// Copyright (c) 2012 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.

#include "skia/ext/skia_utils_ios.h"

#import <ImageIO/ImageIO.h>
#import <UIKit/UIKit.h>

#include "base/base64.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace {

typedef testing::Test SkiaUtilsIosTest;

// This is a base64 encoded version of google.com ico file. generated by
// curl http://www.google.com/favicon.ico | base64 -b 76
const char kIcoEncodedData[] =
  "AAABAAIAEBAAAAEAIABoBAAAJgAAACAgAAABACAAqBAAAI4EAAAoAAAAEAAAACAAAAABACAAAAAA"
  "AAAEAAASCwAAEgsAAAAAAAAAAAAA9IVCSvSFQuf0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/"
  "9IVC//SFQv/0hUL/9IVC//SFQv/0hULk9IVCSvSFQub0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0"
  "hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQuf0hUL/9IVC//SFQv/0hUL/9Y1O//rI"
  "q//+7+f//eXX//vUvf/7z7X/96Fu//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC"
  "//vYwv/97OH/9ZRZ//SFQv/0hUL/9IhG//zbx//3om7/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/"
  "9IVC//SFQv/97uX/+buW//SFQv/0hUL/9IVC//SFQv/5upT/+9O6//SFQv/0hUL/9IVC//SFQv/0"
  "hUL/9IVC//SFQv/0hUL/+b6b//zezP/0iEf/9IVC//SFQv/1klf//ezh//vPtP/0hUL/9IVC//SF"
  "Qv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/3qXr/+siq//m8lv/5wqD//vTu//3t4//1klb/9IVC"
  "//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0h0b//vbx//zi0//1j1H/"
  "9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/2nmn/+bmS/////v/4"
  "sIX/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/5uJH///v5//eo"
  "ef/1jU//+82y//afav/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL//vXw"
  "//vOs//0hUL/9IVC//ekcf/96+D/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/"
  "9IVC//728v/4sIX/9IVC//SFQv/4s4n///v4//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0"
  "hUL/9IVC//SFQv/6yKn/+byX//SFQv/0hkT//eTV//vWv//0hUL/9IVC//SFQv/0hUL/9IVC//SF"
  "Qv/0hUL/9IVC//SFQv/0hUL/9IZE//m6lP/5u5b//OHQ///+/f/6y6//96d3//SFQv/0hUL/9IVC"
  "//SFQv/0hULm9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/"
  "9IVC//SFQv/0hULm9IVCSfSFQub0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0"
  "hUL/9IVC//SFQv/0hULm9IVCSQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
  "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAoAAAAIAAAAEAAAAABACAAAAAAAAAQAAASCwAAEgsA"
  "AAAAAAAAAAAA9IVCAPSFQif0hUKt9IVC8vSFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/"
  "9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0"
  "hUL/9IVC//SFQvL0hUKt9IVCJ/SFQgD0hUIo9IVC7/SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SF"
  "Qv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC"
  "//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hULv9IVCKPSFQq30hUL/9IVC//SFQv/0hUL/"
  "9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0"
  "hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUKt9IVC8fSF"
  "Qv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC"
  "//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/"
  "9IVC//SFQvP0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9YtL//i2jv/8"
  "28f//vLr///7+P///Pv//vTu//3n2v/6zbH/96Nw//SFQ//0hUL/9IVC//SFQv/0hUL/9IVC//SF"
  "Qv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC"
  "//ekcv/+8+z////////////+9fD/+9K5//m9mf/4to7/+buV//vSuf/++PT//OPT//aYYP/0hUL/"
  "9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0"
  "hUL/9IVC//SFQv/2l13///r3/////////fv/+b2Z//SIRv/0hUL/9IVC//SFQv/0hUL/9IVC//WN"
  "T//84M///vXv//aZYf/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC"
  "//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//vPtP////////////i0i//0hUL/9IVC//SFQv/0hUL/"
  "9IVC//SFQv/0hUL/9IVC//WQUv///Pr//OPU//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0"
  "hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL//eTV///////+9O7/9IVD//SF"
  "Qv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//3m2P//////9ppi//SFQv/0hUL/9IVC"
  "//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/718H/"
  "//////3s4f/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL//vDn///////4"
  "soj/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SF"
  "Qv/0hUL/9IVC//erff////////38//WTWP/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC"
  "//iziv////////////iwhf/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/"
  "9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//rMsP///////eXW//WSVv/0hUL/9IVC//SFQv/0"
  "hUL/9IVC//SFQv/4sYb///z7/////////Pv/9ZFV//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SF"
  "Qv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//ixhv/+8Of//vn1"
  "//rMsP/4rH//9plh//WQUv/1j1L/+s2x//////////////////m9mf/0hUL/9IVC//SFQv/0hUL/"
  "9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0"
  "hUL/9IVC//SGQ//2nmn/+buW//vNsv/82sb//e3j/////////////////////v/5wZ//9IVC//SF"
  "Qv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC"
  "//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/83Mj////////////++fb/"
  "+K+C//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0"
  "hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9ZRZ////"
  "/////////vTt//aaYv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC"
  "//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/"
  "9IVC//SFQv/1lFr////////////6xqf/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0"
  "hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SF"
  "Qv/0hUL/9IVC//ehbf/70bj//end//3o2////v3///////3l1//0iEb/9IVC//SFQv/0hUL/9IVC"
  "//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/"
  "9IVC//SFQv/0hUL/9IVC//SFQv/5wqD////////////96t7/96Z2//WOUP/2nWf//NvH//zcyP/1"
  "i0z/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SF"
  "Qv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/96l6/////////////vLr//WPUf/0hUL/9IVC"
  "//SFQv/0h0b//end//3k1f/0iUn/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/"
  "9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/8387////////////4"
  "sYf/9IVC//SFQv/0hUL/9IVC//SFQv/6w6L///////nBn//0hUL/9IVC//SFQv/0hUL/9IVC//SF"
  "Qv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC"
  "///69////////vj1//SIR//0hUL/9IVC//SFQv/0hUL/9IVC//m+mv///////e3j//SFQv/0hUL/"
  "9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0"
  "hUL/9IVC//SFQv/0hUL///r3///////8387/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/+syw////"
  "///++fb/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC"
  "//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/95NX///////vUvP/0hUL/9IVC//SFQv/0hUL/"
  "9IVC//SFQv/97OH///////7y6//0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0"
  "hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//i2jv///////N/O//SF"
  "Qv/0hUL/9IVC//SFQv/0hUL/96Nx////////////+s2x//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC"
  "//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/"
  "9IdF//zh0P//+/j/9ZJW//SFQv/0hUL/9IVC//SKSv/96t7///////738v/1k1f/9IVC//SFQv/0"
  "hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SF"
  "Qv/0hUL/9IVC//SFQv/0hUL/9YxN//vUvf/96+D/96Z0//WNT//3om///ebY/////////Pv/+LKI"
  "//WVW//0h0X/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/"
  "9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//agbP/7zbL//enc//749P//"
  "//////////////////////////3r4P/3p3f/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SF"
  "Qv/0hULx9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC"
  "//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/"
  "9IVC//SFQv/0hUL/9IVC8/SFQq30hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0"
  "hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SF"
  "Qv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUKt9IVCJ/SFQu/0hUL/9IVC//SFQv/0hUL/9IVC"
  "//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/"
  "9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC7/SFQif0hUIA9IVCJfSFQq30"
  "hULx9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SF"
  "Qv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC//SFQv/0hUL/9IVC8fSFQq30hUIl9IVC"
  "AIAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
  "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
  "AAAAAAAAAAAAAACAAAAB";

