public void ReadASingleEvent()
{
var eventStreamId =
new Guid("A0E50259-7345-48F9-84B4-BEEB5CEC662C");
using (var storage = new AtomEventsInMemory())
{
var pageSize = 25;
var serializer = DataContractContentSerializer.Scan(
typeof(UserCreated).Assembly);
var obs = new AtomEventObserver <object>(
eventStreamId,
pageSize,
storage,
serializer);
var userCreated = new UserCreated
{
UserId = eventStreamId,
UserName = "******",
Password = "******",
Email = "*****@*****.**"
};
obs.OnNext(userCreated);
IEnumerable <object> events = new FifoEvents <object>(
eventStreamId, // a Guid
storage, // an IAtomEventStorage object
serializer); // an IContentSerializer object
var firstEvent = events.First();
var uc = Assert.IsAssignableFrom <UserCreated>(firstEvent);
Assert.Equal(userCreated, uc, new SemanticComparer <UserCreated>());
}
}
public void WriteMoreThanPageSizeEventsWritesInCorrectOrder(
AtomEventWriteUsage usage,
[Frozen(As = typeof(ITypeResolver))] TestEventTypeResolver dummyResolver,
[Frozen(As = typeof(IContentSerializer))] XmlContentSerializer dummySerializer,
[Frozen(As = typeof(IAtomEventStorage))] SpyAtomEventStore spyStore,
AtomEventWriterFactory <XmlAttributedTestEventX> writerFactory,
AtomEventObserver <XmlAttributedTestEventX> sut,
Generator <XmlAttributedTestEventX> eventGenerator)
{
var events = eventGenerator.Take(sut.PageSize + 1).ToList();
var writer = writerFactory.Create(usage);
events.ForEach(e => writer.WriteTo(sut, e));
var writtenFeeds = spyStore.Feeds.Select(ParseAtomFeed);
var firstPage = FindFirstPage(writtenFeeds, sut.Id);
var nextPage = FindNextPage(firstPage, writtenFeeds);
var expected = new[] { nextPage.Id, firstPage.Id, sut.Id };
var actual = spyStore
.ObservedArguments
.OfType <AtomFeed>()
.Select(f => f.Id)
.Reverse()
.Take(3)
.Reverse();
Assert.Equal(expected, actual);
}
public void WriteMoreThanPageSizeEventsAddsNextPageWithPreviousLink(
AtomEventWriteUsage usage,
[Frozen(As = typeof(ITypeResolver))] TestEventTypeResolver dummyResolver,
[Frozen(As = typeof(IContentSerializer))] XmlContentSerializer dummySerializer,
[Frozen(As = typeof(IAtomEventStorage))] AtomEventsInMemory storage,
AtomEventWriterFactory <XmlAttributedTestEventX> writerFactory,
AtomEventObserver <XmlAttributedTestEventX> sut,
Generator <XmlAttributedTestEventX> eventGenerator)
{
var events = eventGenerator.Take(sut.PageSize + 1).ToList();
var writer = writerFactory.Create(usage);
events.ForEach(e => writer.WriteTo(sut, e));
var writtenFeeds = storage.Feeds.Select(ParseAtomFeed);
var firstPage = FindFirstPage(writtenFeeds, sut.Id);
var nextPage = FindNextPage(firstPage, writtenFeeds);
var previousLink =
nextPage.Links.SingleOrDefault(l => l.IsPreviousLink);
Assert.NotNull(previousLink);
Assert.Equal(
firstPage.Links.Single(l => l.IsSelfLink).Href,
previousLink.Href);
}
public async Task WriteASingleEventAsynchronously()
{
var eventStreamId =
new Guid("A0E50259-7345-48F9-84B4-BEEB5CEC662C");
using (var storage = new AtomEventsInMemory())
{
var pageSize = 25;
var serializer = DataContractContentSerializer.Scan(
typeof(UserCreated).Assembly);
var obs = new AtomEventObserver<object>(
eventStreamId, // a Guid
pageSize, // an Int32
storage, // an IAtomEventStorage object
serializer); // an IContentSerializer object
var userCreated = new UserCreated
{
UserId = eventStreamId,
UserName = "******",
Password = "******",
Email = "*****@*****.**"
};
await obs.AppendAsync(userCreated);
Assert.NotEmpty(storage);
}
}
public void WriteMoreThanTwicePageSizeCorrectlyStoresOverflowingEvent(
AtomEventWriteUsage usage,
[Frozen(As = typeof(ITypeResolver))] TestEventTypeResolver dummyResolver,
[Frozen(As = typeof(IContentSerializer))] XmlContentSerializer dummySerializer,
[Frozen(As = typeof(IAtomEventStorage))] AtomEventsInMemory storage,
AtomEventWriterFactory <XmlAttributedTestEventX> writerFactory,
