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test_structure.py
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test_structure.py
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#!/usr/bin/env python3
import os
import re
import unittest
from collections import deque
from pdfminer.pdftypes import resolve1
import pdfplumber
from pdfplumber.structure import PDFStructTree
HERE = os.path.abspath(os.path.dirname(__file__))
TREE = [
{
"type": "Document",
"children": [
{
"type": "P",
"attributes": {
"O": "Layout",
"Placement": "Block",
"SpaceBefore": 0.24,
"TextAlign": "Center",
},
"mcids": [0],
},
{
"type": "H1",
"attributes": {
"O": "Layout",
"Placement": "Block",
"SpaceBefore": 0.36,
},
"mcids": [1],
},
{
"type": "P",
"attributes": {
"O": "Layout",
"Placement": "Block",
"SpaceBefore": 0.12,
},
"mcids": [2],
},
{
"type": "P",
"attributes": {
"O": "Layout",
"Placement": "Block",
"SpaceBefore": 0.181,
},
"mcids": [3, 4, 5, 6, 7],
},
{
"type": "H2",
"attributes": {
"O": "Layout",
"Placement": "Block",
"SpaceBefore": 0.381,
},
"mcids": [8],
},
{
"type": "P",
"attributes": {
"O": "Layout",
"Placement": "Block",
"SpaceBefore": 0.12,
},
"mcids": [9],
},
{
"type": "L",
"children": [
{
"type": "LI",
"children": [
{
"type": "LBody",
"children": [
{
"type": "P",
"attributes": {
"O": "Layout",
"Placement": "Block",
"SpaceBefore": 0.181,
"StartIndent": 0.36,
},
"mcids": [10, 11],
}
],
}
],
},
{
"type": "LI",
"children": [
{
"type": "LBody",
"children": [
{
"type": "P",
"attributes": {
"O": "Layout",
"Placement": "Block",
"SpaceBefore": 0.181,
"StartIndent": 0.36,
},
"mcids": [12, 13],
},
{
"type": "L",
"children": [
{
"type": "LI",
"children": [
{
"type": "LBody",
"children": [
{
"type": "P",
"attributes": {
"O": "Layout",
"Placement": "Block", # noqa: E501
"SpaceBefore": 0.181, # noqa: E501
"StartIndent": 0.72, # noqa: E501
},
"mcids": [14, 15],
}
],
}
],
}
],
},
],
}
],
},
{
"type": "LI",
"children": [
{
"type": "LBody",
"children": [
{
"type": "P",
"attributes": {
"O": "Layout",
"Placement": "Block",
"SpaceBefore": 0.181,
"StartIndent": 0.36,
},
"mcids": [16, 17, 18, 19, 20, 21, 22, 23],
}
],
}
],
},
],
},
{
"type": "H3",
"attributes": {
"O": "Layout",
"Placement": "Block",
"SpaceBefore": 0.321,
},
"mcids": [24],
},
{
"type": "Table",
"attributes": {
"O": "Layout",
"Placement": "Block",
"SpaceBefore": 0.12,
"SpaceAfter": 0.015,
"Width": 9.972,
"Height": 1.047,
"BBox": [56.7, 249.75, 555.3, 302.1],
},
"children": [
{
"type": "TR",
"attributes": {"O": "Layout", "Placement": "Block"},
"children": [
{
"type": "TH",
"attributes": {
"O": "Layout",
"Placement": "Inline",
"Width": 4.985,
"Height": 0.291,
},
"children": [
{
"type": "P",
"attributes": {
"O": "Layout",
"Placement": "Block",
},
"mcids": [25],
}
],
},
{
"type": "TH",
"attributes": {
"O": "Layout",
"Placement": "Inline",
"Width": 4.987,
"Height": 0.291,
},
"children": [
{
"type": "P",
"attributes": {
"O": "Layout",
"Placement": "Block",
},
"mcids": [26],
}
],
},
],
},
{
"type": "TR",
"attributes": {"O": "Layout", "Placement": "Block"},
"children": [
{
"type": "TD",
"attributes": {
"O": "Layout",
"Placement": "Inline",
"Width": 4.985,
"Height": 0.291,
},
"children": [
{
"type": "P",
"attributes": {
"O": "Layout",
"Placement": "Block",
},
"mcids": [27],
}
],
},
{
