Index: Ringtoets/Revetment/src/Ringtoets.Revetment.IO/ReadWaveConditionsInputStepSizeConverter.cs
===================================================================
diff -u -re786dd8b8c7f833c217fdcddd909a616d590fe15 -r4d2320dbad8c743ec1c63e3a6509dd297ce710b8
--- Ringtoets/Revetment/src/Ringtoets.Revetment.IO/ReadWaveConditionsInputStepSizeConverter.cs	(.../ReadWaveConditionsInputStepSizeConverter.cs)	(revision e786dd8b8c7f833c217fdcddd909a616d590fe15)
+++ Ringtoets/Revetment/src/Ringtoets.Revetment.IO/ReadWaveConditionsInputStepSizeConverter.cs	(.../ReadWaveConditionsInputStepSizeConverter.cs)	(revision 4d2320dbad8c743ec1c63e3a6509dd297ce710b8)
@@ -49,10 +49,6 @@
 
         public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
         {
-            if (sourceType == typeof(string))
-            {
-                return true;
-            }
             if (sourceType == typeof(double?))
             {
                 return true;
@@ -62,24 +58,6 @@
 
         public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
         {
-            var text = value as string;
-            if (text != null)
-            {
-                string decimalSeperator = culture.NumberFormat.NumberDecimalSeparator;
-                if ($"0{decimalSeperator}5".Equals(text))
-                {
-                    return ReadWaveConditionsInputStepSize.Half;
-                }
-                if ($"1{decimalSeperator}0".Equals(text))
-                {
-                    return ReadWaveConditionsInputStepSize.One;
-                }
-                if ($"2{decimalSeperator}0".Equals(text))
-                {
-                    return ReadWaveConditionsInputStepSize.Two;
-                }
-            }
-
             var doubleValue = value as double?;
             if (doubleValue != null)
             {
Index: Ringtoets/Revetment/test/Ringtoets.Revetment.IO.Test/ReadWaveConditionsInputStepSizeConverterTest.cs
===================================================================
diff -u
--- Ringtoets/Revetment/test/Ringtoets.Revetment.IO.Test/ReadWaveConditionsInputStepSizeConverterTest.cs	(revision 0)
+++ Ringtoets/Revetment/test/Ringtoets.Revetment.IO.Test/ReadWaveConditionsInputStepSizeConverterTest.cs	(revision 4d2320dbad8c743ec1c63e3a6509dd297ce710b8)
@@ -0,0 +1,187 @@
+// Copyright (C) Stichting Deltares 2016. All rights reserved.
+//
+// This file is part of Ringtoets.
+//
+// Ringtoets is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// All names, logos, and references to "Deltares" are registered trademarks of
+// Stichting Deltares and remain full property of Stichting Deltares at all times.
+// All rights reserved.
+
+using System;
+using System.ComponentModel;
+using System.Globalization;
+using NUnit.Framework;
+
+namespace Ringtoets.Revetment.IO.Test
+{
+    [TestFixture]
+    public class ReadWaveConditionsInputStepSizeConverterTest
+    {
+        [Test]
+        public void Constructor_ExpectedValues()
+        {
+            // Call
+            var converter = new ReadWaveConditionsInputStepSizeConverter();
+
+            // Assert
+            Assert.IsInstanceOf<TypeConverter>(converter);
+        }
+
+        [Test]
+        public void CanConvertTo_String_ReturnTrue()
+        {
+            // Setup
+            var converter = new ReadWaveConditionsInputStepSizeConverter();
+
+            // Call
+            bool canConvertToString = converter.CanConvertTo(typeof(string));
+
+            // Assert
+            Assert.IsTrue(canConvertToString);
+        }
+
+        [Test]
+        public void CanConvertTo_OtherTypeThanString_ReturnFalse()
+        {
+            // Setup
+            var converter = new ReadWaveConditionsInputStepSizeConverter();
+
+            // Call
+            bool canConvertToNonString = converter.CanConvertTo(typeof(object));
+
+            // Assert
+            Assert.IsFalse(canConvertToNonString);
+        }
+
+        [Test]
+        [SetCulture("nl-NL")]
+        [TestCase(ReadWaveConditionsInputStepSize.Half, "0,5")]
+        [TestCase(ReadWaveConditionsInputStepSize.One, "1,0")]
+        [TestCase(ReadWaveConditionsInputStepSize.Two, "2,0")]
+        public void ConvertTo_ForAllEnumValues_ReturnExpectedText(ReadWaveConditionsInputStepSize value,
+                                                                  string expectedText)
+        {
+            // Setup
+            var converter = new ReadWaveConditionsInputStepSizeConverter();
+
+            // Call
+            object result = converter.ConvertTo(null, CultureInfo.CurrentCulture, value, typeof(string));
+
+            // Assert
+            Assert.AreEqual(expectedText, result);
+        }
+
+        [Test]
