public void Given_first_and_second_set_when_fourth_item_is_artificially_corrupted_and_read_back_then_it_will_throw_on_fourth_iteration()
{
using (var ms = new MemoryStream()) {
ResourceProvider.AppendTo(ms, "First_and_second.e");
ms.Position = 0;
var i = 0;
Action<EventStreamReaderState> corruptor = s => {
if (s == EventStreamReaderState.HeadIndicator)
i++;
if (s == EventStreamReaderState.Hash && i == 4) {
// ReSharper disable AccessToDisposedClosure
ms.Write(new byte[] { 0, 0, 0 }, 0, 3);
ms.Position -= 3;
// ReSharper restore AccessToDisposedClosure
}
};
using (var esr = new EventStreamReader(ms, new NullEventReader(), corruptor, null)) {
// ReSharper disable AccessToDisposedClosure
Assert.DoesNotThrow(() => esr.Next());
Assert.DoesNotThrow(() => esr.Next());
Assert.DoesNotThrow(() => esr.Next());
Assert.Throws<HashVerificationPersistenceException>(() => esr.Next());
// ReSharper restore AccessToDisposedClosure
}
}
}
public void Given_first_and_second_set_when_artificially_truncated_and_read_back_then_it_will_throw_on_second_iteration()
{
using (var ms = new MemoryStream()) {
ResourceProvider.AppendTo(ms, "First_and_second.e", 7 /* magic sauce to truncate by an arbitrary 7 bytes */);
ms.Position = 0;
using (var esr = new EventStreamReader(ms, new NullEventReader())) {
// ReSharper disable AccessToDisposedClosure
Assert.DoesNotThrow(() => esr.Next());
Assert.DoesNotThrow(() => esr.Next());
Assert.DoesNotThrow(() => esr.Next());
Assert.Throws<TruncationVerificationPersistenceException>(() => esr.Next());
// ReSharper restore AccessToDisposedClosure
}
}
}
public void Given_first_set_when_read_back_then_object_model_is_as_expected()
{
using (var ms = new MemoryStream()) {
ResourceProvider.AppendTo(ms, "First.e");
ms.Position = 0;
using (var esr = new EventStreamReader(ms, new NullEventReader())) {
var firstExpected = MockEventStreams.First.ElementAt(0);
var firstActual = esr.Next();
Assert.AreEqual(firstActual.Id, firstExpected.Id);
Assert.AreEqual(firstActual.Timestamp, firstExpected.Timestamp);
Assert.AreEqual(firstActual.Arguments.GetType(), firstExpected.Arguments.GetType());
var secondExpected = MockEventStreams.First.ElementAt(1);
var secondActual = esr.Next();
Assert.AreEqual(secondActual.Id, secondExpected.Id);
Assert.AreEqual(secondActual.Timestamp, secondExpected.Timestamp);
Assert.AreEqual(secondActual.Arguments.GetType(), secondExpected.Arguments.GetType());
}
}
}