Addressed pr comments

tests/Blazor.Diagrams.Core.Tests/Models/NodeModelTest.cs

@@ -0,0 +1,66 @@
+using Blazor.Diagrams.Core.Geometry;
+using Blazor.Diagrams.Core.Models;
+using Xunit;
+
+namespace Blazor.Diagrams.Core.Tests.Models
+{
+    public class NodeModelTest
+    {
+        [Theory]
+        [InlineData(PortAlignment.Top)]
+        [InlineData(PortAlignment.TopLeft)]
+        [InlineData(PortAlignment.TopRight)]
+        [InlineData(PortAlignment.Bottom)]
+        [InlineData(PortAlignment.BottomLeft)]
+        [InlineData(PortAlignment.BottomRight)]
+        [InlineData(PortAlignment.Left)]
+        [InlineData(PortAlignment.Right)]
+        public void UpdatePortOnSetPosition(PortAlignment alignment)
+        {
+            //Arrange
+            var diagram = new TestDiagram();
+            diagram.SetContainer(new Rectangle(0, 0, 1000, 400));
+            var node = new NodeModel(position: new Point(100, 100));
+            node.Size = new Size(100, 100);
+
+            var port = node.AddPort(alignment);
+
+            var newX = 200;
+            var newY = 300;
+
+            //Act
+            node.SetPosition(newX, newY);
+
+            //Assert
+            Assert.Equal(200, port.Position.X);
+            Assert.Equal(300, port.Position.Y);
+        }
+
+        [Theory]
+        [InlineData(PortAlignment.Top, 300, 100)]
+        [InlineData(PortAlignment.TopLeft, 100, 100)]
+        [InlineData(PortAlignment.TopRight, 500, 100)]
+        [InlineData(PortAlignment.Bottom, 300, 700)]
+        [InlineData(PortAlignment.BottomLeft, 100, 700)]
+        [InlineData(PortAlignment.BottomRight, 500, 700)]
+        [InlineData(PortAlignment.Left, 100, 400)]
+        [InlineData(PortAlignment.Right, 500, 400)]
+        public void UpdatePortOnSetSize(PortAlignment alignment, double expectedX, double expectedY)
+        {
+            // Arrange
+            var oldWidth = 100.0;
+            var oldHeight = 100.0;
+            var newWidth = 500.0;
+            var newHeight = 700.0;
+            var node = new NodeModel(new Point(100, 100)) { Size = new Size(oldWidth, oldHeight) };
+            var port = node.AddPort(alignment);
+
+            // Act
+            node.SetSize(newWidth, newHeight);
+
+            // Assert
+            Assert.Equal(expectedX, port.Position.X);
+            Assert.Equal(expectedY, port.Position.Y);
+        }
+    }
+}