Viewing github.com/django/django-stable-4.1.x/tests/forms_tests/widget_tests/test

```
import datetime
```
```
from django import forms
```

from django.forms import CheckboxSelectMultiple, ChoiceField, Form

from django.test import override_settings

```
from .base import WidgetTest
```

class CheckboxSelectMultipleTest(WidgetTest):

```
    widget = CheckboxSelectMultiple
```
```
    def test_render_value(self):
```
```
        self.check_html(
```

            self.widget(choices=self.beatles),

```
            "beatles",
```
```
            ["J"],
```
```
            html="""
```
```
            <div>
```

            <div><label><input checked type="checkbox" name="beatles" value="J"> John

```
            </label></div>
```

            <div><label><input type="checkbox" name="beatles" value="P"> Paul

```
            </label></div>
```

            <div><label><input type="checkbox" name="beatles" value="G"> George

```
            </label></div>
```

            <div><label><input type="checkbox" name="beatles" value="R"> Ringo

```
            </label></div>
```
```
            </div>
```
```
        """,
```
```
        )
```

    def test_render_value_multiple(self):

```
        self.check_html(
```

            self.widget(choices=self.beatles),

```
            "beatles",
```
```
            ["J", "P"],
```
```
            html="""
```
```
            <div>
```

            <div><label><input checked type="checkbox" name="beatles" value="J"> John

```
            </label></div>
```

            <div><label><input checked type="checkbox" name="beatles" value="P"> Paul

```
            </label></div>
```

            <div><label><input type="checkbox" name="beatles" value="G"> George

```
            </label></div>
```

            <div><label><input type="checkbox" name="beatles" value="R"> Ringo

```
            </label></div>
```
```
            </div>
```
```
        """,
```
```
        )
```
```
    def test_render_none(self):
```
```
        """
```

        If the value is None, none of the options are selected, even if the

```
        choices have an empty option.
```
```
        """
```
```
        self.check_html(
```

            self.widget(choices=(("", "Unknown"),) + self.beatles),

```
            "beatles",
```
```
            None,
```
```
            html="""
```
```
            <div>
```

            <div><label><input type="checkbox" name="beatles" value=""> Unknown

```
            </label></div>
```

            <div><label><input type="checkbox" name="beatles" value="J"> John

```
            </label></div>
```

            <div><label><input type="checkbox" name="beatles" value="P"> Paul

```
            </label></div>
```

            <div><label><input type="checkbox" name="beatles" value="G"> George

```
            </label></div>
```

            <div><label><input type="checkbox" name="beatles" value="R"> Ringo

```
            </label></div>
```
```
            </div>
```
```
        """,
```
```
        )
```
```
    def test_nested_choices(self):
```
```
        nested_choices = (
```
```
            ("unknown", "Unknown"),
```

            ("Audio", (("vinyl", "Vinyl"), ("cd", "CD"))),

            ("Video", (("vhs", "VHS"), ("dvd", "DVD"))),

```
        )
```
```
        html = """
```
```
        <div id="media">
```
```
        <div> <label for="media_0">
```

        <input type="checkbox" name="nestchoice" value="unknown" id="media_0"> Unknown

```
        </label></div>
```
```
        <div>
```
```
        <label>Audio</label>
```
```
        <div> <label for="media_1_0">
```

        <input checked type="checkbox" name="nestchoice" value="vinyl" id="media_1_0">

```
        Vinyl</label></div>
```
```
        <div> <label for="media_1_1">
```

        <input type="checkbox" name="nestchoice" value="cd" id="media_1_1"> CD

```
        </label></div>
```
```
        </div><div>
```
```
        <label>Video</label>
```
```
        <div> <label for="media_2_0">
```

        <input type="checkbox" name="nestchoice" value="vhs" id="media_2_0"> VHS

```
        </label></div>
```
```
        <div> <label for="media_2_1">
```

        <input type="checkbox" name="nestchoice" value="dvd" id="media_2_1" checked> DVD

```
        </label></div>
```
```
        </div>
```
```
        </div>
```
```
        """
```
```
        self.check_html(
```

            self.widget(choices=nested_choices),

```
            "nestchoice",
```
```
            ("vinyl", "dvd"),
```
```
            attrs={"id": "media"},
```
```
            html=html,
```
```
        )
```

    def test_nested_choices_without_id(self):

```
        nested_choices = (
```
```
            ("unknown", "Unknown"),
```

            ("Audio", (("vinyl", "Vinyl"), ("cd", "CD"))),

            ("Video", (("vhs", "VHS"), ("dvd", "DVD"))),

```
        )
```
```
        html = """
```
```
        <div>
```
```
        <div> <label>
```

        <input type="checkbox" name="nestchoice" value="unknown"> Unknown</label></div>

```
        <div>
```
```
        <label>Audio</label>
```
```
        <div> <label>
```

        <input checked type="checkbox" name="nestchoice" value="vinyl"> Vinyl

```
        </label></div>
```
```
        <div> <label>
```

        <input type="checkbox" name="nestchoice" value="cd"> CD</label></div>

```
        </div><div>
```
```
        <label>Video</label>
```
```
        <div> <label>
```

        <input type="checkbox" name="nestchoice" value="vhs"> VHS</label></div>

```
        <div> <label>
```