AtomEventObserver <XmlAttributedTestEventX> sut,
Generator <XmlAttributedTestEventX> eventGenerator)
{
var before = DateTimeOffset.Now;
var events = eventGenerator.Take(sut.PageSize * 2 + 1).ToList();
var writer = writerFactory.Create(usage);
events.ForEach(e => writer.WriteTo(sut, e));
var writtenFeeds = storage.Feeds.Select(ParseAtomFeed);
var firstPage = FindFirstPage(writtenFeeds, sut.Id);
var nextPage = FindNextPage(firstPage, writtenFeeds);
nextPage = FindNextPage(nextPage, writtenFeeds);
var expectedPage = new AtomFeedLikeness(
before,
nextPage.Id,
events.AsEnumerable().Reverse().First());
Assert.True(
expectedPage.Equals(nextPage),
"Expected feed must match actual feed.");
}
public void ReadASingleEvent()
{
var eventStreamId =
new Guid("A0E50259-7345-48F9-84B4-BEEB5CEC662C");
using (var storage = new AtomEventsInMemory())
{
var pageSize = 25;
var serializer = DataContractContentSerializer.Scan(
typeof(UserCreated).Assembly);
var obs = new AtomEventObserver<object>(
eventStreamId,
pageSize,
storage,
serializer);
var userCreated = new UserCreated
{
UserId = eventStreamId,
UserName = "******",
Password = "******",
Email = "*****@*****.**"
};
obs.OnNext(userCreated);
IEnumerable<object> events = new FifoEvents<object>(
eventStreamId, // a Guid
storage, // an IAtomEventStorage object
serializer); // an IContentSerializer object
var firstEvent = events.First();
var uc = Assert.IsAssignableFrom<UserCreated>(firstEvent);
Assert.Equal(userCreated, uc, new SemanticComparer<UserCreated>());
}
}
public async Task WriteASingleEventAsynchronously()
{
var eventStreamId =
new Guid("A0E50259-7345-48F9-84B4-BEEB5CEC662C");
using (var storage = new AtomEventsInMemory())
{
var pageSize = 25;
var serializer = DataContractContentSerializer.Scan(
typeof(UserCreated).Assembly);
var obs = new AtomEventObserver <IUserEvent>(
eventStreamId, // a Guid
pageSize, // an Int32
storage, // an IAtomEventStorage object
serializer); // an IContentSerializer object
var userCreated = new UserCreated
{
UserId = eventStreamId,
UserName = "******",
Password = "******",
Email = "*****@*****.**"
};
await obs.AppendAsync(userCreated);
Assert.NotEmpty(storage);
}
}
public void WriteMoreThanPageSizeEventsCorrectlyUpdatesLastLink(
AtomEventWriteUsage usage,
[Frozen(As = typeof(ITypeResolver))] TestEventTypeResolver dummyResolver,
[Frozen(As = typeof(IContentSerializer))] XmlContentSerializer dummySerializer,
[Frozen(As = typeof(IAtomEventStorage))] AtomEventsInMemory storage,
AtomEventWriterFactory <XmlAttributedTestEventX> writerFactory,
AtomEventObserver <XmlAttributedTestEventX> sut,
Generator <XmlAttributedTestEventX> eventGenerator)
{
var before = DateTimeOffset.Now;
var events = eventGenerator.Take(sut.PageSize + 1).ToList();
var writer = writerFactory.Create(usage);
events.ForEach(e => writer.WriteTo(sut, e));
var writtenFeeds = storage.Feeds.Select(ParseAtomFeed);
var index = FindIndex(writtenFeeds, sut.Id);
var lastLink = index.Links.SingleOrDefault(l => l.IsLastLink);
Assert.NotNull(lastLink);
var firstPage = FindFirstPage(writtenFeeds, sut.Id);
var nextPage = FindNextPage(firstPage, writtenFeeds);
var expected = nextPage.Links.SingleOrDefault(l => l.IsSelfLink);
Assert.NotNull(expected);
Assert.Equal(expected.Href, lastLink.Href);
}
public void WritePageSizeEventsStoresAllEntriesInFirstPage(
AtomEventWriteUsage usage,
[Frozen(As = typeof(ITypeResolver))] TestEventTypeResolver dummyResolver,
[Frozen(As = typeof(IContentSerializer))] XmlContentSerializer dummySerializer,
[Frozen(As = typeof(IAtomEventStorage))] AtomEventsInMemory storage,
AtomEventWriterFactory <XmlAttributedTestEventX> writerFactory,
AtomEventObserver <XmlAttributedTestEventX> sut,
Generator <XmlAttributedTestEventX> eventGenerator)
{
var before = DateTimeOffset.Now;
var events = eventGenerator.Take(sut.PageSize).ToList();
var writer = writerFactory.Create(usage);
