public void given_command_publisher_exception_handled_SaveProcessManagerAndPublishCommands_does_not_throw()
{
// Arrange
var processManager = new FooProcessManager();
CancellationToken cancellationToken = CancellationToken.None;
Exception exception = new InvalidOperationException();
ICommandPublisher commandPublisher = Mock.Of <ICommandPublisher>();
Mock.Get(commandPublisher)
.Setup(x => x.FlushCommands(processManager.Id, cancellationToken))
.ThrowsAsync(exception);
var sut = new SqlProcessManagerDataContext <FooProcessManager>(
new FooProcessManagerDbContext(),
new JsonMessageSerializer(),
commandPublisher,
new DelegatingCommandPublisherExceptionHandler(
context =>
context.Handled =
context.ProcessManagerType == typeof(FooProcessManager) &&
context.ProcessManagerId == processManager.Id &&
context.Exception == exception));
// Act
Func <Task> action = () =>
sut.SaveProcessManagerAndPublishCommands(processManager, cancellationToken: cancellationToken);
// Assert
action.ShouldNotThrow();
}
public void SaveProcessManagerAndPublishCommands_absorbs_command_publisher_exception_handler_exception()
{
// Arrange
var processManager = new FooProcessManager();
CancellationToken cancellationToken = CancellationToken.None;
ICommandPublisher commandPublisher = Mock.Of <ICommandPublisher>();
Mock.Get(commandPublisher)
.Setup(x => x.FlushCommands(processManager.Id, cancellationToken))
.ThrowsAsync(new InvalidOperationException());
var sut = new SqlProcessManagerDataContext <FooProcessManager>(
new FooProcessManagerDbContext(),
new JsonMessageSerializer(),
commandPublisher,
new DelegatingCommandPublisherExceptionHandler(
context =>
{
context.Handled = true;
throw new InvalidOperationException();
}));
// Act
Func <Task> action = () =>
sut.SaveProcessManagerAndPublishCommands(processManager, cancellationToken: cancellationToken);
// Assert
action.ShouldNotThrow();
}
public async Task SaveProcessManagerAndPublishCommands_inserts_new_process_manager()
{
// Arrange
var processManager = new FooProcessManager {
AggregateId = Guid.NewGuid()
};
var sut = new SqlProcessManagerDataContext <FooProcessManager>(
new FooProcessManagerDbContext(),
new JsonMessageSerializer(),
Mock.Of <ICommandPublisher>());
using (sut)
{
// Act
await sut.SaveProcessManagerAndPublishCommands(processManager);
}
// Assert
using (var db = new FooProcessManagerDbContext())
{
FooProcessManager actual = await
db.FooProcessManagers.SingleOrDefaultAsync(x => x.Id == processManager.Id);
actual.Should().NotBeNull();
actual.AggregateId.Should().Be(processManager.AggregateId);
}
}
public void given_command_publisher_fails_SaveProcessManagerAndPublishCommands_invokes_exception_handler()
{
// Arrange
var processManager = new FooProcessManager();
CancellationToken cancellationToken = CancellationToken.None;
Exception exception = new InvalidOperationException();
ICommandPublisher commandPublisher = Mock.Of <ICommandPublisher>();
Mock.Get(commandPublisher)
.Setup(x => x.FlushCommands(processManager.Id, cancellationToken))
.ThrowsAsync(exception);
ICommandPublisherExceptionHandler commandPublisherExceptionHandler = Mock.Of <ICommandPublisherExceptionHandler>();
var sut = new SqlProcessManagerDataContext <FooProcessManager>(
new FooProcessManagerDbContext(),
new JsonMessageSerializer(),
commandPublisher,
commandPublisherExceptionHandler);
// Act
Func <Task> action = () =>
sut.SaveProcessManagerAndPublishCommands(processManager, cancellationToken: cancellationToken);
// Assert
action.ShouldThrow <InvalidOperationException>().Which.Should().BeSameAs(exception);
Mock.Get(commandPublisherExceptionHandler).Verify(
x =>
x.Handle(It.Is <CommandPublisherExceptionContext>(
p =>
