public virtual void testRequiredValidator()
{
RequiredValidator validator = new RequiredValidator();
TestValidatorContext validatorContext = new TestValidatorContext(null);
assertTrue(validator.validate("test", validatorContext));
assertTrue(validator.validate(1, validatorContext));
assertTrue(validator.validate(true, validatorContext));
// empty string and 'null' are invalid
assertFalse(validator.validate("", validatorContext));
assertFalse(validator.validate(null, validatorContext));
// can submit null if the value already exists
validatorContext = new TestValidatorContext(null, "fieldName");
validatorContext.VariableScope.setVariable("fieldName", "existingValue");
assertTrue(validator.validate(null, validatorContext));
}
