public void TestValidateRuleThrowsException()
{
var vm = new TestViewModel();
vm.AllRules.Add(new KeyValuePair <string, IValidationRule>(
nameof(vm.Property),
new DelegateValidationRule <int>(x => throw new Exception("test exception"))
));
vm.AllRules.Add(new KeyValuePair <string, IValidationRule>(
nameof(vm.Property),
new DelegateValidationRule <int>(x => new ValidationRuleResult(true, "error"))
));
ValidationRuleResult[] results = ValidationUtilities.Validate(vm, nameof(vm.Property))
.ToArray();
Assert.AreEqual(2, results.Length);
// first rule throws an exception
Assert.AreEqual(true, results[0].IsError);
Assert.AreEqual("test exception", results[0].ErrorMessage);
// second rule yields a failed result
Assert.AreEqual(true, results[1].IsError);
Assert.AreEqual("error", results[1].ErrorMessage);
}
public void TestValidateReturnsOnlyErrors()
{
var vm = new TestViewModel();
vm.AllRules.Add(new KeyValuePair <string, IValidationRule>(
nameof(vm.Property),
new DelegateValidationRule <int>(x => new ValidationRuleResult(false, ""))
));
vm.AllRules.Add(new KeyValuePair <string, IValidationRule>(
nameof(vm.Property),
new DelegateValidationRule <int>(x => new ValidationRuleResult(true, "error"))
));
ValidationRuleResult[] results = ValidationUtilities.Validate(vm, nameof(vm.Property))
.ToArray();
Assert.AreEqual(1, results.Length);
Assert.AreEqual(true, results[0].IsError);
Assert.AreEqual("error", results[0].ErrorMessage);
}
public void TestValidateGetValueFailure()
{
var vm = new TestViewModel();
vm.GetterCache.Register(
nameof(vm.Property),
(vm) => throw new Exception("test")
);
vm.AllRules.Add(new KeyValuePair <string, IValidationRule>(
nameof(vm.Property),
new DelegateValidationRule <int>(x => new ValidationRuleResult(true, "error"))
));
ValidationRuleResult[] results = ValidationUtilities.Validate(vm, nameof(vm.Property))
.ToArray();
Assert.AreEqual(1, results.Length);
Assert.AreEqual(true, results[0].IsError);
Assert.AreEqual("test", results[0].ErrorMessage);
}