public void Finished()
{
"分配两段，在全部下载完成之后，那么下载完成".Test(() =>
{
const long fileLength = 1000;
var segmentManager = new SegmentManager(fileLength);
var firstDownloadSegment = segmentManager.GetNewDownloadSegment();
var secondDownloadSegment = segmentManager.GetNewDownloadSegment();
secondDownloadSegment.DownloadedLength = fileLength / 2;
firstDownloadSegment.DownloadedLength = fileLength / 2;
Assert.AreEqual(true, segmentManager.IsFinished());
});
"只分配一段，在一段没有完成，那么下载没有完成".Test(() =>
{
const long fileLength = 1000;
var segmentManager = new SegmentManager(fileLength);
var firstDownloadSegment = segmentManager.GetNewDownloadSegment();
Assert.AreEqual(fileLength, firstDownloadSegment.RequirementDownloadPoint);
firstDownloadSegment.DownloadedLength = fileLength / 2;
Assert.AreEqual(false, segmentManager.IsFinished());
});
"只分配一段，在一段下载完成之后，那么下载完成".Test(() =>
{
const long fileLength = 1000;
var segmentManager = new SegmentManager(fileLength);
var firstDownloadSegment = segmentManager.GetNewDownloadSegment();
Assert.AreEqual(fileLength, firstDownloadSegment.RequirementDownloadPoint);
firstDownloadSegment.DownloadedLength = fileLength;
Assert.AreEqual(true, segmentManager.IsFinished());
});
}
public void GetNewDownloadSegment()
{
"在获取第二段的时候，如第一段有下载内容，会在下载内容点之后继续第二段".Test(() =>
{
const long fileLength = 1000;
var segmentManager = new SegmentManager(fileLength);
var firstDownloadSegment = segmentManager.GetNewDownloadSegment();
Assert.AreEqual(fileLength, firstDownloadSegment.RequirementDownloadPoint);
const long downloadLength = 100;
firstDownloadSegment.DownloadedLength = downloadLength;
var secondDownloadSegment = segmentManager.GetNewDownloadSegment();
Assert.AreEqual(0, firstDownloadSegment.StartPoint);
Assert.AreEqual(fileLength / 2 + downloadLength / 2, firstDownloadSegment.RequirementDownloadPoint);
Assert.AreEqual(fileLength / 2 + downloadLength / 2, secondDownloadSegment.StartPoint);
Assert.AreEqual(fileLength, secondDownloadSegment.RequirementDownloadPoint);
});
"多次获取将会不断分段，所有分段合起来是文件大小".Test(() =>
{
const long fileLength = 1000;
var segmentManager = new SegmentManager(fileLength);
var downloadSegmentList = new List <DownloadSegment>();
for (int i = 0; i < 100; i++)
{
DownloadSegment downloadSegment = segmentManager.GetNewDownloadSegment();
downloadSegmentList.Add(downloadSegment);
}
var length = downloadSegmentList.Select(temp => temp.RequirementDownloadPoint - temp.StartPoint).Sum();
Assert.AreEqual(fileLength, length);
});
"在获取第三段的时候，可以获取第一段和第二段的中间".Test(() =>
{
const long fileLength = 1000;
var segmentManager = new SegmentManager(fileLength);
var firstDownloadSegment = segmentManager.GetNewDownloadSegment();
Assert.AreEqual(fileLength, firstDownloadSegment.RequirementDownloadPoint);
var secondDownloadSegment = segmentManager.GetNewDownloadSegment();
var thirdDownloadSegment = segmentManager.GetNewDownloadSegment();
Assert.AreEqual(250, thirdDownloadSegment.StartPoint);
});
"在获取第二段的时候，将修改第一段需要下载的长度，同时第二段从中间开始".Test(() =>
{
const long fileLength = 1000;
var segmentManager = new SegmentManager(fileLength);
var firstDownloadSegment = segmentManager.GetNewDownloadSegment();
Assert.AreEqual(fileLength, firstDownloadSegment.RequirementDownloadPoint);
var secondDownloadSegment = segmentManager.GetNewDownloadSegment();
Assert.AreEqual(0, firstDownloadSegment.StartPoint);
Assert.AreEqual(fileLength / 2, firstDownloadSegment.RequirementDownloadPoint);
Assert.AreEqual(fileLength / 2, secondDownloadSegment.StartPoint);
Assert.AreEqual(fileLength, secondDownloadSegment.RequirementDownloadPoint);
});
"第一段下载内容的长度是文件的长度".Test(() =>
{
const long fileLength = 1000;
var segmentManager = new SegmentManager(fileLength);
var downloadSegment = segmentManager.GetNewDownloadSegment();
Assert.AreEqual(fileLength, downloadSegment.RequirementDownloadPoint);
});
"默认第一段下载内容是从零开始".Test(() =>
{
const long fileLength = 1000;
var segmentManager = new SegmentManager(fileLength);
var downloadSegment = segmentManager.GetNewDownloadSegment();
Assert.AreEqual(0, downloadSegment.StartPoint);
});
}
