Index: Riskeer/MacroStabilityInwards/src/Riskeer.MacroStabilityInwards.Data/MacroStabilityInwardsFailureMechanismAssemblyFactory.cs
===================================================================
diff -u -rec2c838182ed237b3abd753347a861857129331b -r450fdfb2f034723cf74dc02d58cc1d9248f414a4
--- Riskeer/MacroStabilityInwards/src/Riskeer.MacroStabilityInwards.Data/MacroStabilityInwardsFailureMechanismAssemblyFactory.cs	(.../MacroStabilityInwardsFailureMechanismAssemblyFactory.cs)	(revision ec2c838182ed237b3abd753347a861857129331b)
+++ Riskeer/MacroStabilityInwards/src/Riskeer.MacroStabilityInwards.Data/MacroStabilityInwardsFailureMechanismAssemblyFactory.cs	(.../MacroStabilityInwardsFailureMechanismAssemblyFactory.cs)	(revision 450fdfb2f034723cf74dc02d58cc1d9248f414a4)
@@ -19,21 +19,50 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System;
 using System.Linq;
 using Riskeer.AssemblyTool.Data;
 using Riskeer.Common.Data.AssemblyTool;
 using Riskeer.Common.Data.AssessmentSection;
+using Riskeer.Common.Data.Exceptions;
 using Riskeer.Common.Data.FailureMechanism;
 using Riskeer.Common.Data.Probability;
 
 namespace Riskeer.MacroStabilityInwards.Data
 {
+    /// <summary>
+    /// Factory for assembling assembly results for a macro stability inwards failure mechanism.
+    /// </summary>
     public static class MacroStabilityInwardsFailureMechanismAssemblyFactory
     {
+        /// <summary>
+        /// Assembles the section based on the input arguments.
+        /// </summary>
+        /// <param name="sectionResult">The section result to assemble.</param>
+        /// <param name="failureMechanism">The <see cref="MacroStabilityInwardsFailureMechanism"/> the section result belongs to.</param>
+        /// <param name="assessmentSection">The <see cref="IAssessmentSection"/> the section belongs to.</param>
+        /// <returns>A <see cref="FailureMechanismSectionAssemblyResult"/>.</returns>
+        /// <exception cref="ArgumentNullException">Thrown when any argument is <c>null</c>.</exception>
+        /// <exception cref="AssemblyException">Thrown when the section could not be assembled.</exception>
         public static FailureMechanismSectionAssemblyResult AssembleSection(AdoptableWithProfileProbabilityFailureMechanismSectionResult sectionResult,
                                                                             MacroStabilityInwardsFailureMechanism failureMechanism,
                                                                             IAssessmentSection assessmentSection)
         {
+            if (sectionResult == null)
+            {
+                throw new ArgumentNullException(nameof(sectionResult));
+            }
+
+            if (failureMechanism == null)
+            {
+                throw new ArgumentNullException(nameof(failureMechanism));
+            }
+
+            if (assessmentSection == null)
+            {
+                throw new ArgumentNullException(nameof(assessmentSection));
+            }
+
             MacroStabilityInwardsCalculationScenario[] calculationScenarios = failureMechanism.Calculations
                                                                                               .OfType<MacroStabilityInwardsCalculationScenario>()
                                                                                               .ToArray();
Fisheye: Tag 329e30ee29526f5fecbd3ec0282d8cf762a3fc2c refers to a dead (removed) revision in file `Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.Data.Test/MacroStabilityInwardsFailureMechanismAssemblyFactoryTest.cs'.
Fisheye: No comparison available.  Pass `N' to diff?
Index: Riskeer/Piping/test/Riskeer.Piping.Data.Test/PipingFailureMechanismAssemblyFactoryTest.cs
===================================================================
diff -u -r1701ba2f2285c21eb6358de35af2a169b51f6b6e -r450fdfb2f034723cf74dc02d58cc1d9248f414a4
--- Riskeer/Piping/test/Riskeer.Piping.Data.Test/PipingFailureMechanismAssemblyFactoryTest.cs	(.../PipingFailureMechanismAssemblyFactoryTest.cs)	(revision 1701ba2f2285c21eb6358de35af2a169b51f6b6e)
+++ Riskeer/Piping/test/Riskeer.Piping.Data.Test/PipingFailureMechanismAssemblyFactoryTest.cs	(.../PipingFailureMechanismAssemblyFactoryTest.cs)	(revision 450fdfb2f034723cf74dc02d58cc1d9248f414a4)
@@ -121,6 +121,7 @@
             sectionResult.RefinedSectionProbability = random.NextDouble();
 
             var assessmentSection = new AssessmentSectionStub();
+            
             using (new AssemblyToolCalculatorFactoryConfig())
             {
                 var calculatorFactory = (TestAssemblyToolCalculatorFactory) AssemblyToolCalculatorFactory.Instance;