def add(self, elem, replace=False):
        """Add a requirement.

        :param elem: a string or :class:`Requirement` instance.
        :param replace: if `True`, packages in the set with the same name will
            be removed first.
        """
        if isinstance(elem, text_type):
            elem = Requirement.coerce(elem)
        if replace and elem in self:
            self.remove(elem)
        super(Requirements, self).add(elem)
def test_parse_section_body():
    output_section = {
        'action_template': '    task',
        'sources_repls': 'source',
        'variable': '6',
        'target_pattern': 'target',
    }
    assert mariofile.parse_section_body(SECTION.splitlines(True)) == output_section
    with pytest.raises(mariofile.ConfigurationFileError):
        mariofile.parse_section_body(SECTION_MULTIPLE_RULE.splitlines(True))
    with pytest.raises(mariofile.ConfigurationFileError):
        mariofile.parse_section_body(INVALID_CONFIG.splitlines(True))