events.ForEach(e => writer.WriteTo(sut, e));
var writtenFeeds = storage.Feeds.Select(ParseAtomFeed);
var actual = FindFirstPage(writtenFeeds, sut.Id);
var expectedFeed = new AtomFeedLikeness(
before,
actual.Id,
events.AsEnumerable().Reverse().ToArray());
Assert.True(
expectedFeed.Equals(actual),
"Expected feed must match actual feed.");
}
public void WriteFirstEventFailsIfWritingIndexFails(
AtomEventWriteUsage usage,
[Frozen(As = typeof(ITypeResolver))] TestEventTypeResolver dummyResolver,
[Frozen(As = typeof(IContentSerializer))] XmlContentSerializer dummySerializer,
[Frozen] Mock <IAtomEventStorage> storeStub,
AtomEventsInMemory innerStorage,
AtomEventWriterFactory <XmlAttributedTestEventX> writerFactory,
AtomEventObserver <XmlAttributedTestEventX> sut,
XmlAttributedTestEventX @event)
{
storeStub
.Setup(s => s.CreateFeedReaderFor(It.IsAny <Uri>()))
.Returns((Uri u) => innerStorage.CreateFeedReaderFor(u));
storeStub
.Setup(s => s.CreateFeedWriterFor(
It.Is <AtomFeed>(f => f.Id != sut.Id)))
.Returns((AtomFeed f) => innerStorage.CreateFeedWriterFor(f));
var expected = new Exception("On-purpose write failure.");
storeStub
.Setup(s => s.CreateFeedWriterFor(
It.Is <AtomFeed>(f => f.Id == sut.Id)))
.Throws(expected);
var ae = Assert.Throws <AggregateException>(() =>
writerFactory.Create(usage).WriteTo(sut, @event));
Assert.True(
ae.InnerExceptions.Any(expected.Equals),
"Expected exception not thrown.");
}
public void ReadMultipleEvents()
{
var eventStreamId =
new Guid("A0E50259-7345-48F9-84B4-BEEB5CEC662C");
using (var storage = new AtomEventsInMemory())
{
var pageSize = 25;
var serializer =
new DataContractContentSerializer(
new TypeResolutionTable(
new TypeResolutionEntry(
"urn:grean:samples:user-sign-up",
"user-created",
typeof(UserCreated)),
new TypeResolutionEntry(
"urn:grean:samples:user-sign-up",
"email-verified",
typeof(EmailVerified)),
new TypeResolutionEntry(
"urn:grean:samples:user-sign-up",
"email-changed",
typeof(EmailChanged))));
var obs = new AtomEventObserver <IUserEvent>(
eventStreamId,
pageSize,
storage,
serializer);
obs.OnNext(new UserCreated
{
UserId = eventStreamId,
UserName = "******",
Password = "******",
Email = "*****@*****.**"
});
obs.OnNext(new EmailVerified
{
UserId = eventStreamId,
Email = "*****@*****.**"
});
obs.OnNext(new EmailChanged
{
UserId = eventStreamId,
NewEmail = "*****@*****.**"
});
var events = new FifoEvents <IUserEvent>(
eventStreamId, // a Guid
storage, // an IAtomEventStorage object
serializer); // an IContentSerializer object
var user = User.Fold(events);
Assert.Equal(eventStreamId, user.Id);
Assert.Equal("ploeh", user.Name);
Assert.Equal("12345", user.Password);
Assert.Equal("*****@*****.**", user.Email);
Assert.False(user.EmailVerified);
}
}
public void PublishMessage(DomainEvent thingToPublish)
{
var obs = new AtomEventObserver<DomainEvent>(
Guid.NewGuid(),
400,
new AtomEventsInMemory(),
new DataContractContentSerializer(new TypeResolutionTable(new List<TypeResolutionEntry>())));
obs.AppendAsync(thingToPublish);
}
public void PublishMessage(DomainEvent thingToPublish)
{
var obs = new AtomEventObserver <DomainEvent>(
Guid.NewGuid(),
400,
new AtomEventsInMemory(),
new DataContractContentSerializer(new TypeResolutionTable(new List <TypeResolutionEntry>())));
obs.AppendAsync(thingToPublish);
}
public void WriteASingleEventSynchronously()
{
var eventStreamId =
new Guid("A0E50259-7345-48F9-84B4-BEEB5CEC662C");
/* Uses file storage to provide a documentation example of how to
* do that. */
var directory =
new DirectoryInfo(
Path.Combine(
Environment.CurrentDirectory,
Guid.NewGuid().ToString("N")));
try
{
var storage = new AtomEventsInFiles(directory);
var pageSize = 25;
var serializer =
new DataContractContentSerializer(
new TypeResolutionTable(
new TypeResolutionEntry(
"urn:grean:samples:user-sign-up",
"user-created",
typeof(UserCreated)),
new TypeResolutionEntry(