+        public void ConvertTo_Object_ThrowNotSupportedException()
+        {
+            // Setup
+            var converter = new ReadWaveConditionsInputStepSizeConverter();
+
+            // Call
+            TestDelegate call = () => converter.ConvertTo(ReadWaveConditionsInputStepSize.Half, typeof(object));
+
+            // Assert
+            Assert.Throws<NotSupportedException>(call);
+        }
+
+        [Test]
+        public void CanConvertFrom_NullableDouble_ReturnTrue()
+        {
+            // Setup
+            var converter = new ReadWaveConditionsInputStepSizeConverter();
+
+            // Call
+            bool canConvertFromNullableDouble = converter.CanConvertFrom(typeof(double?));
+
+            // Assert
+            Assert.IsTrue(canConvertFromNullableDouble);
+        }
+
+        [Test]
+        public void CanConvertFrom_NonNullableDouble_ReturnFalse()
+        {
+            // Setup
+            var converter = new ReadWaveConditionsInputStepSizeConverter();
+
+            // Call
+            bool canConvertFromString = converter.CanConvertFrom(typeof(object));
+
+            // Assert
+            Assert.IsFalse(canConvertFromString);
+        }
+
+        [Test]
+        [TestCase(0.5, ReadWaveConditionsInputStepSize.Half)]
+        [TestCase(1, ReadWaveConditionsInputStepSize.One)]
+        [TestCase(2, ReadWaveConditionsInputStepSize.Two)]
+        public void ConvertFrom_VariousDoubles_ReturnWaveConditionsInputStepSize(double value,
+                                                                                 ReadWaveConditionsInputStepSize expectedResult)
+        {
+            // Setup
+            var converter = new ReadWaveConditionsInputStepSizeConverter();
+
+            // Call
+            object result = converter.ConvertFrom(null, CultureInfo.CurrentCulture, value);
+
+            // Assert
+            Assert.AreEqual(expectedResult, result);
+        }
+
+        [Test]
+        [SetCulture("nl-NL")]
+        public void ConvertFrom_InvalidText_ThrowNotSupportedException()
+        {
+            // Setup
+            var converter = new ReadWaveConditionsInputStepSizeConverter();
+
+            // Call
+            TestDelegate call = () => converter.ConvertFrom("1x");
+
+            // Assert
+            Assert.Throws<NotSupportedException>(call);
+        }
+
+        [Test]
+        [TestCase(2.001)]
+        [TestCase(double.PositiveInfinity)]
+        [TestCase(double.NegativeInfinity)]
+        [TestCase(double.NaN)]
+        [TestCase(-0.5)]
+        public void ConvertFrom_InvalidDoubleValue_ThrowNotSupportedException(double value)
+        {
+            // Setup
+            var converter = new ReadWaveConditionsInputStepSizeConverter();
+
+            // Call
+            TestDelegate call = () => converter.ConvertFrom(value);
+
+            // Assert
+            Assert.Throws<NotSupportedException>(call);
+        }
+
+        [Test]
+        public void ConvertFrom_Null_ThrowNotSupportedException()
+        {
+            // Setup
+            var converter = new ReadWaveConditionsInputStepSizeConverter();
+
+            // Call
+            TestDelegate call = () => converter.ConvertFrom(null);
+
+            // Assert        
+            Assert.Throws<NotSupportedException>(call);
+        }
+    }
+}
\ No newline at end of file
Fisheye: Tag 4d2320dbad8c743ec1c63e3a6509dd297ce710b8 refers to a dead (removed) revision in file `Ringtoets/Revetment/test/Ringtoets.Revetment.IO.Test/ReadWaveConditionsInputStepSizeTypeConverterTest.cs'.
Fisheye: No comparison available.  Pass `N' to diff?
Index: Ringtoets/Revetment/test/Ringtoets.Revetment.IO.Test/Ringtoets.Revetment.IO.Test.csproj
===================================================================
diff -u -r56daaecf144ac21035cad0977ae4c2c8294449c0 -r4d2320dbad8c743ec1c63e3a6509dd297ce710b8
--- Ringtoets/Revetment/test/Ringtoets.Revetment.IO.Test/Ringtoets.Revetment.IO.Test.csproj	(.../Ringtoets.Revetment.IO.Test.csproj)	(revision 56daaecf144ac21035cad0977ae4c2c8294449c0)
+++ Ringtoets/Revetment/test/Ringtoets.Revetment.IO.Test/Ringtoets.Revetment.IO.Test.csproj	(.../Ringtoets.Revetment.IO.Test.csproj)	(revision 4d2320dbad8c743ec1c63e3a6509dd297ce710b8)
@@ -60,7 +60,7 @@
     <Compile Include="WaveConditionsCalculationConfigurationSchemaIdentifiersTest.cs" />
     <Compile Include="Writers\WaveConditionsCalculationConfigurationWriterTest.cs" />
     <Compile Include="Exporters\WaveConditionsExporterBaseTest.cs" />
-    <Compile Include="ReadWaveConditionsInputStepSizeTypeConverterTest.cs" />
+    <Compile Include="ReadWaveConditionsInputStepSizeConverterTest.cs" />
     <Compile Include="Writers\WaveConditionsWriterTest.cs" />
   </ItemGroup>
   <ItemGroup>