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"""Tests for extract_metadata()."""
import sys
import os
sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..'))
from conftest import make_plain_message, add_received_headers
from email.message import EmailMessage
import importlib.util
spec = importlib.util.spec_from_file_location(
"eml_script",
os.path.join(os.path.dirname(__file__), '..', 'eml-view-and-extract-attachments.py')
)
eml_script = importlib.util.module_from_spec(spec)
spec.loader.exec_module(eml_script)
extract_metadata = eml_script.extract_metadata
class TestAllHeadersPresent:
def test_complete_dict(self):
msg = make_plain_message(
from_="Jonathan Smith <jsmith@example.com>",
to="Craig <craig@example.com>",
subject="Test Subject",
date="Thu, 05 Feb 2026 11:36:00 -0600"
)
result = extract_metadata(msg)
assert result['from'] == "Jonathan Smith <jsmith@example.com>"
assert result['to'] == "Craig <craig@example.com>"
assert result['subject'] == "Test Subject"
assert result['date'] == "Thu, 05 Feb 2026 11:36:00 -0600"
assert 'timing' in result
class TestMissingFrom:
def test_from_is_none(self):
msg = EmailMessage()
msg['To'] = 'craig@example.com'
msg['Subject'] = 'Test'
msg['Date'] = 'Thu, 05 Feb 2026 11:36:00 -0600'
msg.set_content("body")
result = extract_metadata(msg)
assert result['from'] is None
class TestMissingDate:
def test_date_is_none(self):
msg = EmailMessage()
msg['From'] = 'test@example.com'
msg['To'] = 'craig@example.com'
msg['Subject'] = 'Test'
msg.set_content("body")
result = extract_metadata(msg)
assert result['date'] is None
class TestLongSubject:
def test_full_subject_returned(self):
long_subject = "Re: Fw: This is a very long subject line that spans many words and might be folded"
msg = make_plain_message(subject=long_subject)
result = extract_metadata(msg)
assert result['subject'] == long_subject
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