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>());
}
public void WriteOpensFile()
{
using (var stream = new LazyFileStream(tempFile, FileOpenMode.Write)) {
Assert.That(stream.BaseStream, Is.Null);
stream.WriteByte(0x42);
Assert.That(stream.BaseStream, Is.Not.Null);
}
using (var fs = new FileStream(tempFile, FileMode.Open)) {
Assert.That(fs.ReadByte(), Is.EqualTo(0x42));
}
using (var stream = new LazyFileStream(tempFile, FileOpenMode.Append)) {
stream.Position = 1;
Assert.That(stream.BaseStream, Is.Null);
stream.Write(new byte[] { 0xAA, 0xBB }, 1, 1);
Assert.That(stream.BaseStream, Is.Not.Null);
}
using (var fs = new FileStream(tempFile, FileMode.Open)) {
Assert.That(fs.ReadByte(), Is.EqualTo(0x42));
Assert.That(fs.ReadByte(), Is.EqualTo(0xBB));
}
}