public void TestLogCorruption()
{
using (TempFile tmp = new TempFile())
{
using (var log = new TransactionLog<int, string>(Options(tmp)))
{
var token = log.BeginTransaction();
log.AddValue(ref token, 1, Guid.NewGuid().ToString());
log.CommitTransaction(ref token);
var test = new Dictionary<int, string>();
long offset = 0;
log.ReplayLog(test, ref offset);
Assert.AreEqual(1, test.Count);
}
byte[] bytes = tmp.ReadAllBytes();
var TestVariants =
new Converter<KeyValuePair<int, byte[]>, byte[]>[]
{
kv => { kv.Value[kv.Key] ^= 0xff; return kv.Value; },
kv => { kv.Value[kv.Key] = 0xff; return kv.Value; },
kv => { byte[] b = kv.Value; Array.Resize(ref b, kv.Key); return b; },
};
for (int corruptionIx = 0; corruptionIx < bytes.Length; corruptionIx++)
{
foreach (var testcase in TestVariants)
{
byte[] corrupt = testcase(new KeyValuePair<int, byte[]>(corruptionIx, (byte[]) bytes.Clone()));
tmp.WriteAllBytes(corrupt);
using (var log = new TransactionLog<int, string>(Options(tmp)))
{
var test = new Dictionary<int, string>();
log.ReplayLog(test);
Assert.AreEqual(0, test.Count);
}
Assert.IsFalse(File.Exists(tmp.TempPath));
}
}
}
}
public void TestReadWrite()
{
string test = "Hello World!\u1255";
TempFile file = new TempFile();
File.WriteAllBytes(file.TempPath, Encoding.UTF8.GetBytes(test));
Assert.AreEqual(Encoding.UTF8.GetBytes(test), file.ReadAllBytes());
Assert.AreEqual(test, file.ReadAllText());
file.Delete();
Assert.IsFalse(File.Exists(file.TempPath));
Assert.IsFalse(file.Exists);
file.WriteAllBytes(Encoding.UTF8.GetBytes(test));
Assert.AreEqual(test, file.ReadAllText());
file.Delete();
Assert.IsFalse(File.Exists(file.TempPath));
Assert.IsFalse(file.Exists);
file.WriteAllText(test);
Assert.AreEqual(test, file.ReadAllText());
}