SerializationTestSupport.cs :  » Business-Application » Quartz-Enterprise-Scheduler » Quartz » Tests » Unit » C# / CSharp Open Source

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C# / CSharp Open Source » Business Application » Quartz Enterprise Scheduler 
Quartz Enterprise Scheduler » Quartz » Tests » Unit » SerializationTestSupport.cs
/* 
 * Copyright 2004-2006 OpenSymphony 
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not 
 * use this file except in compliance with the License. You may obtain a copy 
 * of the License at 
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0 
 *   
 * Unless required by applicable law or agreed to in writing, software 
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 
 * License for the specific language governing permissions and limitations 
 * under the License.
 */

using System;
using System.Diagnostics;
using System.IO;
using System.Reflection;
using System.Runtime.Serialization.Formatters.Binary;

using NUnit.Framework;

namespace Quartz.Tests.Unit{
  /// <summary>
  /// Base class for unit tests that wish to verify 
  /// backwards compatibily of serialization with earlier versions
  /// of Quartz.
  /// </summary>
  public abstract class SerializationTestSupport
  {
    /// <summary>
    /// Get the object to serialize when generating serialized file for future
    /// tests, and against which to validate deserialized object.
    /// </summary>
    /// <returns></returns>
    protected abstract object GetTargetObject();


    /// <summary>
    /// Get the Quartz versions for which we should verify
    /// serialization backwards compatibility.
    /// </summary>
    /// <returns></returns>
    protected abstract string[] GetVersions();

    /// <summary>
    /// Verify that the target object and the object we just deserialized 
    /// match.
    /// </summary>
    /// <param name="target"></param>
    /// <param name="deserialized"></param>
    protected abstract void VerifyMatch(object target, object deserialized);


    /// <summary>
    /// Test that we can successfully deserialize our target
    /// class for all of the given Quartz versions. 
    /// </summary>
    [Test]
        [Ignore("Currently no working implementation for serialization testing")]
    public void TestSerialization()
    {
      object targetObject = GetTargetObject();

      for (int i = 0; i < GetVersions().Length; i++)
      {
        string version = GetVersions()[i];

        VerifyMatch(targetObject, Deserialize(version, targetObject.GetType()));
      }
    }

    /// <summary>
    ///  Deserialize the target object from disk.
    /// </summary>
    /// <param name="version"></param>
    /// <param name="type"></param>
    /// <returns></returns>
    protected object Deserialize(string version, Type type)
    {
      // should load from assembly
            Stream s = GetType().Assembly.GetManifestResourceStream("SQM.Tests.Unit." + GetSerializedFileName(version, type));
            Assert.IsNotNull(s, string.Format("Could not load serialized object data for version {0} of type {1}", version, type));
      using (s)
      {
        BinaryFormatter bf = new BinaryFormatter();
        return bf.Deserialize(s);
      }
    }

    /// <summary>
    /// Use this method in the future to generate other versions of
    /// of the serialized object file.
    /// </summary>
    [Test]
    public void WriteJobDataFile()
    {
        Assembly asm = Assembly.GetExecutingAssembly();
        FileVersionInfo info = FileVersionInfo.GetVersionInfo(asm.Location);

        string version = info.FileVersion;
      object obj = GetTargetObject();

      string fileName = GetSerializedFileName(version, obj.GetType());
      using (FileStream fs = new FileStream(fileName, FileMode.Create))
      {
        BinaryFormatter bf = new BinaryFormatter();
        bf.Serialize(fs, obj);
      }
    }


    /// <summary>
    /// Generate the expected name of the serialized object file.
    /// </summary>
    /// <param name="version"></param>
    /// <param name="type"></param>
    /// <returns></returns>
    private static string GetSerializedFileName(string version, Type type)
    {
      string className = type.Name;
      int index = className.LastIndexOf(".");
      index = (index < 0) ? 0 : index + 1;

      return string.Format("{0}-{1}.ser", className.Substring(index), version);
    }
  }
}
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