
	: callback_([^(NSData* data) {
	result_data_ = data;
	result_ = [UIImage imageWithData:data];
	called_ = true;
	} copy]) {
	image_fetcher_ = base::MakeUnique<IOSImageDataFetcherWrapper>(
	new net::TestURLRequestContextGetter(message_loop_.task_runner()),
	message_loop_.task_runner());
	}

	net::TestURLFetcher* SetupFetcher() {
	image_fetcher_->FetchImageDataWebpDecoded(GURL(kTestUrl), callback_);
	EXPECT_EQ(nil, result_);
	EXPECT_EQ(false, called_);
	net::TestURLFetcher* fetcher = factory_.GetFetcherByID(0);
	DCHECK(fetcher);
	DCHECK(fetcher->delegate());
	return fetcher;
	}

	// Message loop for the main test thread.
	base::MessageLoop message_loop_;

	base::mac::ScopedBlock<IOSImageDataFetcherCallback> callback_;
	net::TestURLFetcherFactory factory_;
	std::unique_ptr<IOSImageDataFetcherWrapper> image_fetcher_;
	NSData* result_data_ = nil;
	UIImage* result_ = nil;
	bool called_ = false;

	private:
	DISALLOW_COPY_AND_ASSIGN(IOSImageDataFetcherWrapperTest);
	};

	TEST_F(IOSImageDataFetcherWrapperTest, TestError) {
	net::TestURLFetcher* fetcher = SetupFetcher();
	fetcher->set_response_code(404);
	fetcher->delegate()->OnURLFetchComplete(fetcher);
	EXPECT_EQ(nil, result_);
	EXPECT_TRUE(called_);
	}

	TEST_F(IOSImageDataFetcherWrapperTest, TestJpg) {
	net::TestURLFetcher* fetcher = SetupFetcher();
	fetcher->set_response_code(200);
	fetcher->SetResponseString(
	std::string(reinterpret_cast<const char*>(kJPGImage), sizeof(kJPGImage)));
	fetcher->delegate()->OnURLFetchComplete(fetcher);
	EXPECT_NE(nil, result_);
	EXPECT_TRUE(called_);
	}

	TEST_F(IOSImageDataFetcherWrapperTest, TestPng) {
	net::TestURLFetcher* fetcher = SetupFetcher();
	fetcher->set_response_code(200);
	fetcher->SetResponseString(
	std::string(reinterpret_cast<const char*>(kPNGImage), sizeof(kPNGImage)));
	fetcher->delegate()->OnURLFetchComplete(fetcher);
	EXPECT_NE(nil, result_);
	EXPECT_TRUE(called_);
	}

	TEST_F(IOSImageDataFetcherWrapperTest, TestGoodWebP) {
	net::TestURLFetcher* fetcher = SetupFetcher();
	fetcher->set_response_code(200);
	fetcher->SetResponseString(std::string(
	reinterpret_cast<const char*>(kWEBPImage), sizeof(kWEBPImage)));
	scoped_refptr<net::HttpResponseHeaders> headers(new net::HttpResponseHeaders(
	std::string(kWEBPHeaderResponse, arraysize(kWEBPHeaderResponse))));
	fetcher->set_response_headers(headers);
	fetcher->delegate()->OnURLFetchComplete(fetcher);
	base::RunLoop().RunUntilIdle();
	EXPECT_NE(nil, result_);
	EXPECT_TRUE(called_);
	}

	TEST_F(IOSImageDataFetcherWrapperTest, TestGoodWebPNoHeader) {
	net::TestURLFetcher* fetcher = SetupFetcher();
	fetcher->set_response_code(200);
	fetcher->SetResponseString(std::string(
	reinterpret_cast<const char*>(kWEBPImage), sizeof(kWEBPImage)));
	fetcher->delegate()->OnURLFetchComplete(fetcher);
	base::RunLoop().RunUntilIdle();
	EXPECT_TRUE([DecodedWebpImage() isEqualToData:result_data_]);
	EXPECT_TRUE(called_);
	}

	TEST_F(IOSImageDataFetcherWrapperTest, TestBadWebP) {
	net::TestURLFetcher* fetcher = SetupFetcher();
	fetcher->set_response_code(200);
	fetcher->SetResponseString("This is not a valid WebP image");
	scoped_refptr<net::HttpResponseHeaders> headers(new net::HttpResponseHeaders(
	std::string(kWEBPHeaderResponse, arraysize(kWEBPHeaderResponse))));
	fetcher->set_response_headers(headers);
	fetcher->delegate()->OnURLFetchComplete(fetcher);
	base::RunLoop().RunUntilIdle();
	EXPECT_EQ(nil, result_);
	EXPECT_TRUE(called_);
	}

	TEST_F(IOSImageDataFetcherWrapperTest, DeleteDuringWebPDecoding) {
	net::TestURLFetcher* fetcher = SetupFetcher();
	fetcher->set_response_code(200);
	fetcher->SetResponseString(std::string(
	reinterpret_cast<const char*>(kWEBPImage), sizeof(kWEBPImage)));
	fetcher->delegate()->OnURLFetchComplete(fetcher);
	// Delete the image fetcher, and check that the callback is called.
	image_fetcher_.reset();
	base::RunLoop().RunUntilIdle();
	EXPECT_TRUE([DecodedWebpImage() isEqualToData:result_data_]);
	EXPECT_TRUE(called_);
	}

	TEST_F(IOSImageDataFetcherWrapperTest, TestCallbacksNotCalledDuringDeletion) {
	image_fetcher_->FetchImageDataWebpDecoded(GURL(kTestUrl), callback_);
	image_fetcher_.reset();
	EXPECT_FALSE(called_);
	}

	} // namespace image_fetcher