"type": "TD",
"attributes": {
"O": "Layout",
"Placement": "Inline",
"Width": 4.987,
"Height": 0.291,
},
"children": [
{
"type": "P",
"attributes": {
"O": "Layout",
"Placement": "Block",
},
"mcids": [28],
}
],
},
],
},
{
"type": "TR",
"attributes": {"O": "Layout", "Placement": "Block"},
"children": [
{
"type": "TD",
"attributes": {
"O": "Layout",
"Placement": "Inline",
"Width": 4.985,
"Height": 0.33,
},
"children": [
{
"type": "P",
"attributes": {
"O": "Layout",
"Placement": "Block",
},
"mcids": [29],
}
],
},
{
"type": "TD",
"attributes": {
"O": "Layout",
"Placement": "Inline",
"Width": 4.987,
"Height": 0.33,
},
"children": [
{
"type": "P",
"attributes": {
"O": "Layout",
"Placement": "Block",
},
"mcids": [30],
}
],
},
],
},
],
},
],
}
]
class Test(unittest.TestCase):
"""Test a PDF specifically created to show structure."""
@classmethod
def setup_class(self):
path = os.path.join(HERE, "pdfs/pdf_structure.pdf")
self.pdf = pdfplumber.open(path)
@classmethod
def teardown_class(self):
self.pdf.close()
def test_structure_tree(self):
assert self.pdf.pages[0].structure_tree == TREE
# Add page numbers
d = deque(TREE)
while d:
el = d.popleft()
el["page_number"] = 1
if "children" in el:
d.extend(el["children"])
assert self.pdf.structure_tree == TREE
PVSTRUCT = [
{
"type": "Sect",
"children": [
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [0]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [1]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [2]},
{"type": "P", "lang": "FR-FR", "page_number": 1, "mcids": [3]},
{"type": "P", "lang": "FR-FR", "page_number": 1, "mcids": [4]},
{"type": "P", "lang": "FR-FR", "page_number": 1, "mcids": [5]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [6]},
{"type": "P", "lang": "FR-FR", "page_number": 1, "mcids": [7]},
{
"type": "P",
"lang": "FR-FR",
"page_number": 1,
"mcids": [8],
"children": [
{"type": "Span", "lang": "FR-CA", "page_number": 1, "mcids": [9]}
],
},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [11]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [12]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [13]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [14]},
{"type": "P", "lang": "FR-FR", "page_number": 1, "mcids": [15]},
{"type": "P", "lang": "FR-FR", "page_number": 1, "mcids": [16]},
{
"type": "L",
"children": [
{
"type": "LI",
"children": [
{
"type": "LBody",
"lang": "FR-CA",
"page_number": 1,
"mcids": [19],
}
],
}
],
},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [22]},
{"type": "P", "lang": "FR-FR", "page_number": 1, "mcids": [23]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [24]},
{
"type": "L",
"children": [
{
"type": "LI",
"children": [
{
"type": "LBody",
"lang": "FR-CA",
"page_number": 1,
"mcids": [27],
}
],
}
],
},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [30]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [31]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [32]},
{
"type": "L",
"children": [
{
"type": "LI",
"children": [
{
"type": "LBody",
"lang": "FR-CA",
"page_number": 1,
"mcids": [35],
}
],
}
],
},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [38]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [39]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [40]},
{
"type": "L",
"children": [
{