p.ProcessManagerType == typeof(FooProcessManager) &&
p.ProcessManagerId == processManager.Id &&
p.Exception == exception)),
Times.Once());
}
public void Dispose_disposes_db_context()
{
IDisposable disposable = Mock.Of <IDisposable>();
var sut = new SqlProcessManagerDataContext <FooProcessManager>(
new FooProcessManagerDbContext {
DisposableResource = disposable
},
new JsonMessageSerializer(),
Mock.Of <ICommandPublisher>());
sut.Dispose();
Mock.Get(disposable).Verify(x => x.Dispose(), Times.Once());
}
public async Task SaveProcessManagerAndPublishCommands_commits_once()
{
// Arrange
var context = new FooProcessManagerDbContext();
var sut = new SqlProcessManagerDataContext <FooProcessManager>(
context,
new JsonMessageSerializer(),
Mock.Of <ICommandPublisher>());
var processManager = new FooProcessManager();
// Act
await sut.SaveProcessManagerAndPublishCommands(processManager);
// Assert
context.CommitCount.Should().Be(1);
}
public async Task SaveProcessManagerAndPublishCommands_inserts_pending_scheduled_commands_sequentially()
{
// Arrange
var fixture = new Fixture();
IEnumerable <(FooCommand command, DateTimeOffset scheduledTime)> scheduledCommands = fixture.CreateMany <(FooCommand, DateTimeOffset)>();
var processManager = new FooProcessManager(
from e in scheduledCommands
select new ScheduledCommand(e.command, e.scheduledTime));
var operationId = Guid.NewGuid();
var correlationId = Guid.NewGuid();
string contributor = fixture.Create <string>();
var serializer = new JsonMessageSerializer();
// Act
using (var sut = new SqlProcessManagerDataContext <FooProcessManager>(
new FooProcessManagerDbContext(),
serializer,
Mock.Of <ICommandPublisher>()))
{
await sut.SaveProcessManagerAndPublishCommands(processManager, operationId, correlationId, contributor);
}
// Assert
using (var db = new FooProcessManagerDbContext())
{
IQueryable <PendingScheduledCommand> query =
from c in db.PendingScheduledCommands
where c.ProcessManagerId == processManager.Id
orderby c.Id
select c;
var pendingScheduledCommands = query.ToList();
pendingScheduledCommands.Should().HaveCount(scheduledCommands.Count());
foreach (((FooCommand command, DateTimeOffset scheduledTime)expected, PendingScheduledCommand actual)t in
scheduledCommands.Zip(pendingScheduledCommands, (expected, actual) => (expected, actual)))
{
t.actual.ProcessManagerType.Should().Be(typeof(FooProcessManager).FullName);
t.actual.ProcessManagerId.Should().Be(processManager.Id);
t.actual.MessageId.Should().NotBeEmpty();
t.actual.OperationId.Should().Be(operationId);
t.actual.CorrelationId.Should().Be(correlationId);
t.actual.Contributor.Should().Be(contributor);
serializer.Deserialize(t.actual.CommandJson).ShouldBeEquivalentTo(t.expected.command, opts => opts.RespectingRuntimeTypes());
t.actual.ScheduledTime.Should().Be(t.expected.scheduledTime);
}
}
}
public async Task SaveProcessManagerAndPublishCommands_publishes_commands()
{
// Arrange
var fixture = new Fixture();
FooProcessManager processManager = fixture.Create <FooProcessManager>();
ICommandPublisher publisher = Mock.Of <ICommandPublisher>();
var sut = new SqlProcessManagerDataContext <FooProcessManager>(
new FooProcessManagerDbContext(),
new JsonMessageSerializer(),
publisher);
// Act
await sut.SaveProcessManagerAndPublishCommands(processManager);
// Assert
Mock.Get(publisher).Verify(x => x.FlushCommands(processManager.Id, CancellationToken.None), Times.Once());
}
public async Task FindProcessManager_returns_null_if_process_manager_that_satisfies_predicate_not_found()
{
// Arrange
var sut = new SqlProcessManagerDataContext <FooProcessManager>(
new FooProcessManagerDbContext(),
new JsonMessageSerializer(),
