Index: Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Data.Test/ClosingStructuresInputTest.cs
===================================================================
diff -u -rbcaf65d1f53f270fba046eaa396d3be77bd08c0f -r1a6804681b0758a5761e39099e4b6de65f9cf4a2
--- Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Data.Test/ClosingStructuresInputTest.cs	(.../ClosingStructuresInputTest.cs)	(revision bcaf65d1f53f270fba046eaa396d3be77bd08c0f)
+++ Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Data.Test/ClosingStructuresInputTest.cs	(.../ClosingStructuresInputTest.cs)	(revision 1a6804681b0758a5761e39099e4b6de65f9cf4a2)
@@ -164,12 +164,16 @@
         }
 
         [Test]
-        public void Properties_DeviationWaveDirection_ExpectedValues()
+        [TestCase(360.004)]
+        [TestCase(300)]
+        [TestCase(0)]
+        [TestCase(-360.004)]
+        [TestCase(double.NaN)]
+        public void Properties_DeviationWaveDirection_ExpectedValues(double validValue)
         {
             // Setup
-            var random = new Random(22);
             var input = new ClosingStructuresInput();
-            var deviationWaveDirection = new RoundedDouble(5, random.NextDouble());
+            var deviationWaveDirection = new RoundedDouble(5, validValue);
 
             // Call
             input.DeviationWaveDirection = deviationWaveDirection;
@@ -179,6 +183,25 @@
             AssertAreEqual(deviationWaveDirection, input.DeviationWaveDirection);
         }
 
+        [Test]
+        [TestCase(400)]
+        [TestCase(360.05)]
+        [TestCase(-360.005)]
+        [TestCase(-400)]
+        [TestCase(double.PositiveInfinity)]
+        [TestCase(double.NegativeInfinity)]
+        public void Properties_StructureNormalOrientationInValidValues_ThrowsArgumentOutOfRangeException(double invalidValue)
+        {
+            // Setup
+            var input = new ClosingStructuresInput();
+
+            // Call
+            TestDelegate call = () => input.DeviationWaveDirection = (RoundedDouble) invalidValue;
+
+            // Assert
+            TestHelper.AssertThrowsArgumentExceptionAndTestMessage<ArgumentOutOfRangeException>(call, "De waarde voor afwijking golfrichting moet in het bereik [-360, 360] liggen.");
+        }
+
         #endregion
 
         #region Model factors