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IndexableCollectionsTests.cs
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IndexableCollectionsTests.cs
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namespace SimpleInjector.Tests.Unit.Advanced
{
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using Microsoft.VisualStudio.TestTools.UnitTesting;
[TestClass]
public class IndexableCollectionsTests
{
private const string ReadOnlyMessage = "Collection is read-only.";
private static string NotSupportedMessage => new NotSupportedException().Message;
[TestMethod]
public void GetAllInstances_Always_ReturnsAGenericIList()
{
// Arrange
var container = ContainerFactory.New();
container.Collection.Register<IPlugin>(new[] { typeof(Plugin0), typeof(Plugin1), typeof(Plugin2) });
// Act
var plugins = container.GetAllInstances<IPlugin>();
// Assert
AssertThat.IsInstanceOfType(typeof(IList<IPlugin>), plugins);
}
[TestMethod]
public void GetAllInstances_WithValidRegistrations_CanGetTheInstancesByIndex()
{
// Arrange
var container = ContainerFactory.New();
container.Collection.Register<IPlugin>(new[] { typeof(Plugin0), typeof(Plugin1), typeof(Plugin2) });
// Act
var plugins = container.GetAllInstances<IPlugin>() as IList<IPlugin>;
// Assert
AssertThat.IsInstanceOfType(typeof(Plugin0), plugins[0]);
AssertThat.IsInstanceOfType(typeof(Plugin1), plugins[1]);
AssertThat.IsInstanceOfType(typeof(Plugin2), plugins[2]);
}
[TestMethod]
public void Count_CollectionWithTwoElements_Returns2()
{
// Arrange
var container = ContainerFactory.New();
container.Collection.Register<IPlugin>(new[] { typeof(Plugin0), typeof(Plugin1) });
var plugins = container.GetAllInstances<IPlugin>() as IList<IPlugin>;
// Act
var count = plugins.Count;
// Assert
Assert.AreEqual(2, count);
}
[TestMethod]
public void Count_CollectionWithThreeElements_Returns3()
{
// Arrange
var container = ContainerFactory.New();
container.Collection.Register<IPlugin>(new[] { typeof(Plugin0), typeof(Plugin1), typeof(Plugin2) });
var plugins = container.GetAllInstances<IPlugin>() as IList<IPlugin>;
// Act
var count = plugins.Count;
// Assert
Assert.AreEqual(3, count);
}
[TestMethod]
public void GetAllInstances_Always_IsReadOnlyReturnsTrue()
{
// Arrange
var container = ContainerFactory.New();
container.Collection.Register<IPlugin>(new[] { typeof(Plugin0), typeof(Plugin1), typeof(Plugin2) });
// Act
var plugins = container.GetAllInstances<IPlugin>() as IList<IPlugin>;
// Assert
Assert.IsTrue(plugins.IsReadOnly);
}
[TestMethod]
public void SetIndexer_Always_ThrowsNotSupported()
{
// Arrange
var container = ContainerFactory.New();
container.Collection.Register<IPlugin>(new[] { typeof(Plugin0), typeof(Plugin1), typeof(Plugin2) });
var plugins = container.GetAllInstances<IPlugin>() as IList<IPlugin>;
// Act
Action action = () => plugins[0] = new Plugin0();
// Assert
AssertThat.ThrowsWithExceptionMessageContains<NotSupportedException>(ReadOnlyMessage, action);
}
[TestMethod]
public void RemoveAt_Always_ThrowsNotSupported()
{
// Arrange
var container = ContainerFactory.New();
container.Collection.Register<IPlugin>(new[] { typeof(Plugin0), typeof(Plugin1), typeof(Plugin2) });
var plugins = container.GetAllInstances<IPlugin>() as IList<IPlugin>;
// Act
Action action = () => plugins.RemoveAt(0);
// Assert
AssertThat.ThrowsWithExceptionMessageContains<NotSupportedException>(ReadOnlyMessage, action);
}
[TestMethod]
public void Insert_Always_ThrowsNotSupported()
{
// Arrange
var container = ContainerFactory.New();
container.Collection.Register<IPlugin>(new[] { typeof(Plugin0), typeof(Plugin1), typeof(Plugin2) });
var plugins = container.GetAllInstances<IPlugin>() as IList<IPlugin>;
// Act
Action action = () => plugins.Insert(0, new Plugin0());
// Assert
AssertThat.ThrowsWithExceptionMessageContains<NotSupportedException>(ReadOnlyMessage, action);
}
[TestMethod]
