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86 lines
4.0 KiB
Python
86 lines
4.0 KiB
Python
import pickle
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from django.core.exceptions import ValidationError
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from django.core.files.uploadedfile import SimpleUploadedFile
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from django.forms import FileField
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from django.test import SimpleTestCase
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class FileFieldTest(SimpleTestCase):
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def test_filefield_1(self):
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f = FileField()
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with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
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f.clean('')
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with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
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f.clean('', '')
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self.assertEqual('files/test1.pdf', f.clean('', 'files/test1.pdf'))
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with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
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f.clean(None)
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with self.assertRaisesMessage(ValidationError, "'This field is required.'"):
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f.clean(None, '')
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self.assertEqual('files/test2.pdf', f.clean(None, 'files/test2.pdf'))
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no_file_msg = "'No file was submitted. Check the encoding type on the form.'"
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file = SimpleUploadedFile(None, b'')
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file._name = ''
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with self.assertRaisesMessage(ValidationError, no_file_msg):
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f.clean(file)
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with self.assertRaisesMessage(ValidationError, no_file_msg):
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f.clean(file, '')
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self.assertEqual('files/test3.pdf', f.clean(None, 'files/test3.pdf'))
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with self.assertRaisesMessage(ValidationError, no_file_msg):
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f.clean('some content that is not a file')
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with self.assertRaisesMessage(ValidationError, "'The submitted file is empty.'"):
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f.clean(SimpleUploadedFile('name', None))
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with self.assertRaisesMessage(ValidationError, "'The submitted file is empty.'"):
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f.clean(SimpleUploadedFile('name', b''))
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self.assertEqual(SimpleUploadedFile, type(f.clean(SimpleUploadedFile('name', b'Some File Content'))))
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self.assertIsInstance(
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f.clean(SimpleUploadedFile('我隻氣墊船裝滿晒鱔.txt', 'मेरी मँडराने वाली नाव सर्पमीनों से भरी ह'.encode())),
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SimpleUploadedFile
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)
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self.assertIsInstance(
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f.clean(SimpleUploadedFile('name', b'Some File Content'), 'files/test4.pdf'),
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SimpleUploadedFile
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)
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def test_filefield_2(self):
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f = FileField(max_length=5)
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with self.assertRaisesMessage(ValidationError, "'Ensure this filename has at most 5 characters (it has 18).'"):
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f.clean(SimpleUploadedFile('test_maxlength.txt', b'hello world'))
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self.assertEqual('files/test1.pdf', f.clean('', 'files/test1.pdf'))
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self.assertEqual('files/test2.pdf', f.clean(None, 'files/test2.pdf'))
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self.assertIsInstance(f.clean(SimpleUploadedFile('name', b'Some File Content')), SimpleUploadedFile)
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def test_filefield_3(self):
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f = FileField(allow_empty_file=True)
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self.assertIsInstance(f.clean(SimpleUploadedFile('name', b'')), SimpleUploadedFile)
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def test_filefield_changed(self):
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"""
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The value of data will more than likely come from request.FILES. The
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value of initial data will likely be a filename stored in the database.
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Since its value is of no use to a FileField it is ignored.
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"""
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f = FileField()
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# No file was uploaded and no initial data.
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self.assertFalse(f.has_changed('', None))
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# A file was uploaded and no initial data.
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self.assertTrue(f.has_changed('', {'filename': 'resume.txt', 'content': 'My resume'}))
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# A file was not uploaded, but there is initial data
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self.assertFalse(f.has_changed('resume.txt', None))
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# A file was uploaded and there is initial data (file identity is not dealt
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# with here)
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self.assertTrue(f.has_changed('resume.txt', {'filename': 'resume.txt', 'content': 'My resume'}))
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def test_disabled_has_changed(self):
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f = FileField(disabled=True)
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self.assertIs(f.has_changed('x', 'y'), False)
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def test_file_picklable(self):
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self.assertIsInstance(pickle.loads(pickle.dumps(FileField())), FileField)
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