Function test_RangeManager_3

pyxrf/gui_module/tests/test_useful_widgets.py:318–368

Test `set_selection()` method

(qtbot, full_range, selection, value_type)

])
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def test_RangeManager_3(qtbot, full_range, selection, value_type):
    """Test `set_selection()` method"""

    slider_steps = 1000
    selection_to_range_min = 0.01

    rman = RangeManager(slider_steps=slider_steps, selection_to_range_min=selection_to_range_min)
    qtbot.addWidget(rman)
    rman.show()

    rman.set_value_type(value_type)
    rman.set_range(full_range[0], full_range[1])

    def _clip_selection(sel, rng, selection_to_range_min):
        """
        Clip the selection values to compute the expected selection.
        Reproduces the clipping performed by the RangeManager.
        """
        sel = [max(min(_, rng[1]), rng[0]) for _ in sel]
        if value_type == "float":
            min_diff = (rng[1] - rng[0]) * selection_to_range_min
        else:
            min_diff = 1
        if sel[1] - sel[0] < min_diff:
            sel[1] = sel[0] + min_diff
            if sel[1] > rng[1]:
                sel = [rng[1] - min_diff, rng[1]]
        return sel

    sel = _clip_selection(selection, full_range, selection_to_range_min)

    result_expected = True
    if tuple(sel) == tuple(full_range):
        result_expected = False

    result = rman.set_selection(value_low=selection[0], value_high=selection[1])
    assert result == result_expected, f"Incorrect return value {result} by `set_selection()` method"

    npt.assert_array_almost_equal(rman.get_selection(), sel, err_msg="Selection is set incorrectly")
    # Verify that selection is displayed correctly
    assert rman.le_min_value.text() == f"{sel[0]:.10g}", "Lower boundary is displayed incorrectly"
    assert rman.le_max_value.text() == f"{sel[1]:.10g}", "Upper boundary is displayed incorrectly"

    # Check positions of the sliders
    step = (full_range[1] - full_range[0]) / slider_steps
    assert rman.sld_min_value.value() == slider_steps - round(
        (sel[0] - full_range[0]) / step
    ), "Slider position (min. value) is incorrect"
    assert rman.sld_max_value.value() == round(
        (sel[1] - full_range[0]) / step
    ), "Slider position (max. value) is incorrect"


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