Test your Validations with a List of test input String, ValidationExpectation pairs.

import Form.Error
import Form.Test exposing (..)
import Form.Test.ValidationExpectation exposing (ValidationExpectation(..))
import Form.Validate


describeValidation "email"
   Form.Validate.email
   [ ( "[email protected]", Valid )
   , ( "This is definitely not an email address"
     , Invalid Form.Error.InvalidEmail
     )
   ]

Create a single test case for a Validation.

import Form.Error
import Form.Test exposing (..)
import Form.Test.ValidationExpectation exposing (ValidationExpectation(..))
import Form.Validate


testValidation Form.Validate.email ( "[email protected]", Valid )