Files
DECNET/tests/service_testing/test_pop3.py
anti f78104e1c8 fix: resolve all ruff lint errors and SQLite UNIQUE constraint issue
Ruff fixes (20 errors → 0):
- F401: Remove unused imports (DeckyConfig, random_hostname, IniConfig,
  COMPOSE_FILE, sys, patch) across cli.py, mutator/engine.py,
  templates/ftp, templates/rdp, test_mysql.py, test_postgres.py
- F541: Remove extraneous f-prefixes on strings with no placeholders
  in templates/imap, test_ftp_live, test_http_live
- E741: Rename ambiguous variable 'l' to descriptive names (line, entry,
  part) across conftest.py, test_ftp_live, test_http_live,
  test_mongodb_live, test_pop3, test_ssh

SQLite fix:
- Change _initialize_sync() admin seeding from SELECT-then-INSERT to
  INSERT OR IGNORE, preventing IntegrityError when admin user already
  exists from a previous run
2026-04-12 02:17:50 -04:00

287 lines
8.4 KiB
Python

"""
Tests for templates/pop3/server.py
Exercises the full POP3 state machine:
AUTHORIZATION → TRANSACTION
Uses asyncio Protocol directly — no network socket needed.
"""
import importlib.util
import sys
from types import ModuleType
from unittest.mock import MagicMock, patch
import pytest
# ── Helpers ───────────────────────────────────────────────────────────────────
def _make_fake_decnet_logging() -> ModuleType:
mod = ModuleType("decnet_logging")
mod.syslog_line = MagicMock(return_value="")
mod.write_syslog_file = MagicMock()
mod.forward_syslog = MagicMock()
mod.SEVERITY_WARNING = 4
mod.SEVERITY_INFO = 6
return mod
def _load_pop3():
env = {
"NODE_NAME": "testhost",
"IMAP_USERS": "admin:admin123,root:toor",
"IMAP_BANNER": "+OK [testhost] Dovecot ready.",
}
for key in list(sys.modules):
if key in ("pop3_server", "decnet_logging"):
del sys.modules[key]
sys.modules["decnet_logging"] = _make_fake_decnet_logging()
spec = importlib.util.spec_from_file_location(
"pop3_server", "templates/pop3/server.py"
)
mod = importlib.util.module_from_spec(spec)
with patch.dict("os.environ", env, clear=False):
spec.loader.exec_module(mod)
return mod
def _make_protocol(mod):
"""Return (protocol, transport, written). Banner already cleared."""
proto = mod.POP3Protocol()
transport = MagicMock()
written: list[bytes] = []
transport.write.side_effect = written.append
proto.connection_made(transport)
written.clear()
return proto, transport, written
def _send(proto, data: str) -> None:
proto.data_received(data.encode() + b"\r\n")
def _replies(written: list[bytes]) -> bytes:
return b"".join(written)
def _login(proto, written):
_send(proto, "USER admin")
_send(proto, "PASS admin123")
written.clear()
@pytest.fixture
def pop3_mod():
return _load_pop3()
# ── Tests: banner & unauthenticated ──────────────────────────────────────────
def test_pop3_banner_starts_with_ok(pop3_mod):
proto = pop3_mod.POP3Protocol()
transport = MagicMock()
written: list[bytes] = []
transport.write.side_effect = written.append
proto.connection_made(transport)
banner = b"".join(written)
assert banner.startswith(b"+OK")
def test_pop3_capa_contains_top_uidl_user(pop3_mod):
proto, _, written = _make_protocol(pop3_mod)
_send(proto, "CAPA")
resp = _replies(written)
assert b"TOP" in resp
assert b"UIDL" in resp
assert b"USER" in resp
def test_pop3_login_success(pop3_mod):
proto, _, written = _make_protocol(pop3_mod)
_send(proto, "USER admin")
assert b"+OK" in _replies(written)
written.clear()
_send(proto, "PASS admin123")
assert b"+OK Logged in" in _replies(written)
assert proto._state == "TRANSACTION"
def test_pop3_login_fail(pop3_mod):
proto, _, written = _make_protocol(pop3_mod)
_send(proto, "USER admin")
written.clear()
_send(proto, "PASS wrongpass")
assert b"-ERR" in _replies(written)
assert proto._state == "AUTHORIZATION"
def test_pop3_bad_pass_connection_stays_open(pop3_mod):
proto, transport, written = _make_protocol(pop3_mod)
_send(proto, "USER admin")
_send(proto, "PASS wrongpass")
transport.close.assert_not_called()
def test_pop3_retry_after_bad_pass_succeeds(pop3_mod):
proto, _, written = _make_protocol(pop3_mod)
_send(proto, "USER admin")
_send(proto, "PASS wrongpass")
written.clear()
_send(proto, "USER admin")
_send(proto, "PASS admin123")
assert b"+OK Logged in" in _replies(written)
