Added a sliding window extension for IEnumerable

2026-01-30 21:55:40 +01:00
parent 554ab0557e
commit 5e3bb81140
2 changed files with 55 additions and 2 deletions
@@ -102,4 +102,44 @@ public class EnumerableExtensionsTest

        Assert.Equal([[1, 2], [1, 3], [2, 1], [2, 3], [3, 1], [3, 2]], actual);
    }
+    
+    [Fact]
+    public void SlidingWindowOver_none_1_equals_none()
+    {
+        int[] data = [];
+        
+        var actual = data.SlidingWindow(1).ToArray();
+        
+        Assert.Equal([], actual);
+    }
+    
+    [Fact]
+    public void SlidingWindowOver_1_1_equals_1()
+    {
+        int[] data = [1];
+        
+        var actual = data.SlidingWindow(1).ToArray();
+        
+        Assert.Equal([[1]], actual);
+    }
+    
+    [Fact]
+    public void SlidingWindowOver_1234_2_equals_1_12_23_34()
+    {
+        int[] data = [1, 2, 3, 4];
+        
+        var actual = data.SlidingWindow(2).ToArray();
+        
+        Assert.Equal([[1], [1, 2], [2, 3], [3, 4]], actual);
+    }
+    
+    [Fact]
+    public void SlidingWindowOver_1234_3_equals_1_12_123_234()
+    {
+        int[] data = [1, 2, 3, 4];
+        
+        var actual = data.SlidingWindow(3).ToArray();
+        
+        Assert.Equal([[1], [1, 2], [1, 2, 3], [2, 3, 4]], actual);
+    }
 }