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ConsumerResolverTests.cs
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ConsumerResolverTests.cs
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using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using Amazon.SQS;
using Amazon.SQS.Model;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using NSubstitute;
using Shouldly;
using Xunit;
namespace SqsPoller.Tests.Unit
{
public class ConsumerResolverTests
{
[Fact]
public async Task Resolve_FirstMessageConsumerFound_HandleMethodIsInvoked()
{
//Arrange
var fakeService = Substitute.For<IFakeService>();
var fakeLogger = Substitute.For<ILogger<ConsumerResolver>>();
var firstConsumer = new FirstMessageConsumer(fakeService);
var secondConsumer = new SecondMessageConsumer(fakeService);
var consumers = new IConsumer[] {firstConsumer, secondConsumer};
var consumerResolver = new ConsumerResolver(consumers, fakeLogger);
var message = new FirstMessage {Value = "First Message"};
var messageAsString = JsonConvert.SerializeObject(message);
var messageType = nameof(FirstMessage);
var sqsMessage = new Message
{
MessageAttributes = new Dictionary<string, MessageAttributeValue>
{
{"MessageType", new MessageAttributeValue {StringValue = messageType}}
},
Body = messageAsString
};
//Act
await consumerResolver.Resolve(sqsMessage, CancellationToken.None);
//Assert
fakeService.Received(1).FirstMethod();
fakeService.DidNotReceive().SecondMethod();
}
[Fact]
public async Task Resolve_SecondMessageConsumerFound_HandleMethodIsInvoked()
{
//Arrange
var fakeService = Substitute.For<IFakeService>();
var fakeLogger = Substitute.For<ILogger<ConsumerResolver>>();
var firstConsumer = new FirstMessageConsumer(fakeService);
var secondConsumer = new SecondMessageConsumer(fakeService);
var consumers = new IConsumer[] {firstConsumer, secondConsumer};
var consumerResolver = new ConsumerResolver(consumers, fakeLogger);
var message = new SecondMessage {Value = "First Message"};
var messageAsString = JsonConvert.SerializeObject(message);
var messageType = nameof(SecondMessage);
var sqsMessage = new Message
{
MessageAttributes = new Dictionary<string, MessageAttributeValue>
{
{"MessageType", new MessageAttributeValue {StringValue = messageType}}
},
Body = messageAsString
};
//Act
await consumerResolver.Resolve(sqsMessage, CancellationToken.None);
//Assert
fakeService.DidNotReceive().FirstMethod();
fakeService.Received(1).SecondMethod();
}
[Fact]
public void Resolve_ConsumerNotFound_ConsumerNotFoundExceptionThrown()
{
//Arrange
var fakeService = Substitute.For<IFakeService>();
var fakeLogger = Substitute.For<ILogger<ConsumerResolver>>();
var firstConsumer = new FirstMessageConsumer(fakeService);
var secondConsumer = new SecondMessageConsumer(fakeService);
var consumers = new IConsumer[] {firstConsumer, secondConsumer};
var consumerResolver = new ConsumerResolver(consumers, fakeLogger);
var message = new SecondMessage {Value = "First Message"};
var messageAsString = JsonConvert.SerializeObject(message);
var messageType = "fakeMessageType";
var sqsMessage = new Message
{
MessageAttributes = new Dictionary<string, MessageAttributeValue>
{
{"MessageType", new MessageAttributeValue {StringValue = messageType}}
},
Body = messageAsString
};
//Act
var task = consumerResolver.Resolve(sqsMessage, CancellationToken.None);
//Assert
Should.Throw<ConsumerNotFoundException>(task);
}
[Fact]
public async Task Resolve_ConsumerFound_TwoMethodsAreInvoked()
{
//Arrange
var fakeService = Substitute.For<IFakeService>();
var fakeLogger = Substitute.For<ILogger<ConsumerResolver>>();