"type": "LI",
"children": [
{
"type": "LBody",
"lang": "FR-CA",
"page_number": 1,
"mcids": [43, 45],
"children": [
{
"type": "Span",
"lang": "FR-FR",
"page_number": 1,
"mcids": [44],
}
],
}
],
}
],
},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [48]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [49]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [50]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [51]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [52]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [53]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [54]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [55]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [56]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [57]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [58]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [59]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [60]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [61]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [62]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [63]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [64]},
{"type": "P", "lang": "FR-CA", "page_number": 1, "mcids": [65]},
{"type": "P", "lang": "FR-CA", "page_number": 2, "mcids": [0]},
{"type": "P", "lang": "FR-CA", "page_number": 2, "mcids": [1]},
{"type": "P", "lang": "FR-CA", "page_number": 2, "mcids": [2]},
{"type": "P", "lang": "FR-CA", "page_number": 2, "mcids": [3]},
{"type": "P", "lang": "FR-CA", "page_number": 2, "mcids": [4]},
{"type": "P", "lang": "FR-CA", "page_number": 2, "mcids": [5]},
{"type": "P", "lang": "FR-CA", "page_number": 2, "mcids": [6]},
{
"type": "L",
"children": [
{
"type": "LI",
"children": [
{
"type": "LBody",
"lang": "FR-CA",
"page_number": 2,
"mcids": [9, 11],
"children": [
{
"type": "Span",
"lang": "FR-FR",
"page_number": 2,
"mcids": [10],
}
],
}
],
}
],
},
{"type": "P", "lang": "FR-CA", "page_number": 2, "mcids": [14]},
{"type": "P", "lang": "FR-CA", "page_number": 2, "mcids": [15]},
{"type": "P", "lang": "FR-CA", "page_number": 2, "mcids": [16]},
{"type": "P", "lang": "FR-FR", "page_number": 2, "mcids": [17]},
{"type": "P", "lang": "FR-FR", "page_number": 2, "mcids": [18]},
{"type": "P", "lang": "FR-FR", "page_number": 2, "mcids": [19]},
],
}
]
PVSTRUCT1 = [
{
"type": "Sect",
"children": [
{"lang": "FR-CA", "type": "P", "mcids": [0]},
{"lang": "FR-CA", "type": "P", "mcids": [1]},
{"lang": "FR-CA", "type": "P", "mcids": [2]},
{"lang": "FR-CA", "type": "P", "mcids": [3]},
{"lang": "FR-CA", "type": "P", "mcids": [4]},
{"lang": "FR-CA", "type": "P", "mcids": [5]},
{"lang": "FR-CA", "type": "P", "mcids": [6]},
{
"type": "L",
"children": [
{
"type": "LI",
"children": [
{
"lang": "FR-CA",
"type": "LBody",
"mcids": [9, 11],
"children": [
{"lang": "FR-FR", "type": "Span", "mcids": [10]}
],
}
],
}
],
},
{"lang": "FR-CA", "type": "P", "mcids": [14]},
{"lang": "FR-CA", "type": "P", "mcids": [15]},
{"lang": "FR-CA", "type": "P", "mcids": [16]},
{"lang": "FR-FR", "type": "P", "mcids": [17]},
{"lang": "FR-FR", "type": "P", "mcids": [18]},
{"lang": "FR-FR", "type": "P", "mcids": [19]},
],
}
]
PVSTRUCT2 = [
{
"type": "Sect",
"children": [
{"type": "P", "lang": "FR-CA", "page_number": 2, "mcids": [0]},
