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Unified Diff: remoting/host/differ_unittest.cc

Issue 11470028: Move screen capturers to remoting/capturer. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 8 years ago
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Index: remoting/host/differ_unittest.cc
diff --git a/remoting/host/differ_unittest.cc b/remoting/host/differ_unittest.cc
deleted file mode 100644
index 6ddd722183131c8989bb4031014dec387faba9d2..0000000000000000000000000000000000000000
--- a/remoting/host/differ_unittest.cc
+++ /dev/null
@@ -1,639 +0,0 @@
-// Copyright (c) 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.
-
-#include "base/memory/scoped_ptr.h"
-#include "remoting/host/differ.h"
-#include "remoting/host/differ_block.h"
-#include "testing/gmock/include/gmock/gmock.h"
-
-namespace remoting {
-
-// 96x96 screen gives a 4x4 grid of blocks.
-const int kScreenWidth= 96;
-const int kScreenHeight = 96;
-
-// To test partial blocks, we need a width and height that are not multiples
-// of 16 (or 32, depending on current block size).
-const int kPartialScreenWidth = 70;
-const int kPartialScreenHeight = 70;
-
-class DifferTest : public testing::Test {
- public:
- DifferTest() {
- }
-
- protected:
- void InitDiffer(int width, int height) {
- width_ = width;
- height_ = height;
- bytes_per_pixel_ = kBytesPerPixel;
- stride_ = (kBytesPerPixel * width);
- buffer_size_ = width_ * height_ * bytes_per_pixel_;
-
- differ_.reset(new Differ(width_, height_, bytes_per_pixel_, stride_));
-
- prev_.reset(new uint8[buffer_size_]);
- memset(prev_.get(), 0, buffer_size_);
-
- curr_.reset(new uint8[buffer_size_]);
- memset(curr_.get(), 0, buffer_size_);
- }
-
- void ClearBuffer(uint8* buffer) {
- memset(buffer, 0, buffer_size_);
- }
-
- // Here in DifferTest so that tests can access private methods of Differ.
- void MarkDirtyBlocks(const void* prev_buffer, const void* curr_buffer) {
- differ_->MarkDirtyBlocks(prev_buffer, curr_buffer);
- }
-
- void MergeBlocks(SkRegion* dirty) {
- differ_->MergeBlocks(dirty);
- }
-
- // Convenience method to count rectangles in a region.
- int RegionRectCount(const SkRegion& region) {
- int count = 0;
- for(SkRegion::Iterator iter(region); !iter.done(); iter.next()) {
- ++count;
- }
- return count;
- }
-
- // Convenience wrapper for Differ's DiffBlock that calculates the appropriate
- // offset to the start of the desired block.
- DiffInfo DiffBlock(int block_x, int block_y) {
- // Offset from upper-left of buffer to upper-left of requested block.
- int block_offset = ((block_y * stride_) + (block_x * bytes_per_pixel_))
- * kBlockSize;
- return BlockDifference(prev_.get() + block_offset,
- curr_.get() + block_offset,
- stride_);
- }
-
- // Write the pixel |value| into the specified block in the |buffer|.
- // This is a convenience wrapper around WritePixel().
- void WriteBlockPixel(uint8* buffer, int block_x, int block_y,
- int pixel_x, int pixel_y, uint32 value) {
- WritePixel(buffer, (block_x * kBlockSize) + pixel_x,
- (block_y * kBlockSize) + pixel_y, value);
- }
-
- // Write the test pixel |value| into the |buffer| at the specified |x|,|y|
- // location.
- // Only the low-order bytes from |value| are written (assuming little-endian).
- // So, for |value| = 0xaabbccdd:
- // If bytes_per_pixel = 4, then ddccbbaa will be written as the pixel value.
- // If = 3, ddccbb
- // If = 2, ddcc
- // If = 1, dd
- void WritePixel(uint8* buffer, int x, int y, uint32 value) {
- uint8* pixel = reinterpret_cast<uint8*>(&value);
- buffer += (y * stride_) + (x * bytes_per_pixel_);
- for (int b = bytes_per_pixel_ - 1; b >= 0; b--) {
- *buffer++ = pixel[b];
- }
- }
-
- // DiffInfo utility routines.
- // These are here so that we don't have to make each DifferText_Xxx_Test
- // class a friend class to Differ.
-
- // Clear out the entire |diff_info_| buffer.
