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86 lines
3.1 KiB
Python
86 lines
3.1 KiB
Python
"""Tests for the extractoutput preprocessor"""
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# Copyright (c) IPython Development Team.
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# Distributed under the terms of the Modified BSD License.
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import json
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from ..extractoutput import ExtractOutputPreprocessor
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from .base import PreprocessorTestsBase
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class TestExtractOutput(PreprocessorTestsBase):
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"""Contains test functions for extractoutput.py"""
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def build_preprocessor(self):
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"""Make an instance of a preprocessor"""
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preprocessor = ExtractOutputPreprocessor()
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preprocessor.extract_output_types = {"text/plain", "image/png", "application/pdf"}
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preprocessor.enabled = True
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return preprocessor
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def test_constructor(self):
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"""Can a ExtractOutputPreprocessor be constructed?"""
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self.build_preprocessor()
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def test_output(self):
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"""Test the output of the ExtractOutputPreprocessor"""
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nb = self.build_notebook()
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res = self.build_resources()
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preprocessor = self.build_preprocessor()
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nb, res = preprocessor(nb, res)
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# Check if text was extracted.
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output = nb.cells[0].outputs[1]
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self.assertIn("filenames", output.metadata)
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self.assertIn("text/plain", output.metadata.filenames)
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text_filename = output.metadata.filenames["text/plain"]
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# Check if png was extracted.
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output = nb.cells[0].outputs[6]
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self.assertIn("filenames", output.metadata)
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self.assertIn("image/png", output.metadata.filenames)
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png_filename = output.metadata.filenames["image/png"]
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# Check that pdf was extracted
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output = nb.cells[0].outputs[7]
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self.assertIn("filenames", output.metadata)
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self.assertIn("application/pdf", output.metadata.filenames)
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pdf_filename = output.metadata.filenames["application/pdf"]
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# Verify text output
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self.assertIn(text_filename, res["outputs"])
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self.assertEqual(res["outputs"][text_filename], b"b")
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# Verify png output
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self.assertIn(png_filename, res["outputs"])
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self.assertEqual(res["outputs"][png_filename], b"g")
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# Verify pdf output
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self.assertIn(pdf_filename, res["outputs"])
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self.assertEqual(res["outputs"][pdf_filename], b"h")
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def test_json_extraction(self):
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nb = self.build_notebook(with_json_outputs=True)
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res = self.build_resources()
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preprocessor = self.build_preprocessor()
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preprocessor.extract_output_types = {"application/json"}
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nb, res = preprocessor(nb, res)
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reference = self.build_notebook(with_json_outputs=True).cells[0].outputs
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# Verify cell untouched
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self.assertEqual(
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[out.get("data") for out in nb.cells[0].outputs], [out.get("data") for out in reference]
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)
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outputs = sorted(res["outputs"].values())
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reference_files = []
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for out in reference:
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try:
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data = out["data"]["application/json"]
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reference_files.append(json.dumps(data).encode())
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except KeyError:
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pass
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# Verify equivalence of extracted outputs.
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self.assertEqual(sorted(outputs), sorted(reference_files))
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