NSData* IcoData() {
  std::string output;
  EXPECT_TRUE(base::Base64Decode(kIcoEncodedData, &output));
  return [NSData dataWithBytes:output.data() length:output.length()];
}

NSData* InvalidData(NSUInteger length) {
  NSMutableData* data=[NSMutableData dataWithLength:length];
  memset([data mutableBytes], 0xFF, length);
  return data;
}

TEST_F(SkiaUtilsIosTest, ImageDataToSkBitmaps) {
  std::vector<SkBitmap> bitmaps(gfx::ImageDataToSkBitmaps(IcoData()));

  EXPECT_EQ(2UL, bitmaps.size());
  EXPECT_EQ(32, bitmaps[0].width());
  EXPECT_EQ(32, bitmaps[0].height());
  EXPECT_EQ(16, bitmaps[1].width());
  EXPECT_EQ(16, bitmaps[1].height());
}

TEST_F(SkiaUtilsIosTest, InvalidDataFailure) {
  std::vector<SkBitmap> bitmaps1(gfx::ImageDataToSkBitmaps(InvalidData(1)));
  EXPECT_EQ(0UL, bitmaps1.size());
  std::vector<SkBitmap> bitmaps2(gfx::ImageDataToSkBitmaps(InvalidData(10)));
  EXPECT_EQ(0UL, bitmaps2.size());
  std::vector<SkBitmap> bitmaps3(gfx::ImageDataToSkBitmaps(InvalidData(100)));
  EXPECT_EQ(0UL, bitmaps3.size());
  std::vector<SkBitmap> bitmaps4(gfx::ImageDataToSkBitmaps(InvalidData(1000)));
  EXPECT_EQ(0UL, bitmaps4.size());
  std::vector<SkBitmap> bitmaps5(gfx::ImageDataToSkBitmaps(InvalidData(5000)));
  EXPECT_EQ(0UL, bitmaps5.size());
}

TEST_F(SkiaUtilsIosTest, EmptyDataFailure) {
  std::vector<SkBitmap> bitmaps(gfx::ImageDataToSkBitmaps([NSData data]));

  EXPECT_EQ(0UL, bitmaps.size());
}

}  // namespace