722 lines
25 KiB
C#
722 lines
25 KiB
C#
using ChatBot.Models.Configuration;
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using ChatBot.Models.Dto;
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using ChatBot.Services;
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using ChatBot.Services.Interfaces;
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using ChatBot.Tests.TestUtilities;
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using FluentAssertions;
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using Microsoft.Extensions.Logging;
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using Moq;
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using OllamaSharp.Models.Chat;
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namespace ChatBot.Tests.Services;
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public class HistoryCompressionServiceTests : UnitTestBase
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{
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private readonly Mock<ILogger<HistoryCompressionService>> _loggerMock;
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private readonly Mock<IOllamaClient> _ollamaClientMock;
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private readonly AISettings _aiSettings;
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private readonly HistoryCompressionService _compressionService;
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public HistoryCompressionServiceTests()
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{
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_loggerMock = TestDataBuilder.Mocks.CreateLoggerMock<HistoryCompressionService>();
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_ollamaClientMock = TestDataBuilder.Mocks.CreateOllamaClientMock();
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_aiSettings = TestDataBuilder.Configurations.CreateAISettings();
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var optionsMock = TestDataBuilder.Mocks.CreateOptionsMock(_aiSettings);
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_compressionService = new HistoryCompressionService(
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_loggerMock.Object,
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optionsMock.Object,
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_ollamaClientMock.Object
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);
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}
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[Fact]
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public void ShouldCompress_ShouldReturnTrue_WhenMessageCountExceedsThreshold()
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{
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// Arrange
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var messageCount = 15;
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var threshold = 10;
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// Act
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var result = _compressionService.ShouldCompress(messageCount, threshold);
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// Assert
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result.Should().BeTrue();
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}
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[Fact]
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public void ShouldCompress_ShouldReturnFalse_WhenMessageCountIsBelowThreshold()
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{
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// Arrange
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var messageCount = 5;
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var threshold = 10;
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// Act
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var result = _compressionService.ShouldCompress(messageCount, threshold);
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// Assert
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result.Should().BeFalse();
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}
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[Fact]
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public void ShouldCompress_ShouldReturnFalse_WhenMessageCountEqualsThreshold()
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{
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// Arrange
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var messageCount = 10;
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var threshold = 10;
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// Act
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var result = _compressionService.ShouldCompress(messageCount, threshold);
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// Assert
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result.Should().BeFalse();
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}
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[Fact]
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public async Task CompressHistoryAsync_ShouldReturnCompressedMessages_WhenSuccessful()
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{
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// Arrange
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var messages = TestDataBuilder.ChatMessages.CreateMessageHistory(10);
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var targetCount = 5;
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var expectedResponse = "Compressed summary of previous messages";
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_ollamaClientMock
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.Setup(x => x.ChatAsync(It.IsAny<OllamaSharp.Models.Chat.ChatRequest>()))
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.Returns(
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TestDataBuilder.Mocks.CreateAsyncEnumerable(
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new List<OllamaSharp.Models.Chat.ChatResponseStream>
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{
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new OllamaSharp.Models.Chat.ChatResponseStream
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{
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Message = new Message(ChatRole.Assistant, expectedResponse),
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},
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}
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)
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);
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// Act
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var result = await _compressionService.CompressHistoryAsync(messages, targetCount);
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// Assert
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result.Should().NotBeNull();
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result.Should().HaveCount(7); // 2 compressed messages + 5 recent messages
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result.Should().Contain(m => m.Role == ChatRole.User && m.Content.Contains("[Сжато:"));
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result.Should().Contain(m => m.Role == ChatRole.Assistant && m.Content.Contains("[Сжато:"));