"urn:grean:samples:user-sign-up",
"email-verified",
typeof(EmailVerified)),
new TypeResolutionEntry(
"urn:grean:samples:user-sign-up",
"email-changed",
typeof(EmailChanged))));
IObserver <IUserEvent> obs = new AtomEventObserver <IUserEvent>(
eventStreamId, // a Guid
pageSize, // an Int32
storage, // an IAtomEventStorage object
serializer); // an IContentSerializer object
var userCreated = new UserCreated
{
UserId = eventStreamId,
UserName = "******",
Password = "******",
Email = "*****@*****.**"
};
obs.OnNext(userCreated);
Assert.NotEmpty(storage);
}
finally
{
directory.Delete(recursive: true);
}
}
public void WriteWritesEventToCorrectPageEvenIfLastLinkIsNotUpToDate(
AtomEventWriteUsage usage,
[Frozen(As = typeof(ITypeResolver))] TestEventTypeResolver dummyResolver,
[Frozen(As = typeof(IContentSerializer))] XmlContentSerializer dummySerializer,
[Frozen(As = typeof(IAtomEventStorage))] AtomEventsInMemory storage,
AtomEventWriterFactory <XmlAttributedTestEventX> writerFactory,
AtomEventObserver <XmlAttributedTestEventX> sut,
Generator <XmlAttributedTestEventX> eventGenerator)
{
// Fixture setup
var writer = writerFactory.Create(usage);
var events = eventGenerator.Take(sut.PageSize * 2 + 1).ToList();
events.ForEach(e => writer.WriteTo(sut, e));
/* Point the 'last' link to the second page, instead of to the last
* page. This simulates that when the true last page was created,
* the index wasn't correctly updated. This could for example
* happen due to a network failure. */
var writtenFeeds = storage.Feeds.Select(ParseAtomFeed);
var index = FindIndex(writtenFeeds, sut.Id);
var firstPage = FindFirstPage(writtenFeeds, sut.Id);
var nextPage = FindNextPage(firstPage, writtenFeeds);
var incorrectLastLink =
nextPage.Links.Single(l => l.IsSelfLink).ToLastLink();
index = index.WithLinks(index.Links
.Where(l => !l.IsLastLink)
.Concat(new[] { incorrectLastLink }));
using (var w = storage.CreateFeedWriterFor(index))
index.WriteTo(w, sut.Serializer);
var expected = eventGenerator.First();
// Exercise system
writer.WriteTo(sut, expected);
// Verify outcome
writtenFeeds = storage.Feeds.Select(ParseAtomFeed);
index = FindIndex(writtenFeeds, sut.Id);
firstPage = FindFirstPage(writtenFeeds, sut.Id);
nextPage = FindNextPage(firstPage, writtenFeeds);
nextPage = FindNextPage(nextPage, writtenFeeds);
Assert.Equal(expected, nextPage.Entries.First().Content.Item);
Assert.Equal(
nextPage.Links.Single(l => l.IsSelfLink).Href,
index.Links.Single(l => l.IsLastLink).Href);
// Teardown
}
public void EnumerationStartsFromMostRecentEventEvenIfLastLinkIsStale(
int pageCount,
int staleCount,
[Frozen(As = typeof(ITypeResolver))] TestEventTypeResolver dummyResolver,
[Frozen(As = typeof(IContentSerializer))] XmlContentSerializer dummySerializer,
[Frozen(As = typeof(IAtomEventStorage))] AtomEventsInMemory storage,
[Frozen] UuidIri id,
LifoEvents <IXmlAttributedTestEvent> sut,
AtomEventObserver <XmlAttributedTestEventX> writer,
Generator <XmlAttributedTestEventX> eventGenerator)
{
// Fixture setup
var events =
eventGenerator.Take(writer.PageSize * pageCount + 1).ToList();
events.ForEach(writer.OnNext);
/* Point the 'last' link to an older page, instead of to the last
* page. This simulates that when the true last page was created,
* the index wasn't correctly updated. This could for example
* happen due to a network failure. */
var writtenFeeds = storage.Feeds.Select(ParseAtomFeed);
var lastPage = FindLastPage(writtenFeeds, id);
var olderPage =
FindPreviousPage(lastPage, writtenFeeds, staleCount);
var staleLastLink =
olderPage.Links.Single(l => l.IsSelfLink).ToLastLink();
var index = FindIndex(writtenFeeds, id);
index = index.WithLinks(index.Links
.Where(l => !l.IsLastLink)
.Concat(new[] { staleLastLink }));
using (var w = storage.CreateFeedWriterFor(index))
index.WriteTo(w, sut.Serializer);
// Exercise system
