Index: DamEngine/trunk/src/Deltares.DamEngine.Interface.Tests/ConversionHelperTests.cs
===================================================================
diff -u -r1573 -r1589
--- DamEngine/trunk/src/Deltares.DamEngine.Interface.Tests/ConversionHelperTests.cs	(.../ConversionHelperTests.cs)	(revision 1573)
+++ DamEngine/trunk/src/Deltares.DamEngine.Interface.Tests/ConversionHelperTests.cs	(.../ConversionHelperTests.cs)	(revision 1589)
@@ -538,6 +538,26 @@
         }
 
         [Test]
+        [TestCase(PipingModelType.Bligh, InputPipingModelType.Bligh)]
+        [TestCase(PipingModelType.SellmeijerVnk, InputPipingModelType.SellmeijerVnk)]
+        [TestCase(PipingModelType.Sellmeijer4Forces, InputPipingModelType.Sellmeijer4Forces)]
+        [TestCase(PipingModelType.Wti2017, InputPipingModelType.WbiSellmeijerRevised)]
+        public void CanConvertToInputPipingModelType(PipingModelType pipingModelType, InputPipingModelType outputPipingModelType)
+        {
+            Assert.AreEqual(outputPipingModelType, ConversionHelper.ConvertToInputPipingModelType(pipingModelType));
+        }
+
+        [Test]
+        [TestCase(InputPipingModelType.Bligh, PipingModelType.Bligh)]
+        [TestCase(InputPipingModelType.SellmeijerVnk, PipingModelType.SellmeijerVnk)]
+        [TestCase(InputPipingModelType.Sellmeijer4Forces, PipingModelType.Sellmeijer4Forces)]
+        [TestCase(InputPipingModelType.WbiSellmeijerRevised, PipingModelType.Wti2017)]
+        public void CanConvertToPipingModelType(InputPipingModelType outputPipingModelType, PipingModelType pipingModelType)
+        {
+            Assert.AreEqual(pipingModelType, ConversionHelper.ConvertToPipingModelType(outputPipingModelType));
+        }
+
+        [Test]
         [TestCase(RegionalResultType.ProbabilityOfFailure, 0)]
         [TestCase(RegionalResultType.SafetyFactor, 1)]
         public void CanConvertToOutputRegionalResultType(RegionalResultType regionalResultType, int outputRegionalResultType)