chore: establish project baseline
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import importlib.util
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import sys
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from pathlib import Path
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import pytest
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SCRIPT = Path(__file__).parents[1] / "scripts" / "firebird_write_executor.py"
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AUTHORIZED = r"D:\PROJETOS\GTISISTEMAS\Projeto\TESTESOFICIAIS.FDB"
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def load_module():
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spec = importlib.util.spec_from_file_location("firebird_write_executor", SCRIPT)
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module = importlib.util.module_from_spec(spec)
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sys.modules[spec.name] = module
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spec.loader.exec_module(module)
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return module
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executor = load_module()
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class FakeCursor:
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def __init__(self, connection):
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self.connection = connection
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self.rowcount = 0
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self._last = None
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def execute(self, sql, params=()):
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self._last = (sql, params)
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upper = sql.strip().upper()
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if upper.startswith("SELECT F.RDB$FIELD_TYPE"):
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table, field = params
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info = self.connection.schema.get(table.upper(), {}).get(field.upper())
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self._result = [info] if info else []
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elif upper.startswith("SELECT") and "WHERE CODIGO = ?" in upper and "," in upper.split("SELECT", 1)[1].split("FROM")[0]:
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code = params[0]
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row = self.connection.rows.get(code)
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self._result = [(code, row["IPI"])] if row else []
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elif upper.startswith("SELECT IPI FROM"):
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code = params[0]
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row = self.connection.rows.get(code)
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self._result = [(row["IPI"],)] if row else []
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elif upper.startswith("UPDATE"):
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matched = False
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if " = NULL WHERE" in upper:
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code, expected = params
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row = self.connection.rows.get(code)
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matched = row is not None and row["IPI"] == expected
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if matched:
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self.connection.pending[code] = None
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elif sql.count("?") == 2:
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new_value, code = params
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row = self.connection.rows.get(code)
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matched = row is not None and row["IPI"] is None
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if matched:
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self.connection.pending[code] = new_value
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else:
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new_value, code, expected = params
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row = self.connection.rows.get(code)
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matched = row is not None and row["IPI"] == expected
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if matched:
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self.connection.pending[code] = new_value
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self.rowcount = 1 if matched else 0
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self._result = []
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else:
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raise AssertionError(f"unexpected SQL in fake cursor: {sql}")
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def fetchone(self):
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return self._result[0] if self._result else None
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def close(self):
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pass
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class FakeConnection:
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def __init__(self, rows, schema):
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self.rows = rows
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self.schema = schema
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self.pending = {}
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self.committed = False
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self.rolled_back = False
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def cursor(self):
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return FakeCursor(self)
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def commit(self):
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self.committed = True
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for code, value in self.pending.items():
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self.rows[code]["IPI"] = value
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self.pending = {}
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def rollback(self):
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self.rolled_back = True
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self.pending = {}
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def _connection(ipi=None, field_length=8):
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return FakeConnection(
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rows={"000004": {"CODIGO": "000004", "IPI": ipi}},
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schema={"C000025": {"IPI": (37, field_length)}},
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)
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def _proposal(**overrides):
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base = {
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"product_code": "000004",
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"field": "IPI",
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"current_value": None,
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"proposed_value": "NT",
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"status": "CHANGE_REQUIRED",
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"source_dataset": "TIPI_IPI",
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"source_version": "abc123",
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"write_eligible": True,
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}
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base.update(overrides)
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return base
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def test_rejects_wrong_database_path():
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with pytest.raises(executor.WriteRefused):
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executor.assert_authorized_write_path(r"D:\somewhere\else.FDB")
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def test_accepts_exact_authorized_path():
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assert executor.assert_authorized_write_path(AUTHORIZED) == executor.AUTHORIZED_WRITE_DATABASE_PATH
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def test_rejects_non_allowlisted_field():
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with pytest.raises(executor.WriteRefused):
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executor.assert_allowed_field("C000025", "CEST")
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def test_rejects_non_allowlisted_table():
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with pytest.raises(executor.WriteRefused):
