new_contents: import importlib
  
  import pytest
  
  import salt.config
  import salt.exceptions
  from tests.support.mock import MagicMock, patch
  
  # "pass" is a reserved keyword, we need to import it differently
  pass_ = importlib.import_module("salt.renderers.pass")
  
  
  @pytest.fixture
  def configure_loader_modules():
      return {
          pass_: {
              "__opts__": salt.config.DEFAULT_MASTER_OPTS.copy(),
              "_get_pass_exec": MagicMock(return_value="/usr/bin/pass"),
          }
      }
  
  
  # The default behavior is that if fetching a secret from pass fails,
  # the value is passed through. Even the trailing newlines are preserved.
  def test_passthrough():
      pass_path = "secret\n"
      expected = pass_path
      result = pass_.render(pass_path)
  
      assert result == expected
  
  
  # Fetch a secret in the strict mode.
  def test_strict_fetch():
      config = {
          "pass_variable_prefix": "pass:",
          "pass_strict_fetch": True,
      }
  
      popen_mock = MagicMock(spec=pass_.Popen)
      popen_mock.return_value.communicate.return_value = ("password123456\n", "")
      popen_mock.return_value.returncode = 0
  
      mocks = {
          "Popen": popen_mock,
      }
  
      pass_path = "pass:secret"
      expected = "password123456"
      with patch.dict(pass_.__opts__, config), patch.dict(pass_.__dict__, mocks):
          result = pass_.render(pass_path)
  
      assert result == expected
  
  
  # Fail to fetch a secret in the strict mode.
  def test_strict_fetch_fail():
      config = {
          "pass_variable_prefix": "pass:",
          "pass_strict_fetch": True,
      }
  
      popen_mock = MagicMock(spec=pass_.Popen)
      popen_mock.return_value.communicate.return_value = ("", "Secret not found")
      popen_mock.return_value.returncode = 1
  
      mocks = {
          "Popen": popen_mock,
      }
  
      pass_path = "pass:secret"
      with patch.dict(pass_.__opts__, config), patch.dict(pass_.__dict__, mocks):
          with pytest.raises(salt.exceptions.SaltRenderError):
              pass_.render(pass_path)
  
  
  # Passthrough a value that doesn't have a pass prefix.
  def test_strict_fetch_passthrough():
      config = {
          "pass_variable_prefix": "pass:",
          "pass_strict_fetch": True,
      }
  
      pass_path = "variable-without-pass-prefix\n"
      expected = pass_path
      with patch.dict(pass_.__opts__, config):
          result = pass_.render(pass_path)
  
      assert result == expected
  
  
  # Fetch a secret in the strict mode. The pass path contains spaces.
  def test_strict_fetch_pass_path_with_spaces():
      config = {
          "pass_variable_prefix": "pass:",
          "pass_strict_fetch": True,
      }
  
      popen_mock = MagicMock(spec=pass_.Popen)
      popen_mock.return_value.communicate.return_value = ("password123456\n", "")
      popen_mock.return_value.returncode = 0
  
      mocks = {
          "Popen": popen_mock,
      }
  
      pass_path = "pass:se cr et"
      with patch.dict(pass_.__opts__, config), patch.dict(pass_.__dict__, mocks):
          pass_.render(pass_path)
  
      call_args, call_kwargs = popen_mock.call_args_list[0]
      assert call_args[0] == ["/usr/bin/pass", "show", "se cr et"]
  
  
  # Fetch a secret in the strict mode. The secret contains leading and trailing whitespaces.
  def test_strict_fetch_secret_with_whitespaces():
      config = {
          "pass_variable_prefix": "pass:",
          "pass_strict_fetch": True,
      }
  
      popen_mock = MagicMock(spec=pass_.Popen)
      popen_mock.return_value.communicate.return_value = (" \tpassword123456\t \r\n", "")
      popen_mock.return_value.returncode = 0
  
      mocks = {
          "Popen": popen_mock,
      }
  
      pass_path = "pass:secret"
      expected = " \tpassword123456\t "  # only the trailing newlines get striped
      with patch.dict(pass_.__opts__, config), patch.dict(pass_.__dict__, mocks):
          result = pass_.render(pass_path)
  
      assert result == expected
  
  
  # Test setting env variables based on config values:
  # - pass_gnupghome -> GNUPGHOME
  # - pass_dir -> PASSWORD_STORE_DIR
  def test_env():
      config = {
          "pass_variable_prefix": "pass:",
          "pass_strict_fetch": True,
          "pass_gnupghome": "/path/to/gnupghome",
          "pass_dir": "/path/to/secretstore",
      }
  
      popen_mock = MagicMock(spec=pass_.Popen)
      popen_mock.return_value.communicate.return_value = ("password123456\n", "")
      popen_mock.return_value.returncode = 0
  
      mocks = {
          "Popen": popen_mock,
      }
  
      pass_path = "pass:secret"
      expected = " \tpassword123456\t "  # only the trailing newlines get striped
      with patch.dict(pass_.__opts__, config), patch.dict(pass_.__dict__, mocks):
          result = pass_.render(pass_path)
  
      call_args, call_kwargs = popen_mock.call_args_list[0]
      assert call_kwargs["env"]["GNUPGHOME"] == config["pass_gnupghome"]
      assert call_kwargs["env"]["PASSWORD_STORE_DIR"] == config["pass_dir"]
  
subject: Add tests for the pass renderer