test_util.py

import pytest
from qtpy.QtCore import QSize

from napari_matplotlib.util import Interval, from_napari_css_get_size_of


def test_interval():
    interval = Interval(4, 9)
    for i in range(4, 10):
        assert i in interval

    assert 3 not in interval
    assert 10 not in interval

    with pytest.raises(ValueError, match="must be an integer"):
        "string" in interval  # type: ignore


def test_get_size_from_css(mocker):
    """Test getting the max-width and max-height from something in css"""
    # some weird (but valid) css to check we can skip things correctly
    test_css = """
        Flibble {
            padding: 0 0 1px 2px;
            color: rgb(3, 4, 555);
            min-width : 0;
            max-width : 123px;
            min-height : 0%;
            max-height : 456px;
        }
        """
    mocker.patch("napari.qt.get_current_stylesheet").return_value = test_css
    assert from_napari_css_get_size_of("Flibble", fallback=(1, 2)) == QSize(
        123, 456
    )


def test_fallback_if_missing_dimensions(mocker):
    """Test fallback if given something that doesn't have dimensions"""
    test_css = " Flobble { background-color: rgb(0, 97, 163); } "
    mocker.patch("napari.qt.get_current_stylesheet").return_value = test_css
    with pytest.warns(RuntimeWarning, match="Unable to find DimensionToken"):
        assert from_napari_css_get_size_of(
            "Flobble", fallback=(1, 2)
        ) == QSize(1, 2)


def test_fallback_if_prelude_not_in_css():
    """Test fallback if given something not in the css"""
    doesntexist = "AQButtonThatDoesntExist"
    with pytest.warns(RuntimeWarning, match=f"Unable to find {doesntexist}"):
        assert from_napari_css_get_size_of(
            doesntexist, fallback=(1, 2)
        ) == QSize(1, 2)