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import pytest
from tests.common import DummyPostData
from wtforms import validators
from wtforms.fields import SelectField
from wtforms.fields import SelectMultipleField
from wtforms.form import Form
def make_form(name="F", **fields):
return type(str(name), (Form,), fields)
class F(Form):
a = SelectMultipleField(
choices=[("a", "hello"), ("b", "bye"), ("c", "something")], default=("a",)
)
b = SelectMultipleField(
coerce=int, choices=[(1, "A"), (2, "B"), (3, "C")], default=("1", "3")
)
def test_defaults():
form = F()
assert form.a.data == ["a"]
assert form.b.data == [1, 3]
# Test for possible regression with null data
form.a.data = None
assert form.validate()
assert list(form.a.iter_choices()) == [
(value, label, False, {}) for value, label in form.a.choices
]
def test_with_data():
form = F(DummyPostData(a=["a", "c"]))
assert form.a.data == ["a", "c"]
assert list(form.a.iter_choices()) == [
("a", "hello", True, {}),
("b", "bye", False, {}),
("c", "something", True, {}),
]
assert form.b.data == []
form = F(DummyPostData(b=["1", "2"]))
assert form.b.data == [1, 2]
assert form.validate()
form = F(DummyPostData(b=["1", "2", "4"]))
assert form.b.data == [1, 2, 4]
assert not form.validate()
def test_coerce_fail():
form = F(b=["a"])
assert form.validate()
assert form.b.data is None
form = F(DummyPostData(b=["fake"]))
assert not form.validate()
assert form.b.data == [1, 3]
def test_callable_choices():
def choices():
return ["foo", "bar"]
F = make_form(a=SelectField(choices=choices))
form = F(a="bar")
assert list(str(x) for x in form.a) == [
'<option value="foo">foo</option>',
'<option selected value="bar">bar</option>',
]
def test_choice_shortcut():
F = make_form(a=SelectMultipleField(choices=["foo", "bar"]))
form = F(a=["bar"])
assert form.validate()
assert '<option value="foo">foo</option>' in form.a()
@pytest.mark.parametrize("choices", [[], None])
def test_empty_choice(choices):
F = make_form(a=SelectMultipleField(choices=choices))
form = F(a="bar")
assert form.a() == '<select id="a" multiple name="a"></select>'
def test_validate_choices_when_empty():
F = make_form(a=SelectMultipleField(choices=[]))
form = F(DummyPostData(a=["b"]))
assert not form.validate()
assert form.a.data == ["b"]
assert len(form.a.errors) == 1
assert form.a.errors[0] == "'b' is not a valid choice for this field."
def test_validate_choices_when_none():
F = make_form(a=SelectMultipleField())
form = F(DummyPostData(a="b"))
with pytest.raises(TypeError, match="Choices cannot be None"):
form.validate()
def test_dont_validate_choices():
F = make_form(a=SelectMultipleField(choices=[("a", "Foo")], validate_choice=False))
form = F(DummyPostData(a=["b"]))
assert form.validate()
assert form.a.data == ["b"]
assert len(form.a.errors) == 0
def test_choices_can_be_none_when_choice_validation_is_disabled():
F = make_form(a=SelectMultipleField(validate_choice=False))
form = F(DummyPostData(a="b"))
assert form.validate()
def test_requried_flag():
F = make_form(
c=SelectMultipleField(
choices=[("a", "hello"), ("b", "bye")],
validators=[validators.InputRequired()],
)
)
form = F(DummyPostData(c=["a"]))
assert form.c() == (
'<select id="c" multiple name="c" required>'
'<option selected value="a">hello</option>'
'<option value="b">bye</option>'
"</select>"
)
def test_required_validator():
F = make_form(
c=SelectMultipleField(
choices=[("a", "hello"), ("b", "bye")],
validators=[validators.InputRequired()],
)
)
form = F(DummyPostData(c=["a"]))
assert form.validate()
assert form.c.errors == []
form = F()
assert form.validate() is False
assert form.c.errors == ["This field is required."]
def test_render_kw_preserved():
F = make_form(
a=SelectMultipleField(choices=[("foo"), ("bar")], render_kw=dict(disabled=True))
)
form = F()
assert form.a() == (
'<select disabled id="a" multiple name="a">'
'<option value="foo">foo</option>'
'<option value="bar">bar</option>'
"</select>"
)
def test_option_render_kw():
F = make_form(
a=SelectMultipleField(
choices=[("a", "Foo", {"title": "foobar", "data-foo": "bar"})]
)
)
form = F(a="a")
assert (
'<option data-foo="bar" selected title="foobar" value="a">Foo</option>'
in form.a()
)
assert list(form.a.iter_choices()) == [
("a", "Foo", True, {"title": "foobar", "data-foo": "bar"})
]
def test_optgroup_option_render_kw():
F = make_form(
a=SelectMultipleField(
choices={"hello": [("a", "Foo", {"title": "foobar", "data-foo": "bar"})]}
)
)
form = F(a="a")
assert (
'<optgroup label="hello">'
'<option data-foo="bar" selected title="foobar" value="a">Foo</option>'
"</optgroup>" in form.a()
)
assert list(form.a.iter_choices()) == [
("a", "Foo", True, {"title": "foobar", "data-foo": "bar"})
]
def test_can_supply_coercable_values_as_options():
F = make_form(
a=SelectMultipleField(
choices=[("1", "One"), ("2", "Two")],
coerce=int,
)
)
post_data = DummyPostData(a=["1", "2"])
form = F(post_data)
assert form.validate()
assert form.a.data == [1, 2]
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