public void Add_Always_ThrowsNotSupported()
{
// Arrange
var container = ContainerFactory.New();
container.Collection.Register<IPlugin>(new[] { typeof(Plugin0), typeof(Plugin1), typeof(Plugin2) });
var plugins = container.GetAllInstances<IPlugin>() as IList<IPlugin>;
// Act
Action action = () => plugins.Add(new Plugin0());
// Assert
AssertThat.ThrowsWithExceptionMessageContains<NotSupportedException>(ReadOnlyMessage, action);
}
[TestMethod]
public void Clear_Always_ThrowsNotSupported()
{
// Arrange
var container = ContainerFactory.New();
container.Collection.Register<IPlugin>(new[] { typeof(Plugin0), typeof(Plugin1), typeof(Plugin2) });
var plugins = container.GetAllInstances<IPlugin>() as IList<IPlugin>;
// Act
Action action = () => plugins.Clear();
// Assert
AssertThat.ThrowsWithExceptionMessageContains<NotSupportedException>(ReadOnlyMessage, action);
}
[TestMethod]
public void Remove_Always_ThrowsNotSupported()
{
// Arrange
var container = ContainerFactory.New();
container.Collection.Register<IPlugin>(new[] { typeof(Plugin0), typeof(Plugin1), typeof(Plugin2) });
var plugins = container.GetAllInstances<IPlugin>() as IList<IPlugin>;
// Act
Action action = () => plugins.Remove(null);
// Assert
AssertThat.ThrowsWithExceptionMessageContains<NotSupportedException>(ReadOnlyMessage, action);
}
[TestMethod]
public void IndexOf_Null_ReturnsNegative1()
{
// Arrange
var container = ContainerFactory.New();
container.Collection.Register<IPlugin>(new[] { typeof(Plugin0), typeof(Plugin1), typeof(Plugin2) });
var plugins = container.GetAllInstances<IPlugin>() as IList<IPlugin>;
// Act
int actualIndex = plugins.IndexOf(null);
// Assert
Assert.AreEqual(-1, actualIndex);
}
[TestMethod]
public void GetAllInstances_NonGenericAppendTypeWithLifestyle_RegistersTypeAccordingToExpectedLifestyle()
{
// Arrange
var container = ContainerFactory.New();
container.Collection.Append(typeof(IPlugin), typeof(Plugin0), Lifestyle.Singleton);
container.Collection.Append(typeof(IPlugin), typeof(Plugin1), Lifestyle.Transient);
// Act
var plugins = container.GetAllInstances<IPlugin>();
// Assert
Assert.AreSame(plugins.First(), plugins.First(), "Plugin0 should be Singleton.");
Assert.AreNotSame(plugins.Last(), plugins.Last(), "Plugin1 should be Transient.");
}
[TestMethod]
public void Index_ValuePartOfTheCollection1_ReturnsCorrectIndex()
{
// Arrange
var container = ContainerFactory.New();
container.Collection.Append<IPlugin, Plugin0>(Lifestyle.Singleton);
container.Collection.Append<IPlugin, Plugin1>(Lifestyle.Singleton);
container.Collection.Append<IPlugin, Plugin2>(Lifestyle.Singleton);
var plugins = container.GetAllInstances<IPlugin>() as IList<IPlugin>;
// Act
int actualIndex = plugins.IndexOf(plugins.First());
// Assert
Assert.AreEqual(0, actualIndex);
}
[TestMethod]
public void Index_ValuePartOfTheCollection2_ReturnsCorrectIndex()
{
// Arrange
var container = ContainerFactory.New();
container.Collection.Append<IPlugin, Plugin0>(Lifestyle.Singleton);
container.Collection.Append<IPlugin, Plugin1>(Lifestyle.Singleton);
container.Collection.Append<IPlugin, Plugin2>(Lifestyle.Singleton);
var plugins = container.GetAllInstances<IPlugin>() as IList<IPlugin>;
// Act
int actualIndex = plugins.IndexOf(plugins.Last());
// Assert
Assert.AreEqual(2, actualIndex);
}
[TestMethod]
public void Contains_ValuePartOfTheCollection_ReturnsTrue()
{
// Arrange
var container = ContainerFactory.New();
container.Collection.Append<IPlugin, Plugin0>(Lifestyle.Singleton);
container.Collection.Append<IPlugin, Plugin1>(Lifestyle.Singleton);
container.Collection.Append<IPlugin, Plugin2>(Lifestyle.Singleton);
var plugins = container.GetAllInstances<IPlugin>() as ICollection<IPlugin>;
// Act
var result = plugins.Contains(plugins.Last());
// Assert
Assert.IsTrue(result);
}
[TestMethod]
public void Contains_ValueNotPartOfTheCollection_ReturnsFalse()
{
// Arrange
