Index: Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Parsers/ConvergenceParser.cs
===================================================================
diff -u -r4bf03fe0c441a3f3d439bc7ffe09350227435178 -rc235d644419c9f398fd806f7dce2592f0974ac97
--- Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Parsers/ConvergenceParser.cs	(.../ConvergenceParser.cs)	(revision 4bf03fe0c441a3f3d439bc7ffe09350227435178)
+++ Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Parsers/ConvergenceParser.cs	(.../ConvergenceParser.cs)	(revision c235d644419c9f398fd806f7dce2592f0974ac97)
@@ -20,8 +20,6 @@
 // All rights reserved.
 
 using System;
-using System.Data.SQLite;
-using Ringtoets.HydraRing.Calculation.Exceptions;
 using Ringtoets.HydraRing.Calculation.Properties;
 using Ringtoets.HydraRing.Calculation.Readers;
 
@@ -53,38 +51,14 @@
                 throw new ArgumentNullException(nameof(workingDirectory));
             }
 
-            ParseFile(workingDirectory, sectionId);
+            HydraRingDatabaseParseHelper.Parse(workingDirectory,
+                                               getLastResultQuery,
+                                               sectionId,
+                                               Resources.ParseFile_No_convergence_found_in_output_file,
+                                               ReadResult);
         }
 
         /// <summary>
-        /// Parses the file.
-        /// </summary>
-        /// <param name="workingDirectory">The path to the directory which contains
-        /// the output of the Hydra-Ring calculation.</param>
-        /// <param name="sectionId">The section id to get the output for.</param>
-        /// <exception cref="HydraRingFileParserException">Thrown when the reader
-        /// encounters an error while reading the database.</exception>
-        private void ParseFile(string workingDirectory, int sectionId)
-        {
-            try
-            {
-                using (var reader = new HydraRingDatabaseReader(workingDirectory, getLastResultQuery, sectionId))
-                {
-                    reader.Execute();
-                    ReadResult(reader);
-                }
-            }
-            catch (SQLiteException e)
-            {
-                throw new HydraRingFileParserException(Resources.ParseFile_Cannot_read_result_in_output_file, e);
-            }
-            catch (Exception e) when (e is HydraRingDatabaseReaderException || e is InvalidCastException)
-            {
-                throw new HydraRingFileParserException(Resources.ParseFile_No_convergence_found_in_output_file, e);
-            }
-        }
-
-        /// <summary>
         /// Reads the result of the <paramref name="reader"/>.
         /// </summary>
         /// <param name="reader">The reader to get the result from.</param>
Index: Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Parsers/DunesBoundaryConditionsCalculationParser.cs
===================================================================
diff -u -r4bf03fe0c441a3f3d439bc7ffe09350227435178 -rc235d644419c9f398fd806f7dce2592f0974ac97
--- Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Parsers/DunesBoundaryConditionsCalculationParser.cs	(.../DunesBoundaryConditionsCalculationParser.cs)	(revision 4bf03fe0c441a3f3d439bc7ffe09350227435178)
+++ Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Parsers/DunesBoundaryConditionsCalculationParser.cs	(.../DunesBoundaryConditionsCalculationParser.cs)	(revision c235d644419c9f398fd806f7dce2592f0974ac97)
@@ -20,9 +20,7 @@
 // All rights reserved.
 
 using System;
-using System.Data.SQLite;
 using Ringtoets.HydraRing.Calculation.Data.Output;
-using Ringtoets.HydraRing.Calculation.Exceptions;
 using Ringtoets.HydraRing.Calculation.Properties;
 using Ringtoets.HydraRing.Calculation.Readers;
 
@@ -59,38 +57,14 @@
                 throw new ArgumentNullException(nameof(workingDirectory));
             }
 
-            ParseFile(workingDirectory, sectionId);
+            HydraRingDatabaseParseHelper.Parse(workingDirectory,
+                                               query,
+                                               sectionId,
+                                               Resources.DunesBoundaryConditionsCalculationParser_ParseFile_No_dunes_hydraulic_boundaries_found_in_output_file,
+                                               ReadResult);
         }
 
