TESTS

QWERTYkez.Mensura.Tests/CollectionsPow3ExtensionsTest.cs

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+namespace QWERTYkez.Mensura.Tests;
+
+public class CollectionsPow3ExtensionsTest
+{
+    [Fact]
+    public void Pow3_Array_CalculatesCorrectly()
+    {
+        // Arrange: 2^3=8, 3^3=27, 4^3=64
+        Length[] source = [new(2), new(3), new(4)];
+
+        // Act
+        Length[] result = source.Pow3<Length, Length>();
+
+        // Assert
+        Assert.Equal(8, result[0]._Value);
+        Assert.Equal(27, result[1]._Value);
+        Assert.Equal(64, result[2]._Value);
+    }
+
+    [Fact]
+    public void Pow3_NullableArray_HandlesNulls()
+    {
+        // Arrange
+        Length?[] source = [new(5), null, new(10)];
+
+        // Act
+        Length?[] result = source.Pow3<Length, Length>();
+
+        // Assert
+        Assert.Equal(125, result[0]?._Value);
+        Assert.Null(result[1]);
+        Assert.Equal(1000, result[2]?._Value);
+    }
+
+    [Fact]
+    public void Pow3_List_ReturnsCorrectResult()
+    {
+        // Arrange
+        var source = new List<Length> { new(2), new(5) };
+
+        // Act
+        var result = source.Pow3<Length, Length>();
+
+        // Assert
+        Assert.Equal(8, result[0]._Value);
+        Assert.Equal(125, result[1]._Value);
+    }
+
+    [Fact]
+    public void Pow3_DestinationTooShort_ThrowsArgumentException()
+    {
+        // Arrange
+        Length[] source = [new(2), new(3)];
+        Length[] dest = new Length[1];
+
+        // Act & Assert
+        Assert.Throws<ArgumentException>(() => source.Pow3(dest));
+    }
+}