def test_render_form_errors():
# Receive form with initial values
# POST form to create view
# Compare form.errors with MdcField(form.errors)
postform = PostForm({}) # should yield an invalid form
test_field = "date"
postform.is_valid() # ignore result
invalid_msg = postform[test_field].field.error_messages["invalid"]
postform.add_error(test_field, ValidationError(invalid_msg,
code="invalid"))
err_msg = "<br />".join(postform.errors[test_field])
ast_fld = MdcField.render(postform[test_field])
ast_err = MdcField.errors(postform[test_field])
ast = Div([], [ast_fld, ast_err])
html = render_element(ast)
test_str = f"""
<div>
<div class="mdc-text-field mdc-text-field--invalid" data-mdc-auto-init="MDCTextField">
<input name="date" required id="id_date" class="mdc-text-field__input" type="date" />
<label for="id_date" class="mdc-floating-label">Type = date:</label>
<div class="mdc-line-ripple"></div>
</div>
<div class="mdc-text-field-helper-line"><div class="mdc-text-field-helper-text--validation-msg mdc-text-field-helper-text mdc-text-field-helper-text--persistent" class="mdc-text-field-helper-text--validation-msg" id="{test_field}-helper-text">{err_msg}</div></div>
</div>
""" # noqa
test_str = re.sub(r"\n\s*", "", test_str)
assert html == test_str
def errors(f):
return Factory.errors(self[f])