text: # Copyright (C) 2012-2020 Ben Kurtovic <ben.kurtovic@gmail.com>
  #
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  # furnished to do so, subject to the following conditions:
  #
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  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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  """
  Test cases for the Token class and its subclasses.
  """
  
  import pytest
  
  from mwparserfromhell.parser import tokens
  
  @pytest.mark.parametrize("name", tokens.__all__)
  def test_issubclass(name):
      """check that all classes within the tokens module are really Tokens"""
      klass = getattr(tokens, name)
      assert issubclass(klass, tokens.Token) is True
      assert isinstance(klass(), klass)
      assert isinstance(klass(), tokens.Token)
  
  def test_attributes():
      """check that Token attributes can be managed properly"""
      token1 = tokens.Token()
      token2 = tokens.Token(foo="bar", baz=123)
  
      assert "bar" == token2.foo
      assert 123 == token2.baz
      assert token1.foo is None
      assert token2.bar is None
  
      token1.spam = "eggs"
      token2.foo = "ham"
      del token2.baz
  
      assert "eggs" == token1.spam
      assert "ham" == token2.foo
      assert token2.baz is None
      with pytest.raises(KeyError):
          token2.__delattr__("baz")
  
  def test_repr():
      """check that repr() on a Token works as expected"""
      token1 = tokens.Token()
      token2 = tokens.Token(foo="bar", baz=123)
      token3 = tokens.Text(text="earwig" * 100)
      hundredchars = ("earwig" * 100)[:97] + "..."
  
      assert "Token()" == repr(token1)
      assert repr(token2) in ("Token(foo='bar', baz=123)", "Token(baz=123, foo='bar')")
      assert "Text(text='" + hundredchars + "')" == repr(token3)
  
  def test_equality():
      """check that equivalent tokens are considered equal"""
      token1 = tokens.Token()
      token2 = tokens.Token()
      token3 = tokens.Token(foo="bar", baz=123)
      token4 = tokens.Text(text="asdf")
      token5 = tokens.Text(text="asdf")
      token6 = tokens.TemplateOpen(text="asdf")
  
      assert token1 == token2
      assert token2 == token1
      assert token4 == token5
      assert token5 == token4
      assert token1 != token3
      assert token2 != token3
      assert token4 != token6
      assert token5 != token6
  
  @pytest.mark.parametrize("token", [
      tokens.Token(),
      tokens.Token(foo="bar", baz=123),
      tokens.Text(text="earwig")
  ])
  def test_repr_equality(token):
      """check that eval(repr(token)) == token"""
      assert token == eval(repr(token), vars(tokens))
  