public void Test()
{
MockRepository mockRepository = new MockRepository();
ILineReader lineReader = mockRepository.DynamicMock<ILineReader>();
lineReader.Stub(r => r.ReadLine()).Callback(new ReadLineDelegate(ReadRecord)).Return(_count < _countOfLines);
lineReader.Stub(r => r.CurrentLine()).Do(new CurrentStringDelegate(ReturnString)).Return(_currentLine);
mockRepository.ReplayAll();
bool read1 = lineReader.ReadLine();
Assert.That(read1, Is.True);
Assert.That(lineReader.CurrentLine(), Is.EqualTo("A"));
bool read2 = lineReader.ReadLine();
Assert.That(read2, Is.True);
Assert.That(lineReader.CurrentLine(), Is.EqualTo("B"));
bool read3 = lineReader.ReadLine();
Assert.That(read3, Is.True);
Assert.That(lineReader.CurrentLine(), Is.EqualTo("C"));
bool read4 = lineReader.ReadLine();
Assert.That(read4, Is.False);
Assert.That(lineReader.CurrentLine(), Is.Null);
}