public void ForwardReadsPrev()
{
var lastPageCount = 10;
var prevPageCount = 3;
var logReader = new PageReaderData()
{
Id = Fixture.TestName,
Count = lastPageCount
};
long pageTop = (Fixture.LineCount - lastPageCount) * Fixture.TextLine(0).Length;
long pageBottom = PageReaderData.EOF;
Assert.True(Fixture.LineCount > lastPageCount, "Not enough lines to perform test.");
PageReader.ReadLast(logReader);
Assert.Equal(pageTop, logReader.PageTop);
Assert.Equal(pageBottom, logReader.PageBottom);
Assert.Equal(lastPageCount, logReader.Lines.Count());
pageBottom = pageTop;
pageTop = (Fixture.LineCount - lastPageCount - prevPageCount) * Fixture.TextLine(0).Length;
logReader.Count = prevPageCount;
PageReader.ReadPrev(logReader);
Assert.Equal(pageTop, logReader.PageTop);
Assert.Equal(pageBottom, logReader.PageBottom);
Assert.Equal(prevPageCount, logReader.Lines.Count());
for (var i = 0; i < prevPageCount; i++)
{
Assert.Equal(Fixture.Text(lastPageCount + prevPageCount + i), logReader.Lines.Skip(i).First());
}
}