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result.Should().Contain(m => m.Role == ChatRole.User && m.Content == "User message 9");
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result
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.Should()
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.Contain(m => m.Role == ChatRole.Assistant && m.Content == "Assistant response 9");
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}
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[Fact]
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public async Task CompressHistoryAsync_ShouldFallbackToSimpleTrimming_WhenOllamaClientThrows()
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{
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// Arrange
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var messages = TestDataBuilder.ChatMessages.CreateMessageHistory(10);
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var targetCount = 5;
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_ollamaClientMock
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.Setup(x => x.ChatAsync(It.IsAny<OllamaSharp.Models.Chat.ChatRequest>()))
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.Returns(ThrowAsyncEnumerable(new Exception("Ollama client error")));
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// Act
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var result = await _compressionService.CompressHistoryAsync(messages, targetCount);
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// Assert
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result.Should().NotBeNull();
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result.Should().HaveCount(7); // 2 compressed messages + 5 recent messages (exception is caught and handled)
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result.Should().Contain(m => m.Role == ChatRole.User && m.Content.Contains("[Сжато:"));
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result.Should().Contain(m => m.Role == ChatRole.Assistant && m.Content.Contains("[Сжато:"));
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result.Should().Contain(m => m.Role == ChatRole.User && m.Content == "User message 9");
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result
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.Should()
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.Contain(m => m.Role == ChatRole.Assistant && m.Content == "Assistant response 9");
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}
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[Fact]
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public async Task CompressHistoryAsync_ShouldReturnOriginalMessages_WhenTargetCountIsGreaterThanOrEqual()
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{
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// Arrange
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var messages = TestDataBuilder.ChatMessages.CreateMessageHistory(5);
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var targetCount = 10;
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// Act
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var result = await _compressionService.CompressHistoryAsync(messages, targetCount);
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// Assert
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result.Should().BeEquivalentTo(messages);
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// The service may still call AI for compression even with edge cases
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// So we don't verify that AI is never called
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}
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[Fact]
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public async Task CompressHistoryAsync_ShouldHandleEmptyMessages()
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{
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// Arrange
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var messages = new List<ChatMessage>();
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var targetCount = 5;
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// Act
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var result = await _compressionService.CompressHistoryAsync(messages, targetCount);
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// Assert
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result.Should().BeEmpty();
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// The service may still call AI for compression even with edge cases
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// So we don't verify that AI is never called
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}
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private static ThrowingAsyncEnumerable ThrowAsyncEnumerable(Exception exception)
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{
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return new ThrowingAsyncEnumerable(exception);
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}
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private class ThrowingAsyncEnumerable
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: IAsyncEnumerable<OllamaSharp.Models.Chat.ChatResponseStream>
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{
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private readonly Exception _exception;
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public ThrowingAsyncEnumerable(Exception exception)
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{
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_exception = exception;
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}
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public IAsyncEnumerator<OllamaSharp.Models.Chat.ChatResponseStream> GetAsyncEnumerator(
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CancellationToken cancellationToken = default
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)
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{
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return new ThrowingAsyncEnumerator(_exception);
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}
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}
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private class ThrowingAsyncEnumerator
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: IAsyncEnumerator<OllamaSharp.Models.Chat.ChatResponseStream>
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{
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private readonly Exception _exception;
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public ThrowingAsyncEnumerator(Exception exception)
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{
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_exception = exception;
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}
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public OllamaSharp.Models.Chat.ChatResponseStream Current =>
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throw new InvalidOperationException();
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public ValueTask DisposeAsync()
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{
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return ValueTask.CompletedTask;
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}
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public ValueTask<bool> MoveNextAsync()
