SimpleInstantiationStrategyTests.cs :  » Inversion-of-Control-Dependency-Injection » Spring.net » Spring » Objects » Factory » Support » C# / CSharp Open Source

#region License

/*
 * Copyright 2004 the original author or authors.
 *
 * 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.
 */

#endregion

#region Imports

using System;
using NUnit.Framework;
using Spring.Objects.Factory.Config;

#endregion

namespace Spring.Objects.Factory.Support{
  /// <summary>
  /// Unit tests for the SimpleInstantiationStrategy class.
  /// </summary>
  /// <author>Rick Evans</author>
  [TestFixture]
  public sealed class SimpleInstantiationStrategyTests
  {
    #region SetUp

    /// <summary>
    /// The setup logic executed before the execution of each individual test.
    /// </summary>
    [SetUp]
    public void SetUp()
    {
      _singletonDefinition = new RootObjectDefinition(typeof (TestObject), AutoWiringMode.No);
      _singletonDefinitionWithFactory = new RootObjectDefinition(_singletonDefinition);
      _singletonDefinitionWithFactory.FactoryMethodName = "GetObject";
      _singletonDefinitionWithFactory.FactoryObjectName = "TestObjectFactoryDefinition";
      _testObjectFactory = new RootObjectDefinition(typeof (TestObjectFactory), AutoWiringMode.No);
      DefaultListableObjectFactory myFactory = new DefaultListableObjectFactory();
      myFactory.RegisterObjectDefinition("SingletonObjectDefinition", SingletonDefinition);
      myFactory.RegisterObjectDefinition("SingletonDefinitionWithFactory", SingletonDefinitionWithFactory);
      myFactory.RegisterObjectDefinition("TestObjectFactoryDefinition", TestObjectFactoryDefinition);
      _factory = myFactory;
    }

    #endregion

    [Test]
    [ExpectedException(typeof (ArgumentNullException))]
    public void InstantiateWithNulls()
    {
      SimpleInstantiationStrategy strategy = new SimpleInstantiationStrategy();
      strategy.Instantiate(null, null, null);
    }

    [Test]
    public void InstantiateWithNullObjectName()
    {
      SimpleInstantiationStrategy strategy = new SimpleInstantiationStrategy();
      object obj = strategy.Instantiate(SingletonDefinition, null, Factory);
      Assert.IsNotNull(obj);
      Assert.IsTrue(obj is ITestObject);
      ITestObject actual = (ITestObject) obj;
      Assert.IsNull(actual.Name);
      Assert.AreEqual(0, actual.Age);
    }

    [Test]
    public void InstantiateWithExplicitCtor()
    {
      SimpleInstantiationStrategy strategy = new SimpleInstantiationStrategy();
      object obj = strategy.Instantiate(
        SingletonDefinition, null, Factory,
        SingletonDefinition.ObjectType.GetConstructor(
          new Type[] {typeof (string), typeof (int)}),
        new object[] {"Rick", 19});
      Assert.IsNotNull(obj);
      Assert.IsTrue(obj is ITestObject);
      ITestObject actual = (ITestObject) obj;
      Assert.AreEqual("Rick", actual.Name);
      Assert.AreEqual(19, actual.Age);
    }

    [Test]
    public void InstantiateWithFactoryMethod()
    {
      SimpleInstantiationStrategy strategy = new SimpleInstantiationStrategy();
      object obj = strategy.Instantiate(SingletonDefinitionWithFactory,
        string.Empty, Factory, typeof (TestObjectFactory).GetMethod("GetObject"), null);
      Assert.IsNotNull(obj);
      Assert.IsTrue(obj is ITestObject);
      ITestObject actual = (ITestObject) obj;
      Assert.AreEqual(TestObjectFactory.TheName, actual.Name);
      Assert.AreEqual(TestObjectFactory.TheAge, actual.Age);
    }

    [Test]
    public void InstantiateWithDefinitionThatDoesNotHaveAResolvedObjectClass()
    {
      RootObjectDefinition def = new RootObjectDefinition();
      def.ObjectTypeName = typeof(TestObject).FullName;

      SimpleInstantiationStrategy strategy = new SimpleInstantiationStrategy();
      object foo = strategy.Instantiate(def, "foo", Factory);
      Assert.IsNotNull(foo);
      Assert.AreEqual(typeof(TestObject), foo.GetType());
    }

    private RootObjectDefinition SingletonDefinition
    {
      get { return _singletonDefinition; }
    }

    private RootObjectDefinition SingletonDefinitionWithFactory
    {
      get { return _singletonDefinitionWithFactory; }
    }

    private RootObjectDefinition TestObjectFactoryDefinition
    {
      get { return _testObjectFactory; }
    }

    private IObjectFactory Factory
    {
      get { return _factory; }
    }

    private RootObjectDefinition _singletonDefinition;
    private RootObjectDefinition _testObjectFactory;
    private RootObjectDefinition _singletonDefinitionWithFactory;
    private IObjectFactory _factory;
  }

  public class TestObjectFactory
  {
    public const string TheName = "Old Goriot";
    public const int TheAge = 78;

    public virtual object GetObject()
    {
      return new TestObject(TheName, TheAge);
    }
  }
}