tests: check editing a file field in a formdata created by workflow (#53432)

tests/form_pages/test_all.py

@@ -9021,3 +9021,91 @@ def test_form_item_timetable_data_source_with_date_alignment(pub, http_requests)
         resp = resp.form.submit('submit')
         resp = resp.form.submit('submit')
         assert formdef.data_class().count() == 1
+
+
+def test_file_prefill_on_edit(pub, http_requests):
+    user = create_user(pub)
+    formdef = create_formdef()
+    formdef.fields = [fields.FileField(id='0', label='file', type='file', varname='foo_file')]
+    formdef.store()
+    formdef.data_class().wipe()
+
+    workflow = Workflow(name='test')
+    st1 = workflow.add_status('New', 'st1')
+    st2 = workflow.add_status('CreateFormdata')
+
+    editable = EditableWorkflowStatusItem()
+    editable.id = '_editable'
+    editable.by = ['_submitter', '_receiver']
+    st1.items.append(editable)
+    editable.parent = st1
+
+    jump = ChoiceWorkflowStatusItem()
+    jump.id = '_resubmit'
+    jump.label = 'Resubmit'
+    jump.by = ['_submitter']
+    jump.status = st2.id
+    jump.parent = st1
+    st1.items.append(jump)
+
+    create_formdata = CreateFormdataWorkflowStatusItem()
+    create_formdata.id = '_create_formdata'
+    create_formdata.formdef_slug = formdef.url_name
+    create_formdata.mappings = [
+        Mapping(field_id='0', expression='{{form_var_foo_file}}'),
+    ]
+    create_formdata.parent = st2
+    st2.items.append(create_formdata)
+
+    workflow.store()
+    formdef.workflow_id = workflow.id
+    formdef.store()
+
+    upload = Upload('test.txt', b'foobar', 'text/plain')
+    resp = get_app(pub).get('/test/')
+    resp.forms[0]['f0$file'] = upload
+    resp = resp.form.submit('submit')  # -> validation page
+    resp = resp.form.submit('submit')  # -> submit
+
+    assert resp.status_int == 302
+    resp = resp.follow()
+    assert 'The form has been recorded' in resp.text
+    resp = resp.click('test.txt')
+    assert resp.location.endswith('/test.txt')
+    resp = resp.follow()
+    assert resp.content_type == 'text/plain'
+    assert resp.text == 'foobar'
+
+    formdata = formdef.data_class().select()[0]
+    formdata.user_id = user.id
+    formdata.store()
+
+    app = login(get_app(pub), username='foo', password='foo')
+    resp = app.get('/test/%s/' % formdata.id)
+    assert 'button_editable-button' in resp.text
+
+    # go to edition page
+    resp = resp.form.submit('button_editable').follow()
+    # file is "prefilled"
+    assert 'test.txt' in resp.text
+
+    # go back to form page and trigger formdata creation
+    resp = app.get('/test/%s/' % formdata.id)
+    resp = resp.form.submit('button_resubmit')
+    assert resp.status == '303 See Other'
+    resp = resp.follow()
+
+    assert formdef.data_class().count() == 2
+    new_formdata = formdef.data_class().select(lambda x: str(x.id) != str(formdata.id))[0]
+    assert new_formdata.data['0'].orig_filename == 'test.txt'
+    assert new_formdata.data['0'].get_content() == b'foobar'
+
+    resp = app.get('/test/%s/' % new_formdata.id)
+    assert 'button_editable-button' in resp.text
+    # go to edition page
+    resp = resp.form.submit('button_editable').follow()
+    # file is "prefilled"
+    assert 'test.txt' in resp.text
+    # and persist after being saved again
+    resp = resp.form.submit('submit').follow()
+    assert '<span>test.txt</span>' in resp.text