1 files changed, 52 insertions, 0 deletions

diff --git a/OpenSim/Tests/Common/DoubleToleranceConstraint.cs b/OpenSim/Tests/Common/DoubleToleranceConstraint.cs
new file mode 100644
index 0000000..f3da236
--- /dev/null
+++ b/OpenSim/Tests/Common/DoubleToleranceConstraint.cs
@@ -0,0 +1,52 @@
+using System;

+using NUnit.Framework;

+using NUnit.Framework.Constraints;

+using OpenSim.Tests.Common;

+

+namespace OpenSim.Tests.Common

+{

+    public class DoubleToleranceConstraint : ANumericalToleranceConstraint

+    {

+

+        private double _baseValue;

+        private double _valueToBeTested;

+

+        public DoubleToleranceConstraint(double baseValue, double tolerance) : base(tolerance)

+        {

+            _baseValue = baseValue;

+        }

+        

+        ///<summary>

+        ///Test whether the constraint is satisfied by a given value            

+        ///</summary>

+        ///<param name="valueToBeTested">The value to be tested</param>

+        ///<returns>

+        ///True for success, false for failure

+        ///</returns>

+        public override bool Matches(object valueToBeTested)

+        {

+            if (valueToBeTested == null)

+            {

+                throw new ArgumentException("Constraint cannot be used upon null values.");

+            }

+            if( valueToBeTested.GetType() != typeof(double))

+            {

+                throw new ArgumentException("Constraint cannot be used upon non double-values.");

+            }

+

+            _valueToBeTested = (double)valueToBeTested;

+

+            return IsWithinDoubleConstraint(_valueToBeTested, _baseValue );

+        }

+

+        public override void WriteDescriptionTo(MessageWriter writer)

+        {

+            writer.WriteExpectedValue(string.Format("A value {0} within tolerance of plus or minus {1}",_baseValue,_tolerance));

+        }

+

+        public override void WriteActualValueTo(MessageWriter writer)

+        {

+            writer.WriteActualValue(_valueToBeTested);        

+        }

+    }

+}