/* (The method being exercised is actual GetEnumerator and the
* returned implementation of IEnumerator<T>, but ToList or ToArray
* or similar methods triggers that.) */
var actual = sut.ToList();
// Verify outcome
var expected = events.AsEnumerable().Reverse();
Assert.True(
expected.SequenceEqual(actual),
"All written events should be enumerated in correct order.");
}
public void WriteASingleEventSynchronously()
{
var eventStreamId =
new Guid("A0E50259-7345-48F9-84B4-BEEB5CEC662C");
/* Uses file storage to provide a documentation example of how to
* do that. */
var directory =
new DirectoryInfo(
Path.Combine(
Environment.CurrentDirectory,
Guid.NewGuid().ToString("N")));
try
{
var storage = new AtomEventsInFiles(directory);
var pageSize = 25;
/* This is an example of using
* DataContractContentSerializer.CreateTypeResolver, so it
* should not be refactored to one of the terser
* alternatives. */
var resolver =
DataContractContentSerializer.CreateTypeResolver(
typeof(UserCreated).Assembly);
var serializer = new DataContractContentSerializer(resolver);
IObserver <IUserEvent> obs = new AtomEventObserver <IUserEvent>(
eventStreamId, // a Guid
pageSize, // an Int32
storage, // an IAtomEventStorage object
serializer); // an IContentSerializer object
var userCreated = new UserCreated
{
UserId = eventStreamId,
UserName = "******",
Password = "******",
Email = "*****@*****.**"
};
obs.OnNext(userCreated);
Assert.NotEmpty(storage);
}
finally
{
directory.Delete(recursive: true);
}
}
public void WriteFirstEventWritesPageBeforeIndex(
AtomEventWriteUsage usage,
[Frozen(As = typeof(ITypeResolver))] TestEventTypeResolver dummyResolver,
[Frozen(As = typeof(IContentSerializer))] XmlContentSerializer dummySerializer,
[Frozen(As = typeof(IAtomEventStorage))] SpyAtomEventStore spyStore,
AtomEventWriterFactory <XmlAttributedTestEventX> writerFactory,
AtomEventObserver <XmlAttributedTestEventX> sut,
XmlAttributedTestEventX @event)
{
writerFactory.Create(usage).WriteTo(sut, @event);
var feed = Assert.IsAssignableFrom <AtomFeed>(
spyStore.ObservedArguments.Last());
Assert.Equal(sut.Id, feed.Id);
}
public void ReadASingleEvent()
{
var eventStreamId =
new Guid("A0E50259-7345-48F9-84B4-BEEB5CEC662C");
using (var storage = new AtomEventsInMemory())
{
var pageSize = 25;
var serializer =
new DataContractContentSerializer(
new TypeResolutionTable(
new TypeResolutionEntry(
"urn:grean:samples:user-on-boarding",
"user-created",
typeof(UserCreated)),
new TypeResolutionEntry(
"urn:grean:samples:user-on-boarding",
"email-verified",
typeof(EmailVerified)),
new TypeResolutionEntry(
"urn:grean:samples:user-on-boarding",
"email-changed",
typeof(EmailChanged))));
var obs = new AtomEventObserver <object>(
eventStreamId,
pageSize,
storage,
serializer);
var userCreated = new UserCreated
{
UserId = eventStreamId,
UserName = "******",
Password = "******",
Email = "*****@*****.**"
};
obs.OnNext(userCreated);
IEnumerable <object> events = new FifoEvents <object>(
eventStreamId, // a Guid
storage, // an IAtomEventStorage object
serializer); // an IContentSerializer object
var firstEvent = events.First();
var uc = Assert.IsAssignableFrom <UserCreated>(firstEvent);
Assert.Equal(userCreated, uc, new SemanticComparer <UserCreated>());
}
}
public void SutCanAppendAndYieldPolymorphicEvents(
[Frozen(As = typeof(ITypeResolver))] TestEventTypeResolver dummyResolver,
[Frozen(As = typeof(IContentSerializer))] XmlContentSerializer dummySerializer,
[Frozen(As = typeof(IAtomEventStorage))] AtomEventsInMemory dummyInjectedIntoSut,
[Frozen] UuidIri dummyId,
AtomEventObserver <IXmlAttributedTestEvent> writer,
LifoEvents <IXmlAttributedTestEvent> sut,
XmlAttributedTestEventX tex,
XmlAttributedTestEventY tey)
{
writer.AppendAsync(tex).Wait();
writer.AppendAsync(tey).Wait();
var expected = new IXmlAttributedTestEvent[] { tey, tex };
Assert.True(expected.SequenceEqual(sut));
}