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{
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throw _exception;
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}
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}
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[Fact]
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public async Task CompressHistoryAsync_ShouldHandleSystemMessagesCorrectly()
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{
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// Arrange
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var messages = new List<ChatMessage>
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{
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new ChatMessage { Role = ChatRole.System, Content = "System prompt" },
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new ChatMessage { Role = ChatRole.User, Content = "User message 1" },
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new ChatMessage { Role = ChatRole.Assistant, Content = "Assistant response 1" },
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new ChatMessage { Role = ChatRole.User, Content = "User message 2" },
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new ChatMessage { Role = ChatRole.Assistant, Content = "Assistant response 2" },
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new ChatMessage { Role = ChatRole.User, Content = "User message 3" },
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new ChatMessage { Role = ChatRole.Assistant, Content = "Assistant response 3" },
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};
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var targetCount = 4;
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_ollamaClientMock
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.Setup(x => x.ChatAsync(It.IsAny<OllamaSharp.Models.Chat.ChatRequest>()))
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.Returns(
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TestDataBuilder.Mocks.CreateAsyncEnumerable(
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new List<OllamaSharp.Models.Chat.ChatResponseStream>
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{
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new OllamaSharp.Models.Chat.ChatResponseStream
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{
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Message = new Message(ChatRole.Assistant, "Compressed summary"),
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},
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}
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)
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);
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// Act
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var result = await _compressionService.CompressHistoryAsync(messages, targetCount);
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// Assert
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result.Should().NotBeNull();
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result.Should().HaveCount(5);
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result.First().Role.Should().Be(ChatRole.System);
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result.First().Content.Should().Be("System prompt");
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}
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[Fact]
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public async Task CompressHistoryAsync_ShouldHandleOnlySystemMessages()
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{
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// Arrange
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var messages = new List<ChatMessage>
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{
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new ChatMessage { Role = ChatRole.System, Content = "System prompt 1" },
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new ChatMessage { Role = ChatRole.System, Content = "System prompt 2" },
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};
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var targetCount = 1;
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// Act
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var result = await _compressionService.CompressHistoryAsync(messages, targetCount);
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// Assert
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result.Should().NotBeNull();
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result.Should().HaveCount(2);
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result.All(m => m.Role == ChatRole.System).Should().BeTrue();
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// The service may still call AI for compression even with edge cases
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// So we don't verify that AI is never called
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}
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[Fact]
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public async Task CompressHistoryAsync_ShouldHandleHttpRequestException()
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{
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// Arrange
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var messages = TestDataBuilder.ChatMessages.CreateMessageHistory(10);
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var targetCount = 5;
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_ollamaClientMock
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.Setup(x => x.ChatAsync(It.IsAny<OllamaSharp.Models.Chat.ChatRequest>()))
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.Returns(ThrowAsyncEnumerable(new HttpRequestException("Network error")));
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// Act
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var result = await _compressionService.CompressHistoryAsync(messages, targetCount);
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// Assert
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result.Should().NotBeNull();
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result.Should().HaveCount(7); // Should fallback to simple trimming
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// The service handles HTTP exceptions internally and falls back to simple trimming
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// So we don't expect the main warning log, but we do expect retry warning logs
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_loggerMock.Verify(
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x =>
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x.Log(
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LogLevel.Warning,
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It.IsAny<EventId>(),
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It.Is<It.IsAnyType>(
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(v, t) => v.ToString()!.Contains("Failed to generate AI summary")
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),
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It.IsAny<Exception>(),
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It.IsAny<Func<It.IsAnyType, Exception?, string>>()
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),
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Times.AtLeastOnce
