public void TestWriteAndFlush()
{
using (TempFile temp = new TempFile())
using (TestStream io = new TestStream(temp.Open()))
using (BackgroundWriter wtr = new BackgroundWriter(io))
{
const int sz = 1000;
const int iter = 10000;
var bytes = new byte[sz];
for (int i = 0; i < iter; i++)
wtr.Write(bytes, 0, sz);
wtr.Flush();
Assert.IsTrue(io.Flushed);
Assert.AreEqual(sz * iter, io.Position);
Assert.AreEqual(sz * iter, io.Length);
}
}
public void TestWriteOffset()
{
using (TestStream io = new TestStream())
using (BackgroundWriter wtr = new BackgroundWriter(io))
{
wtr.Write(new byte[100], 0, 100);
wtr.Write(1, new byte[] { 42 }, 0, 1);
wtr.Flush();
Assert.AreEqual(2, io.Position);
Assert.AreEqual(100, io.Length);
io.Position = 1;
Assert.AreEqual(42, io.ReadByte());
}
}
public void TestPerformAction()
{
using (TestStream io = new TestStream())
using (BackgroundWriter wtr = new BackgroundWriter(io))
{
wtr.Perform(s => s.Write(new byte[100], 0, 100));
wtr.Flush();
Assert.AreEqual(100, io.Position);
Assert.AreEqual(100, io.Length);
}
}