- void ClearDiffInfo() {
- memset(differ_->diff_info_.get(), 0, differ_->diff_info_size_);
- }
-
- // Get the value in the |diff_info_| array at (x,y).
- DiffInfo GetDiffInfo(int x, int y) {
- DiffInfo* diff_info = differ_->diff_info_.get();
- return diff_info[(y * GetDiffInfoWidth()) + x];
- }
-
- // Width of |diff_info_| array.
- int GetDiffInfoWidth() {
- return differ_->diff_info_width_;
- }
-
- // Height of |diff_info_| array.
- int GetDiffInfoHeight() {
- return differ_->diff_info_height_;
- }
-
- // Size of |diff_info_| array.
- int GetDiffInfoSize() {
- return differ_->diff_info_size_;
- }
-
- void SetDiffInfo(int x, int y, const DiffInfo& value) {
- DiffInfo* diff_info = differ_->diff_info_.get();
- diff_info[(y * GetDiffInfoWidth()) + x] = value;
- }
-
- // Mark the range of blocks specified.
- void MarkBlocks(int x_origin, int y_origin, int width, int height) {
- for (int y = 0; y < height; y++) {
- for (int x = 0; x < width; x++) {
- SetDiffInfo(x_origin + x, y_origin + y, 1);
- }
- }
- }
-
- // Verify that |region| contains a rectangle defined by |x|, |y|, |width| and
- // |height|.
- // |x|, |y|, |width| and |height| are specified in block (not pixel) units.
- bool CheckDirtyRegionContainsRect(const SkRegion& region, int x, int y,
- int width, int height) {
- SkIRect r = SkIRect::MakeXYWH(x * kBlockSize, y * kBlockSize,
- width * kBlockSize, height * kBlockSize);
- bool found = false;
- for (SkRegion::Iterator i(region); !found && !i.done(); i.next()) {
- found = (i.rect() == r);
- }
- return found;
- }
-
- // Mark the range of blocks specified and then verify that they are
- // merged correctly.
- // Only one rectangular region of blocks can be checked with this routine.
- bool MarkBlocksAndCheckMerge(int x_origin, int y_origin,
- int width, int height) {
- ClearDiffInfo();
- MarkBlocks(x_origin, y_origin, width, height);
-
- SkRegion dirty;
- MergeBlocks(&dirty);
-
- bool is_good = dirty.isRect();
- if (is_good) {
- is_good = CheckDirtyRegionContainsRect(dirty, x_origin, y_origin,
- width, height);
- }
- return is_good;
- }
-
- // The differ class we're testing.
- scoped_ptr<Differ> differ_;
-
- // Screen/buffer info.
- int width_;
- int height_;
- int bytes_per_pixel_;
- int stride_;
-
- // Size of each screen buffer.
- int buffer_size_;
-
- // Previous and current screen buffers.
- scoped_array<uint8> prev_;
- scoped_array<uint8> curr_;
-
- private:
- DISALLOW_COPY_AND_ASSIGN(DifferTest);
-};
-
-TEST_F(DifferTest, Setup) {
- InitDiffer(kScreenWidth, kScreenHeight);
- // 96x96 pixels results in 3x3 array. Add 1 to each dimension as boundary.
- // +---+---+---+---+
- // | o | o | o | _ |
- // +---+---+---+---+ o = blocks mapped to screen pixels
- // | o | o | o | _ |
- // +---+---+---+---+ _ = boundary blocks
- // | o | o | o | _ |
- // +---+---+---+---+
- // | _ | _ | _ | _ |
- // +---+---+---+---+
- EXPECT_EQ(4, GetDiffInfoWidth());
- EXPECT_EQ(4, GetDiffInfoHeight());
- EXPECT_EQ(16, GetDiffInfoSize());
-}
-
-TEST_F(DifferTest, MarkDirtyBlocks_All) {
- InitDiffer(kScreenWidth, kScreenHeight);
- ClearDiffInfo();
-
- // Update a pixel in each block.
- for (int y = 0; y < GetDiffInfoHeight() - 1; y++) {
- for (int x = 0; x < GetDiffInfoWidth() - 1; x++) {
- WriteBlockPixel(curr_.get(), x, y, 10, 10, 0xff00ff);
- }
- }
-
- MarkDirtyBlocks(prev_.get(), curr_.get());
-
- // Make sure each block is marked as dirty.
