/*
 * Copyright (C) 2015 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 "oat_file.h"

#include <string>

#include <gtest/gtest.h>

#include "common_runtime_test.h"
#include "dexopt_test.h"
#include "scoped_thread_state_change-inl.h"
#include "vdex_file.h"

namespace art {

class OatFileTest : public DexoptTest {
};

TEST_F(OatFileTest, ResolveRelativeEncodedDexLocation) {
  EXPECT_EQ(std::string("/data/app/foo/base.apk"),
      OatFile::ResolveRelativeEncodedDexLocation(
        nullptr, "/data/app/foo/base.apk"));

  EXPECT_EQ(std::string("/system/framework/base.apk"),
      OatFile::ResolveRelativeEncodedDexLocation(
        "/data/app/foo/base.apk", "/system/framework/base.apk"));

  EXPECT_EQ(std::string("/data/app/foo/base.apk"),
      OatFile::ResolveRelativeEncodedDexLocation(
        "/data/app/foo/base.apk", "base.apk"));

  EXPECT_EQ(std::string("/data/app/foo/base.apk"),
      OatFile::ResolveRelativeEncodedDexLocation(
        "/data/app/foo/base.apk", "foo/base.apk"));

  EXPECT_EQ(std::string("/data/app/foo/base.apk!classes2.dex"),
      OatFile::ResolveRelativeEncodedDexLocation(
        "/data/app/foo/base.apk", "base.apk!classes2.dex"));

  EXPECT_EQ(std::string("/data/app/foo/base.apk!classes11.dex"),
      OatFile::ResolveRelativeEncodedDexLocation(
        "/data/app/foo/base.apk", "base.apk!classes11.dex"));

  EXPECT_EQ(std::string("base.apk"),
      OatFile::ResolveRelativeEncodedDexLocation(
        "/data/app/foo/sludge.apk", "base.apk"));

  EXPECT_EQ(std::string("o/base.apk"),
      OatFile::ResolveRelativeEncodedDexLocation(
        "/data/app/foo/base.apk", "o/base.apk"));
}

TEST_F(OatFileTest, LoadOat) {
  std::string dex_location = GetScratchDir() + "/LoadOat.jar";

  Copy(GetDexSrc1(), dex_location);
  GenerateOatForTest(dex_location.c_str(), CompilerFilter::kSpeed);

  std::string oat_location;
  std::string error_msg;
  ASSERT_TRUE(OatFileAssistant::DexLocationToOatFilename(
        dex_location, kRuntimeISA, &oat_location, &error_msg)) << error_msg;
  std::unique_ptr<OatFile> odex_file(OatFile::Open(/* zip_fd */ -1,
                                                   oat_location.c_str(),
                                                   oat_location.c_str(),
                                                   nullptr,
                                                   nullptr,
                                                   false,
                                                   /*low_4gb*/false,
                                                   dex_location.c_str(),
                                                   &error_msg));
  ASSERT_TRUE(odex_file.get() != nullptr);

  // Check that the vdex file was loaded in the reserved space of odex file.
  EXPECT_EQ(odex_file->GetVdexFile()->Begin(), odex_file->VdexBegin());
}

TEST_F(OatFileTest, ChangingMultiDexUncompressed) {
  std::string dex_location = GetScratchDir() + "/MultiDexUncompressed.jar";

  Copy(GetTestDexFileName("MultiDexUncompressed"), dex_location);
  GenerateOatForTest(dex_location.c_str(), CompilerFilter::kQuicken);

  std::string oat_location;
  std::string error_msg;
  ASSERT_TRUE(OatFileAssistant::DexLocationToOatFilename(
        dex_location, kRuntimeISA, &oat_location, &error_msg)) << error_msg;

  // Ensure we can load that file. Just a precondition.
  {
    std::unique_ptr<OatFile> odex_file(OatFile::Open(/* zip_fd */ -1,
                                                     oat_location.c_str(),
                                                     oat_location.c_str(),
                                                     nullptr,
                                                     nullptr,
                                                     false,
                                                     /*low_4gb*/false,
                                                     dex_location.c_str(),
                                                     &error_msg));
    ASSERT_TRUE(odex_file != nullptr);
    ASSERT_EQ(2u, odex_file->GetOatDexFiles().size());
  }

  // Now replace the source.
  Copy(GetTestDexFileName("MainUncompressed"), dex_location);

  // And try to load again.
  std::unique_ptr<OatFile> odex_file(OatFile::Open(/* zip_fd */ -1,
                                                   oat_location.c_str(),
                                                   oat_location.c_str(),
                                                   nullptr,
                                                   nullptr,
                                                   false,
                                                   /*low_4gb*/false,
                                                   dex_location.c_str(),
                                                   &error_msg));
  EXPECT_TRUE(odex_file == nullptr);
  EXPECT_NE(std::string::npos, error_msg.find("expected 2 uncompressed dex files, but found 1"))
      << error_msg;
}

}  // namespace art