misc: autoconvert HEIC files (#88586)

tests/form_pages/test_file_field.py

@@ -592,3 +592,23 @@ def test_file_download_url_on_wrong_field(pub):
     resp = resp.form.submit('submit').follow()  # -> submit
     formdata = formdef.data_class().select()[0]
     app.get(formdata.get_url() + 'files/1/', status=404)
+
+
+def test_file_auto_convert_heic(pub):
+    FormDef.wipe()
+    formdef = FormDef()
+    formdef.name = 'test'
+    formdef.fields = [fields.FileField(id='0', label='field label')]
+    formdef.store()
+    formdef.data_class().wipe()
+
+    with open(os.path.join(os.path.dirname(__file__), '..', 'image.heic'), 'rb') as fd:
+        upload = Upload('image.heic', fd.read(), 'image/heic')
+
+    resp = get_app(pub).get('/test/')
+    resp.forms[0]['f0$file'] = upload
+    resp = resp.forms[0].submit('submit')  # -> validation
+    resp = resp.forms[0].submit('submit')  # -> submit
+    resp = resp.follow()
+    assert resp.click('image.jpeg').follow().content_type == 'image/jpeg'
+    assert b'JFIF' in resp.click('image.jpeg').follow().body