         /// <summary>
-        /// Parses the file.
-        /// </summary>
-        /// <param name="workingDirectory">The path to the directory which contains
-        /// the output of the Hydra-Ring calculation.</param>
-        /// <param name="sectionId">The section id to get the output for.</param>
-        /// <exception cref="HydraRingFileParserException">Thrown when the reader
-        /// encounters an error while reading the database.</exception>
-        private void ParseFile(string workingDirectory, int sectionId)
-        {
-            try
-            {
-                using (var reader = new HydraRingDatabaseReader(workingDirectory, query, sectionId))
-                {
-                    reader.Execute();
-                    ReadResult(reader);
-                }
-            }
-            catch (SQLiteException e)
-            {
-                throw new HydraRingFileParserException(Resources.ParseFile_Cannot_read_result_in_output_file, e);
-            }
-            catch (Exception e) when (e is HydraRingDatabaseReaderException || e is InvalidCastException)
-            {
-                throw new HydraRingFileParserException(Resources.DunesBoundaryConditionsCalculationParser_ParseFile_No_dunes_hydraulic_boundaries_found_in_output_file, e);
-            }
-        }
-
-        /// <summary>
         /// Reads the result of the <paramref name="reader"/>.
         /// </summary>
         /// <param name="reader">The reader to get the result from.</param>
Index: Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Parsers/HydraRingDatabaseParseHelper.cs
===================================================================
diff -u
--- Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Parsers/HydraRingDatabaseParseHelper.cs	(revision 0)
+++ Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Parsers/HydraRingDatabaseParseHelper.cs	(revision c235d644419c9f398fd806f7dce2592f0974ac97)
@@ -0,0 +1,96 @@
+// 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.Data.SQLite;
+using Ringtoets.HydraRing.Calculation.Exceptions;
+using Ringtoets.HydraRing.Calculation.Properties;
+using Ringtoets.HydraRing.Calculation.Readers;
+
+namespace Ringtoets.HydraRing.Calculation.Parsers
+{
+    /// <summary>
+    /// Helper class for methods that apply for parsing the output from the database.
+    /// </summary>
+    internal static class HydraRingDatabaseParseHelper
+    {
+        /// <summary>
+        /// Parses the file.
+        /// </summary>
+        /// <param name="workingDirectory">The path to the directory which contains
+        /// the output of the Hydra-Ring calculation.</param>
+        /// <param name="query">The query to perform when reading the database.</param>
+        /// <param name="sectionId">The section id to get the output for.</param>
+        /// <param name="exceptionMessage">The exception message when there is no result.</param>
+        /// <param name="readResultAction">The action to perform for getting the results of the
+        /// database.</param>
+        /// <exception cref="HydraRingFileParserException">Thrown when the reader
+        /// encounters an error while reading the database.</exception>
+        public static void Parse(string workingDirectory,
+                                 string query,
+                                 int sectionId,
+                                 string exceptionMessage,
+                                 Action<HydraRingDatabaseReader> readResultAction)
+        {
+            ValidateParameters(workingDirectory, query, exceptionMessage, readResultAction);
+
+            try
+            {
+                using (var reader = new HydraRingDatabaseReader(workingDirectory, query, sectionId))
+                {
+                    reader.Execute();
+                    readResultAction(reader);
+                }
+            }
+            catch (SQLiteException e)
+            {
+                throw new HydraRingFileParserException(Resources.ParseFile_Cannot_read_result_in_output_file, e);
+            }
+            catch (Exception e) when (e is HydraRingDatabaseReaderException || e is InvalidCastException)
+            {
+                throw new HydraRingFileParserException(exceptionMessage, e);
+            }
+        }
+
+        private static void ValidateParameters(string workingDirectory,
+                                               string query,
+                                               string exceptionMessage,
