Index: Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/MicrostabilitySectionResultEntityReadExtensionsTest.cs
===================================================================
diff -u -re38a7c2baca2872af6319d535c6468133ea31fbc -r01782033c49f0510e5a622c161c14fa8e7a56138
--- Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/MicrostabilitySectionResultEntityReadExtensionsTest.cs	(.../MicrostabilitySectionResultEntityReadExtensionsTest.cs)	(revision e38a7c2baca2872af6319d535c6468133ea31fbc)
+++ Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Read/MicrostabilitySectionResultEntityReadExtensionsTest.cs	(.../MicrostabilitySectionResultEntityReadExtensionsTest.cs)	(revision 01782033c49f0510e5a622c161c14fa8e7a56138)
@@ -47,15 +47,14 @@
         }
 
         [Test]
-        [TestCase(AssessmentLayerOneState.NotAssessed, AssessmentLayerTwoAResult.Failed)]
-        [TestCase(AssessmentLayerOneState.NeedsDetailedAssessment, AssessmentLayerTwoAResult.Successful)]
-        [TestCase(AssessmentLayerOneState.Sufficient, AssessmentLayerTwoAResult.Failed)]
-        public void Read_WithDecimalParameterValues_ReturnMicrostabilitySectionResultWithDoubleParameterValues(
-            AssessmentLayerOneState layerOne, AssessmentLayerTwoAResult layerTwoA)
+        public void Read_ParameterValues_SectionResultWithParameterValues(
+            [Values(AssessmentLayerOneState.NotAssessed, AssessmentLayerOneState.NeedsDetailedAssessment,
+                AssessmentLayerOneState.Sufficient)] AssessmentLayerOneState layerOne,
+            [Values(AssessmentLayerTwoAResult.NotCalculated, AssessmentLayerTwoAResult.Failed,
+                AssessmentLayerTwoAResult.Successful)] AssessmentLayerTwoAResult layerTwoA,
+            [Values(0.1, 0.2, null)] double? layerThree)
         {
             // Setup
-            var random = new Random(21);
-            double layerThree = random.NextDouble();
             var collector = new ReadConversionCollector();
 
             var failureMechanismSectionEntity = new FailureMechanismSectionEntity();
@@ -76,33 +75,7 @@
             Assert.IsNotNull(sectionResult);
             Assert.AreEqual(layerOne, sectionResult.AssessmentLayerOne);
             Assert.AreEqual(layerTwoA, sectionResult.AssessmentLayerTwoA);
-            Assert.AreEqual(layerThree, sectionResult.AssessmentLayerThree, 1e-6);
+            Assert.AreEqual(layerThree ?? double.NaN, sectionResult.AssessmentLayerThree, 1e-6);
         }
-
-        [Test]
-        [TestCase(true, AssessmentLayerTwoAResult.Failed)]
-        [TestCase(false, AssessmentLayerTwoAResult.Successful)]
-        [TestCase(false, AssessmentLayerTwoAResult.Failed)]
-        public void Read_WithNullLayerThree_ReturnMicrostabilitySectionResultWithNullParameters(bool layerOne, AssessmentLayerTwoAResult layerTwoA)
-        {
-            // Setup
-            var collector = new ReadConversionCollector();
-            var failureMechanismSectionEntity = new FailureMechanismSectionEntity();
-            collector.Read(failureMechanismSectionEntity, new TestFailureMechanismSection());
-            var entity = new MicrostabilitySectionResultEntity
-            {
-                LayerOne = Convert.ToByte(layerOne),
-                LayerTwoA = Convert.ToByte(layerTwoA),
-                LayerThree = null,
-                FailureMechanismSectionEntity = failureMechanismSectionEntity
-            };
-            var sectionResult = new MicrostabilityFailureMechanismSectionResult(new TestFailureMechanismSection());
-
-            // Call
-            entity.Read(sectionResult);
-
-            // Assert
-            Assert.IsNaN(sectionResult.AssessmentLayerThree);
-        }
     }
 }
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