test(striped backups): check count via Distinct()

Author: AdityaNPL

tests/AgDatabaseMove.Unit/BackupOrder.cs

@@ -111,11 +111,20 @@ public static List<BackupMetadata> GetBackupListWithStripes()
     {
       var list = GetBackupList();
       var listWithStripes = CloneBackupMetaDataList(list).ToList();
+      var listWithStripes2 = CloneBackupMetaDataList(list).ToList();
+
       listWithStripes.ForEach(b => {
         var path = b.PhysicalDeviceName.Split('.');
         b.PhysicalDeviceName = $"{path[0]}_striped.{path[1]}";
       });
+
+      listWithStripes2.ForEach(b => {
+        var path = b.PhysicalDeviceName.Split('.');
+        b.PhysicalDeviceName = $"{path[0]}_striped2.{path[1]}";
+      });
+
       list.AddRange(listWithStripes);
+      list.AddRange(listWithStripes2);
       return list;
     }
 

tests/AgDatabaseMove.Unit/StripedBackupSetTests.cs

@@ -16,9 +16,10 @@ public class StripedBackupSetTests
     public void CombinesStripedBackups()
     {
       var backupChain = BackupOrder.GetBackupListWithStripes();
+
       var stripedBackupSetChain = StripedBackupSet.GetStripedBackupSetChain(backupChain);
 
-      Assert.Equal(backupChain.Count/2, stripedBackupSetChain.Count());
+      Assert.Equal(backupChain.Distinct(stripedBackupComparer).Count(), stripedBackupSetChain.Count());
     }
 
     [Fact]
@@ -34,6 +35,8 @@ public void DoesntCombineNonStripedBackups()
     public void StripedBackupsAreEqualExceptForPhysicalDeviceName()
     {
       var backupChain = BackupOrder.GetBackupListWithStripes();
+    
+
       var stripedBackupSetChain = StripedBackupSet.GetStripedBackupSetChain(backupChain);
 
       foreach (var stripedBackupSet in stripedBackupSetChain)