+                                               Action<HydraRingDatabaseReader> readResultAction)
+        {
+            if (workingDirectory == null)
+            {
+                throw new ArgumentNullException(nameof(workingDirectory));
+            }
+            if (query == null)
+            {
+                throw new ArgumentNullException(nameof(query));
+            }
+            if (exceptionMessage == null)
+            {
+                throw new ArgumentNullException(nameof(exceptionMessage));
+            }
+            if (readResultAction == null)
+            {
+                throw new ArgumentNullException(nameof(readResultAction));
+            }
+        }
+    }
+}
\ No newline at end of file
Index: Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Ringtoets.HydraRing.Calculation.csproj
===================================================================
diff -u -r31caf3dc885ae62d4b3772eb0421a3155101bcf4 -rc235d644419c9f398fd806f7dce2592f0974ac97
--- Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Ringtoets.HydraRing.Calculation.csproj	(.../Ringtoets.HydraRing.Calculation.csproj)	(revision 31caf3dc885ae62d4b3772eb0421a3155101bcf4)
+++ Ringtoets/HydraRing/src/Ringtoets.HydraRing.Calculation/Ringtoets.HydraRing.Calculation.csproj	(.../Ringtoets.HydraRing.Calculation.csproj)	(revision c235d644419c9f398fd806f7dce2592f0974ac97)
@@ -111,6 +111,7 @@
     <Compile Include="Exceptions\HydraRingFileParserException.cs" />
     <Compile Include="Parsers\DunesBoundaryConditionsCalculationParser.cs" />
     <Compile Include="Parsers\ConvergenceParser.cs" />
+    <Compile Include="Parsers\HydraRingDatabaseParseHelper.cs" />
     <Compile Include="Readers\HydraRingDatabaseReader.cs" />
     <Compile Include="Parsers\LastErrorFileParser.cs" />
     <Compile Include="Parsers\OvertoppingCalculationWaveHeightParser.cs" />
Index: Ringtoets/HydraRing/test/Ringtoets.HydraRing.Calculation.Test/Parsers/HydraRingDatabaseParseHelperTest.cs
===================================================================
diff -u
--- Ringtoets/HydraRing/test/Ringtoets.HydraRing.Calculation.Test/Parsers/HydraRingDatabaseParseHelperTest.cs	(revision 0)
+++ Ringtoets/HydraRing/test/Ringtoets.HydraRing.Calculation.Test/Parsers/HydraRingDatabaseParseHelperTest.cs	(revision c235d644419c9f398fd806f7dce2592f0974ac97)
@@ -0,0 +1,151 @@
+// 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.IO;
+using Core.Common.TestUtil;
+using NUnit.Framework;
+using Ringtoets.HydraRing.Calculation.Exceptions;
+using Ringtoets.HydraRing.Calculation.Parsers;
+
+namespace Ringtoets.HydraRing.Calculation.Test.Parsers
+{
+    [TestFixture]
+    public class HydraRingDatabaseParseHelperTest
+    {
+        private const string emptyWorkingDirectory = "EmptyWorkingDirectory";
+        private const string emptyDatabase = "EmptyDatabase";
+        private const string validFile = "ValidFile";
+
+        private const string query = "SELECT * FROM IterateToGivenBetaConvergence " +
+                                     "WHERE OuterIterationId = (SELECT MAX(OuterIterationId) FROM IterateToGivenBetaConvergence);";
+
+        private static readonly string testDirectory = TestHelper.GetTestDataPath(TestDataPath.Ringtoets.HydraRing.Calculation,
+                                                                                  Path.Combine("Readers", nameof(HydraRingDatabaseParseHelper)));
+
+        [Test]
+        public void Parse_WorkingDirectoryNull_ThrowArgumentNullException()
+        {
+            // Call
+            TestDelegate test = () => HydraRingDatabaseParseHelper.Parse(null, "", 0, "", reader => { });
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(test);
+            Assert.AreEqual("workingDirectory", exception.ParamName);
+        }
+
+        [Test]
+        public void Parse_QueryNull_ThrowArgumentNullException()
+        {
+            // Call
+            TestDelegate test = () => HydraRingDatabaseParseHelper.Parse("", null, 0, "", reader => { });
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(test);
+            Assert.AreEqual("query", exception.ParamName);
+        }
+        [Test]
+        public void Parse_ExceptionMessageNull_ThrowArgumentNullException()
+        {
+            // Call
+            TestDelegate test = () => HydraRingDatabaseParseHelper.Parse("", "", 0, null, reader => { });
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(test);
+            Assert.AreEqual("exceptionMessage", exception.ParamName);
+        }
+        [Test]
