Index: Ringtoets/HydraRing/test/Ringtoets.HydraRing.Calculation.Test/Calculator/WaveConditionsCosineCalculatorTest.cs
===================================================================
diff -u -re69acb9595f7bf1d202ddd1fb51934b66768b75d -rb646e027b7b030947d7339c442d44810d9347893
--- Ringtoets/HydraRing/test/Ringtoets.HydraRing.Calculation.Test/Calculator/WaveConditionsCosineCalculatorTest.cs	(.../WaveConditionsCosineCalculatorTest.cs)	(revision e69acb9595f7bf1d202ddd1fb51934b66768b75d)
+++ Ringtoets/HydraRing/test/Ringtoets.HydraRing.Calculation.Test/Calculator/WaveConditionsCosineCalculatorTest.cs	(.../WaveConditionsCosineCalculatorTest.cs)	(revision b646e027b7b030947d7339c442d44810d9347893)
@@ -20,12 +20,26 @@
 // All rights reserved.
 
 using NUnit.Framework;
+using Ringtoets.HydraRing.Calculation.Calculator;
 
 namespace Ringtoets.HydraRing.Calculation.Test.Calculator
 {
     [TestFixture]
     public class WaveConditionsCosineCalculatorTest
     {
+        [Test]
+        public void DefaultConstructor_InitializesOutputWithoutValues()
+        {
+            // Call
+            var calculator = new WaveConditionsCosineCalculator(string.Empty, string.Empty);
+
+            // Assert
+            Assert.IsInstanceOf<HydraRingCalculatorBase>(calculator);
+            Assert.IsNaN(calculator.WaveHeight);
+            Assert.IsNaN(calculator.WaveAngle);
+            Assert.IsNaN(calculator.WavePeakPeriod);
+            Assert.IsNull(calculator.OutputFileContent);
+        }
          
     }
 }
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