The recent i18n fixes seem to have broken some tests if LANG=de_DE.UTF-8.
response.mustcontain('<span class="error-message">Invalid value</span>')
Since I don't know how to translate strings in pytest I create this issue.
with test_context(self.app): still results in
TypeError: No object (name: context) has been registered for this thread when trying to use
_("Text to translate")