public void The_failure_message_returned_is_the_first_to_fail()
{
var first = new ArgumentsRule(o => "first error");
var second = new ArgumentsRule(o => "second error");
var appliedOption = new AppliedOption(Create.Option("-x", ""));
first.And(second).Validate(appliedOption).Should().Be("first error");
}
public void Composed_rule_results_are_equivalent_when_one_is_successful_and_the_other_fails()
{
var fail = new ArgumentsRule(o => "fail");
var succeed = new ArgumentsRule(o => "fail");
var appliedOption = new AppliedOption(Create.Option("-x", ""));
fail.And(succeed).Validate(appliedOption).Should().Be("fail");
succeed.And(fail).Validate(appliedOption).Should().Be("fail");
}
public void Later_rules_are_not_evaluated()
{
var secondRuleWasCalled = false;
var first = new ArgumentsRule(o => "first error");
var second = new ArgumentsRule(o =>
{
secondRuleWasCalled = true;
return("second error");
});
var appliedOption = new AppliedOption(Create.Option("-x", ""));
first.And(second).Validate(appliedOption);
secondRuleWasCalled.Should().BeFalse();
}