public void Error_WhenValid_ReturnsEmptyString()
{
// arrange
var vm = new FakeScreenViewModel();
vm.Validator = new ValidWhenPropertyOneIsGreaterThan100Validator();
vm.PropertyOne = 101;
// action
vm.Validate();
// assert
Assert.IsTrue(string.IsNullOrWhiteSpace(vm.Error));
}
public void Indexer_WhenNotValid_ReturnsPropertyErrorMessage()
{
// arrange
var vm = new FakeScreenViewModel();
vm.Validator = new ValidWhenPropertyOneIsGreaterThan100Validator();
vm.PropertyOne = 99;
// action
vm.Validate();
// assert
Assert.IsFalse(string.IsNullOrWhiteSpace(vm["PropertyOne"]));
}
public void Validate_WhenValid_ReturnsTrue()
{
// arrange
var vm = new FakeScreenViewModel();
vm.Validator = new ValidWhenPropertyOneIsGreaterThan100Validator();
vm.PropertyOne = 101;
// action
var result = vm.Validate();
// assert
Assert.IsTrue(result);
}