1
    2
    3
    4
    5
    6
    7
    8
    9
   10
   11
   12
   13
   14
   15
   16
   17
   18
   19
   20
   21
   22
   23
   24
   25
   26
   27
   28
   29
   30
   31
   32
   33
   34
   35
   36
   37
   38
   39
   40
   41
   42
   43
   44
   45
   46
   47
   48
   49
   50
   51
   52
   53
   54
   55
   56
   57
   58
   59
   60
   61
   62
   63
   64
   65
   66
   67
   68
   69
   70
   71
   72
   73
   74
   75
   76
   77
   78
   79
   80
   81
   82
   83
   84
   85
   86
   87
   88
   89
   90
   91
   92
   93
   94
   95
   96
   97
   98
   99
  100
  101
  102
  103
  104
  105
  106
  107
  108
  109
  110
  111
  112
  113
  114
  115
  116
  117
  118
  119
  120
  121
  122
  123
  124


cc / paint / paint_op_writer_reader_unittest.cc [blame]

// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <vector>

#include "cc/paint/paint_op_reader.h"
#include "cc/paint/paint_op_writer.h"

#include "cc/test/test_options_provider.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace cc {

TEST(PaintOpWriterReaderTest, SizeT) {
  static_assert(PaintOpWriter::SerializedSize<int>() == 4u);
  static_assert(PaintOpWriter::SerializedSize<size_t>() == 8u);
  static_assert(PaintOpWriter::SerializedSize(static_cast<size_t>(0u)) == 8u);

  char buffer[128];
  TestOptionsProvider options_provider;
  memset(buffer, 0xa5, std::size(buffer));
  PaintOpWriter writer(buffer, std::size(buffer),
                       options_provider.serialize_options(),
                       /*enable_security_constraints*/ true);
  int i = 0x5555aaaa;
  size_t s1 = static_cast<size_t>(0x123456789abcdef0L);
  size_t s2 = static_cast<size_t>(0xfedcba9876543210L);
  writer.WriteSize(s1);
  writer.Write(i);
  writer.WriteSize(s2);
  EXPECT_EQ(20u, writer.size());

  PaintOpReader reader(buffer, writer.size(),
                       options_provider.deserialize_options(),
                       /*enable_security_constraints*/ true);
  int read_i;
  size_t read_s1, read_s2;
  reader.ReadSize(&read_s1);
  reader.Read(&read_i);
  reader.ReadSize(&read_s2);
  EXPECT_EQ(i, read_i);
  EXPECT_EQ(s1, read_s1);
  EXPECT_EQ(s2, read_s2);
  EXPECT_TRUE(reader.valid());
  EXPECT_EQ(0u, reader.remaining_bytes());

  reader.ReadSize(&read_s2);
  EXPECT_FALSE(reader.valid());
}

TEST(PaintOpWriterReaderTest, Vector) {
  char buffer[128];
  TestOptionsProvider options_provider;
  memset(buffer, 0xa5, std::size(buffer));
  PaintOpWriter writer(buffer, std::size(buffer),
                       options_provider.serialize_options(),
                       /*enable_security_constraints*/ true);

  writer.Write(std::vector<float>{});
  EXPECT_EQ(writer.size(), 8u);
  writer.Write(std::vector<float>{1, 2});
  EXPECT_EQ(writer.size(), 24u);
  writer.Write(std::vector<uint32_t>{1, 2, 3});
  EXPECT_EQ(writer.size(), 44u);

  PaintOpReader reader(buffer, writer.size(),
                       options_provider.deserialize_options(),
                       /*enable_security_constraints*/ true);

  std::vector<float> float_vec;
  reader.Read(float_vec);
  EXPECT_EQ(float_vec, std::vector<float>{});
  reader.Read(float_vec);
  EXPECT_EQ(float_vec, std::vector<float>({1, 2}));
  std::vector<uint32_t> uint_vec;
  reader.Read(uint_vec);
  EXPECT_EQ(uint_vec, std::vector<uint32_t>({1, 2, 3}));
}

TEST(PaintOpWriterReaderTest, SkString) {
  char buffer[128];
  TestOptionsProvider options_provider;
  memset(buffer, 0xa5, std::size(buffer));
  PaintOpWriter writer(buffer, std::size(buffer),
                       options_provider.serialize_options(),
                       /*enable_security_constraints=*/true);
  const SkString original("test string");

  writer.Write(original);
  // 8 bytes for the `original.size()` (size_t), 11 bytes for the string, but
  // aligned to 12 bytes.
  EXPECT_EQ(writer.size(), 20u);

  PaintOpReader reader(buffer, writer.size(),
                       options_provider.deserialize_options(),
                       /*enable_security_constraints=*/true);
  SkString deseralized;
  reader.Read(&deseralized);
  EXPECT_EQ(deseralized, original);
}

TEST(PaintOpWriterReaderTest, EmptySkString) {
  char buffer[128];
  TestOptionsProvider options_provider;
  memset(buffer, 0xa5, std::size(buffer));
  PaintOpWriter writer(buffer, std::size(buffer),
                       options_provider.serialize_options(),
                       /*enable_security_constraints=*/true);
  const SkString original;

  writer.Write(original);
  // 8 bytes for size_t 0.
  EXPECT_EQ(writer.size(), 8u);

  PaintOpReader reader(buffer, writer.size(),
                       options_provider.deserialize_options(),
                       /*enable_security_constraints=*/true);
  SkString deseralized;
  reader.Read(&deseralized);
  EXPECT_EQ(deseralized, original);
}

}  // namespace cc