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103 lines
3.9 KiB
Python
103 lines
3.9 KiB
Python
import os
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import unittest
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from django.core.exceptions import ValidationError
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from django.core.files.uploadedfile import (
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SimpleUploadedFile, TemporaryUploadedFile,
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)
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from django.forms import ClearableFileInput, FileInput, ImageField, Widget
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from django.test import SimpleTestCase
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from . import FormFieldAssertionsMixin
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try:
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from PIL import Image
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except ImportError:
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Image = None
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def get_img_path(path):
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return os.path.join(os.path.abspath(os.path.join(__file__, '..', '..')), 'tests', path)
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@unittest.skipUnless(Image, "Pillow is required to test ImageField")
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class ImageFieldTest(FormFieldAssertionsMixin, SimpleTestCase):
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def test_imagefield_annotate_with_image_after_clean(self):
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f = ImageField()
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img_path = get_img_path('filepath_test_files/1x1.png')
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with open(img_path, 'rb') as img_file:
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img_data = img_file.read()
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img_file = SimpleUploadedFile('1x1.png', img_data)
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img_file.content_type = 'text/plain'
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uploaded_file = f.clean(img_file)
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self.assertEqual('PNG', uploaded_file.image.format)
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self.assertEqual('image/png', uploaded_file.content_type)
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def test_imagefield_annotate_with_bitmap_image_after_clean(self):
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"""
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This also tests the situation when Pillow doesn't detect the MIME type
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of the image (#24948).
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"""
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from PIL.BmpImagePlugin import BmpImageFile
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try:
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Image.register_mime(BmpImageFile.format, None)
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f = ImageField()
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img_path = get_img_path('filepath_test_files/1x1.bmp')
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with open(img_path, 'rb') as img_file:
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img_data = img_file.read()
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img_file = SimpleUploadedFile('1x1.bmp', img_data)
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img_file.content_type = 'text/plain'
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uploaded_file = f.clean(img_file)
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self.assertEqual('BMP', uploaded_file.image.format)
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self.assertIsNone(uploaded_file.content_type)
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finally:
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Image.register_mime(BmpImageFile.format, 'image/bmp')
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def test_file_extension_validation(self):
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f = ImageField()
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img_path = get_img_path('filepath_test_files/1x1.png')
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with open(img_path, 'rb') as img_file:
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img_data = img_file.read()
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img_file = SimpleUploadedFile('1x1.txt', img_data)
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with self.assertRaisesMessage(ValidationError, 'File extension “txt” is not allowed.'):
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f.clean(img_file)
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def test_corrupted_image(self):
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f = ImageField()
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img_file = SimpleUploadedFile('not_an_image.jpg', b'not an image')
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msg = (
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'Upload a valid image. The file you uploaded was either not an '
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'image or a corrupted image.'
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)
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with self.assertRaisesMessage(ValidationError, msg):
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f.clean(img_file)
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with TemporaryUploadedFile('not_an_image_tmp.png', 'text/plain', 1, 'utf-8') as tmp_file:
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with self.assertRaisesMessage(ValidationError, msg):
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f.clean(tmp_file)
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def test_widget_attrs_default_accept(self):
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f = ImageField()
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# Nothing added for non-FileInput widgets.
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self.assertEqual(f.widget_attrs(Widget()), {})
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self.assertEqual(f.widget_attrs(FileInput()), {'accept': 'image/*'})
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self.assertEqual(f.widget_attrs(ClearableFileInput()), {'accept': 'image/*'})
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self.assertWidgetRendersTo(f, '<input type="file" name="f" accept="image/*" required id="id_f" />')
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def test_widget_attrs_accept_specified(self):
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f = ImageField(widget=FileInput(attrs={'accept': 'image/png'}))
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self.assertEqual(f.widget_attrs(f.widget), {})
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self.assertWidgetRendersTo(f, '<input type="file" name="f" accept="image/png" required id="id_f" />')
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def test_widget_attrs_accept_false(self):
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f = ImageField(widget=FileInput(attrs={'accept': False}))
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self.assertEqual(f.widget_attrs(f.widget), {})
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self.assertWidgetRendersTo(f, '<input type="file" name="f" required id="id_f" />')
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