def test_pop3_pass_before_user(pop3_mod):
proto, _, written = _make_protocol(pop3_mod)
_send(proto, "PASS admin123")
assert b"-ERR" in _replies(written)
def test_pop3_stat_before_auth(pop3_mod):
proto, _, written = _make_protocol(pop3_mod)
_send(proto, "STAT")
assert b"-ERR" in _replies(written)
def test_pop3_retr_before_auth(pop3_mod):
proto, _, written = _make_protocol(pop3_mod)
_send(proto, "RETR 1")
assert b"-ERR" in _replies(written)
def test_pop3_invalid_command(pop3_mod):
proto, _, written = _make_protocol(pop3_mod)
_send(proto, "INVALID")
assert b"-ERR" in _replies(written)
# ── Tests: TRANSACTION state ──────────────────────────────────────────────────
def test_pop3_stat_10_messages(pop3_mod):
proto, _, written = _make_protocol(pop3_mod)
_login(proto, written)
_send(proto, "STAT")
resp = _replies(written).decode()
assert resp.startswith("+OK 10 ")
def test_pop3_list_returns_10_entries(pop3_mod):
proto, _, written = _make_protocol(pop3_mod)
_login(proto, written)
_send(proto, "LIST")
resp = _replies(written).decode()
assert resp.startswith("+OK 10")
# Count individual message lines: "N size\r\n"
entries = [entry for entry in resp.split("\r\n") if entry and entry[0].isdigit()]
assert len(entries) == 10
def test_pop3_retr_after_auth_msg1(pop3_mod):
proto, _, written = _make_protocol(pop3_mod)
_send(proto, "USER admin")
_send(proto, "PASS admin123")
written.clear()
_send(proto, "RETR 1")
combined = _replies(written)
assert b"+OK" in combined
assert b"AKIAIOSFODNN7EXAMPLE" in combined
def test_pop3_retr_msg5_root_password(pop3_mod):
proto, _, written = _make_protocol(pop3_mod)
_login(proto, written)
_send(proto, "RETR 5")
resp = _replies(written)
assert b"+OK" in resp
assert b"r00tM3T00!" in resp
def test_pop3_top_returns_headers_plus_lines(pop3_mod):
proto, _, written = _make_protocol(pop3_mod)
_login(proto, written)
_send(proto, "TOP 1 3")
resp = _replies(written).decode(errors="replace")
assert resp.startswith("+OK")
# Headers must be present
assert "From:" in resp
assert "Subject:" in resp
# Should NOT contain body content beyond 3 lines — but 3 lines of the
# AWS email body are enough to include the access key
assert ".\r\n" in resp
def test_pop3_top_3_body_lines_count(pop3_mod):
proto, _, written = _make_protocol(pop3_mod)
_login(proto, written)
# Message 1 body after blank line:
# "Team,\r\n", "\r\n", "New AWS credentials...\r\n", ...
_send(proto, "TOP 1 3")
resp = _replies(written).decode(errors="replace")
# Strip headers up to blank line
parts = resp.split("\r\n\r\n", 1)
assert len(parts) == 2
body_section = parts[1].rstrip("\r\n.")
body_lines = [part for part in body_section.split("\r\n") if part != "."]
assert len(body_lines) <= 3
def test_pop3_uidl_returns_10_entries(pop3_mod):
proto, _, written = _make_protocol(pop3_mod)
_login(proto, written)
_send(proto, "UIDL")
resp = _replies(written).decode()
assert resp.startswith("+OK")
entries = [entry for entry in resp.split("\r\n") if entry and entry[0].isdigit()]
assert len(entries) == 10
def test_pop3_uidl_format_msg_n(pop3_mod):
proto, _, written = _make_protocol(pop3_mod)
_login(proto, written)
_send(proto, "UIDL")
resp = _replies(written).decode()
assert "1 msg-1" in resp
assert "5 msg-5" in resp
def test_pop3_dele_removes_message(pop3_mod):
proto, _, written = _make_protocol(pop3_mod)
_login(proto, written)
_send(proto, "DELE 3")
resp = _replies(written)
assert b"+OK" in resp
assert 2 in proto._deleted # 0-based
def test_pop3_rset_clears_deletions(pop3_mod):
proto, _, written = _make_protocol(pop3_mod)
_login(proto, written)
_send(proto, "DELE 1")
_send(proto, "DELE 2")
written.clear()
_send(proto, "RSET")
resp = _replies(written)
assert b"+OK" in resp
assert len(proto._deleted) == 0
def test_pop3_dele_then_stat_decrements_count(pop3_mod):
proto, _, written = _make_protocol(pop3_mod)
_login(proto, written)
_send(proto, "DELE 1")
written.clear()
_send(proto, "STAT")
resp = _replies(written).decode()
assert resp.startswith("+OK 9 ")
def test_pop3_quit_closes_connection(pop3_mod):
proto, transport, written = _make_protocol(pop3_mod)
_login(proto, written)
_send(proto, "QUIT")
transport.close.assert_called_once()