- for (int y = 0; y < GetDiffInfoHeight() - 1; y++) {
- for (int x = 0; x < GetDiffInfoWidth() - 1; x++) {
- EXPECT_EQ(1, GetDiffInfo(x, y))
- << "when x = " << x << ", and y = " << y;
- }
- }
-}
-
-TEST_F(DifferTest, MarkDirtyBlocks_Sampling) {
- InitDiffer(kScreenWidth, kScreenHeight);
- ClearDiffInfo();
-
- // Update some pixels in image.
- WriteBlockPixel(curr_.get(), 1, 0, 10, 10, 0xff00ff);
- WriteBlockPixel(curr_.get(), 2, 1, 10, 10, 0xff00ff);
- WriteBlockPixel(curr_.get(), 0, 2, 10, 10, 0xff00ff);
-
- MarkDirtyBlocks(prev_.get(), curr_.get());
-
- // Make sure corresponding blocks are updated.
- EXPECT_EQ(0, GetDiffInfo(0, 0));
- EXPECT_EQ(0, GetDiffInfo(0, 1));
- EXPECT_EQ(1, GetDiffInfo(0, 2));
- EXPECT_EQ(1, GetDiffInfo(1, 0));
- EXPECT_EQ(0, GetDiffInfo(1, 1));
- EXPECT_EQ(0, GetDiffInfo(1, 2));
- EXPECT_EQ(0, GetDiffInfo(2, 0));
- EXPECT_EQ(1, GetDiffInfo(2, 1));
- EXPECT_EQ(0, GetDiffInfo(2, 2));
-}
-
-TEST_F(DifferTest, DiffBlock) {
- InitDiffer(kScreenWidth, kScreenHeight);
-
- // Verify no differences at start.
- EXPECT_EQ(0, DiffBlock(0, 0));
- EXPECT_EQ(0, DiffBlock(1, 1));
-
- // Write new data into the 4 corners of the middle block and verify that
- // neighboring blocks are not affected.
- int max = kBlockSize - 1;
- WriteBlockPixel(curr_.get(), 1, 1, 0, 0, 0xffffff);
- WriteBlockPixel(curr_.get(), 1, 1, 0, max, 0xffffff);
- WriteBlockPixel(curr_.get(), 1, 1, max, 0, 0xffffff);
- WriteBlockPixel(curr_.get(), 1, 1, max, max, 0xffffff);
- EXPECT_EQ(0, DiffBlock(0, 0));
- EXPECT_EQ(0, DiffBlock(0, 1));
- EXPECT_EQ(0, DiffBlock(0, 2));
- EXPECT_EQ(0, DiffBlock(1, 0));
- EXPECT_EQ(1, DiffBlock(1, 1)); // Only this block should change.
- EXPECT_EQ(0, DiffBlock(1, 2));
- EXPECT_EQ(0, DiffBlock(2, 0));
- EXPECT_EQ(0, DiffBlock(2, 1));
- EXPECT_EQ(0, DiffBlock(2, 2));
-}
-
-TEST_F(DifferTest, Partial_Setup) {
- InitDiffer(kPartialScreenWidth, kPartialScreenHeight);
- // 70x70 pixels results in 3x3 array: 2x2 full blocks + partials around
- // the edge. One more is added to each dimension as a boundary.
- // +---+---+---+---+
- // | o | o | + | _ |
- // +---+---+---+---+ o = blocks mapped to screen pixels
- // | o | o | + | _ |
- // +---+---+---+---+ + = partial blocks (top/left mapped to screen pixels)
- // | + | + | + | _ |
- // +---+---+---+---+ _ = boundary blocks
- // | _ | _ | _ | _ |
- // +---+---+---+---+
- EXPECT_EQ(4, GetDiffInfoWidth());
- EXPECT_EQ(4, GetDiffInfoHeight());
- EXPECT_EQ(16, GetDiffInfoSize());
-}
-
-TEST_F(DifferTest, Partial_FirstPixel) {
- InitDiffer(kPartialScreenWidth, kPartialScreenHeight);
- ClearDiffInfo();
-
- // Update the first pixel in each block.
- for (int y = 0; y < GetDiffInfoHeight() - 1; y++) {
- for (int x = 0; x < GetDiffInfoWidth() - 1; x++) {
- WriteBlockPixel(curr_.get(), x, y, 0, 0, 0xff00ff);
- }
- }
-
- MarkDirtyBlocks(prev_.get(), curr_.get());
-
- // Make sure each block is marked as dirty.
