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KernelInvocationContextTests.cs
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KernelInvocationContextTests.cs
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// Copyright (c) .NET Foundation and contributors. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
using FluentAssertions;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.DotNet.Interactive.Commands;
using Microsoft.DotNet.Interactive.CSharp;
using Microsoft.DotNet.Interactive.Events;
using Microsoft.DotNet.Interactive.Tests.Utility;
using Xunit;
namespace Microsoft.DotNet.Interactive.Tests;
public class KernelInvocationContextTests
{
[Fact]
public async Task Current_differs_per_async_context()
{
var barrier = new Barrier(2);
KernelCommand commandInTask1 = null;
KernelCommand commandInTask2 = null;
await Task.Run(() =>
{
using (var x = KernelInvocationContext.Establish(new SubmitCode("")))
{
barrier.SignalAndWait(1000);
commandInTask1 = KernelInvocationContext.Current.Command;
}
});
await Task.Run(() =>
{
using (KernelInvocationContext.Establish(new SubmitCode("")))
{
barrier.SignalAndWait(1000);
commandInTask2 = KernelInvocationContext.Current.Command;
}
});
commandInTask1.Should()
.NotBe(commandInTask2)
.And
.NotBeNull();
}
[Fact]
public async Task Middleware_can_be_used_to_emit_events_after_the_command_has_been_handled()
{
using var kernel = new CompositeKernel
{
new CSharpKernel()
};
using var kernelEvents = kernel.KernelEvents.ToSubscribedList();
kernel.AddMiddleware(async (command, context, next) =>
{
context.Publish(new DisplayedValueProduced(1, command));
await next(command, context);
context.Publish(new DisplayedValueProduced(3, command));
});
var result = await kernel.SendAsync(new SubmitCode("2"));
var values = result.Events.OfType<DisplayEvent>()
.Where(x => x is ReturnValueProduced || x is DisplayedValueProduced)
.Select(v => v.Value);
values
.Should()
.BeEquivalentSequenceTo(1, 2, 3);
}
[Fact]
public async Task Commands_created_by_submission_splitting_do_not_publish_CommandSucceeded()
{
using var kernel = new CompositeKernel
{
new CSharpKernel ( "cs1" ),
new CSharpKernel ( "cs2" )
};
var kernelEvents = kernel.KernelEvents.ToSubscribedList();
var command = new SubmitCode(@"
#!cs1
""hello""
#!cs2
""world""
");
await kernel.SendAsync(command);
kernelEvents.Should()
.ContainSingle<CommandSucceeded>()
.Which
.Command.Should().BeSameAs(command);
}
[Fact]
public async Task Commands_created_by_submission_splitting_do_not_publish_CommandFailed()
{
using var kernel = new CompositeKernel
{
new CSharpKernel ( "cs1" ),
new CSharpKernel ( "cs2" )
};
var kernelEvents = kernel.KernelEvents.ToSubscribedList();
var command = new SubmitCode(@"
#!cs1
""hello""
#!cs2
error
");
await kernel.SendAsync(command);
kernelEvents.Should()
.ContainSingle<CommandFailed>()
.Which
.Command.Should().BeSameAs(command);
}
[Fact]
public void When_Fail_is_called_CommandFailed_is_published()
{
var command = new SubmitCode("123");
using var context = KernelInvocationContext.Establish(command);
var events = context.KernelEvents.ToSubscribedList();
context.Fail(command, message: "oops!");
events.Should()
.ContainSingle<CommandFailed>();
}
[Fact]
public void When_Fail_is_called_CommandHandled_is_not_published()
{
var command = new SubmitCode("123");
using var context = KernelInvocationContext.Establish(command);
var events = context.KernelEvents.ToSubscribedList();
context.Fail(command, message: "oops!");
events.Should()
.NotContain(e => e is CommandSucceeded);
}
[Fact]
public void When_Complete_is_called_then_CommandHandled_is_published()
{
var command = new SubmitCode("123");
using var context = KernelInvocationContext.Establish(command);
var events = context.KernelEvents.ToSubscribedList();
