Index: Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Data.Test/GrassCoverErosionInwardsFailureMechanismSectionResultTest.cs
===================================================================
diff -u -rad479a80b6db7879b935aecaca743c39615ec977 -rb761c34a465fc6d203555b5a52839dd1681aad5a
--- Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Data.Test/GrassCoverErosionInwardsFailureMechanismSectionResultTest.cs	(.../GrassCoverErosionInwardsFailureMechanismSectionResultTest.cs)	(revision ad479a80b6db7879b935aecaca743c39615ec977)
+++ Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Data.Test/GrassCoverErosionInwardsFailureMechanismSectionResultTest.cs	(.../GrassCoverErosionInwardsFailureMechanismSectionResultTest.cs)	(revision b761c34a465fc6d203555b5a52839dd1681aad5a)
@@ -44,7 +44,7 @@
             Assert.IsInstanceOf<FailureMechanismSectionResult>(result);
             Assert.AreEqual(SimpleAssessmentResultValidityOnlyType.None, result.SimpleAssessmentResult);
             Assert.AreSame(section, result.Section);
-            Assert.IsNaN(result.AssessmentLayerThree);
+            Assert.IsNaN(result.TailorMadeAssessmentProbability);
         }
 
         [Test]
@@ -64,40 +64,43 @@
 
         [Test]
         [SetCulture("nl-NL")]
-        [TestCase(double.NegativeInfinity)]
-        [TestCase(double.PositiveInfinity)]
-        [TestCase(1.1)]
-        [TestCase(-0.1)]
-        public void AssessmentLayerThree_SetInvalidValue_ThrowsArgumentOutOfRangeException(double invalidValue)
+        [TestCase(-20)]
+        [TestCase(-1e-6)]
+        [TestCase(1 + 1e-6)]
+        [TestCase(12)]
+        public void TailorMadeAssessmentProbability_InvalidValue_ThrowsArgumentOutOfRangeException(double newValue)
         {
             // Setup
-            var sectionResult = new GrassCoverErosionInwardsFailureMechanismSectionResult(
-                FailureMechanismSectionTestFactory.CreateFailureMechanismSection());
+            FailureMechanismSection section = FailureMechanismSectionTestFactory.CreateFailureMechanismSection();
+            var result = new GrassCoverErosionInwardsFailureMechanismSectionResult(section);
 
             // Call
-            TestDelegate call = () => sectionResult.AssessmentLayerThree = invalidValue;
+            TestDelegate test = () => result.TailorMadeAssessmentProbability = newValue;
 
             // Assert
-            const string expectedMessage = "Kans moet in het bereik [0,0, 1,0] liggen.";
-            TestHelper.AssertThrowsArgumentExceptionAndTestMessage<ArgumentOutOfRangeException>(call, expectedMessage);
+            string message = Assert.Throws<ArgumentOutOfRangeException>(test).Message;
+            const string expectedMessage = "De waarde voor de faalkans moet in het bereik [0,0, 1,0] liggen.";
+            Assert.AreEqual(expectedMessage, message);
         }
 
         [Test]
-        [TestCase(double.NaN)]
         [TestCase(0)]
-        [TestCase(1)]
+        [TestCase(1e-6)]
         [TestCase(0.5)]
-        public void AssessmentLayerThree_SetValidValue_SetsValue(double validValue)
+        [TestCase(1 - 1e-6)]
+        [TestCase(1)]
+        [TestCase(double.NaN)]
+        public void TailorMadeAssessmentProbability_ValidValue_NewValueSet(double newValue)
         {
             // Setup
-            var sectionResult = new GrassCoverErosionInwardsFailureMechanismSectionResult(
-                FailureMechanismSectionTestFactory.CreateFailureMechanismSection());
+            FailureMechanismSection section = FailureMechanismSectionTestFactory.CreateFailureMechanismSection();
+            var result = new GrassCoverErosionInwardsFailureMechanismSectionResult(section);
 
             // Call
-            sectionResult.AssessmentLayerThree = validValue;
+            result.TailorMadeAssessmentProbability = newValue;
 
             // Assert
-            Assert.AreEqual(validValue, sectionResult.AssessmentLayerThree);
+            Assert.AreEqual(newValue, result.TailorMadeAssessmentProbability);
         }
     }
 }
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