{"type": "P", "lang": "FR-CA", "page_number": 2, "mcids": [1]},
{"type": "P", "lang": "FR-CA", "page_number": 2, "mcids": [2]},
{"type": "P", "lang": "FR-CA", "page_number": 2, "mcids": [3]},
{"type": "P", "lang": "FR-CA", "page_number": 2, "mcids": [4]},
{"type": "P", "lang": "FR-CA", "page_number": 2, "mcids": [5]},
{"type": "P", "lang": "FR-CA", "page_number": 2, "mcids": [6]},
{
"type": "L",
"children": [
{
"type": "LI",
"children": [
{
"type": "LBody",
"lang": "FR-CA",
"page_number": 2,
"mcids": [9, 11],
"children": [
{
"type": "Span",
"lang": "FR-FR",
"page_number": 2,
"mcids": [10],
}
],
}
],
}
],
},
{"type": "P", "lang": "FR-CA", "page_number": 2, "mcids": [14]},
{"type": "P", "lang": "FR-CA", "page_number": 2, "mcids": [15]},
{"type": "P", "lang": "FR-CA", "page_number": 2, "mcids": [16]},
{"type": "P", "lang": "FR-FR", "page_number": 2, "mcids": [17]},
{"type": "P", "lang": "FR-FR", "page_number": 2, "mcids": [18]},
{"type": "P", "lang": "FR-FR", "page_number": 2, "mcids": [19]},
],
}
]
IMAGESTRUCT = [
{
"type": "Document",
"children": [
{"type": "P", "mcids": [0]},
{"type": "P", "mcids": [1]},
{
"type": "Figure",
"alt_text": "pdfplumber on github\n\n"
"a screen capture of the github page for pdfplumber",
"mcids": [2],
},
],
}
]
WORD365 = [
{
"type": "Document",
"children": [
{
"type": "H1",
"children": [
{"type": "Span", "mcids": [0]},
{"type": "Span", "actual_text": " ", "mcids": [1]},
],
},
{"type": "P", "mcids": [2]},
{
"type": "L",
"attributes": {"O": "List", "ListNumbering": "Disc"},
"children": [
{"type": "LI", "children": [{"type": "LBody", "mcids": [3]}]},
{"type": "LI", "children": [{"type": "LBody", "mcids": [4]}]},
{"type": "LI", "children": [{"type": "LBody", "mcids": [5]}]},
],
},
{"type": "P", "mcids": [6]},
{
"type": "L",
"attributes": {"O": "List", "ListNumbering": "Decimal"},
"children": [
{"type": "LI", "children": [{"type": "LBody", "mcids": [7]}]},
{"type": "LI", "children": [{"type": "LBody", "mcids": [8]}]},
],
},
{
"type": "Table",
"children": [
{
"type": "THead",
"children": [
{
"type": "TR",
"children": [
{
"type": "TH",
"children": [{"type": "P", "mcids": [9, 10]}],
},
{
"type": "TH",
"children": [{"type": "P", "mcids": [11, 12]}],
},
{
"type": "TH",
"children": [{"type": "P", "mcids": [13, 14]}],
},
],
}
],
},
{
"type": "TBody",
"children": [
{
"type": "TR",
"children": [
{
"type": "TD",
"children": [{"type": "P", "mcids": [15, 16]}],
},
{
"type": "TD",
"children": [{"type": "P", "mcids": [17, 18]}],
},
{
"type": "TD",
"children": [{"type": "P", "mcids": [19, 20]}],
},
],
},
{
"type": "TR",
"children": [
{
"type": "TD",
"children": [{"type": "P", "mcids": [21, 22]}],
},
{
"type": "TD",
"children": [{"type": "P", "mcids": [23, 24]}],
},
{
"type": "TD",
"children": [{"type": "P", "mcids": [25, 26]}],
},
],
},
],
},
],
},
{"type": "P", "mcids": [27]},
],
}
]
SCOTUS = [
{
"type": "Div",
"children": [
{
"type": "P",
"page_number": 1,
"attributes": {
"LineHeight": 25.75,
"TextIndent": 21.625,
"O": "Layout",
},
"mcids": [1],
},
{
"type": "P",
"page_number": 1,
"attributes": {
"LineHeight": 25.75,
"StartIndent": 86.375,
"O": "Layout",
},
"mcids": [2],
},
{
"type": "P",
"page_number": 1,
"attributes": {
"LineHeight": 25.75,
"TextIndent": 50.375,
"O": "Layout",
},
"mcids": [3, 4],
},
{
"type": "P",
