Steve Canny 3bab9d93e6
rfctr(part): prepare for pluggable auto-partitioners 1 (#3655)
**Summary**
In preparation for pluggable auto-partitioners simplify metadata as
discussed.

**Additional Context**
- Pluggable auto-partitioners requires partitioners to have a consistent
call signature. An arbitrary partitioner provided at runtime needs to
have a call signature that is known and consistent. Basically
`partition_x(filename, *, file, **kwargs)`.
- The current `auto.partition()` is highly coupled to each distinct
file-type partitioner, deciding which arguments to forward to each.
- This is driven by the existence of "delegating" partitioners, those
that convert their file-type and then call a second partitioner to do
the actual partitioning. Both the delegating and proxy partitioners are
decorated with metadata-post-processing decorators and those decorators
are not idempotent. We call the situation where those decorators would
run twice "double-decorating". For example, EPUB converts to HTML and
calls `partition_html()` and both `partition_epub()` and
`partition_html()` are decorated.
- The way double-decorating has been avoided in the past is to avoid
sending the arguments the metadata decorators are sensitive to to the
proxy partitioner. This is very obscure, complex to reason about,
error-prone, and just overall not a viable strategy. The better solution
is to not decorate delegating partitioners and let the proxy partitioner
handle all the metadata.
- This first step in preparation for that is part of simplifying the
metadata processing by removing unused or unwanted legacy parameters.
- `date_from_file_object` is a misnomer because a file-object never
contains last-modified data.
- It can never produce useful results in the API where last-modified
information must be provided by `metadata_last_modified`.
- It is an undocumented parameter so not in use.
- Using it can produce incorrect metadata.
2024-09-23 22:23:10 +00:00

120 lines
4.2 KiB
Python

from __future__ import annotations
from pytest_mock import MockFixture
from test_unstructured.unit_utils import assert_round_trips_through_JSON, example_doc_path
from unstructured.chunking.title import chunk_by_title
from unstructured.documents.elements import Title
from unstructured.partition.rst import partition_rst
def test_partition_rst_from_filename():
elements = partition_rst(example_doc_path("README.rst"))
assert elements[0] == Title("Example Docs")
assert elements[0].metadata.filetype == "text/x-rst"
for element in elements:
assert element.metadata.filename == "README.rst"
def test_partition_rst_from_filename_returns_uns_elements():
elements = partition_rst(example_doc_path("README.rst"))
assert isinstance(elements[0], Title)
def test_partition_rst_from_filename_with_metadata_filename():
elements = partition_rst(example_doc_path("README.rst"), metadata_filename="test")
assert all(element.metadata.filename == "test" for element in elements)
def test_partition_rst_from_file():
with open(example_doc_path("README.rst"), "rb") as f:
elements = partition_rst(file=f)
assert elements[0] == Title("Example Docs")
assert elements[0].metadata.filetype == "text/x-rst"
for element in elements:
assert element.metadata.filename is None
def test_partition_rst_from_file_with_metadata_filename():
with open(example_doc_path("README.rst"), "rb") as f:
elements = partition_rst(file=f, metadata_filename="test")
assert elements[0] == Title("Example Docs")
for element in elements:
assert element.metadata.filename == "test"
def test_partition_rst_from_filename_exclude_metadata():
elements = partition_rst(example_doc_path("README.rst"), include_metadata=False)
for i in range(len(elements)):
assert elements[i].metadata.to_dict() == {}
def test_partition_rst_from_file_exclude_metadata():
with open(example_doc_path("README.rst"), "rb") as f:
elements = partition_rst(file=f, include_metadata=False)
for i in range(len(elements)):
assert elements[i].metadata.to_dict() == {}
# -- .metadata.last_modified ---------------------------------------------------------------------
def test_partition_rst_from_file_path_gets_last_modified_from_filesystem(mocker: MockFixture):
filesystem_last_modified = "2024-06-14T16:01:29"
mocker.patch(
"unstructured.partition.rst.get_last_modified_date", return_value=filesystem_last_modified
)
elements = partition_rst(example_doc_path("README.rst"))
assert all(e.metadata.last_modified == filesystem_last_modified for e in elements)
def test_partition_rst_from_file_path_prefers_metadata_last_modified(mocker: MockFixture):
filesystem_last_modified = "2024-06-14T16:01:29"
metadata_last_modified = "2020-07-05T09:24:28"
mocker.patch(
"unstructured.partition.rst.get_last_modified_date", return_value=filesystem_last_modified
)
elements = partition_rst(
example_doc_path("README.rst"), metadata_last_modified=metadata_last_modified
)
assert all(e.metadata.last_modified == metadata_last_modified for e in elements)
# ------------------------------------------------------------------------------------------------
def test_partition_rst_with_json():
elements = partition_rst(example_doc_path("README.rst"))
assert_round_trips_through_JSON(elements)
def test_add_chunking_strategy_on_partition_rst():
file_path = example_doc_path("README.rst")
elements = partition_rst(file_path)
chunk_elements = partition_rst(file_path, chunking_strategy="by_title")
chunks = chunk_by_title(elements)
assert chunk_elements != elements
assert chunk_elements == chunks
def test_partition_rst_element_metadata_has_languages():
elements = partition_rst(example_doc_path("README.rst"))
assert elements[0].metadata.languages == ["eng"]
def test_partition_rst_respects_detect_language_per_element():
elements = partition_rst(
example_doc_path("language-docs/eng_spa_mult.rst"), detect_language_per_element=True
)
langs = [element.metadata.languages for element in elements]
assert langs == [["eng"], ["spa", "eng"], ["eng"], ["eng"], ["spa"]]