- for (int y = 0; y < GetDiffInfoHeight() - 1; y++) {
- for (int x = 0; x < GetDiffInfoWidth() - 1; x++) {
- EXPECT_EQ(1, GetDiffInfo(x, y))
- << "when x = " << x << ", and y = " << y;
- }
- }
-}
-
-TEST_F(DifferTest, Partial_BorderPixel) {
- InitDiffer(kPartialScreenWidth, kPartialScreenHeight);
- ClearDiffInfo();
-
- // Update the right/bottom border pixels.
- for (int y = 0; y < height_; y++) {
- WritePixel(curr_.get(), width_ - 1, y, 0xff00ff);
- }
- for (int x = 0; x < width_; x++) {
- WritePixel(curr_.get(), x, height_ - 1, 0xff00ff);
- }
-
- MarkDirtyBlocks(prev_.get(), curr_.get());
-
- // Make sure last (partial) block in each row/column is marked as dirty.
- int x_last = GetDiffInfoWidth() - 2;
- for (int y = 0; y < GetDiffInfoHeight() - 1; y++) {
- EXPECT_EQ(1, GetDiffInfo(x_last, y))
- << "when x = " << x_last << ", and y = " << y;
- }
- int y_last = GetDiffInfoHeight() - 2;
- for (int x = 0; x < GetDiffInfoWidth() - 1; x++) {
- EXPECT_EQ(1, GetDiffInfo(x, y_last))
- << "when x = " << x << ", and y = " << y_last;
- }
- // All other blocks are clean.
- for (int y = 0; y < GetDiffInfoHeight() - 2; y++) {
- for (int x = 0; x < GetDiffInfoWidth() - 2; x++) {
- EXPECT_EQ(0, GetDiffInfo(x, y)) << "when x = " << x << ", and y = " << y;
- }
- }
-}
-
-TEST_F(DifferTest, MergeBlocks_Empty) {
- InitDiffer(kScreenWidth, kScreenHeight);
-
- // No blocks marked:
- // +---+---+---+---+
- // | | | | _ |
- // +---+---+---+---+
- // | | | | _ |
- // +---+---+---+---+
- // | | | | _ |
- // +---+---+---+---+
- // | _ | _ | _ | _ |
- // +---+---+---+---+
- ClearDiffInfo();
-
- SkRegion dirty;
- MergeBlocks(&dirty);
-
- EXPECT_TRUE(dirty.isEmpty());
-}
-
-TEST_F(DifferTest, MergeBlocks_SingleBlock) {
- InitDiffer(kScreenWidth, kScreenHeight);
- // Mark a single block and make sure that there is a single merged
- // rect with the correct bounds.
- for (int y = 0; y < GetDiffInfoHeight() - 1; y++) {
- for (int x = 0; x < GetDiffInfoWidth() - 1; x++) {
- ASSERT_TRUE(MarkBlocksAndCheckMerge(x, y, 1, 1)) << "x: " << x
- << "y: " << y;
- }
- }
-}
-
-TEST_F(DifferTest, MergeBlocks_BlockRow) {
- InitDiffer(kScreenWidth, kScreenHeight);
-
- // +---+---+---+---+
- // | X | X | | _ |
- // +---+---+---+---+
- // | | | | _ |
- // +---+---+---+---+
- // | | | | _ |
- // +---+---+---+---+
- // | _ | _ | _ | _ |
- // +---+---+---+---+
- ASSERT_TRUE(MarkBlocksAndCheckMerge(0, 0, 2, 1));
-
- // +---+---+---+---+
- // | | | | _ |
- // +---+---+---+---+
- // | X | X | X | _ |
- // +---+---+---+---+
- // | | | | _ |
- // +---+---+---+---+
- // | _ | _ | _ | _ |
- // +---+---+---+---+
- ASSERT_TRUE(MarkBlocksAndCheckMerge(0, 1, 3, 1));
-
