<form>
<input type="text" form:required=t name="v">
<input type="text" form:required="no" name="v2">
<input type="text" form:validate="regex:[a-z]*" name="username"
 form:message="lower case only!">
<input type="text" form:validate="email" form:required="no"
 name="email">
<input type="text" form:validate="dateconverter" name="birth">
<input type="text" name="whatever">
</form>
----
<form>
<input type="text" name="v" value="">
<input type="text" name="v2" value="">
<input type="text" name="username" value="">
<input type="text" name="email" value="">
<input type="text" name="birth" value="">
<input type="text" name="whatever" value="">
</form>
----
def check(parser, schema):
    assert schema
    names = sorted(schema.fields)
    assert names == 'birth email username v v2 whatever'.split()
