Add tests for TorrentAddDtoExtensions

src/Tests/TransmissionManager.Database.Tests/TorrentAddDtoExtensionsTests.cs

@@ -0,0 +1,41 @@
+using TransmissionManager.Database.Dto;
+using TransmissionManager.Database.Extensions;
+
+namespace TransmissionManager.Database.Tests;
+
+[Parallelizable(ParallelScope.All)]
+internal sealed class TorrentAddDtoExtensionsTests
+{
+    [Test]
+    public void ToTorrent_WhenGivenValidDto_ReturnsTorrentWithPropertiesCorrectlyMapped()
+    {
+        var dto = new TorrentAddDto(
+            hashString: "ABCDEF0123456789ABCDEF0123456789ABCDEF01",
+            name: "Test name",
+            webPageUri: new("https://torrenttracker.com/forum/viewtopic.php?t=1234570"),
+            downloadDir: "/tvshows",
+            magnetRegexPattern: @"magnet:\?xt=[^""]*",
+            cron: "0 9,17 * * *");
+
+        var torrent = dto.ToTorrent();
+
+        Assert.That(torrent, Is.Not.Null);
+        Assert.Multiple(() =>
+        {
+            Assert.That(torrent.Id, Is.Zero);
+            Assert.That(torrent.HashString, Is.EqualTo(dto.HashString));
+            Assert.That(torrent.Name, Is.EqualTo(dto.Name));
+            Assert.That(torrent.WebPageUri, Is.EqualTo(dto.WebPageUri));
+            Assert.That(torrent.DownloadDir, Is.EqualTo(dto.DownloadDir));
+            Assert.That(torrent.MagnetRegexPattern, Is.EqualTo(dto.MagnetRegexPattern));
+            Assert.That(torrent.Cron, Is.EqualTo(dto.Cron));
+        });
+    }
+
+    [Test]
+    public void ToTorrent_WhenGivenNull_ThrowsArgumentNullException()
+    {
+        TorrentAddDto dto = null!;
+        Assert.That(dto.ToTorrent, Throws.ArgumentNullException);
+    }
+}