text: /*
   * Copyright (C) 2018 The Android Open Source Project
   *
   * 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 <stdint.h>
  
  #include <gtest/gtest.h>
  
  #include <android-base/silent_death_test.h>
  #include <unwindstack/Regs.h>
  
  #include "RegsFake.h"
  #include "RegsInfo.h"
  
  namespace unwindstack {
  
  TEST(RegsInfoTest, single_uint32_t) {
    RegsImplFake<uint32_t> regs(10);
    RegsInfo<uint32_t> info(&regs);
  
    regs[1] = 0x100;
    ASSERT_FALSE(info.IsSaved(1));
    ASSERT_EQ(0x100U, info.Get(1));
    ASSERT_EQ(10, info.Total());
  
    uint32_t* value = info.Save(1);
    ASSERT_EQ(value, &regs[1]);
    regs[1] = 0x200;
    ASSERT_TRUE(info.IsSaved(1));
    ASSERT_EQ(0x100U, info.Get(1));
    ASSERT_EQ(0x200U, regs[1]);
  }
  
  TEST(RegsInfoTest, single_uint64_t) {
    RegsImplFake<uint64_t> regs(20);
    RegsInfo<uint64_t> info(&regs);
  
    regs[3] = 0x300;
    ASSERT_FALSE(info.IsSaved(3));
    ASSERT_EQ(0x300U, info.Get(3));
    ASSERT_EQ(20, info.Total());
  
    uint64_t* value = info.Save(3);
    ASSERT_EQ(value, &regs[3]);
    regs[3] = 0x400;
    ASSERT_TRUE(info.IsSaved(3));
    ASSERT_EQ(0x300U, info.Get(3));
    ASSERT_EQ(0x400U, regs[3]);
  }
  
  TEST(RegsInfoTest, all) {
    RegsImplFake<uint64_t> regs(64);
    RegsInfo<uint64_t> info(&regs);
  
    for (uint32_t i = 0; i < 64; i++) {
      regs[i] = i * 0x100;
      ASSERT_EQ(i * 0x100, info.Get(i)) << "Reg " + std::to_string(i) + " failed.";
    }
  
    for (uint32_t i = 0; i < 64; i++) {
      ASSERT_FALSE(info.IsSaved(i)) << "Reg " + std::to_string(i) + " failed.";
      uint64_t* reg = info.Save(i);
      ASSERT_EQ(reg, &regs[i]) << "Reg " + std::to_string(i) + " failed.";
      *reg = i * 0x1000 + 0x100;
      ASSERT_EQ(i * 0x1000 + 0x100, regs[i]) << "Reg " + std::to_string(i) + " failed.";
    }
  
    for (uint32_t i = 0; i < 64; i++) {
      ASSERT_TRUE(info.IsSaved(i)) << "Reg " + std::to_string(i) + " failed.";
      ASSERT_EQ(i * 0x100, info.Get(i)) << "Reg " + std::to_string(i) + " failed.";
    }
  }
  
  using RegsInfoDeathTest = SilentDeathTest;
  
  TEST_F(RegsInfoDeathTest, invalid_register) {
    RegsImplFake<uint64_t> regs(64);
    RegsInfo<uint64_t> info(&regs);
  
    ASSERT_DEATH(info.Save(RegsInfo<uint64_t>::MAX_REGISTERS), "");
  }
  
  }  // namespace unwindstack
  