public async Task StoreAsync_ConcurrentlyModifyExistingEntity_ExceptionThrown()
{
var eventStore = _dbContext.Persons.Add(new PersonEventStore {
Id = 12, EntityVersion = 1
}).Entity;
eventStore.Events.Add(
new PersonEvent
{
SerializedEvent = "{\"NewName\": \"Silverback\"}",
ClrType =
"Silverback.Tests.EventSourcing.TestTypes.EntityEvents.NameChangedEvent, Silverback.EventSourcing.Tests"
});
_dbContext.SaveChanges();
var repo = new PersonDbEventStoreRepository(new EfCoreDbContext <TestDbContext>(_dbContext));
var person = repo.Find(p => p.Id == 12);
var person2 = repo.Find(p => p.Id == 12);
person !.ChangeName("Sergio");
person.ChangeAge(35);
person2 !.ChangeName("Sergio");
person2.ChangeAge(35);
await repo.StoreAsync(person);
Func <Task> act = async() => await repo.StoreAsync(person2);
await act.Should().ThrowAsync <EventStoreConcurrencyException>();
}
public async Task StoreAsync_ExistingEntity_VersionIncremented()
{
var eventStore = _dbContext.Persons.Add(new PersonEventStore {
Id = 12, EntityVersion = 1
}).Entity;
eventStore.Events.Add(
new PersonEvent
{
SerializedEvent = "{\"NewName\": \"Silverback\"}",
ClrType =
"Silverback.Tests.EventSourcing.TestTypes.EntityEvents.NameChangedEvent, Silverback.EventSourcing.Tests"
});
_dbContext.SaveChanges();
var repo = new PersonDbEventStoreRepository(new EfCoreDbContext <TestDbContext>(_dbContext));
var person = repo.Find(p => p.Id == 12);
person !.ChangeName("Sergio");
person.ChangeAge(35);
await repo.StoreAsync(person);
_dbContext.Persons.First().EntityVersion.Should().Be(3);
}
public async Task StoreAsync_ExistingEntity_NewEventsSaved()
{
var eventStore = _dbContext.Persons.Add(new PersonEventStore {
Id = 12, EntityVersion = 1
}).Entity;
eventStore.Events.Add(new PersonEvent
{
SerializedEvent = "{" +
"\"$type\": \"Silverback.Tests.EventSourcing.TestTypes.Person+NameChangedEvent, Silverback.EventSourcing.Tests\"," +
"\"NewName\": \"Silverback\"" +
"}"
});
_dbContext.SaveChanges();
var repo = new PersonDbEventStoreRepository(new EfCoreDbContext <TestDbContext>(_dbContext));
var person = await repo.GetAsync(p => p.Id == 12);
person.ChangeName("Sergio");
person.ChangeAge(35);
await repo.StoreAsync(person);
await _dbContext.SaveChangesAsync();
_dbContext.Persons.Count().Should().Be(1);
_dbContext.Persons.First().Events.Count.Should().Be(3);
}
public async Task StoreAsync_EntityWithSomeEvents_VersionCalculated()
{
var repo = new PersonDbEventStoreRepository(new EfCoreDbContext <TestDbContext>(_dbContext));
var person = new Person();
person.ChangeName("Sergio");
person.ChangeAge(35);
await repo.StoreAsync(person);
await _dbContext.SaveChangesAsync();
_dbContext.Persons.First().EntityVersion.Should().Be(2);
}