// Copyright 2014 The Crashpad Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "minidump/test/minidump_memory_writer_test_util.h"

#include "gtest/gtest.h"

namespace crashpad {
namespace test {

TestMinidumpMemoryWriter::TestMinidumpMemoryWriter(uint64_t base_address,
                                                   size_t size,
                                                   uint8_t value)
    : SnapshotMinidumpMemoryWriter(&test_snapshot_) {
  test_snapshot_.SetAddress(base_address);
  test_snapshot_.SetSize(size);
  test_snapshot_.SetValue(value);
}

TestMinidumpMemoryWriter::~TestMinidumpMemoryWriter() {
}

void TestMinidumpMemoryWriter::SetShouldFailRead(bool should_fail) {
  test_snapshot_.SetShouldFailRead(should_fail);
}

void ExpectMinidumpMemoryDescriptor(
    const MINIDUMP_MEMORY_DESCRIPTOR* expected,
    const MINIDUMP_MEMORY_DESCRIPTOR* observed) {
  MINIDUMP_MEMORY_DESCRIPTOR expected_descriptor;
  MINIDUMP_MEMORY_DESCRIPTOR observed_descriptor;

  memcpy(&expected_descriptor, expected, sizeof(expected_descriptor));
  memcpy(&observed_descriptor, observed, sizeof(observed_descriptor));

  EXPECT_EQ(observed_descriptor.StartOfMemoryRange,
            expected_descriptor.StartOfMemoryRange);
  EXPECT_EQ(observed_descriptor.Memory.DataSize,
            expected_descriptor.Memory.DataSize);
  if (expected_descriptor.Memory.Rva != 0) {
    constexpr uint32_t kMemoryAlignment = 16;
    EXPECT_EQ(observed_descriptor.Memory.Rva,
              (expected_descriptor.Memory.Rva + kMemoryAlignment - 1) &
                  ~(kMemoryAlignment - 1));
  }
}

void ExpectMinidumpMemoryDescriptorAndContents(
    const MINIDUMP_MEMORY_DESCRIPTOR* expected,
    const MINIDUMP_MEMORY_DESCRIPTOR* observed,
    const std::string& file_contents,
    uint8_t value,
    bool at_eof) {
  ExpectMinidumpMemoryDescriptor(expected, observed);

  if (at_eof) {
    EXPECT_EQ(observed->Memory.Rva + observed->Memory.DataSize,
              file_contents.size());
  } else {
    EXPECT_GE(file_contents.size(),
              observed->Memory.Rva + observed->Memory.DataSize);
  }

  std::string expected_data(expected->Memory.DataSize, value);
  std::string observed_data(&file_contents[observed->Memory.Rva],
                            observed->Memory.DataSize);
  EXPECT_EQ(observed_data, expected_data);
}

}  // namespace test
}  // namespace crashpad