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TST: Improve encryption/decryption test #1009

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Jun 19, 2022
Merged

TST: Improve encryption/decryption test #1009

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19 changes: 17 additions & 2 deletions tests/test_writer.py
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Original file line number Diff line number Diff line change
Expand Up @@ -265,20 +265,35 @@ def test_fill_form():
writer.write(output_stream)


def test_encrypt():
@pytest.mark.parametrize(
"use_128bit",
[(True), (False)],
)
def test_encrypt(use_128bit):
reader = PdfReader(os.path.join(RESOURCE_ROOT, "form.pdf"))
writer = PdfWriter()

page = reader.pages[0]
orig_text = page.extract_text()

writer.add_page(page)
writer.encrypt(user_pwd="userpwd", owner_pwd="ownerpwd", use_128bit=False)
writer.encrypt(user_pwd="userpwd", owner_pwd="ownerpwd", use_128bit=use_128bit)

# write "output" to PyPDF2-output.pdf
tmp_filename = "dont_commit_encrypted.pdf"
with open(tmp_filename, "wb") as output_stream:
writer.write(output_stream)

with open(tmp_filename, "rb") as input_stream:
data = input_stream.read()

assert b"foo" not in data

reader = PdfReader(tmp_filename, password="userpwd")
new_text = reader.pages[0].extract_text()

assert new_text == orig_text

# Cleanup
os.remove(tmp_filename)

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