Index: Ringtoets/HydraRing/test/Ringtoets.HydraRing.Calculation.Test/Readers/HydraRingDatabaseReaderTest.cs
===================================================================
diff -u -re73c8b159778b281ecb275512f42da65c0d02e9d -rb75888ac4a86ce24369ba0dad93cfe5bcd3fc794
--- Ringtoets/HydraRing/test/Ringtoets.HydraRing.Calculation.Test/Readers/HydraRingDatabaseReaderTest.cs	(.../HydraRingDatabaseReaderTest.cs)	(revision e73c8b159778b281ecb275512f42da65c0d02e9d)
+++ Ringtoets/HydraRing/test/Ringtoets.HydraRing.Calculation.Test/Readers/HydraRingDatabaseReaderTest.cs	(.../HydraRingDatabaseReaderTest.cs)	(revision b75888ac4a86ce24369ba0dad93cfe5bcd3fc794)
@@ -25,7 +25,6 @@
 using System.IO;
 using Core.Common.TestUtil;
 using NUnit.Framework;
-using Ringtoets.HydraRing.Calculation.Exceptions;
 using Ringtoets.HydraRing.Calculation.Readers;
 
 namespace Ringtoets.HydraRing.Calculation.Test.Readers
@@ -127,5 +126,71 @@
                 Assert.IsNull(result);
             }
         }
+
+        [Test]
+        public void NextResult_EmptyDatabase_ReturnsFalse()
+        {
+            // Setup
+            string directory = Path.Combine(testDirectory, emptyDatabase);
+
+            using (var reader = new HydraRingDatabaseReader(directory, query, 1))
+            {
+                // Call
+                bool couldGetNextResult = reader.NextResult();
+
+                // Assert
+                Assert.IsFalse(couldGetNextResult);
+            }
+        }
+
+        [Test]
+        public void NextResult_SingleResult_ReturnsFalse()
+        {
+            // Setup
+            string directory = Path.Combine(testDirectory, validDatabase);
+
+            using (var reader = new HydraRingDatabaseReader(directory, query, 1))
+            {
+                // Call
+                bool couldGetNextResult = reader.NextResult();
+
+                // Assert
+                Assert.IsFalse(couldGetNextResult);
+            }
+        }
+
+        [Test]
+        public void NextResult_MultipleResult_ReturnsTrue()
+        {
+            // Setup
+            string directory = Path.Combine(testDirectory, validDatabase);
+
+            using (var reader = new HydraRingDatabaseReader(directory, query + query, 1))
+            {
+                // Call
+                bool couldGetNextResult = reader.NextResult();
+
+                // Assert
+                Assert.IsTrue(couldGetNextResult);
+            }
+        }
+
+        [Test]
+        public void NextResult_MultipleResultProceededToSecondResult_ReturnsFalse()
+        {
+            // Setup
+            string directory = Path.Combine(testDirectory, validDatabase);
+
+            using (var reader = new HydraRingDatabaseReader(directory, query + query, 1))
+            {
+                reader.NextResult();
+
+                // Call
+                bool couldGetNextResult = reader.NextResult();
+
+                // Assert
+                Assert.IsFalse(couldGetNextResult);
+            }
+        }
     }
 }
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