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import pytest
from tests.common import DummyPostData
from wtforms import validators
from wtforms import widgets
from wtforms.fields import SelectField
from wtforms.form import Form
def make_form(name="F", **fields):
return type(str(name), (Form,), fields)
def test_select_field_copies_choices():
class F(Form):
items = SelectField(choices=[])
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
def add_choice(self, choice):
self.items.choices.append((choice, choice))
f1 = F()
f2 = F()
f1.add_choice("a")
f2.add_choice("b")
assert f1.items.choices == [("a", "a")]
assert f2.items.choices == [("b", "b")]
assert f1.items.choices is not f2.items.choices
class F(Form):
a = SelectField(choices=[("a", "hello"), ("btest", "bye")], default="a")
b = SelectField(
choices=[(1, "Item 1"), (2, "Item 2")],
coerce=int,
option_widget=widgets.TextInput(),
)
def test_defaults():
form = F()
assert form.a.data == "a"
assert form.b.data is None
assert form.validate() is False
assert form.a() == (
'<select id="a" name="a"><option selected value="a">hello</option>'
'<option value="btest">bye</option></select>'
)
assert form.b() == (
'<select id="b" name="b"><option value="1">Item 1</option>'
'<option value="2">Item 2</option></select>'
)
def test_with_data():
form = F(DummyPostData(a=["btest"]))
assert form.a.data == "btest"
assert form.a() == (
'<select id="a" name="a"><option value="a">hello</option>'
'<option selected value="btest">bye</option></select>'
)
def test_value_coercion():
form = F(DummyPostData(b=["2"]))
assert form.b.data == 2
assert form.b.validate(form)
form = F(DummyPostData(b=["b"]))
assert form.b.data is None
assert not form.b.validate(form)
def test_iterable_options():
form = F()
first_option = list(form.a)[0]
assert isinstance(first_option, form.a._Option)
assert list(str(x) for x in form.a) == [
'<option selected value="a">hello</option>',
'<option value="btest">bye</option>',
]
assert isinstance(first_option.widget, widgets.Option)
assert isinstance(list(form.b)[0].widget, widgets.TextInput)
assert (
first_option(disabled=True)
== '<option disabled selected value="a">hello</option>'
)
def test_default_coerce():
F = make_form(a=SelectField(choices=[("a", "Foo")]))
form = F(DummyPostData(a=[]))
assert not form.validate()
assert form.a.data is None
assert len(form.a.errors) == 1
assert form.a.errors[0] == "Not a valid choice."
def test_validate_choices():
F = make_form(a=SelectField(choices=[("a", "Foo")]))
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] == "Not a valid choice."
def test_validate_choices_when_empty():
F = make_form(a=SelectField(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] == "Not a valid choice."
def test_validate_choices_when_none():
F = make_form(a=SelectField())
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=SelectField(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=SelectField(validate_choice=False))
form = F(DummyPostData(a="b"))
assert form.validate()
def test_choice_shortcut():
F = make_form(a=SelectField(choices=["foo", "bar"], validate_choice=False))
form = F(a="bar")
assert '<option value="foo">foo</option>' in form.a()
def test_choice_shortcut_post():
F = make_form(a=SelectField(choices=["foo", "bar"]))
form = F(DummyPostData(a=["foo"]))
assert form.validate()
assert form.a.data == "foo"
assert len(form.a.errors) == 0
@pytest.mark.parametrize("choices", [[], None, {}])
def test_empty_choice(choices):
F = make_form(a=SelectField(choices=choices, validate_choice=False))
form = F(a="bar")
assert form.a() == '<select id="a" name="a"></select>'
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_requried_flag():
F = make_form(
c=SelectField(
choices=[("a", "hello"), ("b", "bye")],
validators=[validators.InputRequired()],
)
)
form = F(DummyPostData(c="a"))
assert form.c() == (
'<select id="c" name="c" required>'
'<option selected value="a">hello</option>'
'<option value="b">bye</option>'
"</select>"
)
def test_required_validator():
F = make_form(
c=SelectField(
choices=[("a", "hello"), ("b", "bye")],
validators=[validators.InputRequired()],
)
)
form = F(DummyPostData(c="b"))
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=SelectField(choices=[("foo"), ("bar")], render_kw=dict(disabled=True))
)
form = F()
assert form.a() == (
'<select disabled id="a" name="a">'
'<option value="foo">foo</option>'
'<option value="bar">bar</option>'
"</select>"
)
def test_optgroup():
F = make_form(a=SelectField(choices={"hello": [("a", "Foo")]}))
form = F(a="a")
assert (
'<optgroup label="hello">'
'<option selected value="a">Foo</option>'
"</optgroup>" in form.a()
)
assert list(form.a.iter_choices()) == [("a", "Foo", True, {})]
def test_optgroup_shortcut():
F = make_form(a=SelectField(choices={"hello": ["foo", "bar"]}))
form = F(a="bar")
assert (
'<optgroup label="hello">'
'<option value="foo">foo</option>'
'<option selected value="bar">bar</option>'
"</optgroup>" in form.a()
)
assert list(form.a.iter_choices()) == [
("foo", "foo", False, {}),
("bar", "bar", True, {}),
]
@pytest.mark.parametrize("choices", [[], ()])
def test_empty_optgroup(choices):
F = make_form(a=SelectField(choices={"hello": choices}))
form = F(a="bar")
assert '<optgroup label="hello"></optgroup>' in form.a()
assert list(form.a.iter_choices()) == []
def test_option_render_kw():
F = make_form(
a=SelectField(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=SelectField(
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"})
]
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