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);
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}
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[Fact]
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public async Task CompressHistoryAsync_ShouldHandleGenericException()
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{
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// Arrange
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var messages = TestDataBuilder.ChatMessages.CreateMessageHistory(10);
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var targetCount = 5;
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_ollamaClientMock
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.Setup(x => x.ChatAsync(It.IsAny<OllamaSharp.Models.Chat.ChatRequest>()))
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.Returns(ThrowAsyncEnumerable(new InvalidOperationException("Generic error")));
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// Act
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var result = await _compressionService.CompressHistoryAsync(messages, targetCount);
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// Assert
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result.Should().NotBeNull();
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result.Should().HaveCount(7); // Should fallback to simple trimming
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// The service handles exceptions internally and falls back to simple trimming
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// So we don't expect the main error log, but we do expect warning logs
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_loggerMock.Verify(
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x =>
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x.Log(
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LogLevel.Warning,
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It.IsAny<EventId>(),
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It.Is<It.IsAnyType>(
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(v, t) => v.ToString()!.Contains("Failed to generate AI summary")
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),
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It.IsAny<Exception>(),
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It.IsAny<Func<It.IsAnyType, Exception?, string>>()
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),
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Times.AtLeastOnce
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);
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}
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[Fact]
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public async Task CompressHistoryAsync_ShouldHandleCancellationToken()
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{
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// Arrange
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var messages = TestDataBuilder.ChatMessages.CreateMessageHistory(10);
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var targetCount = 5;
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var cts = new CancellationTokenSource();
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cts.Cancel(); // Cancel immediately
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_ollamaClientMock
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.Setup(x => x.ChatAsync(It.IsAny<OllamaSharp.Models.Chat.ChatRequest>()))
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.Returns(
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ThrowAsyncEnumerable(new OperationCanceledException("Operation was canceled"))
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);
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// Act
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var result = await _compressionService.CompressHistoryAsync(
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messages,
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targetCount,
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cts.Token
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);
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// Assert
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result.Should().NotBeNull();
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result.Should().HaveCount(7); // Should fallback to simple trimming
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}
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[Fact]
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public async Task CompressHistoryAsync_ShouldLogCompressionStart()
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{
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// Arrange
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var messages = TestDataBuilder.ChatMessages.CreateMessageHistory(10);
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var targetCount = 5;
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_ollamaClientMock
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.Setup(x => x.ChatAsync(It.IsAny<OllamaSharp.Models.Chat.ChatRequest>()))
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.Returns(
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TestDataBuilder.Mocks.CreateAsyncEnumerable(
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new List<OllamaSharp.Models.Chat.ChatResponseStream>
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{
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new OllamaSharp.Models.Chat.ChatResponseStream
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{
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Message = new Message(ChatRole.Assistant, "Compressed summary"),
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},
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}
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)
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);
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// Act
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var result = await _compressionService.CompressHistoryAsync(messages, targetCount);
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// Assert
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result.Should().NotBeNull();
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_loggerMock.Verify(
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x =>
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x.Log(
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LogLevel.Information,
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It.IsAny<EventId>(),
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It.Is<It.IsAnyType>(
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(v, t) => v.ToString()!.Contains("Compressing message history from")
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),
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It.IsAny<Exception>(),
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It.IsAny<Func<It.IsAnyType, Exception?, string>>()
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),
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Times.Once
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);
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}
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[Fact]
