old_contents: import itertools
  from pathlib import Path
  from typing import List
  
  
  class WorkDir:
      """a simple model for a"""
  
      commit_command: str
      signed_commit_command: str
      add_command: str
  
      def __repr__(self):
          return f"<WD {self.cwd}>"
  
      def __init__(self, cwd: Path) -> None:
          self.cwd = cwd
          self.__counter = itertools.count()
  
      def __call__(self, cmd: "List[str] | str", **kw):
          if kw:
              assert isinstance(cmd, str), "formatting the command requires text input"
              cmd = cmd.format(**kw)
          from setuptools_scm.utils import do
  
          return do(cmd, self.cwd)
  
      def write(self, name: str, value: "str | bytes", **kw: object) -> Path:
          filename = self.cwd / name
          if kw:
              assert isinstance(value, str)
              value = value.format(**kw)
          if isinstance(value, bytes):
              filename.write_bytes(value)
          else:
              filename.write_text(value)
          return filename
  
      def _reason(self, given_reason: "str | None") -> str:
          if given_reason is None:
              return f"number-{next(self.__counter)}"
          else:
              return given_reason
  
      def add_and_commit(self, reason: "str | None" = None, **kwargs):
          self(self.add_command)
          self.commit(reason, **kwargs)
  
      def commit(self, reason: "str | None" = None, signed: bool = False) -> None:
          reason = self._reason(reason)
          self(
              self.commit_command if not signed else self.signed_commit_command,
              reason=reason,
          )
  
      def commit_testfile(self, reason: "str | None" = None, signed: bool = False):
          reason = self._reason(reason)
          self.write("test.txt", "test {reason}", reason=reason)
          self(self.add_command)
          self.commit(reason=reason, signed=signed)
  
      def get_version(self, **kw):
          __tracebackhide__ = True
          from setuptools_scm import get_version
  
          version = get_version(root=str(self.cwd), fallback_root=str(self.cwd), **kw)
          print(version)
          return version
  
      @property
      def version(self):
          __tracebackhide__ = True
          return self.get_version()
  
new_contents: import itertools
  from pathlib import Path
  from typing import List
  
  
  class WorkDir:
      """a simple model for a"""
  
      commit_command: str
      signed_commit_command: str
      add_command: str
  
      def __repr__(self):
          return f"<WD {self.cwd}>"
  
      def __init__(self, cwd: Path) -> None:
          self.cwd = cwd
          self.__counter = itertools.count()
  
      def __call__(self, cmd: "List[str] | str", **kw):
          if kw:
              assert isinstance(cmd, str), "formatting the command requires text input"
              cmd = cmd.format(**kw)
          from setuptools_scm.utils import do
  
          return do(cmd, self.cwd)
  
      def write(self, name: str, content: "str | bytes", /, **kw: object) -> Path:
          path = self.cwd / name
          if kw:
              assert isinstance(content, str)
              content = content.format(**kw)
          if isinstance(content, bytes):
              path.write_bytes(content)
          else:
              path.write_text(content)
          return path
  
      def _reason(self, given_reason: "str | None") -> str:
          if given_reason is None:
              return f"number-{next(self.__counter)}"
          else:
              return given_reason
  
      def add_and_commit(self, reason: "str | None" = None, **kwargs):
          self(self.add_command)
          self.commit(reason, **kwargs)
  
      def commit(self, reason: "str | None" = None, signed: bool = False) -> None:
          reason = self._reason(reason)
          self(
              self.commit_command if not signed else self.signed_commit_command,
              reason=reason,
          )
  
      def commit_testfile(self, reason: "str | None" = None, signed: bool = False):
          reason = self._reason(reason)
          self.write("test.txt", "test {reason}", reason=reason)
          self(self.add_command)
          self.commit(reason=reason, signed=signed)
  
      def get_version(self, **kw):
          __tracebackhide__ = True
          from setuptools_scm import get_version
  
          version = get_version(root=str(self.cwd), fallback_root=str(self.cwd), **kw)
          print(version)
          return version
  
      @property
      def version(self):
          __tracebackhide__ = True
          return self.get_version()
  
subject: refactor test util Workdir.write flor clarity