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DoubleToleranceConstraint.cs 3.2 KB

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  1. /*
  2. * Copyright (c) Contributors, http://opensimulator.org/
  3. * See CONTRIBUTORS.TXT for a full list of copyright holders.
  4. *
  5. * Redistribution and use in source and binary forms, with or without
  6. * modification, are permitted provided that the following conditions are met:
  7. * * Redistributions of source code must retain the above copyright
  8. * notice, this list of conditions and the following disclaimer.
  9. * * Redistributions in binary form must reproduce the above copyright
  10. * notice, this list of conditions and the following disclaimer in the
  11. * documentation and/or other materials provided with the distribution.
  12. * * Neither the name of the OpenSimulator Project nor the
  13. * names of its contributors may be used to endorse or promote products
  14. * derived from this software without specific prior written permission.
  15. *
  16. * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
  17. * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  18. * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  19. * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
  20. * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  21. * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  22. * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  23. * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  25. * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26. */
  27. using System;
  28. using NUnit.Framework;
  29. using NUnit.Framework.Constraints;
  30. namespace OpenSim.Tests.Common
  31. {
  32. public class DoubleToleranceConstraint : ANumericalToleranceConstraint
  33. {
  34. private double _baseValue;
  35. private double _valueToBeTested;
  36. public DoubleToleranceConstraint(double baseValue, double tolerance) : base(tolerance)
  37. {
  38. _baseValue = baseValue;
  39. }
  40. ///<summary>
  41. ///Test whether the constraint is satisfied by a given value
  42. ///</summary>
  43. ///<param name="valueToBeTested">The value to be tested</param>
  44. ///<returns>
  45. ///True for success, false for failure
  46. ///</returns>
  47. public override bool Matches(object valueToBeTested)
  48. {
  49. if (valueToBeTested == null)
  50. {
  51. throw new ArgumentException("Constraint cannot be used upon null values.");
  52. }
  53. if (valueToBeTested.GetType() != typeof(double))
  54. {
  55. throw new ArgumentException("Constraint cannot be used upon non double-values.");
  56. }
  57. _valueToBeTested = (double)valueToBeTested;
  58. return IsWithinDoubleConstraint(_valueToBeTested, _baseValue);
  59. }
  60. public override void WriteDescriptionTo(MessageWriter writer)
  61. {
  62. writer.WriteExpectedValue(string.Format("A value {0} within tolerance of plus or minus {1}",_baseValue,_tolerance));
  63. }
  64. public override void WriteActualValueTo(MessageWriter writer)
  65. {
  66. writer.WriteActualValue(_valueToBeTested);
  67. }
  68. }
  69. }