def __init__(self, name):
        """Tree node associated with a particular test in a manifest

        :param name: name of the test"""
        assert name is not None
        ManifestItem.__init__(self, name)
        self.updated_expected = []
        self.new_expected = []
        self.subtests = {}
        self.default_status = None
        self._from_file = True

    def __init__(self, name, test_path):
        """Object representing all the tests in a particular manifest

        :param name: Name of the AST Node associated with this object.
                     Should always be None since this should always be associated with
                     the root node of the AST.
        :param test_path: Path of the test file associated with this manifest.
        """
        if name is not None:
            raise ValueError("ExpectedManifest should represent the root node")
        if test_path is None:
            raise ValueError("ExpectedManifest requires a test path")
        ManifestItem.__init__(self, name)
        self.child_map = {}
        self.test_path = test_path

    def append(self, node):
        """Add a subtest to the current test

        :param node: AST Node associated with the subtest"""
        child = ManifestItem.append(self, node)
        self.subtests[child.name] = child

 def _remove_child(self, child):
     del self.child_map[child.id]
     ManifestItem.remove_child(self, child)
     assert len(self.child_map) == len(self.children)

 def append(self, child):
     """Add a test to the manifest"""
     ManifestItem.append(self, child)
     self.child_map[child.id] = child
     assert len(self.child_map) == len(self.children)