public void BeginWrite_should_throw_when_subject_is_disposed()
{
var stream = Substitute.For<Stream>();
var subject = new BsonStreamAdapter(stream);
var buffer = new byte[0];
var offset = 1;
var count = 2;
var callback = Substitute.For<AsyncCallback>();
var state = new object();
subject.Dispose();
Action action = () => subject.BeginWrite(buffer, offset, count, callback, state);
action.ShouldThrow<ObjectDisposedException>().And.ObjectName.Should().Be("BsonStreamAdapter");
}
public void BeginWrite_should_call_wrapped_stream()
{
var stream = Substitute.For<Stream>();
var subject = new BsonStreamAdapter(stream);
var buffer = new byte[0];
var offset = 1;
var count = 2;
var callback = Substitute.For<AsyncCallback>();
var state = new object();
var asyncResult = Substitute.For<IAsyncResult>();
stream.BeginWrite(buffer, offset, count, callback, state).Returns(asyncResult);
var result = subject.BeginWrite(buffer, offset, count, callback, state);
result.Should().Be(asyncResult);
stream.Received(1).BeginWrite(buffer, offset, count, callback, state);
}
public void BeginWrite_should_call_wrapped_stream()
{
var mockStream = new Mock<Stream>();
var subject = new BsonStreamAdapter(mockStream.Object);
var buffer = new byte[0];
var offset = 1;
var count = 2;
var mockCallback = new Mock<AsyncCallback>();
var state = new object();
var mockAsyncResult = new Mock<IAsyncResult>();
mockStream.Setup(s => s.BeginWrite(buffer, offset, count, mockCallback.Object, state)).Returns(mockAsyncResult.Object);
var result = subject.BeginWrite(buffer, offset, count, mockCallback.Object, state);
result.Should().BeSameAs(mockAsyncResult.Object);
mockStream.Verify(s => s.BeginWrite(buffer, offset, count, mockCallback.Object, state), Times.Once);
}