public void Enumerable_ShouldMark_TooLarge_SourceItems()
{
// Arrange
const long maxSize = 1000;
var source = new[]
{
new Attachment("A").WithLength(0),
new Attachment("B").WithLength(maxSize - 1),
new Attachment("C").WithLength(maxSize),
new Attachment("D").WithLength(maxSize + 1),
new Attachment("E").WithLength(long.MaxValue),
new Attachment("F").WithLength(-1),
};
var expected = new[]
{
new Attachment("D"),
new Attachment("E")
};
var filter = new TooLargeAttachmentFilter(maxSize, source);
// Act
var result = filter.ToList();
// Assert
result.TooLarge().Should().BeEquivalentTo(expected);
}
public void Enumerable_ShouldBe_Empty_WhenSource_IsEmpty()
{
// Arrange
var source = Enumerable.Empty <Attachment>();
var filter = new TooLargeAttachmentFilter(234, source);
// Act
var result = filter.ToList();
// Assert
result.Should().BeEmpty();
}
public void Enumerable_ShouldKeep_SourceItems_WithError()
{
// Arrange
const long maxSize = 3753;
var source = new[]
{
new Attachment("B").WithLength(maxSize).WithError(AttachmentErrorType.FileReadError),
new Attachment("C").WithLength(maxSize + 1).WithError(AttachmentErrorType.TooManyFiles),
};
var filter = new TooLargeAttachmentFilter(maxSize, source);
// Act
var result = filter.ToList();
// Assert
result
.WithError()
.Where(i => i.ErrorType != AttachmentErrorType.FileTooLarge)
.Should().BeEquivalentTo(source);
}