var thirdConsumer = new ThirdMessageConsumer(fakeService);
var consumers = new IConsumer[] {thirdConsumer};
var consumerResolver = new ConsumerResolver(consumers, fakeLogger);
var firstMessage = new FirstMessage {Value = "First Message"};
var firstSqsMessage = new Message
{
MessageAttributes = new Dictionary<string, MessageAttributeValue>
{
{"MessageType", new MessageAttributeValue {StringValue = nameof(FirstMessage)}}
},
Body = JsonConvert.SerializeObject(firstMessage)
};
var secondMessage = new SecondMessage {Value = "Second Message"};
var secondSqsMessage = new Message
{
MessageAttributes = new Dictionary<string, MessageAttributeValue>
{
{"MessageType", new MessageAttributeValue {StringValue = nameof(SecondMessage)}}
},
Body = JsonConvert.SerializeObject(secondMessage)
};
//Act
await consumerResolver.Resolve(firstSqsMessage, CancellationToken.None);
await consumerResolver.Resolve(secondSqsMessage, CancellationToken.None);
//Assert
fakeService.Received(1).FirstMethod();
fakeService.Received(1).SecondMethod();
}
[Fact]
public async Task Resolve_ConsumersFound_TwoMethodsAreInvokedTwice()
{
//Arrange
var fakeService = Substitute.For<IFakeService>();
var fakeLogger = Substitute.For<ILogger<ConsumerResolver>>();
var firstConsumer = new FirstMessageConsumer(fakeService);
var secondConsumer = new SecondMessageConsumer(fakeService);
var thirdConsumer = new ThirdMessageConsumer(fakeService);
var consumers = new IConsumer[] {firstConsumer, secondConsumer, thirdConsumer};
var consumerResolver = new ConsumerResolver(consumers, fakeLogger);
var firstMessage = new FirstMessage {Value = "First Message"};
var firstSqsMessage = new Message
{
MessageAttributes = new Dictionary<string, MessageAttributeValue>
{
{"MessageType", new MessageAttributeValue {StringValue = nameof(FirstMessage)}}
},
Body = JsonConvert.SerializeObject(firstMessage)
};
var secondMessage = new SecondMessage {Value = "Second Message"};
var secondSqsMessage = new Message
{
MessageAttributes = new Dictionary<string, MessageAttributeValue>
{
{"MessageType", new MessageAttributeValue {StringValue = nameof(SecondMessage)}}
},
Body = JsonConvert.SerializeObject(secondMessage)
};
//Act
await consumerResolver.Resolve(firstSqsMessage, CancellationToken.None);
await consumerResolver.Resolve(secondSqsMessage, CancellationToken.None);
//Assert
fakeService.Received(2).FirstMethod();
fakeService.Received(2).SecondMethod();
}
[Fact]
public async Task Test()
{
//Arrange
var fakeLogger = Substitute.For<ILogger<ConsumerResolver>>();
var throwingMessageConsumer = new ThrowingMessageConsumer();
var consumers = new IConsumer[] { throwingMessageConsumer };
var consumerResolver = new ConsumerResolver(consumers, fakeLogger);
var firstMessage = new ThrowingMessage { Value = "First Message" };
var firstSqsMessage = new Message
{
MessageAttributes = new Dictionary<string, MessageAttributeValue>
{
{"MessageType", new MessageAttributeValue {StringValue = nameof(ThrowingMessage)}}
},
Body = JsonConvert.SerializeObject(firstMessage)
};
var sqs = Substitute.For<IAmazonSQS>();
sqs.ReceiveMessageAsync(Arg.Any<ReceiveMessageRequest>(), Arg.Any<CancellationToken>())
.Returns(new ReceiveMessageResponse { Messages = new List<Message> { firstSqsMessage } });
SqsPollerHostedService sqsPollerHostedService = new SqsPollerHostedService(
sqs,
new SqsPollerConfig { QueueUrl = "blah" },
consumerResolver,
Substitute.For<ILogger<SqsPollerHostedService>>());
await sqsPollerHostedService.Handle("blah", CancellationToken.None);
await sqs.DidNotReceive().DeleteMessageAsync(Arg.Any<DeleteMessageRequest>(), Arg.Any<CancellationToken>());
}
}
}