public void CheckRuleYieldsViolation()
{
BusinessRule target = new RuleThatAlwaysHasOneViolation();
IEnumerable <BusinessRuleViolation> result = target.CheckRule();
Assert.AreEqual(1, result.Count());
Assert.IsTrue(result.Any(v => v.ViolationMessage == "Always one violation"));
}
public void AndOperator_CombinesRules_ViolationAreNotDistinct()
{
BusinessRule rule1 = new RuleThatAlwaysHasOneViolation();
BusinessRule rule2 = new RuleThatAlwaysHasOneViolation();
BusinessRule result = rule1 & rule2;
IEnumerable <BusinessRuleViolation> violations = result.CheckRule();
Assert.AreEqual(2, violations.Count());
Assert.IsTrue(violations.All(v => v.ViolationMessage == "Always one violation"));
}
public void AndOperator_CombinesRules_AndResultsInViolationListThatIncludeBoth()
{
BusinessRule rule1 = new RuleThatAlwaysHasOneViolation();
BusinessRule rule2 = new RuleThatAlwaysHasTwoViolations();
BusinessRule result = rule1 & rule2;
IEnumerable <BusinessRuleViolation> violations = result.CheckRule();
Assert.AreEqual(3, violations.Count());
Assert.IsTrue(violations.Any(v => v.ViolationMessage == "Always one violation"));
Assert.IsTrue(violations.Any(v => v.ViolationMessage == "First violation"));
Assert.IsTrue(violations.Any(v => v.ViolationMessage == "Second violation"));
}
public void StaticThrowIfNotSatisfiedThrowsBusinessRuleViolationException()
{
BusinessRule target = new RuleThatAlwaysHasOneViolation();
Action act = () =>
{
BusinessRule.ThrowIfNotSatisfied(target);
};
var ex = Assert.ThrowsException <BusinessRuleViolationException>(act);
Assert.AreEqual("Rule Violations: 1 violations have been detected.", ex.Message);
Assert.AreEqual(1, ex.Violations.Count());
Assert.IsTrue(ex.Violations.Any(v => v.ViolationMessage == "Always one violation"));
}