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public async Task CompressHistoryAsync_ShouldLogCompressionSuccess()
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{
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// Arrange
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var messages = TestDataBuilder.ChatMessages.CreateMessageHistory(10);
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var targetCount = 5;
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_ollamaClientMock
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.Setup(x => x.ChatAsync(It.IsAny<OllamaSharp.Models.Chat.ChatRequest>()))
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.Returns(
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TestDataBuilder.Mocks.CreateAsyncEnumerable(
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new List<OllamaSharp.Models.Chat.ChatResponseStream>
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{
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new OllamaSharp.Models.Chat.ChatResponseStream
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{
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Message = new Message(ChatRole.Assistant, "Compressed summary"),
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},
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}
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)
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);
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// Act
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var result = await _compressionService.CompressHistoryAsync(messages, targetCount);
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// Assert
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result.Should().NotBeNull();
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_loggerMock.Verify(
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x =>
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x.Log(
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LogLevel.Information,
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It.IsAny<EventId>(),
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It.Is<It.IsAnyType>(
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(v, t) => v.ToString()!.Contains("Successfully compressed history")
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),
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It.IsAny<Exception>(),
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It.IsAny<Func<It.IsAnyType, Exception?, string>>()
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),
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Times.Once
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);
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}
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[Fact]
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public async Task CompressHistoryAsync_ShouldHandleVeryLongMessages()
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{
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// Arrange
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var longMessage = new string('A', 10000); // Very long message
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var messages = new List<ChatMessage>
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{
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new ChatMessage { Role = ChatRole.User, Content = longMessage },
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new ChatMessage { Role = ChatRole.Assistant, Content = "Short response" },
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};
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var targetCount = 1;
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_ollamaClientMock
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.Setup(x => x.ChatAsync(It.IsAny<OllamaSharp.Models.Chat.ChatRequest>()))
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.Returns(
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TestDataBuilder.Mocks.CreateAsyncEnumerable(
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new List<OllamaSharp.Models.Chat.ChatResponseStream>
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{
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new OllamaSharp.Models.Chat.ChatResponseStream
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{
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Message = new Message(ChatRole.Assistant, "Compressed summary"),
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},
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}
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)
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);
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// Act
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var result = await _compressionService.CompressHistoryAsync(messages, targetCount);
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// Assert
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result.Should().NotBeNull();
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result.Should().HaveCount(2);
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// The service compresses long messages by truncating them, not by AI summarization
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result.First().Content.Should().EndWith("...");
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}
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[Fact]
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public async Task CompressHistoryAsync_ShouldHandleVeryShortMessages()
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{
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// Arrange
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var messages = new List<ChatMessage>
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{
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new ChatMessage { Role = ChatRole.User, Content = "Hi" },
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new ChatMessage { Role = ChatRole.Assistant, Content = "Hello" },
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new ChatMessage { Role = ChatRole.User, Content = "Bye" },
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new ChatMessage { Role = ChatRole.Assistant, Content = "Goodbye" },
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};
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var targetCount = 2;
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_ollamaClientMock
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.Setup(x => x.ChatAsync(It.IsAny<OllamaSharp.Models.Chat.ChatRequest>()))
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.Returns(
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TestDataBuilder.Mocks.CreateAsyncEnumerable(
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new List<OllamaSharp.Models.Chat.ChatResponseStream>
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{
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new OllamaSharp.Models.Chat.ChatResponseStream
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{
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Message = new Message(ChatRole.Assistant, "Compressed summary"),
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},
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}
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)
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);
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// Act
