"""Самопроверка чистых функций svod2_paging_check (без стенда)."""
import sys
from pathlib import Path

sys.path.insert(0, str(Path(__file__).resolve().parents[1] / "analysis"))

import svod2_paging_check as chk  # noqa: E402


def _row(i, **data):
    return {"row_type": "row", "depth": 0, "sort_order": i, "data": {"line_id": i, **data}}


def test_stitch_pages_seven_rows_limit_three():
    rows = [_row(i) for i in range(7)]
    calls = []

    def fetch(offset, limit):
        calls.append((offset, limit))
        return {"result": rows[offset : offset + limit], "total": 7}

    stitched, totals = chk.stitch_pages(fetch, 3)
    assert stitched == rows
    assert totals == {7}


def test_compare_stitched_catches_gap_and_duplicate():
    full = [_row(i) for i in range(5)]
    assert chk.compare_stitched(full, list(full)) == []
    assert chk.compare_stitched(full, full[:2] + full[3:])  # пропуск
    assert chk.compare_stitched(full, full[:3] + [full[2]] + full[3:])  # повтор


def test_check_compact_catches_extra_key_and_lost_zero():
    full = [_row(1, header={"name": "x"}, plan={"plan_q1": 0, "plan_q2": 5})]
    proj = chk.compact_projection(full[0]["data"])
    assert proj["plan"]["plan_q1"] == 0
    ok = [{"row_type": "row", "depth": 0, "sort_order": 1, "data": proj}]
    assert chk.check_compact(full, ok) == []
    extra = [{**ok[0], "data": {**proj, "zzz_extra": 1}}]
    assert chk.check_compact(full, extra)
    lost = [{**ok[0], "data": {**proj, "plan": {"plan_q2": 5}}}]
    assert chk.check_compact(full, lost)
    assert chk.check_compact(full, [])  # потерянная строка