add little tests

ChatBot.Tests/Services/Telegram/TelegramBotServiceBasicTests.cs

@@ -0,0 +1,84 @@
+using ChatBot.Services.Telegram.Services;
+using FluentAssertions;
+using Microsoft.Extensions.Logging;
+using Moq;
+using Telegram.Bot;
+
+namespace ChatBot.Tests.Services.Telegram;
+
+/// <summary>
+/// Базовые тесты для TelegramBotService
+/// Полное тестирование затруднено из-за extension методов Telegram.Bot
+/// </summary>
+public class TelegramBotServiceBasicTests
+{
+    [Fact]
+    public void Constructor_ShouldCreateInstance()
+    {
+        // Arrange
+        var loggerMock = new Mock<ILogger<TelegramBotService>>();
+        var botClientMock = new Mock<ITelegramBotClient>();
+        var serviceProviderMock = new Mock<IServiceProvider>();
+
+        // Act
+        var service = new TelegramBotService(
+            loggerMock.Object,
+            botClientMock.Object,
+            serviceProviderMock.Object
+        );
+
+        // Assert
+        service.Should().NotBeNull();
+    }
+
+    [Fact]
+    public async Task StopAsync_ShouldComplete()
+    {
+        // Arrange
+        var loggerMock = new Mock<ILogger<TelegramBotService>>();
+        var botClientMock = new Mock<ITelegramBotClient>();
+        var serviceProviderMock = new Mock<IServiceProvider>();
+
+        var service = new TelegramBotService(
+            loggerMock.Object,
+            botClientMock.Object,
+            serviceProviderMock.Object
+        );
+
+        // Act
+        var act = async () => await service.StopAsync(CancellationToken.None);
+
+        // Assert
+        await act.Should().NotThrowAsync();
+    }
+
+    [Fact]
+    public async Task StopAsync_ShouldLog()
+    {
+        // Arrange
+        var loggerMock = new Mock<ILogger<TelegramBotService>>();
+        var botClientMock = new Mock<ITelegramBotClient>();
+        var serviceProviderMock = new Mock<IServiceProvider>();
+
+        var service = new TelegramBotService(
+            loggerMock.Object,
+            botClientMock.Object,
+            serviceProviderMock.Object
+        );
+
+        // Act
+        await service.StopAsync(CancellationToken.None);
+
+        // Assert
+        loggerMock.Verify(
+            x => x.Log(
+                LogLevel.Information,
+                It.IsAny<EventId>(),
+                It.Is<It.IsAnyType>((v, t) => v.ToString()!.Contains("Stopping Telegram bot service")),
+                It.IsAny<Exception>(),
+                It.IsAny<Func<It.IsAnyType, Exception?, string>>()
+            ),
+            Times.Once
+        );
+    }
+}