- // +---+---+---+---+
- // | | | | _ |
- // +---+---+---+---+
- // | | | | _ |
- // +---+---+---+---+
- // | | X | X | _ |
- // +---+---+---+---+
- // | _ | _ | _ | _ |
- // +---+---+---+---+
- ASSERT_TRUE(MarkBlocksAndCheckMerge(1, 2, 2, 1));
-}
-
-TEST_F(DifferTest, MergeBlocks_BlockColumn) {
- InitDiffer(kScreenWidth, kScreenHeight);
-
- // +---+---+---+---+
- // | X | | | _ |
- // +---+---+---+---+
- // | X | | | _ |
- // +---+---+---+---+
- // | | | | _ |
- // +---+---+---+---+
- // | _ | _ | _ | _ |
- // +---+---+---+---+
- ASSERT_TRUE(MarkBlocksAndCheckMerge(0, 0, 1, 2));
-
- // +---+---+---+---+
- // | | | | _ |
- // +---+---+---+---+
- // | | X | | _ |
- // +---+---+---+---+
- // | | X | | _ |
- // +---+---+---+---+
- // | _ | _ | _ | _ |
- // +---+---+---+---+
- ASSERT_TRUE(MarkBlocksAndCheckMerge(1, 1, 1, 2));
-
- // +---+---+---+---+
- // | | | X | _ |
- // +---+---+---+---+
- // | | | X | _ |
- // +---+---+---+---+
- // | | | X | _ |
- // +---+---+---+---+
- // | _ | _ | _ | _ |
- // +---+---+---+---+
- ASSERT_TRUE(MarkBlocksAndCheckMerge(2, 0, 1, 3));
-}
-
-TEST_F(DifferTest, MergeBlocks_BlockRect) {
- InitDiffer(kScreenWidth, kScreenHeight);
-
- // +---+---+---+---+
- // | X | X | | _ |
- // +---+---+---+---+
- // | X | X | | _ |
- // +---+---+---+---+
- // | | | | _ |
- // +---+---+---+---+
- // | _ | _ | _ | _ |
- // +---+---+---+---+
- ASSERT_TRUE(MarkBlocksAndCheckMerge(0, 0, 2, 2));
-
- // +---+---+---+---+
- // | | | | _ |
- // +---+---+---+---+
- // | | X | X | _ |
- // +---+---+---+---+
- // | | X | X | _ |
- // +---+---+---+---+
- // | _ | _ | _ | _ |
- // +---+---+---+---+
- ASSERT_TRUE(MarkBlocksAndCheckMerge(1, 1, 2, 2));
-
- // +---+---+---+---+
- // | | X | X | _ |
- // +---+---+---+---+
- // | | X | X | _ |
- // +---+---+---+---+
- // | | X | X | _ |
- // +---+---+---+---+
- // | _ | _ | _ | _ |
- // +---+---+---+---+
- ASSERT_TRUE(MarkBlocksAndCheckMerge(1, 0, 2, 3));
-
- // +---+---+---+---+
- // | | | | _ |
- // +---+---+---+---+
- // | X | X | X | _ |
- // +---+---+---+---+
- // | X | X | X | _ |
- // +---+---+---+---+
- // | _ | _ | _ | _ |
- // +---+---+---+---+
- ASSERT_TRUE(MarkBlocksAndCheckMerge(0, 1, 3, 2));
-
- // +---+---+---+---+
- // | X | X | X | _ |
- // +---+---+---+---+
- // | X | X | X | _ |
- // +---+---+---+---+
- // | X | X | X | _ |
- // +---+---+---+---+
- // | _ | _ | _ | _ |
- // +---+---+---+---+
- ASSERT_TRUE(MarkBlocksAndCheckMerge(0, 0, 3, 3));
-}
-
-// This tests marked regions that require more than 1 single dirty rect.
-// The exact rects returned depend on the current implementation, so these
-// may need to be updated if we modify how we merge blocks.
