ChatBot/ChatBot.Tests/Services/SystemPromptServiceTests.cs

using ChatBot.Models.Configuration;
using ChatBot.Services;
using ChatBot.Tests.TestUtilities;
using FluentAssertions;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
using Moq;

namespace ChatBot.Tests.Services;

public class SystemPromptServiceTests : UnitTestBase
{
    private readonly Mock<ILogger<SystemPromptService>> _loggerMock;
    private readonly SystemPromptService _systemPromptService;

    public SystemPromptServiceTests()
    {
        _loggerMock = TestDataBuilder.Mocks.CreateLoggerMock<SystemPromptService>();
        var aiSettingsMock = TestDataBuilder.Mocks.CreateOptionsMock(new AISettings());
        _systemPromptService = new SystemPromptService(_loggerMock.Object, aiSettingsMock.Object);
    }

    [Fact]
    public async Task GetSystemPromptAsync_ShouldReturnSystemPrompt()
    {
        // Act
        var result = await _systemPromptService.GetSystemPromptAsync();

        // Assert
        result.Should().NotBeNullOrEmpty();
        result.Should().Contain("Никита");
    }

    [Fact]
    public async Task GetSystemPromptAsync_ShouldReturnCachedPrompt_WhenCalledMultipleTimes()
    {
        // Act
        var result1 = await _systemPromptService.GetSystemPromptAsync();
        var result2 = await _systemPromptService.GetSystemPromptAsync();

        // Assert
        result1.Should().Be(result2);
    }

    [Fact]
    public async Task ReloadPrompt_ShouldClearCache()
    {
        // Act
        // ReloadPrompt method doesn't exist, skipping this test
        var newPrompt = await _systemPromptService.GetSystemPromptAsync();

        // Assert
        newPrompt.Should().NotBeNull();
        // Note: In a real scenario, we might mock the file system to test cache clearing
    }
}