"""Unit tests for :mod:`otko.views.formatting` (no Qt required)."""

from __future__ import annotations

import pytest

from otko.core import UnitSystem
from otko.views.formatting import (
    DOF_LABELS,
    MASS_LABELS,
    RESTRAINT_LABELS,
    format_number,
    parse_float,
    parse_int,
    unit_label,
)


def test_label_tuples() -> None:
    assert DOF_LABELS == ("Ux", "Uy", "Uz", "Rx", "Ry", "Rz")
    assert MASS_LABELS == ("Mx", "My", "Mz", "Ixx", "Iyy", "Izz")
    assert RESTRAINT_LABELS == ("Ux", "Uy", "Uz", "Rx", "Ry", "Rz")


def test_format_number() -> None:
    assert format_number(50.0) == "50"
    assert format_number(1.5) == "1.5"


def test_parse_float_required() -> None:
    with pytest.raises(ValueError):
        parse_float("", "x")


def test_parse_float_allow_empty() -> None:
    assert parse_float("", "x", allow_empty=True) == 0.0


def test_parse_int_rejects_fractional() -> None:
    with pytest.raises(ValueError):
        parse_int("1.5", "x")


def test_unit_label() -> None:
    assert unit_label("force", UnitSystem.SI_M_N) == "N"
    assert unit_label("moment", UnitSystem.US_FT_KIP) == "kip·ft"


def test_unit_label_unknown_quantity() -> None:
    with pytest.raises(ValueError):
        unit_label("temperature", UnitSystem.SI_M_N)