protected long AssertCompress(string fileName, bool resultIsSmaller, Func <string, bool> action)
{
using (TemporaryFile tempFile = new TemporaryFile(fileName))
{
long before = tempFile.Length;
bool result = action(tempFile.FullName);
tempFile.Refresh();
long after = tempFile.Length;
Assert.AreEqual(resultIsSmaller, result);
if (resultIsSmaller)
{
Assert.IsTrue(after < before, "{0} is not smaller than {1}", after, before);
}
else
{
Assert.AreEqual(before, after);
}
return(after);
}
}