context.Complete(command);
events.Should()
.ContainSingle<CommandSucceeded>();
}
[Fact]
public void When_Complete_is_called_then_CommandFailed_is_not_published()
{
var command = new SubmitCode("123");
using var context = KernelInvocationContext.Establish(command);
var events = context.KernelEvents.ToSubscribedList();
context.Complete(command);
events.Should()
.NotContain(e => e is CommandFailed);
}
[Fact]
public void When_Complete_is_called_then_no_further_events_are_published()
{
var command = new SubmitCode("123");
using var context = KernelInvocationContext.Establish(command);
var events = context.KernelEvents.ToSubscribedList();
context.Complete(command);
context.Publish(new ErrorProduced("oops", command));
events.Should().NotContain(e => e is ErrorProduced);
}
[Fact]
public void When_Fail_is_called_then_no_further_events_are_published()
{
var command = new SubmitCode("123");
using var context = KernelInvocationContext.Establish(command);
var events = context.KernelEvents.ToSubscribedList();
context.Fail(command, message: "oops");
context.Publish(new DisplayedValueProduced("oops", command));
events.Should().NotContain(e => e is DisplayedValueProduced);
}
[Fact]
public void When_multiple_commands_are_active_then_context_does_not_publish_CommandHandled_until_all_are_complete()
{
var outerSubmitCode = new SubmitCode("abc");
using var outer = KernelInvocationContext.Establish(outerSubmitCode);
var events = outer.KernelEvents.ToSubscribedList();
var innerSubmitCode = new SubmitCode("def");
using var inner = KernelInvocationContext.Establish(innerSubmitCode);
inner.Complete(innerSubmitCode);
events.Should().NotContain(e => e is CommandSucceeded);
}
[Fact]
public void When_outer_context_is_completed_then_inner_commands_can_no_longer_be_used_to_publish_events()
{
using var outer = KernelInvocationContext.Establish(new SubmitCode("abc"));
var events = outer.KernelEvents.ToSubscribedList();
using var inner = KernelInvocationContext.Establish(new SubmitCode("def"));
outer.Complete(outer.Command);
inner.Publish(new ErrorProduced("oops!", inner.Command));
events.Should().NotContain(e => e is ErrorProduced);
}
[Fact]
public void When_inner_context_is_completed_then_no_further_events_can_be_published_for_it()
{
using var outer = KernelInvocationContext.Establish(new SubmitCode("abc"));
var events = outer.KernelEvents.ToSubscribedList();
var innerSubmitCode = new SubmitCode("def");
using var inner = KernelInvocationContext.Establish(innerSubmitCode);
inner.Complete(innerSubmitCode);
inner.Publish(new ErrorProduced("oops!", innerSubmitCode));
events.Should().NotContain(e => e is ErrorProduced);
}
[Fact]
public void After_disposal_Current_is_null()
{
var context = KernelInvocationContext.Establish(new SubmitCode("123"));
context.Dispose();
KernelInvocationContext.Current.Should().BeNull();
}
[Fact]
public void When_inner_context_fails_then_CommandFailed_is_published_for_outer_command()
{
using var outer = KernelInvocationContext.Establish(new SubmitCode("abc"));
var events = outer.KernelEvents.ToSubscribedList();
var innerCommand = new SubmitCode("def");
using var inner = KernelInvocationContext.Establish(innerCommand);
inner.Fail(innerCommand);
events.Should()
.ContainSingle<CommandFailed>()
.Which
.Command
.Should()
.Be(outer.Command);
}
[Fact]
public void When_inner_context_fails_then_no_further_events_can_be_published()
{
var command = new SubmitCode("abc");
using var outer = KernelInvocationContext.Establish(command);
var events = outer.KernelEvents.ToSubscribedList();
var innerCommand = new SubmitCode("def");
using var inner = KernelInvocationContext.Establish(innerCommand);
inner.Fail(innerCommand);
inner.Publish(new DisplayedValueProduced("oops!", command));
events.Should().NotContain(e => e is DisplayedValueProduced);
}
}