private void Validate(Account model, System.Linq.Expressions.Expression <System.Func <Account, string> > expression, bool shouldHaveError = false)
{
var result = validator.TestValidate(model);
if (shouldHaveError)
{
result.ShouldHaveValidationErrorFor(expression);
}
else
{
result.ShouldNotHaveValidationErrorFor(expression);
}
}
