old_contents: """
  Tests for POSIX-compatible `true`.
  
  https://pubs.opengroup.org/onlinepubs/9699919799/utilities/true.html
  """
  
  from helpers import check_version, run
  
  
  def test_version():
      """Check that we're using Boreutil's implementation."""
      assert check_version("true")
  
  
  def test_missing_args():
      """Nothing to test: `false` accepts any number of arguments."""
      pass
  
  
  def test_extra_args():
      """Nothing to test: `false` accepts any number of arguments."""
      pass
  
  
  def test_help():
      """Passing -h or --help should print help text."""
      assert run(["true", "-h"]).stdout.split(' ')[0] == 'Usage:'
      assert run(["true", "--help"]).stdout.split(' ')[0] == 'Usage:'
      assert run(["true", "-h"]).returncode > 0
      assert run(["true", "--help"]).returncode > 0
  
  
  def test_main():
      """Running `true` with out -h/--help/--version should print nothing and
         exit with return code of 0."""
      assert len(run(["true"]).stdout) == 0
      assert len(run(["true"]).stderr) == 0
      assert run(["true"]).returncode == 0
  
new_contents: """
  Tests for POSIX-compatible `true`.
  
  https://pubs.opengroup.org/onlinepubs/9699919799/utilities/true.html
  """
  
  from helpers import check_version, run
  
  
  def test_version():
      """Check that we're using Boreutil's implementation."""
      assert check_version("true")
  
  
  def test_missing_args():
      """Nothing to test: `true` accepts any number of arguments."""
      pass
  
  
  def test_extra_args():
      """Nothing to test: `true` accepts any number of arguments."""
      pass
  
  
  def test_help():
      """Passing -h or --help should print help text."""
      assert run(["true", "-h"]).stdout.split(' ')[0] == 'Usage:'
      assert run(["true", "--help"]).stdout.split(' ')[0] == 'Usage:'
      assert run(["true", "-h"]).returncode > 0
      assert run(["true", "--help"]).returncode > 0
  
  
  def test_main():
      """Running `true` with out -h/--help/--version should print nothing and
         exit with return code of 0."""
      assert len(run(["true"]).stdout) == 0
      assert len(run(["true"]).stderr) == 0
      assert run(["true"]).returncode == 0
  
subject: Fix docstring.