public void ReadMultipleEvents()
{
var eventStreamId =
new Guid("A0E50259-7345-48F9-84B4-BEEB5CEC662C");
using (var storage = new AtomEventsInMemory())
{
var pageSize = 25;
var serializer = DataContractContentSerializer.Scan(
typeof(UserCreated).Assembly);
var obs = new AtomEventObserver <IUserEvent>(
eventStreamId,
pageSize,
storage,
serializer);
obs.OnNext(new UserCreated
{
UserId = eventStreamId,
UserName = "******",
Password = "******",
Email = "*****@*****.**"
});
obs.OnNext(new EmailVerified
{
UserId = eventStreamId,
Email = "*****@*****.**"
});
obs.OnNext(new EmailChanged
{
UserId = eventStreamId,
NewEmail = "*****@*****.**"
});
var events = new FifoEvents <IUserEvent>(
eventStreamId, // a Guid
storage, // an IAtomEventStorage object
serializer); // an IContentSerializer object
var user = User.Fold(events);
Assert.Equal(eventStreamId, user.Id);
Assert.Equal("ploeh", user.Name);
Assert.Equal("12345", user.Password);
Assert.Equal("*****@*****.**", user.Email);
Assert.False(user.EmailVerified);
}
}
public void WriteASingleEventSynchronously()
{
var eventStreamId =
new Guid("A0E50259-7345-48F9-84B4-BEEB5CEC662C");
/* Uses file storage to provide a documentation example of how to
* do that. */
var directory =
new DirectoryInfo(
Path.Combine(
Environment.CurrentDirectory,
Guid.NewGuid().ToString("N")));
try
{
var storage = new AtomEventsInFiles(directory);
var pageSize = 25;
/* This is an example of using
* DataContractContentSerializer.CreateTypeResolver, so it
* should not be refactored to one of the terser
* alternatives. */
var resolver =
DataContractContentSerializer.CreateTypeResolver(
typeof(UserCreated).Assembly);
var serializer = new DataContractContentSerializer(resolver);
IObserver<IUserEvent> obs = new AtomEventObserver<IUserEvent>(
eventStreamId, // a Guid
pageSize, // an Int32
storage, // an IAtomEventStorage object
serializer); // an IContentSerializer object
var userCreated = new UserCreated
{
UserId = eventStreamId,
UserName = "******",
Password = "******",
Email = "*****@*****.**"
};
obs.OnNext(userCreated);
Assert.NotEmpty(storage);
}
finally
{
directory.Delete(recursive: true);
}
}
public void SutYieldsCorrectEvents(
[Frozen(As = typeof(ITypeResolver))] TestEventTypeResolver dummyResolver,
[Frozen(As = typeof(IContentSerializer))] XmlContentSerializer dummySerializer,
[Frozen(As = typeof(IAtomEventStorage))] AtomEventsInMemory dummyInjectedIntoSut,
[Frozen] UuidIri dummyId,
AtomEventObserver <XmlAttributedTestEventX> writer,
FifoEvents <XmlAttributedTestEventX> sut,
List <XmlAttributedTestEventX> expected)
{
expected.ForEach(e => writer.AppendAsync(e).Wait());
Assert.True(
expected.SequenceEqual(sut),
"Events should be yielded in a FIFO order");
Assert.True(
expected.Cast <object>().SequenceEqual(sut.OfType <object>()),
"Events should be yielded in a FIFO order");
}
public void WriteTwoEventsOnlyWritesIndexOnce(
AtomEventWriteUsage usage,
[Frozen(As = typeof(ITypeResolver))] TestEventTypeResolver dummyResolver,
[Frozen(As = typeof(IContentSerializer))] XmlContentSerializer dummySerializer,
[Frozen(As = typeof(IAtomEventStorage))] SpyAtomEventStore spyStore,
AtomEventWriterFactory <XmlAttributedTestEventX> writerFactory,
AtomEventObserver <XmlAttributedTestEventX> sut,
Generator <XmlAttributedTestEventX> eventGenerator)
{
var events = eventGenerator.Take(2).ToList();
var writer = writerFactory.Create(usage);
events.ForEach(e => writer.WriteTo(sut, e));
var writtenIds = spyStore.ObservedArguments
.OfType <AtomFeed>()
.Select(f => f.Id);
Assert.Equal(1, writtenIds.Count(id => sut.Id == id));
}
public async Task WriteASingleEventAsynchronously()
{
var eventStreamId =
new Guid("A0E50259-7345-48F9-84B4-BEEB5CEC662C");
using (var storage = new AtomEventsInMemory())
{
var pageSize = 25;
var serializer =
new DataContractContentSerializer(
new TypeResolutionTable(
new TypeResolutionEntry(
