public void TestPropertyChangeFiresErrorsChanged()
{
var rule = new TestValidationRule
{
Result = ValidationRuleResult.Success,
};
var vm = new TestViewModel
{
AProperty = 5,
};
vm.AddValidationRule(nameof(TestViewModel.AProperty), rule);
List <string> errorChanges =
CaptureErrorChanges(vm, () =>
{
vm.PublicRaisePropertyChanged(nameof(vm.AProperty));
});
CollectionAssert.AreEqual(
new[] { nameof(TestViewModel.AProperty), string.Empty },
errorChanges
);
}
public void TestHasErrorsTrue()
{
var rule = new TestValidationRule
{
Result = new ValidationRuleResult(true, "test"),
};
var vm = new TestViewModel
{
AProperty = 5,
};
vm.AddValidationRule(nameof(TestViewModel.AProperty), rule);
Assert.IsTrue(vm.HasErrors);
}
public void TestHasErrorsFalse()
{
var rule = new TestValidationRule
{
Result = ValidationRuleResult.Success,
};
var vm = new TestViewModel
{
AProperty = 5,
};
vm.AddValidationRule(nameof(TestViewModel.AProperty), rule);
Assert.IsFalse(vm.HasErrors);
}
public void TestExplicitGetErrors()
{
var vm = new TestViewModel();
vm.AddValidationRule <int>(nameof(vm.AProperty), x => new ValidationRuleResult(true, "error"));
INotifyDataErrorInfo indei = vm;
object[] indeiErrors = indei
.GetErrors(nameof(vm.AProperty))
.Cast <object>()
.ToArray();
string[] errors = vm.GetErrors(nameof(vm.AProperty)).ToArray();
CollectionAssert.AreEqual(errors, indeiErrors);
}
public void TestPropertyChangeFiresErrorsChangedAndDoesNotThrowWithNoSubscribers()
{
var rule = new TestValidationRule
{
Result = ValidationRuleResult.Success,
};
var vm = new TestViewModel
{
AProperty = 5,
};
vm.AddValidationRule(nameof(TestViewModel.AProperty), rule);
// this line should not throw any exceptions.
vm.PublicRaisePropertyChanged(nameof(vm.AProperty));
}
public void TestValidateEntityUsingNullAndEmptyStringWithSuccess()
{
var rule = new TestValidationRule
{
Result = new ValidationRuleResult(false, "test"),
};
var vm = new TestViewModel
{
AProperty = 5,
};
vm.AddValidationRule(null, rule);
string[] errors = vm.GetErrors(string.Empty).ToArray();
CollectionAssert.AreEqual(Array.Empty <string>(), errors);
}
public void TestValidateEntityUsingEmptyAndNullStringWithError()
{
var rule = new TestValidationRule
{
Result = new ValidationRuleResult(true, "test"),
};
var vm = new TestViewModel
{
AProperty = 5,
};
vm.AddValidationRule(string.Empty, rule);
string[] errors = vm.GetErrors(null).ToArray();
CollectionAssert.AreEqual(new string[] { "test" }, errors);
}
public void TestAddEntityValidationRuleByDelegate()
{
var vm = new TestViewModel
{
AProperty = 5,
};
int runCount = 0;
vm.AddValidationRule <TestViewModel>(null, (testVM) =>
{
runCount++;
return(new ValidationRuleResult(true, "test"));
});
string[] errors = vm.GetErrors(null).ToArray();
Assert.AreEqual(1, runCount);
CollectionAssert.AreEqual(new[] { "test" }, errors);
}
public void TestValidatePropertyWithSuccess()
{
var rule = new TestValidationRule
{
Result = new ValidationRuleResult(false, "test"),
};
var vm = new TestViewModel
{
AProperty = 5,
};
vm.AddValidationRule(nameof(TestViewModel.AProperty), rule);
string[] errors = vm.GetErrors(nameof(TestViewModel.AProperty)).ToArray();
Assert.AreEqual(1, rule.RunCount);
Assert.AreEqual(5, rule.LastRunValue);
CollectionAssert.AreEqual(Array.Empty <string>(), errors);
}
public void TestPropertyChangedNullNameConvertedToEmpty()
{
var rule = new TestValidationRule
{
Result = ValidationRuleResult.Success,
};
var vm = new TestViewModel();
vm.AddValidationRule(null, rule);
List <string> errorChanges = CaptureErrorChanges(vm, () =>
{
vm.PublicRaisePropertyChanged(null);
});
CollectionAssert.AreEqual(
new[] { string.Empty },
errorChanges
);
}
public void TestRemoveEntityValidationRule()
{
var rule = new TestValidationRule
{
Result = new ValidationRuleResult(true, "test"),
};
var vm = new TestViewModel
{
AProperty = 5,
};
vm.AddValidationRule(null, rule);
vm.RemoveValidationRule(null, rule);
string[] errors = vm.GetErrors(null).ToArray();
Assert.AreEqual(0, rule.RunCount);
CollectionAssert.AreEqual(Array.Empty <string>(), errors);
}