Simplified a ClearableFileInput test.

from django.core.files.uploadedfile import SimpleUploadedFile

from django.forms import ClearableFileInput

from django.utils import six

from django.utils.encoding import python_2_unicode_compatible

from .base import WidgetTest

            def __str__(self):

                return '''something<div onclick="alert('oops')">.jpg'''

        widget = ClearableFileInput()

        field = StrangeFieldFile()

        output = widget.render('my<div>file', field)

        self.assertNotIn(field.url, output)

        self.assertIn('href="something?chapter=1&sect=2&copy=3&lang=en"', output)

        self.assertNotIn(six.text_type(field), output)

        self.assertIn('something<div onclick="alert('oops')">.jpg', output)

        self.assertIn('my<div>file', output)

        self.assertNotIn('my<div>file', output)

        self.check_html(ClearableFileInput(), 'my<div>file', StrangeFieldFile(), html=(

            """

            Currently: <a href="something?chapter=1&amp;sect=2&amp;copy=3&amp;lang=en">

            something&lt;div onclick=&quot;alert(&#39;oops&#39;)&quot;&gt;.jpg</a>

            <input type="checkbox" name="my&lt;div&gt;file-clear" id="my&lt;div&gt;file-clear_id" />

            <label for="my&lt;div&gt;file-clear_id">Clear</label><br />

            Change: <input type="file" name="my&lt;div&gt;file" />

            """

        ))

    def test_clear_input_renders_only_if_not_required(self):

        """