Tests of crack calculator were added

StructureHelperLogics/NdmCalculations/Cracking/IRebarCrackInputData.cs

@@ -0,0 +1,29 @@
+using LoaderCalculator.Data.Ndms;
+using StructureHelperCommon.Models.Calculators;
+using StructureHelperCommon.Models.Forces;
+
+namespace StructureHelperLogics.NdmCalculations.Cracking
+{
+    /// <summary>
+    /// Input data for calculating of width of crack by ndm collection
+    /// </summary>
+    public interface IRebarCrackInputData : IInputData
+    {
+        /// <summary>
+        /// Collection of ndms where work of crackable material in tension was assigned according to material properties
+        /// </summary>
+        IEnumerable<INdm> CrackableNdmCollection { get; set; }
+        /// <summary>
+        /// Collection of ndms where work of concrete is disabled
+        /// </summary>
+        IEnumerable<INdm> CrackedNdmCollection { get; set; }
+        /// <summary>
+        /// Force tuple for calculation
+        /// </summary>
+        ForceTuple ForceTuple { get; set; }
+        /// <summary>
+        /// Base length beetwen cracks
+        /// </summary>
+        double LengthBeetwenCracks { get; set; }
+    }
+}