Index: Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Create/MacroStabilityInwards/MacroStabilityInwardsSoilLayer1DCreateExtensionsTest.cs
===================================================================
diff -u -r31a621e36dfd14666d4ec7bb492b5eb5ea8a9265 -r25e0f6d008a17ea054a3658d82746b3a2e94f3c5
--- Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Create/MacroStabilityInwards/MacroStabilityInwardsSoilLayer1DCreateExtensionsTest.cs	(.../MacroStabilityInwardsSoilLayer1DCreateExtensionsTest.cs)	(revision 31a621e36dfd14666d4ec7bb492b5eb5ea8a9265)
+++ Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Create/MacroStabilityInwards/MacroStabilityInwardsSoilLayer1DCreateExtensionsTest.cs	(.../MacroStabilityInwardsSoilLayer1DCreateExtensionsTest.cs)	(revision 25e0f6d008a17ea054a3658d82746b3a2e94f3c5)
@@ -33,6 +33,17 @@
     public class MacroStabilityInwardsSoilLayer1DCreateExtensionsTest
     {
         [Test]
+        public void Create_SoilLayerNull_ThrowsArgumentNullException()
+        {
+            // Call
+            TestDelegate test = () => ((MacroStabilityInwardsSoilLayer1D) null).Create(0);
+
+            // Assert
+            string parameterName = Assert.Throws<ArgumentNullException>(test).ParamName;
+            Assert.AreEqual("soilLayer", parameterName);
+        }
+
+        [Test]
         public void Create_WithValidProperties_ReturnsEntityWithPropertiesSet()
         {
             // Setup