Add test to ensure "Batch" doesn't reuse internal array (#820)

morelinq · Jun 16, 2021 · cae4bcc · cae4bcc
1 parent ee23824
commit cae4bcc
Showing 1 changed file with 16 additions and 0 deletions.
diff --git a/MoreLinq.Test/BatchTest.cs b/MoreLinq.Test/BatchTest.cs
@@ -79,6 +79,22 @@ public void BatchSequenceYieldsListsOfBatches()
             reader.ReadEnd();
         }
 
+        [Test]
+        public void BatchSequencesAreIndependentInstances()
+        {
+            var result = new[] { 1, 2, 3, 4, 5, 6, 7, 8, 9 }.Batch(4);
+
+            using var reader = result.Read();
+            var first = reader.Read();
+            var second = reader.Read();
+            var third = reader.Read();
+            reader.ReadEnd();
+
+            first.AssertSequenceEqual(1, 2, 3, 4);
+            second.AssertSequenceEqual(5, 6, 7, 8);
+            third.AssertSequenceEqual(9);
+        }
+
         [Test]
         public void BatchIsLazy()
         {