Mock.Of <ICommandPublisher>());
using (sut)
{
Expression <Func <FooProcessManager, bool> > predicate = x => x.Id == Guid.NewGuid();
// Act
FooProcessManager actual = await sut.FindProcessManager(predicate, CancellationToken.None);
// Assert
actual.Should().BeNull();
}
}
public async Task FindProcessManager_returns_process_manager_that_satisfies_predicate()
{
// Arrange
var processManagers = Enumerable
.Repeat <Func <FooProcessManager> >(() => new FooProcessManager {
AggregateId = Guid.NewGuid()
}, 10)
.Select(f => f.Invoke())
.ToList();
FooProcessManager expected = processManagers.First();
using (var db = new FooProcessManagerDbContext())
{
var random = new Random();
foreach (FooProcessManager processManager in from p in processManagers
orderby random.Next()
select p)
{
db.FooProcessManagers.Add(processManager);
}
await db.SaveChangesAsync();
}
var sut = new SqlProcessManagerDataContext <FooProcessManager>(
new FooProcessManagerDbContext(),
new JsonMessageSerializer(),
Mock.Of <ICommandPublisher>());
using (sut)
{
Expression <Func <FooProcessManager, bool> > predicate = x => x.AggregateId == expected.AggregateId;
// Act
FooProcessManager actual = await sut.FindProcessManager(predicate, CancellationToken.None);
// Assert
actual.Should().NotBeNull();
actual.Id.Should().Be(expected.Id);
}
}
public void given_fails_to_commit_SaveProcessManagerAndPublishCommands_does_not_publish_commands()
{
// Arrange
var fixture = new Fixture();
ICommandPublisher publisher = Mock.Of <ICommandPublisher>();
FooProcessManager processManager = fixture.Create <FooProcessManager>();
processManager.SetValidationError("invalid process manager state");
var sut = new SqlProcessManagerDataContext <FooProcessManager>(
new FooProcessManagerDbContext(),
new JsonMessageSerializer(),
publisher);
// Act
Func <Task> action = () => sut.SaveProcessManagerAndPublishCommands(processManager);
// Assert
action.ShouldThrow <DbEntityValidationException>();
Mock.Get(publisher).Verify(x => x.FlushCommands(processManager.Id, CancellationToken.None), Times.Never());
}
public async Task FindProcessManager_flushes_pending_commands()
{
// Arrange
ICommandPublisher publisher = Mock.Of <ICommandPublisher>();
var processManager = new FooProcessManager();
var sut = new SqlProcessManagerDataContext <FooProcessManager>(
new FooProcessManagerDbContext(),
new JsonMessageSerializer(),
publisher);
using (var db = new FooProcessManagerDbContext())
{
db.FooProcessManagers.Add(processManager);
await db.SaveChangesAsync();
}
// Act
await sut.FindProcessManager(p => p.Id == processManager.Id, CancellationToken.None);
// Assert
Mock.Get(publisher).Verify(x => x.FlushCommands(processManager.Id, CancellationToken.None), Times.Once());
}
public async Task SaveProcessManagerAndPublishCommands_updates_existing_process_manager()
{
// Arrange
var fixture = new Fixture();
FooProcessManager processManager = fixture.Create <FooProcessManager>();
using (var db = new FooProcessManagerDbContext())
{
db.FooProcessManagers.Add(processManager);
await db.SaveChangesAsync();
}
string statusValue = fixture.Create <string>();
var sut = new SqlProcessManagerDataContext <FooProcessManager>(
new FooProcessManagerDbContext(),
new JsonMessageSerializer(),
Mock.Of <ICommandPublisher>());
using (sut)
{
processManager = await sut.FindProcessManager(x => x.Id == processManager.Id);
processManager.StatusValue = statusValue;
// Act
await sut.SaveProcessManagerAndPublishCommands(processManager);
}
// Assert
using (var db = new FooProcessManagerDbContext())
{
FooProcessManager actual = await
db.FooProcessManagers.SingleOrDefaultAsync(x => x.Id == processManager.Id);
actual.StatusValue.Should().Be(statusValue);
}
}