GraemeF

System.IndexOutOfRangeException was unhandled
  Message=Probable I/O race condition detected while copying memory. The I/O package is not thread safe by default. In multithreaded applications, a stream must be accessed in a thread-safe way, such as a thread-safe wrapper returned by TextReader's or TextWriter's Synchronized methods. This also applies to classes like StreamWriter and StreamReader.
  Source=System.CoreEx
  StackTrace:
    Server stack trace: 
       at System.Buffer.InternalBlockCopy(Array src, Int32 srcOffsetBytes, Array dst, Int32 dstOffsetBytes, Int32 byteCount)
       at System.IO.StreamWriter.Write(Char[] buffer, Int32 index, Int32 count)
       at System.IO.TextWriter.WriteLine(String value)
       at System.IO.TextWriter.SyncTextWriter.WriteLine(String value)
       at System.Console.WriteLine(String value)

GraemeF

        private static void UpdatePropertyValue<T, TValue>(Expression<Func<T, TValue>> property, T fake, TValue newValue) where T : class
        {
            property.Compile()(fake).Returns(newValue);
        }

GraemeF

namespace Stuff
{
    #region Using Directives

    using System;
    using System.Collections.Generic;
    using System.ComponentModel;
    using System.Linq.Expressions;

    using Moq;

GraemeF

[Fact]
public void Offset_WhenLogOffsetChanges_RaisesPropertyChanged()
{
    LogPresenter test = BuildTestSubject();

    test.Initialize();

    test.AssertThatChangeNotificationIsRaisedBy(x => x.Offset).
        When(() => _log.PropertyChanged += Raise.With(new PropertyChangedEventArgs("Offset")).Now);
}

GraemeF

[Fact]
public void Offset_WhenLogOffsetChanges_RaisesPropertyChanged()
{
    LogPresenter test = BuildTestSubject();

    test.Initialize();

    test.AssertThatChangeNotificationIsRaisedBy(x => x.Offset).
        When(() => _log.PropertyChanged += Raise.Event<PropertyChangedEventHandler>(this, 
                                                                                    new PropertyChangedEventArgs("Offset")));

GraemeF

[Fact]
public void Offset_WhenLogOffsetChanges_RaisesPropertyChanged()
{
    LogPresenter test = BuildTestSubject();

    test.Initialize();

    test.AssertThatChangeNotificationIsRaisedBy(x => x.Offset).
        When(() => Mock.Get(_log).Raise(x => x.PropertyChanged += null, 
                                        new PropertyChangedEventArgs("Offset")));

GraemeF

[Fact]
public void Initialize_Always_InitializesParserPresenter()
{
    LogPresenter test = BuildTestSubject();
    test.Initialize();

    _parserPresenter.Received().Initialize();
}

GraemeF

[Fact]
public void Initialize_Always_InitializesParserPresenter()
{
    LogPresenter test = BuildTestSubject();
    test.Initialize();

    A.CallTo(() => _parserPresenter.Initialize()).MustHaveHappened();
}

GraemeF

[Fact]
public void Initialize_Always_InitializesParserPresenter()
{
    LogPresenter test = BuildTestSubject();
    test.Initialize();

    Mock.Get(_parserPresenter).Verify(x => x.Initialize());
}

GraemeF

public class MyFixture
{
    private readonly ICloseLogFileCommand _closeCommand = A.Fake<ICloseLogFileCommand>();

    private readonly ILog _log = A.Fake<ILog>();

    public MyFixture()
    {
        A.CallTo(() => _log.Name).Returns(@"C:\Path\To\File.log");
        A.CallTo(() => _log.Count).Returns(42);