Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Plugin.Test/TreeNodeInfos/MacroStabilityInwardsCalculationGroupContextTreeNodeInfoTest.cs
===================================================================
diff -u -r6bc9f77c55e1fba2e86203b22778f8a405aee2eb -r0d301f769dc84d57979a55d902c498afe5d93e19
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Plugin.Test/TreeNodeInfos/MacroStabilityInwardsCalculationGroupContextTreeNodeInfoTest.cs	(.../MacroStabilityInwardsCalculationGroupContextTreeNodeInfoTest.cs)	(revision 6bc9f77c55e1fba2e86203b22778f8a405aee2eb)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Plugin.Test/TreeNodeInfos/MacroStabilityInwardsCalculationGroupContextTreeNodeInfoTest.cs	(.../MacroStabilityInwardsCalculationGroupContextTreeNodeInfoTest.cs)	(revision 0d301f769dc84d57979a55d902c498afe5d93e19)
@@ -20,7 +20,6 @@
 // All rights reserved.
 
 using System;
-using System.Collections.Generic;
 using System.Linq;
 using System.Windows.Forms;
 using Core.Common.Base;
@@ -1091,18 +1090,20 @@
                     surfaceLine1,
                     surfaceLine2
                 };
-                failureMechanism.AddSection(new FailureMechanismSection("Section 1", new List<Point2D>
+                FailureMechanismTestHelper.SetSections(failureMechanism, new[]
                 {
-                    new Point2D(0.0, 0.0),
-                    new Point2D(5.0, 0.0)
-                }));
+                    new FailureMechanismSection("Section 1", new[]
+                    {
+                        new Point2D(0.0, 0.0),
+                        new Point2D(5.0, 0.0)
+                    }),
+                    new FailureMechanismSection("Section 2", new[]
+                    {
+                        new Point2D(5.0, 0.0),
+                        new Point2D(10.0, 0.0)
+                    })
+                });
 
-                failureMechanism.AddSection(new FailureMechanismSection("Section 2", new List<Point2D>
-                {
-                    new Point2D(5.0, 0.0),
-                    new Point2D(10.0, 0.0)
-                }));
-
                 var nodeData = new MacroStabilityInwardsCalculationGroupContext(failureMechanism.CalculationsGroup,
                                                                                 null,
                                                                                 surfaceLines,
@@ -1200,18 +1201,20 @@
                     surfaceLine1,
                     surfaceLine2
                 };
-                failureMechanism.AddSection(new FailureMechanismSection("Section 1", new List<Point2D>
+                FailureMechanismTestHelper.SetSections(failureMechanism, new[]
                 {
-                    new Point2D(0.0, 0.0),
-                    new Point2D(5.0, 0.0)
-                }));
+                    new FailureMechanismSection("Section 1", new[]
+                    {
+                        new Point2D(0.0, 0.0),
+                        new Point2D(5.0, 0.0)
+                    }),
+                    new FailureMechanismSection("Section 2", new[]
+                    {
+                        new Point2D(5.0, 0.0),
+                        new Point2D(10.0, 0.0)
+                    })
+                });
 
-                failureMechanism.AddSection(new FailureMechanismSection("Section 2", new List<Point2D>
-                {
-                    new Point2D(5.0, 0.0),
-                    new Point2D(10.0, 0.0)
-                }));
-
                 var nodeData = new MacroStabilityInwardsCalculationGroupContext(group,
                                                                                 null,
                                                                                 surfaceLines,