Index: Ringtoets/Integration/test/Ringtoets.Integration.Service.Test/MessageProviders/DesignWaterLevelCalculationMessageProviderTest.cs
===================================================================
diff -u -rc7cfd69ca9c95a190e7cc4d0f8184d0c69bbc1c2 -r5a864f08fc61b4959681ed2561aca7a6d5ad37bc
--- Ringtoets/Integration/test/Ringtoets.Integration.Service.Test/MessageProviders/DesignWaterLevelCalculationMessageProviderTest.cs	(.../DesignWaterLevelCalculationMessageProviderTest.cs)	(revision c7cfd69ca9c95a190e7cc4d0f8184d0c69bbc1c2)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Service.Test/MessageProviders/DesignWaterLevelCalculationMessageProviderTest.cs	(.../DesignWaterLevelCalculationMessageProviderTest.cs)	(revision 5a864f08fc61b4959681ed2561aca7a6d5ad37bc)
@@ -30,10 +30,32 @@
     public class DesignWaterLevelCalculationMessageProviderTest
     {
         [Test]
+        public void Constructor_CategoryBoundaryNameNull_ThrowsArgumentException()
+        {
+            // Call
+            TestDelegate call = () => new DesignWaterLevelCalculationMessageProvider(null);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentException>(call);
+            Assert.AreEqual("'categoryBoundaryName' must have a value.", exception.Message);
+        }
+
+        [Test]
+        public void Constructor_CategoryBoundaryNameEmpty_ThrowsArgumentException()
+        {
+            // Call
+            TestDelegate call = () => new DesignWaterLevelCalculationMessageProvider("");
+
+            // Assert
+            var exception = Assert.Throws<ArgumentException>(call);
+            Assert.AreEqual("'categoryBoundaryName' must have a value.", exception.Message);
+        }
+
+        [Test]
         public void Constructor_ExpectedValues()
         {
             // Call
-            var provider = new DesignWaterLevelCalculationMessageProvider();
+            var provider = new DesignWaterLevelCalculationMessageProvider("Category description");
 
             // Assert
             Assert.IsInstanceOf<ICalculationMessageProvider>(provider);
@@ -46,7 +68,8 @@
         public void GetActivityDescription_VariousParameters_ReturnsExpectedValue(string name)
         {
             // Setup
-            var provider = new DesignWaterLevelCalculationMessageProvider();
+            const string categoryBoundaryName = "Category description";
+            var provider = new DesignWaterLevelCalculationMessageProvider(categoryBoundaryName);
 
             // Call
             string activityDescription = provider.GetActivityDescription(name);
@@ -63,7 +86,8 @@
         public void GetCalculationFailedMessage_VariousParameters_ReturnsExpectedValue(string name)
         {
             // Setup
-            var provider = new DesignWaterLevelCalculationMessageProvider();
+            const string categoryBoundaryName = "Category description";
+            var provider = new DesignWaterLevelCalculationMessageProvider(categoryBoundaryName);
 
             // Call
             string message = provider.GetCalculationFailedMessage(name);
@@ -81,7 +105,8 @@
         public void GetCalculationFailedWithErrorReportMessage_ValidNames_ExpectedValues(string name)
         {
             // Setup
-            var provider = new DesignWaterLevelCalculationMessageProvider();
+            const string categoryBoundaryName = "Category description";
+            var provider = new DesignWaterLevelCalculationMessageProvider(categoryBoundaryName);
             const string failureMessage = "It failed";
 
             // Call
@@ -100,7 +125,8 @@
         public void GetCalculationFailedWithErrorReportMessage_ValidFailureMessages_ExpectedValues(string failureMessage)
         {
             // Setup
-            var provider = new DesignWaterLevelCalculationMessageProvider();
+            const string categoryBoundaryName = "Category description";
+            var provider = new DesignWaterLevelCalculationMessageProvider(categoryBoundaryName);
             const string name = "calculation name";
 
             // Call
@@ -119,7 +145,8 @@
         public void GetCalculatedNotConvergedMessage_VariousParameters_ReturnsExpectedValue(string name)
         {
             // Setup
-            var provider = new DesignWaterLevelCalculationMessageProvider();
+            const string categoryBoundaryName = "Category description";
+            var provider = new DesignWaterLevelCalculationMessageProvider(categoryBoundaryName);
 
             // Call
             string message = provider.GetCalculatedNotConvergedMessage(name);