+        public void Parse_ReadResultActionNull_ThrowArgumentNullException()
+        {
+            // Call
+            TestDelegate test = () => HydraRingDatabaseParseHelper.Parse("", "", 0, "", null);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(test);
+            Assert.AreEqual("readResultAction", exception.ParamName);
+        }
+
+        [Test]
+        public void Parse_ReaderThrowsSQLiteException_ThrowHydraRingFileParserException()
+        {
+            // Setup
+            string directory = Path.Combine(testDirectory, emptyWorkingDirectory);
+
+            // Call
+            TestDelegate test = () => HydraRingDatabaseParseHelper.Parse(directory, query, 0, "", reader => { });
+
+            // Assert
+            var exception = Assert.Throws<HydraRingFileParserException>(test);
+            Assert.AreEqual("Er kon geen resultaat gelezen worden uit de Hydra-Ring uitvoerdatabase.", exception.Message);
+        }
+
+        [Test]
+        public void Parse_ReaderThrowsHydraRingDatabaseReaderException_ThrowHydraRingFileParserExceptionWithCustomMessage()
+        {
+            // Setup
+            const string customMessage = "Exception message";
+            string directory = Path.Combine(testDirectory, emptyDatabase);
+
+            // Call
+            TestDelegate test = () => HydraRingDatabaseParseHelper.Parse(directory, query, 0, customMessage, reader => { });
+
+            // Assert
+            var exception = Assert.Throws<HydraRingFileParserException>(test);
+            Assert.AreEqual(customMessage, exception.Message);
+        }
+
+        [Test]
+        public void Parse_ReadResultActionThrowsInvalidCastException_ThrowHydraRingFileParserExceptionWithCustomMessage()
+        {
+            // Setup
+            const string customMessage = "Exception message";
+            string directory = Path.Combine(testDirectory, validFile);
+
+            // Call
+            TestDelegate test = () => HydraRingDatabaseParseHelper.Parse(directory, query, 0, customMessage, reader =>
+            {
+                throw new InvalidCastException();
+            });
+
+            // Assert
+            var exception = Assert.Throws<HydraRingFileParserException>(test);
+            Assert.AreEqual(customMessage, exception.Message);
+        }
+
+        [Test]
+        public void Parse_ValidData_ReadResultActionPerformed()
+        {
+
+            // Setup
+            string directory = Path.Combine(testDirectory, validFile);
+            var performed = false;
+
+            // Call
+            HydraRingDatabaseParseHelper.Parse(directory, query, 0, "", reader =>
+            {
+                performed = true;
+            });
+
+            // Assert
+            Assert.IsTrue(performed);
+        }
+    }
+}
\ No newline at end of file
Index: Ringtoets/HydraRing/test/Ringtoets.HydraRing.Calculation.Test/Ringtoets.HydraRing.Calculation.Test.csproj
===================================================================
diff -u -r31caf3dc885ae62d4b3772eb0421a3155101bcf4 -rc235d644419c9f398fd806f7dce2592f0974ac97
--- Ringtoets/HydraRing/test/Ringtoets.HydraRing.Calculation.Test/Ringtoets.HydraRing.Calculation.Test.csproj	(.../Ringtoets.HydraRing.Calculation.Test.csproj)	(revision 31caf3dc885ae62d4b3772eb0421a3155101bcf4)
+++ Ringtoets/HydraRing/test/Ringtoets.HydraRing.Calculation.Test/Ringtoets.HydraRing.Calculation.Test.csproj	(.../Ringtoets.HydraRing.Calculation.Test.csproj)	(revision c235d644419c9f398fd806f7dce2592f0974ac97)
@@ -112,6 +112,7 @@
     <Compile Include="Parsers\DunesBoundaryConditionsCalculationParserTest.cs" />
     <Compile Include="Parsers\ConvergenceParserTest.cs" />
     <Compile Include="Parsers\ExceedanceProbabilityCalculationParserTest.cs" />
+    <Compile Include="Parsers\HydraRingDatabaseParseHelperTest.cs" />
     <Compile Include="Readers\HydraRingDatabaseReaderTest.cs" />
     <Compile Include="Parsers\LastErrorFileParserTest.cs" />
     <Compile Include="Parsers\OvertoppingCalculationWaveHeightParserTest.cs" />
Index: Ringtoets/HydraRing/test/Ringtoets.HydraRing.Calculation.Test/test-data/Readers/HydraRingDatabaseParseHelper/EmptyDatabase/output.sqlite
===================================================================
diff -u
Binary files differ
Index: Ringtoets/HydraRing/test/Ringtoets.HydraRing.Calculation.Test/test-data/Readers/HydraRingDatabaseParseHelper/ValidFile/output.sqlite
===================================================================
diff -u
Binary files differ