public SomeModel()
{
Count = NotifyChange.Of(() => _count, x => _count = x);
Message = NotifyChange.Of <string>();
DetailedMessage = NotifyChange.Select(() => Message + "-" + Count, Message, Count);
}
public void Given_that_no_validation_condition_was_specified_Then_Error_propetry_should_return_null()
{
// Arrange
var count = NotifyChange.Of(0);
// Act
// Assert
count.Error.Should().BeNull();
}
public void Given_some_invalid_NC_When_I_validate_it_without_error_message_Then_it_should_set_NC_Error_property_to_default_error_message()
{
// Arrange
var counter = NotifyChange.Of(-1);
// Act
counter = counter.ValidIf(i => i > 0);
// Assert
counter.Error.Should().Be(NotifyChange.Defaults.InvalidError);
}
public void Given_some_invalid_NC_When_I_validate_it_with_error_message_Then_it_should_set_NC_indexer_should_return_the_same_message_as_Error()
{
// Arrange
var counter = NotifyChange.Of(-1);
// Act
counter = counter.ValidIf(i => i > 0, "Should be positive");
// Assert
counter["hey"].Should().Be(counter.Error);
}
public void Given_some_invalid_NC_When_I_validate_it_with_error_message_Then_it_should_set_NC_Error_property_to_specified_message()
{
// Arrange
var counter = NotifyChange.Of(-1);
// Act
counter = counter.ValidIf(i => i > 0, "Should be positive");
// Assert
counter.Error.Should().Be("Should be positive");
}
public void Given_null_value_When_I_convert_wrapper_to_string_Then_it_should_not_raise_exception()
{
// Arrange
var obj = NotifyChange.Of <object>(null);
// Act
// Assert
var x = string.Empty;
Assert.DoesNotThrow(() => x = obj.ToString());
x.Should().Be("Value: Null");
}
public void Given_valid_source_NC_and_another_NC_with_source_Error_property_When_I_assign_invalid_value_to_source_Then_Error_PC_should_be_raised()
{
// Arrange
var counter = NotifyChange.Of(1).ValidIf(x => x > 0);
var validationError = counter.GetNotifyChangeOfProperty(x => x.Error);
var raised = false;
validationError.PropertyChanged += (sender, args) => raised = true;
// Act
counter.Value = -1;
// Assert
raised.Should().BeTrue();
}