def test_canonical_value_in_cascading_dropdown(
choices,
default_value,
expected_canonical,
):
assert vs.CascadingDropdown(
choices=choices).canonical_value() == expected_canonical
def test_default_value_in_cascading_dropdown(
choices,
default_value,
expected_default,
):
assert vs.CascadingDropdown(
choices=choices).default_value() == expected_default
def test_transform_value_in_cascading_dropdown():
valuespec = vs.CascadingDropdown(choices=[
("a", "Title a", vs.TextInput()),
("b", "Title b",
vs.Transform(
vs.TextInput(),
forth=lambda x: x if x == "lala" else x.upper(),
back=lambda x: x + "aaa",
)),
])
assert valuespec.transform_value(("a", "abc")) == ("a", "abc")
assert valuespec.transform_value(("b", "lala")) == ("b", "lalaaaa")
assert valuespec.transform_value(("b", "AAA")) == ("b", "AAAaaa")
