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 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
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 * this software without specific prior written permission.
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 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


// This file contains the tests of the file path utils.
#include <stdio.h>

#include "base/file_path.h"
#include "base/file_util.h"
#include "tests/common/win/testing_common.h"
#include "utils/cross/file_path_utils.h"

namespace o3d {

namespace {  // anonymous namespace

bool FilePathsEqual(const FilePath& path_1, const FilePath path_2) {
  const FilePath::StringType& p1(path_1.value());
  const FilePath::StringType& p2(path_2.value());
  if (p1.size() == p2.size()) {
    for (size_t ii = 0; ii < p1.size(); ++ii) {
      if (p1[ii] != p2[ii]) {
        if (!FilePath::IsSeparator(p1[ii]) || !FilePath::IsSeparator(p2[ii])) {
          return false;
        }
      }
    }
    return true;
  }
  return false;
}

}  // anonymous namespace

class FilePathUtilsTest : public testing::Test {
};

TEST_F(FilePathUtilsTest, ConvertFilePathToUTF8) {
  std::string test_path("/this/is/a/path");
  FilePath source_path(FILE_PATH_LITERAL("/this/is/a/path"));
  EXPECT_EQ(test_path, FilePathToUTF8(source_path));
}

TEST_F(FilePathUtilsTest, ConvertFilePathToWide) {
  std::wstring test_path(L"/this/is/a/path");
  FilePath source_path(FILE_PATH_LITERAL("/this/is/a/path"));
  EXPECT_EQ(test_path, FilePathToWide(source_path));
}

TEST_F(FilePathUtilsTest, ConvertWideToFilePath) {
  std::wstring test_path(L"/this/is/a/path");
  FilePath dest_path = WideToFilePath(test_path);
  EXPECT_STREQ(FILE_PATH_LITERAL("/this/is/a/path"), dest_path.value().c_str());
}

TEST_F(FilePathUtilsTest, ConvertUTF8ToFilePath) {
  std::string test_path("/this/is/a/path");
  FilePath dest_path = UTF8ToFilePath(test_path);
  EXPECT_STREQ(FILE_PATH_LITERAL("/this/is/a/path"), dest_path.value().c_str());
}

TEST_F(FilePathUtilsTest, AbsolutePathBasic) {
  FilePath cwd;
  file_util::GetCurrentDirectory(&cwd);
#if defined(OS_WIN)
  FilePath test_path(FILE_PATH_LITERAL("this\\is\\a\\path"));
#else
  FilePath test_path(FILE_PATH_LITERAL("this/is/a/path"));
#endif
  FilePath abs_path = test_path;
  AbsolutePath(&abs_path);
  FilePath expected_result = cwd;
  expected_result = expected_result.Append(test_path);
  EXPECT_STREQ(expected_result.value().c_str(), abs_path.value().c_str());
}

TEST_F(FilePathUtilsTest, AbsolutePathAlreadyAbsolute) {
#if defined(OS_WIN)
  FilePath test_path(FILE_PATH_LITERAL("c:\\this\\is\\a\\path"));
#else
  FilePath test_path(FILE_PATH_LITERAL("/this/is/a/path"));
#endif
  FilePath abs_path = test_path;
  AbsolutePath(&abs_path);
  EXPECT_STREQ(test_path.value().c_str(), abs_path.value().c_str());
}

#if defined(OS_WIN)
TEST_F(FilePathUtilsTest, AbsolutePathAlreadyAbsoluteWindowsUnc) {
  FilePath test_path(FILE_PATH_LITERAL("\\\\this\\is\\a\\path"));
  FilePath abs_path = test_path;
  bool result = AbsolutePath(&abs_path);
  EXPECT_STREQ(test_path.value().c_str(), abs_path.value().c_str());
}
#endif

TEST_F(FilePathUtilsTest, RelativePathsBasic) {
#if defined(OS_WIN)
  FilePath expected_result(FILE_PATH_LITERAL("under\\parent"));
#else
  FilePath expected_result(FILE_PATH_LITERAL("under/parent"));
#endif
  FilePath base_path(FILE_PATH_LITERAL("/this/is/a/path"));
  FilePath child_path(FILE_PATH_LITERAL("/this/is/a/path/under/parent"));
  FilePath result;
  bool is_relative = GetRelativePathIfPossible(base_path, child_path, &result);
  EXPECT_STREQ(expected_result.value().c_str(), result.value().c_str());
  EXPECT_TRUE(is_relative);
}

#if defined(OS_WIN)
TEST_F(FilePathUtilsTest, RelativePathsWindowsAbsolute) {
  FilePath expected_result(FILE_PATH_LITERAL("under\\parent"));
  FilePath base_path(FILE_PATH_LITERAL("c:\\this\\is\\a\\path"));
  FilePath child_path(
      FILE_PATH_LITERAL("c:\\this\\is\\a\\path\\under\\parent"));
  FilePath result;
  bool is_relative = GetRelativePathIfPossible(base_path, child_path, &result);
  EXPECT_STREQ(expected_result.value().c_str(), result.value().c_str());
  EXPECT_TRUE(is_relative);
}

