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SEP = "/"
def _splitnode(nodeid):
"""Split a nodeid into constituent 'parts'.
Node IDs are strings, and can be things like:
''
'testing/code'
'testing/code/test_excinfo.py'
'testing/code/test_excinfo.py::TestFormattedExcinfo::()'
Return values are lists e.g.
[]
['testing', 'code']
['testing', 'code', 'test_excinfo.py']
['testing', 'code', 'test_excinfo.py', 'TestFormattedExcinfo', '()']
"""
if nodeid == '':
# If there is no root node at all, return an empty list so the caller's logic can remain sane
return []
parts = nodeid.split(SEP)
# Replace single last element 'test_foo.py::Bar::()' with multiple elements 'test_foo.py', 'Bar', '()'
parts[-1:] = parts[-1].split("::")
return parts
def ischildnode(baseid, nodeid):
"""Return True if the nodeid is a child node of the baseid.
E.g. 'foo/bar::Baz::()' is a child of 'foo', 'foo/bar' and 'foo/bar::Baz', but not of 'foo/blorp'
"""
base_parts = _splitnode(baseid)
node_parts = _splitnode(nodeid)
if len(node_parts) < len(base_parts):
return False
return node_parts[:len(base_parts)] == base_parts
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