"""Tests for src/pygui/backend/visualization/graph_quick_item.py."""
import pytest

pytestmark = pytest.mark.usefixtures("qapp")


def test_no_data_initially():
    from pygui.backend.visualization.graph_quick_item import GraphQuickItem

    item = GraphQuickItem()
    assert item.seriesData == []
    assert item.sensorNames == []


def test_series_data_setter_stores_series():
    from pygui.backend.visualization.graph_quick_item import GraphQuickItem

    item = GraphQuickItem()
    item.seriesData = [[150.0, 151.0], [148.0, 147.5]]

    assert item.seriesData == [[150.0, 151.0], [148.0, 147.5]]


def test_series_data_auto_ranges_y_with_padding():
    from pygui.backend.visualization.graph_quick_item import GraphQuickItem

    item = GraphQuickItem()
    item.seriesData = [[150.0, 100.0], [200.0, 120.0]]

    # min=100, max=200, range=100, 10% pad => [90, 210]
    assert item._min_y == pytest.approx(90.0)
    assert item._max_y == pytest.approx(210.0)


def test_series_data_empty_keeps_default_range():
    from pygui.backend.visualization.graph_quick_item import GraphQuickItem

    item = GraphQuickItem()
    item.seriesData = []

    assert item._min_y == 0.0
    assert item._max_y == 150.0


def test_sensor_names_setter_stores_names():
    from pygui.backend.visualization.graph_quick_item import GraphQuickItem

    item = GraphQuickItem()
    item.sensorNames = ["Sensor 1", "Sensor 2"]

    assert item.sensorNames == ["Sensor 1", "Sensor 2"]


def test_non_numeric_values_are_skipped_not_crashing():
    from pygui.backend.visualization.graph_quick_item import GraphQuickItem

    item = GraphQuickItem()
    item.seriesData = [[150.0, "bad", 151.0]]

    assert item._min_y == pytest.approx(149.9)
    assert item._max_y == pytest.approx(151.1)