Release Polish 2 (#2332)

API.Tests/Helpers/OrderableHelperTests.cs

@@ -0,0 +1,112 @@
+using System.Collections.Generic;
+using System.Linq;
+using API.Entities;
+using API.Helpers;
+using Xunit;
+
+namespace API.Tests.Helpers;
+
+public class OrderableHelperTests
+{
+    [Fact]
+    public void ReorderItems_ItemExists_SuccessfullyReorders()
+    {
+        // Arrange
+        var items = new List<AppUserSideNavStream>
+        {
+            new AppUserSideNavStream { Id = 1, Order = 0, Name = "A" },
+            new AppUserSideNavStream { Id = 2, Order = 1, Name = "A" },
+            new AppUserSideNavStream { Id = 3, Order = 2, Name = "A" },
+        };
+
+        // Act
+        OrderableHelper.ReorderItems(items, 2, 0);
+
+        // Assert
+        Assert.Equal(2, items[0].Id);  // Item 2 should be at position 0
+        Assert.Equal(1, items[1].Id);  // Item 1 should be at position 1
+        Assert.Equal(3, items[2].Id);  // Item 3 should remain at position 2
+    }
+
+    [Fact]
+    public void ReorderItems_ItemNotFound_NoChange()
+    {
+        // Arrange
+        var items = new List<AppUserSideNavStream>
+        {
+            new AppUserSideNavStream { Id = 1, Order = 0, Name = "A" },
+            new AppUserSideNavStream { Id = 2, Order = 1, Name = "A" },
+        };
+
+        // Act
+        OrderableHelper.ReorderItems(items, 3, 0);  // Item with Id 3 doesn't exist
+
+        // Assert
+        Assert.Equal(1, items[0].Id);  // Item 1 should remain at position 0
+        Assert.Equal(2, items[1].Id);  // Item 2 should remain at position 1
+    }
+
+    [Fact]
+    public void ReorderItems_InvalidPosition_NoChange()
+    {
+        // Arrange
+        var items = new List<AppUserSideNavStream>
+        {
+            new AppUserSideNavStream { Id = 1, Order = 0, Name = "A" },
+            new AppUserSideNavStream { Id = 2, Order = 1, Name = "A" },
+        };
+
+        // Act
+        OrderableHelper.ReorderItems(items, 2, 3);  // Position 3 is out of range
+
+        // Assert
+        Assert.Equal(1, items[0].Id);  // Item 1 should remain at position 0
+        Assert.Equal(2, items[1].Id);  // Item 2 should remain at position 1
+    }
+
+    [Fact]
+    public void ReorderItems_EmptyList_NoChange()
+    {
+        // Arrange
+        var items = new List<AppUserSideNavStream>();
+
+        // Act
+        OrderableHelper.ReorderItems(items, 2, 1);  // List is empty
+
+        // Assert
+        Assert.Empty(items);  // The list should remain empty
+    }
+
+    [Fact]
+    public void ReorderItems_DoubleMove()
+    {
+        // Arrange
+        var items = new List<AppUserSideNavStream>
+        {
+            new AppUserSideNavStream { Id = 1, Order = 0, Name = "0" },
+            new AppUserSideNavStream { Id = 2, Order = 1, Name = "1" },
+            new AppUserSideNavStream { Id = 3, Order = 2, Name = "2" },
+            new AppUserSideNavStream { Id = 4, Order = 3, Name = "3" },
+            new AppUserSideNavStream { Id = 5, Order = 4, Name = "4" },
+            new AppUserSideNavStream { Id = 6, Order = 5, Name = "5" },
+        };
+
+        // Move 4 -> 1
+        OrderableHelper.ReorderItems(items, 5, 1);
+
+        // Assert
+        Assert.Equal(1, items[0].Id);
+        Assert.Equal(0, items[0].Order);
+        Assert.Equal(5, items[1].Id);
+        Assert.Equal(1, items[1].Order);
+        Assert.Equal(2, items[2].Id);
+        Assert.Equal(2, items[2].Order);
+
+        // Ensure the items are in the correct order
+        Assert.Equal("041235", string.Join("", items.Select(s => s.Name)));
+
+        OrderableHelper.ReorderItems(items, items[4].Id, 1); // 3 -> 1
+
+        Assert.Equal("034125", string.Join("", items.Select(s => s.Name)));
+    }
+}