var container = ContainerFactory.New();
container.Collection.Append<IPlugin, Plugin0>(Lifestyle.Singleton);
container.Collection.Append<IPlugin, Plugin1>(Lifestyle.Singleton);
container.Collection.Append<IPlugin, Plugin2>(Lifestyle.Singleton);
var plugins = container.GetAllInstances<IPlugin>() as ICollection<IPlugin>;
var differentInstance = new Plugin2();
// Act
var result = plugins.Contains(differentInstance);
// Assert
Assert.IsFalse(result);
}
[TestMethod]
public void ToArray_WithValidRegistrations_Succeeds()
{
// Arrange
var container = ContainerFactory.New();
container.Collection.Register<IPlugin>(new[] { typeof(Plugin0), typeof(Plugin1), typeof(Plugin2) });
// Act
var plugins = container.GetAllInstances<IPlugin>().ToArray();
// Assert
AssertThat.IsInstanceOfType(typeof(Plugin0), plugins[0]);
AssertThat.IsInstanceOfType(typeof(Plugin1), plugins[1]);
AssertThat.IsInstanceOfType(typeof(Plugin2), plugins[2]);
}
[TestMethod]
public void CopyTo_WithValidRegistrations_Succeeds()
{
// Arrange
IPlugin[] pluginCopies = new IPlugin[3];
var container = ContainerFactory.New();
container.Collection.Register<IPlugin>(new[] { typeof(Plugin0), typeof(Plugin1), typeof(Plugin2) });
var plugins = container.GetAllInstances<IPlugin>() as ICollection<IPlugin>;
// Act
plugins.CopyTo(pluginCopies, 0);
// Assert
AssertThat.IsInstanceOfType(typeof(Plugin0), pluginCopies[0]);
AssertThat.IsInstanceOfType(typeof(Plugin1), pluginCopies[1]);
AssertThat.IsInstanceOfType(typeof(Plugin2), pluginCopies[2]);
}
[TestMethod]
public void GetAllInstances_ByNonGenericRegistration_CanGetTheInstancesByIndex()
{
// Arrange
var container = ContainerFactory.New();
container.Collection.Register(typeof(IPlugin), new[] { typeof(Plugin0), typeof(Plugin1), typeof(Plugin2) });
// Act
var plugins = container.GetAllInstances<IPlugin>() as IList<IPlugin>;
// Assert
AssertThat.IsInstanceOfType(typeof(Plugin0), plugins[0]);
AssertThat.IsInstanceOfType(typeof(Plugin1), plugins[1]);
AssertThat.IsInstanceOfType(typeof(Plugin2), plugins[2]);
}
[TestMethod]
public void GetAllInstances_Always_CanGetTheInstancesByIndex()
{
// Arrange
var container = ContainerFactory.New();
container.Collection.Register<IPlugin>(new[] { typeof(Plugin0), typeof(Plugin1), typeof(Plugin2) });
container.RegisterDecorator(typeof(IPlugin), typeof(PluginDecorator),
context => context.ImplementationType != typeof(Plugin2));
// Act
var plugins = container.GetAllInstances<IPlugin>() as IList<IPlugin>;
// Assert
AssertThat.IsInstanceOfType(typeof(PluginDecorator), plugins[0]);
AssertThat.IsInstanceOfType(typeof(PluginDecorator), plugins[1]);
AssertThat.IsInstanceOfType(typeof(Plugin2), plugins[2]);
}
[TestMethod]
public void Count_Always_ReturnsTheExpectedNumberOfElements1()
{
// Arrange
var container = ContainerFactory.New();
container.Collection.Register<IPlugin>(new[] { typeof(Plugin0), typeof(Plugin1), typeof(Plugin2) });
container.RegisterDecorator(typeof(IPlugin), typeof(PluginDecorator),
context => context.ImplementationType != typeof(Plugin2));
var plugins = container.GetAllInstances<IPlugin>() as IList<IPlugin>;
// Act
int count = plugins.Count;
// Assert
Assert.AreEqual(3, count);
}
[TestMethod]
public void IEnumerableGetEnumerator_Always_ReturnsACorrectEnumerator()
{
// Arrange
List<object> pluginsCopy = new List<object>();
var container = ContainerFactory.New();
container.Collection.Register<IPlugin>(new[] { typeof(Plugin0), typeof(Plugin1), typeof(Plugin2) });
var plugins = (IEnumerable)container.GetAllInstances<IPlugin>();
// Act
foreach (var plugin in plugins)
{
pluginsCopy.Add(plugin);
}
// Assert
AssertThat.IsInstanceOfType(typeof(Plugin0), pluginsCopy[0]);
AssertThat.IsInstanceOfType(typeof(Plugin1), pluginsCopy[1]);
AssertThat.IsInstanceOfType(typeof(Plugin2), pluginsCopy[2]);
}
public class Plugin0 : IPlugin
{
}
public class Plugin1 : IPlugin
{
}
public class Plugin2 : IPlugin
{
}
}
}