public void TestInvalidate()
{
var strat = new CachedValidation();
var vm = new TestViewModel();
int callCount = 0;
vm.AllRules.Add(new KeyValuePair <string, IValidationRule>(
nameof(TestViewModel.TestProperty),
new DelegateValidationRule <int>(x =>
{
callCount++;
return(new ValidationRuleResult(true, "error"));
})
));
ValidationRuleResult[] r1 = strat.Validate(vm, nameof(TestViewModel.TestProperty)).ToArray();
strat.Invalidate(nameof(TestViewModel.TestProperty));
ValidationRuleResult[] r2 = strat.Validate(vm, nameof(TestViewModel.TestProperty)).ToArray();
// assert that the rule was run once for each call
Assert.AreEqual(2, callCount);
// assert that the first run returned the expected results.
Assert.AreEqual(1, r1.Length);
Assert.AreEqual(true, r1[0].IsError);
Assert.AreEqual("error", r1[0].ErrorMessage);
// assert that the second run returned the expected results.
Assert.AreEqual(1, r2.Length);
Assert.AreEqual(true, r2[0].IsError);
Assert.AreEqual("error", r2[0].ErrorMessage);
}
public void TestInvalidateNames(string propertyName)
{
var strat = new CachedValidation();
// "assert" that this does not throw
strat.Invalidate(propertyName);
}