TEST_F(FilePathUtilsTest, RelativePathsWindowsDifferentDrives) {
  FilePath base_path(FILE_PATH_LITERAL("c:\\this\\is\\a\\path"));
  FilePath child_path(
      FILE_PATH_LITERAL("d:\\this\\is\\a\\path\\not\\under\\parent"));
  FilePath result;
  bool is_relative = GetRelativePathIfPossible(base_path, child_path, &result);
  EXPECT_STREQ(child_path.value().c_str(), result.value().c_str());
  EXPECT_FALSE(is_relative);
}
#endif

TEST_F(FilePathUtilsTest, RelativePathsCaseDifferent) {
  FilePath base_path(FILE_PATH_LITERAL("/This/Is/A/Path"));
  FilePath child_path(FILE_PATH_LITERAL("/this/is/a/path/under/parent"));
  FilePath result;
  bool is_relative = GetRelativePathIfPossible(base_path, child_path, &result);
#if defined(OS_WIN)
  EXPECT_STREQ(FILE_PATH_LITERAL("under\\parent"), result.value().c_str());
  EXPECT_TRUE(is_relative);
#else
  EXPECT_STREQ(child_path.value().c_str(), result.value().c_str());
  EXPECT_FALSE(is_relative);
#endif
}

TEST_F(FilePathUtilsTest, RelativePathsTrailingSlash) {
#if defined(OS_WIN)
  FilePath expected_result(FILE_PATH_LITERAL("under\\parent"));
#else
  FilePath expected_result(FILE_PATH_LITERAL("under/parent"));
#endif
  FilePath base_path(FILE_PATH_LITERAL("/this/is/a/path/"));
  FilePath child_path(FILE_PATH_LITERAL("/this/is/a/path/under/parent"));
  FilePath result;
  bool is_relative = GetRelativePathIfPossible(base_path, child_path, &result);
  EXPECT_STREQ(expected_result.value().c_str(), result.value().c_str());
  EXPECT_TRUE(is_relative);
}

TEST_F(FilePathUtilsTest, RelativePathsRelativeInputs) {
#if defined(OS_WIN)
  FilePath expected_result(FILE_PATH_LITERAL("under\\parent"));
#else
  FilePath expected_result(FILE_PATH_LITERAL("under/parent"));
#endif
  FilePath base_path(FILE_PATH_LITERAL("this/is/a/path"));
  FilePath child_path(FILE_PATH_LITERAL("this/is/a/path/under/parent"));
  FilePath result;
  bool is_relative = GetRelativePathIfPossible(base_path, child_path, &result);
  EXPECT_STREQ(expected_result.value().c_str(), result.value().c_str());
  EXPECT_TRUE(is_relative);
}

TEST_F(FilePathUtilsTest, FindFile) {
  String folder_name_1(*g_program_path + "/unittest_data");
  String folder_name_2(*g_program_path + "/bitmap_test");
  FilePath folder_path_1 = UTF8ToFilePath(folder_name_1);
  FilePath folder_path_2 = UTF8ToFilePath(folder_name_2);
  String file_name_1("fur.fx");
  String file_name_2("someplace/somewhere/tga-256x256-32bit.tga");
  FilePath file_path_1 = UTF8ToFilePath(file_name_1);
  FilePath file_path_2 = UTF8ToFilePath(file_name_2);
  FilePath out_path;

  FilePath expected_path_1(folder_path_1);
  expected_path_1 = expected_path_1.Append(file_path_1);
  o3d::AbsolutePath(&expected_path_1);
  FilePath expected_path_2(folder_path_2);
  expected_path_2 =
      expected_path_2.Append(UTF8ToFilePath("tga-256x256-32bit.tga"));
  o3d::AbsolutePath(&expected_path_2);

  std::vector<FilePath> paths;
  EXPECT_FALSE(FindFile(paths, file_path_1, &out_path));
  EXPECT_FALSE(FindFile(paths, file_path_2, &out_path));
  paths.push_back(folder_path_1);
  EXPECT_TRUE(FindFile(paths, file_path_1, &out_path));
  EXPECT_FALSE(FindFile(paths, file_path_2, &out_path));
  EXPECT_TRUE(FilePathsEqual(out_path, expected_path_1));
  paths.push_back(folder_path_2);
  EXPECT_TRUE(FindFile(paths, file_path_1, &out_path));
  EXPECT_TRUE(FilePathsEqual(out_path, expected_path_1));
  EXPECT_TRUE(FindFile(paths, file_path_2, &out_path));
  EXPECT_TRUE(FilePathsEqual(out_path, expected_path_2));
}

}  // namespace o3d