Allowed moving local data sources without embedding them again (#1091)

Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>

app/Tests/Tools/FileSourceIndexerWatcherTests.cs

@@ -35,6 +35,15 @@ public sealed class FileSourceIndexerWatcherTests
             Is.False);
     }
 
+    [Test]
+    public void SingleFileWatcherIgnoresAnotherCaseDistinctFileOnUnix()
+    {
+        var configuration = new FileSourceIndexer.DataSourceWatcherConfiguration(Path.GetTempPath(), false, TargetFileName: "Report.md");
+
+        Assert.That(FileSourceIndexer.IsRelevantWatcherPath(configuration, Path.Combine(Path.GetTempPath(), "report.md"), WatcherChangeTypes.Changed),
+            Is.EqualTo(OperatingSystem.IsWindows()));
+    }
+
     [Test]
     public void SingleFileWatcherRecognizesARenameAwayFromTheConfiguredFile()
     {
@@ -262,6 +271,15 @@ public sealed class FileSourceIndexerWatcherTests
         Assert.That(FileSourceIndexer.IsSameWatchConfiguration(before, after), Is.False);
     }
 
+    [Test]
+    public void RelocatingToADirectoryWithDifferentCasingUsesTheLocalPathRules()
+    {
+        var before = DefaultConfiguration(Path.Combine(Path.GetTempPath(), "Documents"));
+        var after = before with { RootPath = Path.Combine(Path.GetTempPath(), "documents") };
+
+        Assert.That(FileSourceIndexer.IsSameWatchConfiguration(before, after), Is.EqualTo(OperatingSystem.IsWindows()), "On Unix these can be different directories; their watchers must not be treated as interchangeable.");
+    }
+
     [Test]
     public async Task DirectoryWatcherIgnoresTheBatchTranscriptWhenTheMediaIsSelected()
     {