46999debdb
Use email.header.make_header for MIME header decoding so adjacent encoded/plain header parts preserve RFC spacing, with regression coverage.
35 lines
1.1 KiB
Python
35 lines
1.1 KiB
Python
"""mcp email server _decode_header must not inject spaces between parts.
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email.header.decode_header returns plain-text runs WITH their surrounding
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whitespace (e.g. (b"Re: ", None)), so joining parts with " " produced a
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double space after "Re:" on every non-ASCII subject, a spurious space in
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"Name <addr>" senders, and violated RFC 2047 6.2 which requires whitespace
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between two adjacent encoded-words to be dropped.
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"""
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import pytest
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pytest.importorskip("mcp")
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import mcp_servers.email_server as es
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def test_prefix_then_encoded_word_single_space():
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assert es._decode_header("Re: =?utf-8?b?SsOzc2U=?=") == "Re: J\u00f3se"
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def test_encoded_word_then_plain_text():
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assert es._decode_header("=?utf-8?b?SsOzc2U=?= Smith") == "J\u00f3se Smith"
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def test_adjacent_encoded_words_join_without_space():
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out = es._decode_header("=?iso-8859-1?q?Caf=E9?= =?utf-8?b?5pel5pys?=")
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assert out == "Caf\u00e9\u65e5\u672c"
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def test_plain_ascii_header_unchanged():
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assert es._decode_header("Weekly report") == "Weekly report"
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def test_empty_header():
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assert es._decode_header("") == ""
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