import pytest

from explorer_helpers import inspect_positions_for_issues


def test_inspect_positions_for_issues_basic():
    # Construct synthetic positions_by_window with 3 windows
    positions_by_window = {
        "2021-01": {
            "mp_1": (0.1, 0.2),
            "mp_2 (Amsterdam)": (0.5, 0.6),
        },
        "2021-02": {
            "mp_2 (Amsterdam)": (0.4, 0.7),
            "mp_3": (0.9, 0.1),
        },
        "2021-03": {
            "mp_1": (0.2, 0.3),
            # an MP id that is not in party_map
            "unknown_mp": (0.0, 0.0),
        },
    }

    party_map = {
        "mp_1": "P1",
        "mp_2": "P2",
        "mp_3": "P3",
    }

    res = inspect_positions_for_issues(positions_by_window, party_map)

    assert res["windows_count"] == 3
    assert res["party_map_count"] == len(party_map)
    # parties_with_centroid_counts: P1 present in windows 2021-01 and 2021-03 -> 2
    assert res["parties_with_centroid_counts"].get("P1") == 2
    # P2 present in 2021-01 and 2021-02 -> 2
    assert res["parties_with_centroid_counts"].get("P2") == 2
    # P3 present in 2021-02 -> 1
    assert res["parties_with_centroid_counts"].get("P3") == 1

    # mismatched_mp_ids_sample should contain 'unknown_mp'
    assert "unknown_mp" in res["mismatched_mp_ids_sample"]
    # mp_id_set should contain all seen MPs
    assert res["mp_id_set"] >= {"mp_1", "mp_2 (Amsterdam)", "mp_3", "unknown_mp"}