"page_number": 1,
# This is important, it has attributes and a class
"attributes": {
"LineHeight": 25.75,
"StartIndent": 165.625,
"EndIndent": 57.625,
"SpaceAfter": 24.5,
"O": "Layout",
},
"mcids": [5],
},
{
"type": "P",
"page_number": 1,
"attributes": {
"LineHeight": 25.75,
"TextIndent": 100.75,
"O": "Layout",
},
"mcids": [6],
},
{
"type": "P",
"page_number": 1,
# This is important, it has attributes and a class
"attributes": {
"LineHeight": 25.75,
"TextIndent": 21.625,
"EndIndent": 50.375,
"O": "Layout",
"TextAlign": "None",
"SpaceAfter": 179.125,
},
"mcids": [7],
},
{
"type": "P",
"page_number": 1,
# This is important, it has two attribute classes
"attributes": {"O": "Layout", "TextAlign": "Center", "SpaceAfter": 8.5},
"mcids": [8],
},
{
"type": "P",
"page_number": 1,
"attributes": {"O": "Layout", "TextAlign": "Center"},
"mcids": [9],
},
],
}
]
HELLO = [
{
"type": "Section",
"page_number": 1,
"children": [
{
"type": "P",
"page_number": 1,
"attributes": {"O": "Foo", "A1": 1},
"mcids": [1],
},
{
"type": "P",
"page_number": 2,
"attributes": {"O": "Foo", "A1": 2, "A2": 2},
"mcids": [1],
},
],
},
{
"type": "P",
"revision": 1,
"page_number": 2,
"attributes": {"O": "Foo", "A1": 3, "A2": 3},
"mcids": [2],
},
]
HELLO1 = [
{
"type": "Section",
"page_number": 1,
"children": [
{
"type": "P",
"page_number": 1,
"attributes": {"O": "Foo", "A1": 1},
"mcids": [1],
},
],
}
]
HELLO1P = [
{
"type": "Section",
"children": [{"type": "P", "attributes": {"O": "Foo", "A1": 1}, "mcids": [1]}],
}
]
class TestClass(unittest.TestCase):
"""Test the underlying Structure tree class"""
def test_structure_tree_class(self):
path = os.path.join(HERE, "pdfs/image_structure.pdf")
pdf = pdfplumber.open(path)
stree = PDFStructTree(pdf, pdf.pages[0])
doc_elem = next(iter(stree))
assert [k.type for k in doc_elem] == ["P", "P", "Figure"]
def test_find_all_tree(self):
"""
Test find_all() and find() on trees
"""
path = os.path.join(HERE, "pdfs/image_structure.pdf")
pdf = pdfplumber.open(path)
stree = PDFStructTree(pdf, pdf.pages[0])
figs = list(stree.find_all("Figure"))
assert len(figs) == 1
fig = stree.find("Figure")
assert fig == figs[0]
assert stree.find("Fogure") is None
figs = list(stree.find_all(re.compile(r"Fig.*")))
assert len(figs) == 1
figs = list(stree.find_all(lambda x: x.type == "Figure"))
assert len(figs) == 1
figs = list(stree.find_all("Foogure"))
assert len(figs) == 0
figs = list(stree.find_all(re.compile(r"Fog.*")))
assert len(figs) == 0
figs = list(stree.find_all(lambda x: x.type == "Flogger"))
assert len(figs) == 0
def test_find_all_element(self):
"""
Test find_all() and find() on elements
"""
path = os.path.join(HERE, "pdfs/pdf_structure.pdf")
pdf = pdfplumber.open(path)
stree = PDFStructTree(pdf)
for list_elem in stree.find_all("L"):
items = list(list_elem.find_all("LI"))
assert items
for item in items:
body = list(item.find_all("LBody"))
assert body
body1 = item.find("LBody")
assert body1 == body[0]
assert item.find("Loonie") is None
def test_all_mcids(self):
"""
Test all_mcids()
"""
path = os.path.join(HERE, "pdfs/2023-06-20-PV.pdf")
pdf = pdfplumber.open(path)
# Make sure we can get them with page numbers
stree = PDFStructTree(pdf)
sect = next(stree.find_all("Sect"))
mcids = list(sect.all_mcids())
pages = set(page for page, mcid in mcids)
