"""Focused tests for L3 safety policy."""

import os

import sys

ROOT = os.path.join(os.path.dirname(__file__), "..")

sys.path.insert(0, ROOT)

from oversight_core import l3_policy, watermark

def ok(msg: str) -> None:

    print(f"  [PASS] {msg}")

def test_risky_documents_default_l3_off():

    text = "The system MUST verify every request. SELECT * FROM users;"

    decision = l3_policy.decide_l3(

        filename="api-spec.md",

        content_type="text/markdown",

        text=text,

        requested_mode="auto",

    )

    assert not decision.enabled

    assert decision.document_class == "technical_spec"

    ok("technical/spec content disables L3 by default")

def test_full_l3_requires_ack_metadata():

    decision = l3_policy.decide_l3(

        filename="brief.txt",

        content_type="text/plain",

        text="This report will begin with a large review and explain the issue.",

        requested_mode="full",

    )

    assert decision.enabled

    assert decision.requires_ack

    assert decision.mode == "full"

    ok("explicit full L3 returns acknowledgement-required decision")

def test_safe_l3_preserves_protected_lines():

    mark_id = watermark.new_mark_id()

    original = (

        "The Vendor MUST provide 5 kg by Friday.\n"

        "This report will begin with a large review and explain the issue for Alice.\n"

        "    SELECT * FROM users;\n"

    )

    marked = l3_policy.apply_l3_safe(original, mark_id, mode="full")

    assert "The Vendor MUST provide 5 kg by Friday." in marked

    assert "Alice" in marked

    assert "    SELECT * FROM users;" in marked

    assert marked != original

    ok("safe L3 preserves RFC2119/numeric/code lines while marking prose")

if __name__ == "__main__":

    print("=" * 60)

    print("oversight_core.l3_policy - focused unit tests")

    print("=" * 60)

    test_risky_documents_default_l3_off()

    test_full_l3_requires_ack_metadata()

    test_safe_l3_preserves_protected_lines()

    print("\n  ALL TESTS PASSED - 3/3")