Revert "Remove the obsolete package_extract_dir() test"

    expect("", script6.c_str(), kNoCause);

}

TEST_F(UpdaterTest, package_extract_dir) {

  // package_extract_dir expects 2 arguments.

  expect(nullptr, "package_extract_dir()", kArgsParsingFailure);

  expect(nullptr, "package_extract_dir(\"arg1\")", kArgsParsingFailure);

  expect(nullptr, "package_extract_dir(\"arg1\", \"arg2\", \"arg3\")", kArgsParsingFailure);

  std::string zip_path = from_testdata_base("ziptest_valid.zip");

  ZipArchiveHandle handle;

  ASSERT_EQ(0, OpenArchive(zip_path.c_str(), &handle));

  // Need to set up the ziphandle.

  UpdaterInfo updater_info;

  updater_info.package_zip = handle;

  // Extract "b/c.txt" and "b/d.txt" with package_extract_dir("b", "<dir>").

  TemporaryDir td;

  std::string temp_dir(td.path);

  std::string script("package_extract_dir(\"b\", \"" + temp_dir + "\")");

  expect("t", script.c_str(), kNoCause, &updater_info);

  // Verify.

  std::string data;

  std::string file_c = temp_dir + "/c.txt";

  ASSERT_TRUE(android::base::ReadFileToString(file_c, &data));

  ASSERT_EQ(kCTxtContents, data);

  std::string file_d = temp_dir + "/d.txt";

  ASSERT_TRUE(android::base::ReadFileToString(file_d, &data));

  ASSERT_EQ(kDTxtContents, data);

  // Modify the contents in order to retry. It's expected to be overwritten.

  ASSERT_TRUE(android::base::WriteStringToFile("random", file_c));

  ASSERT_TRUE(android::base::WriteStringToFile("random", file_d));

  // Extract again and verify.

  expect("t", script.c_str(), kNoCause, &updater_info);

  ASSERT_TRUE(android::base::ReadFileToString(file_c, &data));

  ASSERT_EQ(kCTxtContents, data);

  ASSERT_TRUE(android::base::ReadFileToString(file_d, &data));

  ASSERT_EQ(kDTxtContents, data);

  // Clean up the temp files under td.

  ASSERT_EQ(0, unlink(file_c.c_str()));

  ASSERT_EQ(0, unlink(file_d.c_str()));

  // Extracting "b/" (with slash) should give the same result.

  script = "package_extract_dir(\"b/\", \"" + temp_dir + "\")";

  expect("t", script.c_str(), kNoCause, &updater_info);

  ASSERT_TRUE(android::base::ReadFileToString(file_c, &data));

  ASSERT_EQ(kCTxtContents, data);

  ASSERT_TRUE(android::base::ReadFileToString(file_d, &data));

  ASSERT_EQ(kDTxtContents, data);

  ASSERT_EQ(0, unlink(file_c.c_str()));

  ASSERT_EQ(0, unlink(file_d.c_str()));

  // Extracting "" is allowed. The entries will carry the path name.

  script = "package_extract_dir(\"\", \"" + temp_dir + "\")";

  expect("t", script.c_str(), kNoCause, &updater_info);

  std::string file_a = temp_dir + "/a.txt";

  ASSERT_TRUE(android::base::ReadFileToString(file_a, &data));

  ASSERT_EQ(kATxtContents, data);

  std::string file_b = temp_dir + "/b.txt";

  ASSERT_TRUE(android::base::ReadFileToString(file_b, &data));

  ASSERT_EQ(kBTxtContents, data);

  std::string file_b_c = temp_dir + "/b/c.txt";

  ASSERT_TRUE(android::base::ReadFileToString(file_b_c, &data));

  ASSERT_EQ(kCTxtContents, data);

  std::string file_b_d = temp_dir + "/b/d.txt";

  ASSERT_TRUE(android::base::ReadFileToString(file_b_d, &data));

  ASSERT_EQ(kDTxtContents, data);

  ASSERT_EQ(0, unlink(file_a.c_str()));

  ASSERT_EQ(0, unlink(file_b.c_str()));

  ASSERT_EQ(0, unlink(file_b_c.c_str()));

  ASSERT_EQ(0, unlink(file_b_d.c_str()));

  ASSERT_EQ(0, rmdir((temp_dir + "/b").c_str()));

  // Extracting non-existent entry should still give "t".

  script = "package_extract_dir(\"doesntexist\", \"" + temp_dir + "\")";

  expect("t", script.c_str(), kNoCause, &updater_info);

  // Only relative zip_path is allowed.

  script = "package_extract_dir(\"/b\", \"" + temp_dir + "\")";

  expect("", script.c_str(), kNoCause, &updater_info);

  // Only absolute dest_path is allowed.

  script = "package_extract_dir(\"b\", \"path\")";

  expect("", script.c_str(), kNoCause, &updater_info);

  CloseArchive(handle);

}

// TODO: Test extracting to block device.

TEST_F(UpdaterTest, package_extract_file) {

  // package_extract_file expects 1 or 2 arguments.