Index: Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Create/MacroStabilityInwards/MacroStabilityInwardsOutputCreateExtensionsTest.cs
===================================================================
diff -u -rde4ebfc961abbbcd502b9932f52c21e315a631c3 -r3b2cfa62b4a0df5c5577395b7cbef40de1d7f2f9
--- Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Create/MacroStabilityInwards/MacroStabilityInwardsOutputCreateExtensionsTest.cs	(.../MacroStabilityInwardsOutputCreateExtensionsTest.cs)	(revision de4ebfc961abbbcd502b9932f52c21e315a631c3)
+++ Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Create/MacroStabilityInwards/MacroStabilityInwardsOutputCreateExtensionsTest.cs	(.../MacroStabilityInwardsOutputCreateExtensionsTest.cs)	(revision 3b2cfa62b4a0df5c5577395b7cbef40de1d7f2f9)
@@ -24,6 +24,7 @@
 using Application.Ringtoets.Storage.Create.MacroStabilityInwards;
 using Application.Ringtoets.Storage.DbContext;
 using Application.Ringtoets.Storage.TestUtil.MacroStabilityInwards;
+using Core.Common.Base.Data;
 using Core.Common.Base.Geometry;
 using Core.Common.TestUtil;
 using NUnit.Framework;
@@ -47,7 +48,7 @@
         }
 
         [Test]
-        public void Create_WithValidValues_ReturnsPropertyWithExpectedPropertiesSet()
+        public void Create_WithValidValues_ReturnsEntityWithExpectedPropertiesSet()
         {
             // Setup
             var random = new Random(21);
@@ -100,8 +101,8 @@
                                                                      double.NaN,
                                                                      double.NaN);
 
-            var slipPlane = new MacroStabilityInwardsSlipPlaneUpliftVan(new MacroStabilityInwardsGrid(),
-                                                                        new MacroStabilityInwardsGrid(),
+            var slipPlane = new MacroStabilityInwardsSlipPlaneUpliftVan(CreateGridWithNaNValues(),
+                                                                        CreateGridWithNaNValues(),
                                                                         new double[0]);
 
             var output = new MacroStabilityInwardsOutput(slidingCurve, slipPlane, new MacroStabilityInwardsOutput.ConstructionProperties());
@@ -162,6 +163,17 @@
             };
         }
 
+        private static MacroStabilityInwardsGrid CreateGridWithNaNValues()
+        {
+            return new MacroStabilityInwardsGrid
+            {
+                XLeft = RoundedDouble.NaN,
+                XRight = RoundedDouble.NaN,
+                ZTop = RoundedDouble.NaN,
+                ZBottom = RoundedDouble.NaN
+            };
+        }
+
         #endregion
 
         #region Sliding Curve Helpers