"urn:grean:samples:user-sign-up",
"user-created",
typeof(UserCreated)),
new TypeResolutionEntry(
"urn:grean:samples:user-sign-up",
"email-verified",
typeof(EmailVerified)),
new TypeResolutionEntry(
"urn:grean:samples:user-sign-up",
"email-changed",
typeof(EmailChanged))));
var obs = new AtomEventObserver <IUserEvent>(
eventStreamId, // a Guid
pageSize, // an Int32
storage, // an IAtomEventStorage object
serializer); // an IContentSerializer object
var userCreated = new UserCreated
{
UserId = eventStreamId,
UserName = "******",
Password = "******",
Email = "*****@*****.**"
};
await obs.AppendAsync(userCreated);
Assert.NotEmpty(storage);
}
}
public void WriteCorrectlyStoresFeed(
AtomEventWriteUsage usage,
[Frozen(As = typeof(ITypeResolver))] TestEventTypeResolver dummyResolver,
[Frozen(As = typeof(IContentSerializer))] XmlContentSerializer dummySerializer,
[Frozen(As = typeof(IAtomEventStorage))] AtomEventsInMemory storage,
AtomEventWriterFactory <XmlAttributedTestEventX> writerFactory,
AtomEventObserver <XmlAttributedTestEventX> sut,
XmlAttributedTestEventX expectedEvent)
{
var before = DateTimeOffset.Now;
writerFactory.Create(usage).WriteTo(sut, expectedEvent);
var writtenFeeds = storage.Feeds.Select(ParseAtomFeed);
var actual = FindFirstPage(writtenFeeds, sut.Id);
var expectedFeed =
new AtomFeedLikeness(before, actual.Id, expectedEvent);
Assert.True(
expectedFeed.Equals(actual),
"Expected feed must match actual feed.");
}
public void SutYieldsPagedEvents(
[Frozen(As = typeof(ITypeResolver))] TestEventTypeResolver dummyResolver,
[Frozen(As = typeof(IContentSerializer))] XmlContentSerializer dummySerializer,
[Frozen(As = typeof(IAtomEventStorage))] AtomEventsInMemory dummyInjectedIntoSut,
[Frozen] UuidIri dummyId,
AtomEventObserver <XmlAttributedTestEventX> writer,
LifoEvents <XmlAttributedTestEventX> sut,
Generator <XmlAttributedTestEventX> eventGenerator)
{
var expected = eventGenerator.Take(writer.PageSize * 2 + 1).ToList();
Enumerable
.Reverse(expected)
.ToList()
.ForEach(e => writer.AppendAsync(e).Wait());
Assert.True(
expected.SequenceEqual(sut),
"Events should be yielded in a LIFO order");
Assert.True(
expected.Cast <object>().SequenceEqual(sut.OfType <object>()),
"Events should be yielded in a LIFO order");
}
public void WriteCorrectlyStoresLastLinkOnIndex(
AtomEventWriteUsage usage,
[Frozen(As = typeof(ITypeResolver))] TestEventTypeResolver dummyResolver,
[Frozen(As = typeof(IContentSerializer))] XmlContentSerializer dummySerializer,
[Frozen(As = typeof(IAtomEventStorage))] AtomEventsInMemory storage,
AtomEventWriterFactory <XmlAttributedTestEventX> writerFactory,
AtomEventObserver <XmlAttributedTestEventX> sut,
XmlAttributedTestEventX expectedEvent)
{
var before = DateTimeOffset.Now;
writerFactory.Create(usage).WriteTo(sut, expectedEvent);
var writtenFeeds = storage.Feeds.Select(ParseAtomFeed);
var index = FindIndex(writtenFeeds, sut.Id);
var firstLink = index.Links.SingleOrDefault(l => l.IsFirstLink);
Assert.NotNull(firstLink);
var lastLink = index.Links.SingleOrDefault(l => l.IsLastLink);
Assert.NotNull(lastLink);
Assert.Equal(firstLink.Href, lastLink.Href);
}
public void WriteTo(AtomEventObserver <T> observer, T @event)
{
observer.OnNext(@event);
}
public void WriteTo(AtomEventObserver <T> observer, T @event)
{
observer.AppendAsync(@event).Wait();
}
public void OnCompletedDoesNotThrow(
AtomEventObserver <DataContractTestEventX> sut)
{
Assert.DoesNotThrow(sut.OnCompleted);
}
public void ReadMultipleEvents()
{
var eventStreamId =
new Guid("A0E50259-7345-48F9-84B4-BEEB5CEC662C");
using (var storage = new AtomEventsInMemory())
{
var pageSize = 25;
/* This is an example of how to use the TypeResolutionEntry
* class, so it should not be refactored to one of the terser
* alternatives. */
var resolver =
new TypeResolutionTable(
new TypeResolutionEntry(
"urn:grean:samples:user-on-boarding",
