public void ReadOpensFile()
{
using (var fs = new FileStream(tempFile, FileMode.CreateNew)) {
fs.WriteByte(0x42);
fs.WriteByte(0xAA);
}
using (var stream = new LazyFileStream(tempFile, FileOpenMode.Read)) {
Assert.That(stream.BaseStream, Is.Null);
Assert.That(stream.ReadByte(), Is.EqualTo(0x42));
Assert.That(stream.BaseStream, Is.Not.Null);
}
using (var stream = new LazyFileStream(tempFile, FileOpenMode.Read)) {
Assert.That(stream.BaseStream, Is.Null);
byte[] buffer = new byte[2];
stream.Read(buffer, 0, buffer.Length);
Assert.That(buffer[1], Is.EqualTo(0xAA));
Assert.That(stream.BaseStream, Is.Not.Null);
}
}
public void PublicMethodThrowAfterDispose()
{
var stream = new LazyFileStream(tempFile, FileOpenMode.ReadWrite);
stream.Dispose();
byte[] buffer = new byte[1];
Assert.That(
() => stream.SetLength(10),
Throws.InstanceOf <ObjectDisposedException>());
Assert.That(
() => stream.WriteByte(0x00),
Throws.InstanceOf <ObjectDisposedException>());
Assert.That(
() => stream.Write(buffer, 0, 1),
Throws.InstanceOf <ObjectDisposedException>());
Assert.That(
() => stream.ReadByte(),
Throws.InstanceOf <ObjectDisposedException>());
Assert.That(
() => stream.Read(buffer, 0, 1),
Throws.InstanceOf <ObjectDisposedException>());
}