76 lines
3.0 KiB
C#
76 lines
3.0 KiB
C#
using DistTestCore.Codex;
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using NUnit.Framework;
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namespace DistTestCore.Helpers
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{
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public class PeerDownloadTestHelpers
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{
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private readonly DistTest test;
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public PeerDownloadTestHelpers(DistTest test)
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{
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this.test = test;
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}
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public void AssertFullDownloadInterconnectivity(IEnumerable<IOnlineCodexNode> nodes, ByteSize testFileSize)
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{
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test.Log($"Asserting full download interconnectivity for nodes: '{string.Join(",", nodes.Select(n => n.GetName()))}'...");
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var start = DateTime.UtcNow;
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foreach (var node in nodes)
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{
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var uploader = node;
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var downloaders = nodes.Where(n => n != uploader).ToArray();
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test.ScopedTestFiles(() =>
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{
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PerformTest(uploader, downloaders, testFileSize);
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});
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}
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test.Log($"Success! Full download interconnectivity for nodes: {string.Join(",", nodes.Select(n => n.GetName()))}");
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var timeTaken = DateTime.UtcNow - start;
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AssertTimePerMB(timeTaken, nodes.Count(), testFileSize);
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}
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private void AssertTimePerMB(TimeSpan timeTaken, int numberOfNodes, ByteSize size)
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{
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var numberOfDownloads = numberOfNodes * (numberOfNodes - 1);
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var timePerDownload = timeTaken / numberOfDownloads;
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float sizeInMB = size.ToMB();
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var timePerMB = timePerDownload / sizeInMB;
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test.Log($"Performed {numberOfDownloads} downloads of {size} in {timeTaken.TotalSeconds} seconds, for an average of {timePerMB.TotalSeconds} seconds per MB.");
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Assert.That(timePerMB, Is.LessThan(CodexContainerRecipe.MaxDownloadTimePerMegabyte), "MaxDownloadTimePerMegabyte performance threshold breached.");
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}
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private void PerformTest(IOnlineCodexNode uploader, IOnlineCodexNode[] downloaders, ByteSize testFileSize)
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{
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// Generate 1 test file per downloader.
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var files = downloaders.Select(d => GenerateTestFile(uploader, d, testFileSize)).ToArray();
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// Upload all the test files to the uploader.
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var contentIds = files.Select(uploader.UploadFile).ToArray();
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// Each downloader should retrieve its own test file.
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for (var i = 0; i < downloaders.Length; i++)
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{
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var expectedFile = files[i];
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var downloadedFile = downloaders[i].DownloadContent(contentIds[i], $"{expectedFile.Label}DOWNLOADED");
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expectedFile.AssertIsEqual(downloadedFile);
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}
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}
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private TestFile GenerateTestFile(IOnlineCodexNode uploader, IOnlineCodexNode downloader, ByteSize testFileSize)
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{
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var up = uploader.GetName().Replace("<", "").Replace(">", "");
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var down = downloader.GetName().Replace("<", "").Replace(">", "");
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var label = $"FROM{up}TO{down}";
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return test.GenerateTestFile(testFileSize, label);
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}
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}
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}
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