"user-created",
typeof(UserCreated)),
new TypeResolutionEntry(
"urn:grean:samples:user-on-boarding",
"email-verified",
typeof(EmailVerified)),
new TypeResolutionEntry(
"urn:grean:samples:user-on-boarding",
"email-changed",
typeof(EmailChanged)));
var serializer = new DataContractContentSerializer(resolver);
var obs = new AtomEventObserver <object>(
eventStreamId,
pageSize,
storage,
serializer);
obs.OnNext(new UserCreated
{
UserId = eventStreamId,
UserName = "******",
Password = "******",
Email = "*****@*****.**"
});
obs.OnNext(new EmailVerified
{
UserId = eventStreamId,
Email = "*****@*****.**"
});
obs.OnNext(new EmailChanged
{
UserId = eventStreamId,
NewEmail = "*****@*****.**"
});
var events = new FifoEvents <object>(
eventStreamId, // a Guid
storage, // an IAtomEventStorage object
serializer); // an IContentSerializer object
var user = User.Fold(events);
Assert.Equal(eventStreamId, user.Id);
Assert.Equal("ploeh", user.Name);
Assert.Equal("12345", user.Password);
Assert.Equal("*****@*****.**", user.Email);
Assert.False(user.EmailVerified);
}
}
public void OnErrorDoesNotThrow(
AtomEventObserver <DataContractTestEventX> sut,
Exception error)
{
Assert.DoesNotThrow(() => sut.OnError(error));
}
public void ReadMultipleEvents()
{
var eventStreamId =
new Guid("A0E50259-7345-48F9-84B4-BEEB5CEC662C");
using (var storage = new AtomEventsInMemory())
{
var pageSize = 25;
var serializer = DataContractContentSerializer.Scan(
typeof(UserCreated).Assembly);
var obs = new AtomEventObserver<IUserEvent>(
eventStreamId,
pageSize,
storage,
serializer);
obs.OnNext(new UserCreated
{
UserId = eventStreamId,
UserName = "******",
Password = "******",
Email = "*****@*****.**"
});
obs.OnNext(new EmailVerified
{
UserId = eventStreamId,
Email = "*****@*****.**"
});
obs.OnNext(new EmailChanged
{
UserId = eventStreamId,
NewEmail = "*****@*****.**"
});
var events = new FifoEvents<IUserEvent>(
eventStreamId, // a Guid
storage, // an IAtomEventStorage object
serializer); // an IContentSerializer object
var user = User.Fold(events);
Assert.Equal(eventStreamId, user.Id);
Assert.Equal("ploeh", user.Name);
Assert.Equal("12345", user.Password);
Assert.Equal("*****@*****.**", user.Email);
Assert.False(user.EmailVerified);
}
}
public void ReadMultipleEvents()
{
var eventStreamId =
new Guid("A0E50259-7345-48F9-84B4-BEEB5CEC662C");
using (var storage = new AtomEventsInMemory())
{
var pageSize = 25;
/* This is an example of how to use the TypeResolutionEntry
* class, so it should not be refactored to one of the terser
* alternatives. */
var resolver =
new TypeResolutionTable(
new TypeResolutionEntry(
"urn:grean:samples:user-on-boarding",
"user-created",
typeof(UserCreated)),
new TypeResolutionEntry(
"urn:grean:samples:user-on-boarding",
"email-verified",
typeof(EmailVerified)),
new TypeResolutionEntry(
"urn:grean:samples:user-on-boarding",
"email-changed",
typeof(EmailChanged)));
var serializer = new DataContractContentSerializer(resolver);
var obs = new AtomEventObserver<object>(
eventStreamId,
pageSize,
storage,
serializer);
obs.OnNext(new UserCreated
{
UserId = eventStreamId,
UserName = "******",
Password = "******",
Email = "*****@*****.**"
});
obs.OnNext(new EmailVerified
{
UserId = eventStreamId,
Email = "*****@*****.**"
});
obs.OnNext(new EmailChanged
{
UserId = eventStreamId,
NewEmail = "*****@*****.**"
});
var events = new FifoEvents<object>(
eventStreamId, // a Guid
storage, // an IAtomEventStorage object
serializer); // an IContentSerializer object
var user = User.Fold(events);
Assert.Equal(eventStreamId, user.Id);
Assert.Equal("ploeh", user.Name);
Assert.Equal("12345", user.Password);
Assert.Equal("*****@*****.**", user.Email);
Assert.False(user.EmailVerified);
}
}
public void SutIsObserver(AtomEventObserver <DataContractTestEventX> sut)
{
Assert.IsAssignableFrom <IObserver <DataContractTestEventX> >(sut);
}
