Index: Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/AssessmentSectionMergerTest.cs
===================================================================
diff -u -rcdb8bb817e1731b97aa9f4198b51f6ab88e76c8d -r03733ab29bedcd18c213b3d62b87080514a9a67b
--- Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/AssessmentSectionMergerTest.cs	(.../AssessmentSectionMergerTest.cs)	(revision cdb8bb817e1731b97aa9f4198b51f6ab88e76c8d)
+++ Ringtoets/Integration/test/Ringtoets.Integration.Plugin.Test/AssessmentSectionMergerTest.cs	(.../AssessmentSectionMergerTest.cs)	(revision 03733ab29bedcd18c213b3d62b87080514a9a67b)
@@ -20,10 +20,12 @@
 // All rights reserved.
 
 using System;
+using System.Linq;
 using Core.Common.Gui;
 using Core.Common.TestUtil;
 using NUnit.Framework;
 using Rhino.Mocks;
+using Ringtoets.Integration.Data;
 using Ringtoets.Integration.Service.Merge;
 
 namespace Ringtoets.Integration.Plugin.Test
@@ -69,7 +71,7 @@
         }
 
         [Test]
-        public void StartMerge_FilePathNotNull_Continue()
+        public void GivenValidFilePath_WhenAssessmentSectionProviderReturnNull_Abort()
         {
             // Setup
             var mocks = new MockRepository();
@@ -88,5 +90,26 @@
             TestHelper.AssertLogMessagesCount(call, 0);
             mocks.VerifyAll();
         }
+
+        [Test]
+        public void GivenValidFilePath_WhenAssessmentSectionProviderReturnEmptyCollection_LogErrorAndAbort()
+        {
+            // Setup
+            var mocks = new MockRepository();
+            var inquiryHelper = mocks.StrictMock<IInquiryHelper>();
+            inquiryHelper.Expect(helper => helper.GetSourceFileLocation(null)).IgnoreArguments().Return(string.Empty);
+            var assessmentSectionProvider = mocks.StrictMock<IAssessmentSectionProvider>();
+            assessmentSectionProvider.Expect(asp => asp.GetAssessmentSections(null)).IgnoreArguments().Return(Enumerable.Empty<AssessmentSection>());
+            mocks.ReplayAll();
+
+            var merger = new AssessmentSectionMerger(inquiryHelper, assessmentSectionProvider);
+
+            // Call
+            Action call = () => merger.StartMerge();
+
+            // Assert
+            TestHelper.AssertLogMessageWithLevelIsGenerated(call, new Tuple<string, LogLevelConstant>("Er zijn geen trajecten gevonden die samengevoegd kunnen worden.", LogLevelConstant.Error), 1);
+            mocks.VerifyAll();
+        }
     }
 }
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