def test_Whisker():
whisker = Whisker()
assert whisker.plot is None
assert whisker.level == 'underlay'
assert whisker.lower is None
assert whisker.lower_units == 'data'
assert isinstance(whisker.lower_head, ArrowHead)
assert whisker.lower_head.size == 10
assert whisker.lower_head.level == 'underlay'
assert whisker.upper is None
assert whisker.upper_units == 'data'
assert isinstance(whisker.upper_head, ArrowHead)
assert whisker.upper_head.size == 10
assert whisker.upper_head.level == 'underlay'
assert whisker.base is None
assert whisker.dimension == 'height'
assert isinstance(whisker.source, ColumnDataSource)
assert whisker.x_range_name == 'default'
assert whisker.y_range_name == 'default'
check_line_properties(whisker, "")
check_properties_existence(whisker, [
"plot", "visible", "level", "lower", "lower_units", "lower_head",
"upper", "upper_units", "upper_head", "base", "base_units",
"dimension", "source", "x_range_name", "y_range_name"
], LINE)
def test_Whisker_and_Band_accept_negative_values():
whisker = Whisker(base=-1., lower=-1.5, upper=-0.5)
assert whisker.base == -1.
assert whisker.lower == -1.5
assert whisker.upper == -0.5
band = Band(base=-1., lower=-1.5, upper=-0.5)
assert band.base == -1.
assert band.lower == -1.5
assert band.upper == -0.5