From a1625a54104da7872c15618db9e68656c6f6ec2a Mon Sep 17 00:00:00 2001
From: Adam Frisby
Date: Fri, 8 Feb 2008 17:54:30 +0000
Subject: * Applying mantis 339 patches round 2 -- Thanks daedius

---
 OpenSim/Tests/Common/DoubleToleranceConstraint.cs | 52 +++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 OpenSim/Tests/Common/DoubleToleranceConstraint.cs

(limited to 'OpenSim/Tests/Common/DoubleToleranceConstraint.cs')

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);        
+        }
+    }
+}
-- 
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