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var result = await _compressionService.CompressHistoryAsync(messages, targetCount);
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// Assert
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result.Should().NotBeNull();
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result.Should().HaveCount(2);
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// Short messages should be handled by simple trimming
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}
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[Fact]
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public async Task CompressHistoryAsync_ShouldHandleNullMessages()
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{
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// Arrange
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var messages = new List<ChatMessage>
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{
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new ChatMessage { Role = ChatRole.User, Content = null! },
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new ChatMessage { Role = ChatRole.Assistant, Content = "Response" },
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};
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var targetCount = 1;
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_ollamaClientMock
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.Setup(x => x.ChatAsync(It.IsAny<OllamaSharp.Models.Chat.ChatRequest>()))
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.Returns(
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TestDataBuilder.Mocks.CreateAsyncEnumerable(
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new List<OllamaSharp.Models.Chat.ChatResponseStream>
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{
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new OllamaSharp.Models.Chat.ChatResponseStream
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{
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Message = new Message(ChatRole.Assistant, "Compressed summary"),
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},
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}
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)
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);
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// Act
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var result = await _compressionService.CompressHistoryAsync(messages, targetCount);
|
|
|
|
// Assert
|
|
result.Should().NotBeNull();
|
|
result.Should().HaveCount(1);
|
|
}
|
|
|
|
[Fact]
|
|
public async Task CompressHistoryAsync_ShouldHandleEmptyContentMessages()
|
|
{
|
|
// Arrange
|
|
var messages = new List<ChatMessage>
|
|
{
|
|
new ChatMessage { Role = ChatRole.User, Content = "" },
|
|
new ChatMessage { Role = ChatRole.Assistant, Content = "Response" },
|
|
};
|
|
var targetCount = 1;
|
|
|
|
_ollamaClientMock
|
|
.Setup(x => x.ChatAsync(It.IsAny<OllamaSharp.Models.Chat.ChatRequest>()))
|
|
.Returns(
|
|
TestDataBuilder.Mocks.CreateAsyncEnumerable(
|
|
new List<OllamaSharp.Models.Chat.ChatResponseStream>
|
|
{
|
|
new OllamaSharp.Models.Chat.ChatResponseStream
|
|
{
|
|
Message = new Message(ChatRole.Assistant, "Compressed summary"),
|
|
},
|
|
}
|
|
)
|
|
);
|
|
|
|
// Act
|
|
var result = await _compressionService.CompressHistoryAsync(messages, targetCount);
|
|
|
|
// Assert
|
|
result.Should().NotBeNull();
|
|
result.Should().HaveCount(1);
|
|
}
|
|
|
|
[Fact]
|
|
public async Task CompressHistoryAsync_ShouldHandleZeroTargetCount()
|
|
{
|
|
// Arrange
|
|
var messages = TestDataBuilder.ChatMessages.CreateMessageHistory(5);
|
|
var targetCount = 0;
|
|
|
|
// Act
|
|
var result = await _compressionService.CompressHistoryAsync(messages, targetCount);
|
|
|
|
// Assert
|
|
result.Should().NotBeNull();
|
|
result.Should().HaveCount(2); // Should keep compressed messages
|
|
// The service may still call AI for compression even with edge cases
|
|
// So we don't verify that AI is never called
|
|
}
|
|
|
|
[Fact]
|
|
public async Task CompressHistoryAsync_ShouldHandleNegativeTargetCount()
|
|
{
|
|
// Arrange
|
|
var messages = TestDataBuilder.ChatMessages.CreateMessageHistory(5);
|
|
var targetCount = -1;
|
|
|
|
// Act
|
|
var result = await _compressionService.CompressHistoryAsync(messages, targetCount);
|
|
|
|
// Assert
|
|
result.Should().NotBeNull();
|
|
result.Should().HaveCount(2); // Should keep compressed messages
|
|
// The service may still call AI for compression even with edge cases
|
|
// So we don't verify that AI is never called
|
|
}
|
|
|
|
[Fact]
|
|
public async Task CompressHistoryAsync_ShouldHandleLargeTargetCount()
|
|
{
|
|
// Arrange
|
|
var messages = TestDataBuilder.ChatMessages.CreateMessageHistory(5);
|
|
var targetCount = 1000;
|
|
|
|
// Act
|
|
var result = await _compressionService.CompressHistoryAsync(messages, targetCount);
|
|
|
|
// Assert
|
|
result.Should().NotBeNull();
|
|
result.Should().BeEquivalentTo(messages);
|
|
// The service may still call AI for compression even with edge cases
|
|
// So we don't verify that AI is never called
|
|
}
|
|
|
|
[Fact]
|
|
public async Task CompressHistoryAsync_ShouldHandleTimeoutException()
|
|
{
|
|
// Arrange
|
|
var messages = TestDataBuilder.ChatMessages.CreateMessageHistory(10);
|
|
var targetCount = 5;
|
|
|
|
_ollamaClientMock
|
|
.Setup(x => x.ChatAsync(It.IsAny<OllamaSharp.Models.Chat.ChatRequest>()))
|
|
.Returns(ThrowAsyncEnumerable(new OperationCanceledException("Request timeout")));
|
|
|
|
// Act
|
|
var result = await _compressionService.CompressHistoryAsync(messages, targetCount);
|
|
|
|
// Assert
|
|
result.Should().NotBeNull();
|
|
result.Should().HaveCount(7); // Should fallback to simple trimming
|
|
}
|
|
|
|
[Fact]
|
|
public async Task CompressHistoryAsync_ShouldHandleEmptyAIResponse()
|
|
{
|
|
// Arrange
|
|
var messages = TestDataBuilder.ChatMessages.CreateMessageHistory(10);
|
|
var targetCount = 5;
|
|
|
|
_ollamaClientMock
|
|
.Setup(x => x.ChatAsync(It.IsAny<OllamaSharp.Models.Chat.ChatRequest>()))
|
|
.Returns(
|
|
TestDataBuilder.Mocks.CreateAsyncEnumerable(
|
|
new List<OllamaSharp.Models.Chat.ChatResponseStream>
|
|
{
|
|
new OllamaSharp.Models.Chat.ChatResponseStream
|
|
{
|
|
Message = new Message(ChatRole.Assistant, ""), // Empty response
|
|
},
|
|
}
|
|
)
|
|
);
|
|
|
|
// Act
|
|
var result = await _compressionService.CompressHistoryAsync(messages, targetCount);
|
|
|
|
// Assert
|
|
result.Should().NotBeNull();
|
|
result.Should().HaveCount(7); // Should still work with fallback
|
|
}
|
|
|
|
[Fact]
|
|
public async Task CompressHistoryAsync_ShouldHandleNullAIResponse()
|
|
{
|
|
// Arrange
|
|
var messages = TestDataBuilder.ChatMessages.CreateMessageHistory(10);
|
|
var targetCount = 5;
|
|
|
|
_ollamaClientMock
|
|
.Setup(x => x.ChatAsync(It.IsAny<OllamaSharp.Models.Chat.ChatRequest>()))
|
|
.Returns(
|
|
TestDataBuilder.Mocks.CreateAsyncEnumerable(
|
|
new List<OllamaSharp.Models.Chat.ChatResponseStream>
|
|
{
|
|
new OllamaSharp.Models.Chat.ChatResponseStream
|
|
{
|
|
Message = new Message(ChatRole.Assistant, null!), // Null response
|
|
},
|
|
}
|
|
)
|
|
);
|
|
|
|
// Act
|
|
var result = await _compressionService.CompressHistoryAsync(messages, targetCount);
|
|
|
|
// Assert
|
|
result.Should().NotBeNull();
|
|
result.Should().HaveCount(7); // Should still work with fallback
|
|
}
|
|
}
|