new_contents: import os
  import pytest
  import sys
  
  from ansible.playbook.play_context import PlayContext
  from ansible.template import Templar
  from ansible import errors
  
  sys.path.insert(1, os.path.join(os.path.dirname(__file__), os.pardir, "action_plugins"))
  from sanity_checks import ActionModule  # noqa: E402
  
  
  @pytest.mark.parametrize('hostvars, host, varname, result', [
      ({"example.com": {"param": 3.11}}, "example.com", "param", 3.11),
      ({"example.com": {"param": 3.11}}, "example.com", "another_param", None)
  ])
  def test_template_var(hostvars, host, varname, result):
      task = FakeTask('sanity_checks', {'checks': []})
      plugin = ActionModule(task, None, PlayContext(), None, Templar(None, None, None), None)
      check = plugin.template_var(hostvars, host, varname)
      assert check == result
  
  
  @pytest.mark.parametrize('hostvars, host, result', [
      ({"example.com": {"openshift_pkg_version": "-3.6.0"}}, "example.com", None),
      ({"example.com": {"openshift_pkg_version": "-3.7.0-0.126.0.git.0.9351aae.el7"}}, "example.com", None),
      ({"example.com": {"openshift_pkg_version": "-3.9.0-2.fc28"}}, "example.com", None),
      ({"example.com": {"openshift_pkg_version": "-3.11*"}}, "example.com", None),
  ])
  def test_valid_check_pkg_version_format(hostvars, host, result):
      task = FakeTask('sanity_checks', {'checks': []})
      plugin = ActionModule(task, None, PlayContext(), None, Templar(None, None, None), None)
      check = plugin.check_pkg_version_format(hostvars, host)
      assert check == result
  
  
  @pytest.mark.parametrize('hostvars, host, result', [
      ({"example.com": {"openshift_pkg_version": "3.11.0"}}, "example.com", None),
      ({"example.com": {"openshift_pkg_version": "-3.11"}}, "example.com", None),
      ({"example.com": {"openshift_pkg_version": "v3.11.0"}}, "example.com", None),
  ])
  def test_invalid_check_pkg_version_format(hostvars, host, result):
      with pytest.raises(errors.AnsibleModuleError):
          task = FakeTask('sanity_checks', {'checks': []})
          plugin = ActionModule(task, None, PlayContext(), None, Templar(None, None, None), None)
          plugin.check_pkg_version_format(hostvars, host)
  
  
  @pytest.mark.parametrize('hostvars, host, result', [
      ({"example.com": {"openshift_release": "v3"}}, "example.com", None),
      ({"example.com": {"openshift_release": "v3.11"}}, "example.com", None),
      ({"example.com": {"openshift_release": "v3.11.0"}}, "example.com", None),
      ({"example.com": {"openshift_release": "3.11"}}, "example.com", None),
  ])
  def test_valid_check_release_format(hostvars, host, result):
      task = FakeTask('sanity_checks', {'checks': []})
      plugin = ActionModule(task, None, PlayContext(), None, Templar(None, None, None), None)
      check = plugin.check_release_format(hostvars, host)
      assert check == result
  
  
  @pytest.mark.parametrize('hostvars, host, result', [
      ({"example.com": {"openshift_release": "-3.11.0"}}, "example.com", None),
      ({"example.com": {"openshift_release": "-3.7.0-0.126.0.git.0.9351aae.el7"}}, "example.com", None),
      ({"example.com": {"openshift_release": "3.1.2.3"}}, "example.com", None),
  ])
  def test_invalid_check_release_format(hostvars, host, result):
      with pytest.raises(errors.AnsibleModuleError):
          task = FakeTask('sanity_checks', {'checks': []})
          plugin = ActionModule(task, None, PlayContext(), None, Templar(None, None, None), None)
          plugin.check_release_format(hostvars, host)
  
  
  def fake_execute_module(*args):
      raise AssertionError('this function should not be called')
  
  
  class FakeTask(object):
      def __init__(self, action, args):
          self.action = action
          self.args = args
          self.async = 0
  
subject: Add unit tests for check_pkg_version_format and check_release_format