        <input type="checkbox" name="nestchoice" value="dvd"checked> DVD</label></div>

```
        </div>
```
```
        </div>
```
```
        """
```
```
        self.check_html(
```

            self.widget(choices=nested_choices),

```
            "nestchoice",
```
```
            ("vinyl", "dvd"),
```
```
            html=html,
```
```
        )
```
```
    def test_separate_ids(self):
```
```
        """
```
```
        Each input gets a separate ID.
```
```
        """
```

        choices = [("a", "A"), ("b", "B"), ("c", "C")]

```
        html = """
```
```
        <div id="abc">
```
```
        <div>
```
```
        <label for="abc_0">
```

        <input checked type="checkbox" name="letters" value="a" id="abc_0"> A</label>

```
        </div>
```
```
        <div><label for="abc_1">
```

        <input type="checkbox" name="letters" value="b" id="abc_1"> B</label></div>

```
        <div>
```
```
        <label for="abc_2">
```

        <input checked type="checkbox" name="letters" value="c" id="abc_2"> C</label>

```
        </div>
```
```
        </div>
```
```
        """
```
```
        self.check_html(
```

            self.widget(choices=choices),

```
            "letters",
```
```
            ["a", "c"],
```
```
            attrs={"id": "abc"},
```
```
            html=html,
```
```
        )
```

    def test_separate_ids_constructor(self):

```
        """
```

        Each input gets a separate ID when the ID is passed to the constructor.

```
        """
```

        widget = CheckboxSelectMultiple(

            attrs={"id": "abc"}, choices=[("a", "A"), ("b", "B"), ("c", "C")]

```
        )
```
```
        html = """
```
```
        <div id="abc">
```
```
        <div>
```
```
        <label for="abc_0">
```

        <input checked type="checkbox" name="letters" value="a" id="abc_0"> A</label>

```
        </div>
```
```
        <div><label for="abc_1">
```

        <input type="checkbox" name="letters" value="b" id="abc_1"> B</label></div>

```
        <div>
```
```
        <label for="abc_2">
```

        <input checked type="checkbox" name="letters" value="c" id="abc_2"> C</label>

```
        </div>
```
```
        </div>
```
```
        """
```

        self.check_html(widget, "letters", ["a", "c"], html=html)

    @override_settings(USE_THOUSAND_SEPARATOR=True)

    def test_doesnt_localize_input_value(self):

```
        choices = [
```
```
            (1, "One"),
```
```
            (1000, "One thousand"),
```
```
            (1000000, "One million"),
```
```
        ]
```
```
        html = """
```
```
        <div>
```

        <div><label><input type="checkbox" name="numbers" value="1"> One</label></div>

```
        <div><label>
```

        <input type="checkbox" name="numbers" value="1000"> One thousand</label></div>

```
        <div><label>
```

        <input type="checkbox" name="numbers" value="1000000"> One million</label></div>

```
        </div>
```
```
        """
```

        self.check_html(self.widget(choices=choices), "numbers", None, html=html)

```
        choices = [
```

            (datetime.time(0, 0), "midnight"),

            (datetime.time(12, 0), "noon"),

```
        ]
```
```
        html = """
```
```
        <div>
```
```
        <div><label>
```

        <input type="checkbox" name="times" value="00:00:00"> midnight</label></div>

```
        <div><label>
```

        <input type="checkbox" name="times" value="12:00:00"> noon</label></div>

```
        </div>
```
```
        """
```

        self.check_html(self.widget(choices=choices), "times", None, html=html)

    def test_use_required_attribute(self):

        widget = self.widget(choices=self.beatles)

        # Always False because browser validation would require all checkboxes

        # to be checked instead of at least one.

        self.assertIs(widget.use_required_attribute(None), False)

        self.assertIs(widget.use_required_attribute([]), False)

        self.assertIs(widget.use_required_attribute(["J", "P"]), False)

    def test_value_omitted_from_data(self):

        widget = self.widget(choices=self.beatles)

        self.assertIs(widget.value_omitted_from_data({}, {}, "field"), False)

```
        self.assertIs(
```

            widget.value_omitted_from_data({"field": "value"}, {}, "field"), False

```
        )
```
```
    def test_label(self):
```
```
        """
```

        CheckboxSelectMultiple doesn't contain 'for="field_0"' in the <label>

        because clicking that would toggle the first checkbox.

```
        """
```
```
        class TestForm(forms.Form):
```

            f = forms.MultipleChoiceField(widget=CheckboxSelectMultiple)

```
        bound_field = TestForm()["f"]
```

        self.assertEqual(bound_field.field.widget.id_for_label("id"), "")

        self.assertEqual(bound_field.label_tag(), "<label>F:</label>")

        self.assertEqual(bound_field.legend_tag(), "<legend>F:</legend>")

```
    def test_fieldset(self):
```
```
        class TestForm(Form):
```

            template_name = "forms_tests/use_fieldset.html"

            field = ChoiceField(widget=self.widget, choices=self.beatles)

```
        form = TestForm()
```

        self.assertIs(self.widget.use_fieldset, True)

```
        self.assertHTMLEqual(
```
```
            form.render(),
```

            '<div><fieldset><legend>Field:</legend><div id="id_field">'

            '<div><label for="id_field_0"><input type="checkbox" '

            'name="field" value="J" id="id_field_0"> John</label></div>'

            '<div><label for="id_field_1"><input type="checkbox" '

            'name="field" value="P" id="id_field_1">Paul</label></div>'

            '<div><label for="id_field_2"><input type="checkbox" '

            'name="field" value="G" id="id_field_2"> George</label></div>'

            '<div><label for="id_field_3"><input type="checkbox" '

            'name="field" value="R" id="id_field_3">'

            "Ringo</label></div></div></fieldset></div>",

```
        )
```