assert 1 in pages
assert 2 in pages
# If we take only a single page there are no page numbers
# (FIXME: may wish to reconsider this API decision...)
page = pdf.pages[1]
stree = PDFStructTree(pdf, page)
sect = next(stree.find_all("Sect"))
mcids = list(sect.all_mcids())
pages = set(page for page, mcid in mcids)
assert None in pages
assert 1 not in pages
assert 2 not in pages
# Assure that we get the MCIDs for a content element
for p in sect.find_all("P"):
assert set(mcid for page, mcid in p.all_mcids()) == set(p.mcids)
def test_element_bbox(self):
"""
Test various ways of getting element bboxes
"""
path = os.path.join(HERE, "pdfs/pdf_structure.pdf")
pdf = pdfplumber.open(path)
stree = PDFStructTree(pdf)
# As BBox attribute
table = next(stree.find_all("Table"))
assert tuple(stree.element_bbox(table)) == (56.7, 489.9, 555.3, 542.25)
# With child elements
tr = next(table.find_all("TR"))
assert tuple(stree.element_bbox(tr)) == (56.8, 495.9, 328.312, 507.9)
# From a specific page it should also work
stree = PDFStructTree(pdf, pdf.pages[0])
table = next(stree.find_all("Table"))
assert tuple(stree.element_bbox(table)) == (56.7, 489.9, 555.3, 542.25)
tr = next(table.find_all("TR"))
assert tuple(stree.element_bbox(tr)) == (56.8, 495.9, 328.312, 507.9)
# Yeah but what happens if you crop the page?
page = pdf.pages[0].crop((10, 400, 500, 500))
stree = PDFStructTree(pdf, page)
table = next(stree.find_all("Table"))
# The element gets cropped too
assert tuple(stree.element_bbox(table)) == (56.7, 489.9, 500, 500)
# And if you crop it out of the page?
page = pdf.pages[0].crop((0, 0, 560, 400))
stree = PDFStructTree(pdf, page)
table = next(stree.find_all("Table"))
with self.assertRaises(IndexError):
_ = stree.element_bbox(table)
class TestUnparsed(unittest.TestCase):
"""Test handling of PDFs with unparsed pages."""
def test_unparsed_pages(self):
path = os.path.join(HERE, "pdfs/2023-06-20-PV.pdf")
pdf = pdfplumber.open(path, pages=[2])
assert pdf.structure_tree == PVSTRUCT2
class TestMany(unittest.TestCase):
"""Test various PDFs."""
def test_no_stucture(self):
path = os.path.join(HERE, "pdfs/pdffill-demo.pdf")
pdf = pdfplumber.open(path)
assert pdf.structure_tree == []
assert pdf.pages[0].structure_tree == []
def test_word365(self):
path = os.path.join(HERE, "pdfs/word365_structure.pdf")
pdf = pdfplumber.open(path)
page = pdf.pages[0]
assert page.structure_tree == WORD365
def test_proces_verbal(self):
path = os.path.join(HERE, "pdfs/2023-06-20-PV.pdf")
pdf = pdfplumber.open(path)
assert pdf.structure_tree == PVSTRUCT
page = pdf.pages[1]
assert page.structure_tree == PVSTRUCT1
def test_missing_parenttree(self):