-TEST_F(DifferTest, MergeBlocks_MultiRect) {
- InitDiffer(kScreenWidth, kScreenHeight);
- SkRegion dirty;
-
- // +---+---+---+---+ +---+---+---+
- // | | X | | _ | | | 0 | |
- // +---+---+---+---+ +---+---+---+
- // | X | | | _ | | 1 | | |
- // +---+---+---+---+ => +---+---+---+
- // | | | X | _ | | | | 2 |
- // +---+---+---+---+ +---+---+---+
- // | _ | _ | _ | _ |
- // +---+---+---+---+
- ClearDiffInfo();
- MarkBlocks(1, 0, 1, 1);
- MarkBlocks(0, 1, 1, 1);
- MarkBlocks(2, 2, 1, 1);
-
- dirty.setEmpty();
- MergeBlocks(&dirty);
-
- ASSERT_EQ(3, RegionRectCount(dirty));
- ASSERT_TRUE(CheckDirtyRegionContainsRect(dirty, 1, 0, 1, 1));
- ASSERT_TRUE(CheckDirtyRegionContainsRect(dirty, 0, 1, 1, 1));
- ASSERT_TRUE(CheckDirtyRegionContainsRect(dirty, 2, 2, 1, 1));
-
- // +---+---+---+---+ +---+---+---+
- // | | | X | _ | | | | 0 |
- // +---+---+---+---+ +---+---+---+
- // | X | X | X | _ | | 1 1 1 |
- // +---+---+---+---+ => + +
- // | X | X | X | _ | | 1 1 1 |
- // +---+---+---+---+ +---+---+---+
- // | _ | _ | _ | _ |
- // +---+---+---+---+
- ClearDiffInfo();
- MarkBlocks(2, 0, 1, 1);
- MarkBlocks(0, 1, 3, 2);
-
- dirty.setEmpty();
- MergeBlocks(&dirty);
-
- ASSERT_EQ(2, RegionRectCount(dirty));
- ASSERT_TRUE(CheckDirtyRegionContainsRect(dirty, 2, 0, 1, 1));
- ASSERT_TRUE(CheckDirtyRegionContainsRect(dirty, 0, 1, 3, 2));
-
- // +---+---+---+---+ +---+---+---+
- // | | | | _ | | | | |
- // +---+---+---+---+ +---+---+---+
- // | X | | X | _ | | 0 | | 1 |
- // +---+---+---+---+ => + +---+ +
- // | X | X | X | _ | | 2 | 2 | 2 |
- // +---+---+---+---+ +---+---+---+
- // | _ | _ | _ | _ |
- // +---+---+---+---+
- ClearDiffInfo();
- MarkBlocks(0, 1, 1, 1);
- MarkBlocks(2, 1, 1, 1);
- MarkBlocks(0, 2, 3, 1);
-
- dirty.setEmpty();
- MergeBlocks(&dirty);
-
- ASSERT_EQ(3, RegionRectCount(dirty));
- ASSERT_TRUE(CheckDirtyRegionContainsRect(dirty, 0, 1, 1, 1));
- ASSERT_TRUE(CheckDirtyRegionContainsRect(dirty, 2, 1, 1, 1));
- ASSERT_TRUE(CheckDirtyRegionContainsRect(dirty, 0, 2, 3, 1));
-
- // +---+---+---+---+ +---+---+---+
- // | X | X | X | _ | | 0 0 0 |
- // +---+---+---+---+ +---+---+---+
- // | X | | X | _ | | 1 | | 2 |
- // +---+---+---+---+ => + +---+ +
- // | X | X | X | _ | | 3 | 3 | 3 |
- // +---+---+---+---+ +---+---+---+
- // | _ | _ | _ | _ |
- // +---+---+---+---+
- ClearDiffInfo();
- MarkBlocks(0, 0, 3, 1);
- MarkBlocks(0, 1, 1, 1);
- MarkBlocks(2, 1, 1, 1);
- MarkBlocks(0, 2, 3, 1);
-
- dirty.setEmpty();
- MergeBlocks(&dirty);
-
- ASSERT_EQ(4, RegionRectCount(dirty));
- ASSERT_TRUE(CheckDirtyRegionContainsRect(dirty, 0, 0, 3, 1));
- ASSERT_TRUE(CheckDirtyRegionContainsRect(dirty, 0, 1, 1, 1));
- ASSERT_TRUE(CheckDirtyRegionContainsRect(dirty, 2, 1, 1, 1));
- ASSERT_TRUE(CheckDirtyRegionContainsRect(dirty, 0, 2, 3, 1));
-
- // +---+---+---+---+ +---+---+---+
- // | X | X | | _ | | 0 0 | |
- // +---+---+---+---+ + +---+
- // | X | X | | _ | | 0 0 | |
- // +---+---+---+---+ => +---+---+---+
- // | | X | | _ | | | 1 | |
- // +---+---+---+---+ +---+---+---+
- // | _ | _ | _ | _ |
- // +---+---+---+---+
- ClearDiffInfo();
- MarkBlocks(0, 0, 2, 2);
- MarkBlocks(1, 2, 1, 1);
-
- dirty.setEmpty();
- MergeBlocks(&dirty);
-
- ASSERT_EQ(2, RegionRectCount(dirty));
- ASSERT_TRUE(CheckDirtyRegionContainsRect(dirty, 0, 0, 2, 2));
- ASSERT_TRUE(CheckDirtyRegionContainsRect(dirty, 1, 2, 1, 1));
-}
-
-} // namespace remoting
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