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executor.assert_allowed_field("OTHER_TABLE", "IPI")
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def test_rejects_non_write_eligible_proposal():
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connection = _connection()
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with pytest.raises(executor.WriteRefused):
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executor.execute_guarded_update(
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connection,
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database_path=AUTHORIZED,
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proposal=_proposal(write_eligible=False),
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now="2026-09-18T00:00:00Z",
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)
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assert connection.committed is False
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def test_successful_write_and_verification():
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connection = _connection(ipi=None)
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record = executor.execute_guarded_update(
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connection,
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database_path=AUTHORIZED,
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proposal=_proposal(),
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now="2026-09-18T00:00:00Z",
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)
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assert record.before_value is None
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assert record.after_value == "NT"
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assert record.rowcount == 1
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assert connection.committed is True
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assert connection.rows["000004"]["IPI"] == "NT"
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def test_drift_blocks_write():
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connection = _connection(ipi="already-set")
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with pytest.raises(executor.WriteRefused):
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executor.execute_guarded_update(
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connection,
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database_path=AUTHORIZED,
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proposal=_proposal(current_value=None),
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now="2026-09-18T00:00:00Z",
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)
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assert connection.committed is False
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assert connection.rows["000004"]["IPI"] == "already-set"
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def test_wrong_database_path_never_touches_connection():
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connection = _connection()
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with pytest.raises(executor.WriteRefused):
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executor.execute_guarded_update(
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connection,
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database_path=r"D:\PRODUCAO\ERP.FDB",
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proposal=_proposal(),
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now="2026-09-18T00:00:00Z",
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)
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assert connection.committed is False
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assert connection.rows["000004"]["IPI"] is None
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def test_restore_round_trip():
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connection = _connection(ipi="NT")
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record = executor.execute_guarded_restore(
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connection,
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database_path=AUTHORIZED,
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table="C000025",
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field="IPI",
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key_field="CODIGO",
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product_code="000004",
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written_value="NT",
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restore_value=None,
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now="2026-09-18T00:00:00Z",
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)
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assert record.after_value is None
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assert connection.rows["000004"]["IPI"] is None
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def test_rejects_write_that_would_truncate_varchar_field():
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# Mirrors the live C000025.IPI column: VARCHAR(1), while TIPI proposes "NT".
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connection = _connection(ipi=None, field_length=1)
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with pytest.raises(executor.WriteRefused):
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executor.execute_guarded_update(
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connection,
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database_path=AUTHORIZED,
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proposal=_proposal(proposed_value="NT"),
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now="2026-09-18T00:00:00Z",
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)
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assert connection.committed is False
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assert connection.rows["000004"]["IPI"] is None
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def test_explicit_authorized_path_overrides_dev_default():
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client_path = r"D:\ClienteX\ERP\PRODUCAO.FDB"
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assert executor.assert_authorized_write_path(client_path, authorized_path=client_path) == Path(client_path)
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def test_dev_path_is_refused_when_pilot_authorized_path_configured():
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client_path = r"D:\ClienteX\ERP\PRODUCAO.FDB"
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with pytest.raises(executor.WriteRefused):
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executor.assert_authorized_write_path(AUTHORIZED, authorized_path=client_path)
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def test_unconfigured_pilot_never_falls_back_to_authorizing_a_real_client_db():
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# No explicit authorized_path passed (as if an installer forgot to set
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# AUTHORIZED_WRITE_DATABASE_PATH) => falls back to the dev-only constant,
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# so any real client path is still refused, not silently allowed.
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with pytest.raises(executor.WriteRefused):
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executor.assert_authorized_write_path(r"D:\ClienteX\ERP\PRODUCAO.FDB")
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def test_schema_fingerprint_guard_requires_a_match():
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with pytest.raises(executor.WriteRefused):
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executor.assert_schema_fingerprint_authorized("abc", "def")
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with pytest.raises(executor.WriteRefused):
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executor.assert_schema_fingerprint_authorized("abc", None)
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executor.assert_schema_fingerprint_authorized("abc", "abc") # does not raise
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def test_null_proposed_value_refused():
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connection = _connection()
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with pytest.raises(executor.WriteRefused):
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executor.execute_guarded_update(
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connection,
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database_path=AUTHORIZED,
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proposal=_proposal(proposed_value=None),
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now="2026-09-18T00:00:00Z",
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)
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