add latest tests

2025-10-20 09:29:08 +03:00
parent e011bb667f
commit 6c34b9cbb9
11 changed files with 2847 additions and 617 deletions
--- a/ChatBot.Tests/Configuration/Validators/AISettingsValidatorTests.cs
+++ b/ChatBot.Tests/Configuration/Validators/AISettingsValidatorTests.cs
--- a/ChatBot.Tests/Configuration/Validators/DatabaseSettingsValidatorTests.cs
+++ b/ChatBot.Tests/Configuration/Validators/DatabaseSettingsValidatorTests.cs
@@ -1,84 +1,167 @@
 using ChatBot.Models.Configuration;
 using ChatBot.Models.Configuration.Validators;
 using FluentAssertions;
+using FluentValidation.TestHelper;
+using Microsoft.Extensions.Options;

 namespace ChatBot.Tests.Configuration.Validators;

 public class DatabaseSettingsValidatorTests
 {
-    private readonly DatabaseSettingsValidator _validator = new();
+    private readonly DatabaseSettingsValidator _validator;
+
+    public DatabaseSettingsValidatorTests()
+    {
+        _validator = new DatabaseSettingsValidator();
+    }

    [Fact]
-    public void Validate_ShouldReturnSuccess_WhenSettingsAreValid()
+    public void Validate_WithValidSettings_ShouldReturnSuccess()
    {
        // Arrange
-        var settings = new DatabaseSettings
-        {
-            ConnectionString =
-                "Host=localhost;Port=5432;Database=chatbot;Username=user;Password=pass",
-            CommandTimeout = 30,
-            EnableSensitiveDataLogging = false,
-        };
+        var settings = CreateValidDatabaseSettings();

        // Act
        var result = _validator.Validate(null, settings);

        // Assert
        result.Succeeded.Should().BeTrue();
+        result.Failed.Should().BeFalse();
+        result.FailureMessage.Should().BeNullOrEmpty();
    }

    [Fact]
-    public void Validate_ShouldReturnFailure_WhenConnectionStringIsEmpty()
+    public void Validate_WithEmptyConnectionString_ShouldReturnFailure()
    {
        // Arrange
-        var settings = new DatabaseSettings
-        {
-            ConnectionString = "",
-            CommandTimeout = 30,
-            EnableSensitiveDataLogging = false,
-        };
+        var settings = CreateValidDatabaseSettings();
+        settings.ConnectionString = string.Empty;

        // Act
        var result = _validator.Validate(null, settings);

        // Assert
        result.Succeeded.Should().BeFalse();
-        result.Failures.Should().Contain(f => f.Contains("Database connection string is required"));
+        result.Failed.Should().BeTrue();
+        result.FailureMessage.Should().Contain("Database connection string is required");
    }

    [Fact]
-    public void Validate_ShouldReturnFailure_WhenCommandTimeoutIsInvalid()
+    public void Validate_WithNullConnectionString_ShouldReturnFailure()
    {
        // Arrange
-        var settings = new DatabaseSettings
-        {
-            ConnectionString =
-                "Host=localhost;Port=5432;Database=chatbot;Username=user;Password=pass",
-            CommandTimeout = 0, // Invalid: <= 0
-            EnableSensitiveDataLogging = false,
-        };
+        var settings = CreateValidDatabaseSettings();
+        settings.ConnectionString = null!;

        // Act
        var result = _validator.Validate(null, settings);

        // Assert
        result.Succeeded.Should().BeFalse();
-        result.Failures.Should().Contain(f => f.Contains("Command timeout must be greater than 0"));
+        result.Failed.Should().BeTrue();
+        result.FailureMessage.Should().Contain("Database connection string is required");
+    }
+
+    [Fact]
+    public void Validate_WithWhitespaceConnectionString_ShouldReturnFailure()
+    {
+        // Arrange
+        var settings = CreateValidDatabaseSettings();
+        settings.ConnectionString = "   ";
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeFalse();
+        result.Failed.Should().BeTrue();
+        result.FailureMessage.Should().Contain("Database connection string is required");
    }

    [Theory]
-    [InlineData(null)]
-    [InlineData("")]
-    [InlineData("   ")]
-    public void Validate_ShouldReturnFailure_WhenConnectionStringIsNullOrWhitespace(
-        string? connectionString
-    )
+    [InlineData(0)]
+    [InlineData(-1)]
+    [InlineData(-10)]
+    public void Validate_WithInvalidCommandTimeout_ShouldReturnFailure(int commandTimeout)
+    {
+        // Arrange
+        var settings = CreateValidDatabaseSettings();
+        settings.CommandTimeout = commandTimeout;
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeFalse();
+        result.Failed.Should().BeTrue();
+        result.FailureMessage.Should().Contain("Command timeout must be greater than 0");
+    }
+
+    [Theory]
+    [InlineData(301)]
+    [InlineData(500)]
+    [InlineData(1000)]
+    public void Validate_WithTooHighCommandTimeout_ShouldReturnFailure(int commandTimeout)
+    {
+        // Arrange
+        var settings = CreateValidDatabaseSettings();
+        settings.CommandTimeout = commandTimeout;
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeFalse();
+        result.Failed.Should().BeTrue();
+        result
+            .FailureMessage.Should()
+            .Contain("Command timeout must be less than or equal to 300 seconds");
+    }
+
+    [Theory]
+    [InlineData(1)]
+    [InlineData(30)]
+    [InlineData(300)]
+    public void Validate_WithValidCommandTimeout_ShouldReturnSuccess(int commandTimeout)
+    {
+        // Arrange
+        var settings = CreateValidDatabaseSettings();
+        settings.CommandTimeout = commandTimeout;
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeTrue();
+        result.Failed.Should().BeFalse();
+        result.FailureMessage.Should().BeNullOrEmpty();
+    }
+
+    [Fact]
+    public void Validate_WithValidConnectionString_ShouldReturnSuccess()
+    {
+        // Arrange
+        var settings = CreateValidDatabaseSettings();
+        settings.ConnectionString =
+            "Host=localhost;Port=5432;Database=test;Username=user;Password=pass";
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeTrue();
+        result.Failed.Should().BeFalse();
+        result.FailureMessage.Should().BeNullOrEmpty();
+    }
+
+    [Fact]
+    public void Validate_WithMultipleValidationErrors_ShouldReturnAllErrors()
    {
        // Arrange
        var settings = new DatabaseSettings
        {
-            ConnectionString = connectionString!,
-            CommandTimeout = 30,
+            ConnectionString = string.Empty, // Invalid
+            CommandTimeout = 0, // Invalid
            EnableSensitiveDataLogging = false,
        };

@@ -87,6 +170,165 @@ public class DatabaseSettingsValidatorTests

        // Assert
        result.Succeeded.Should().BeFalse();
-        result.Failures.Should().Contain(f => f.Contains("Database connection string is required"));
+        result.Failed.Should().BeTrue();
+        result.FailureMessage.Should().Contain("Database connection string is required");
+        result.FailureMessage.Should().Contain("Command timeout must be greater than 0");
+    }
+
+    [Fact]
+    public void Validate_WithNullSettings_ShouldThrowException()
+    {
+        // Arrange & Act & Assert
+        var act = () => _validator.Validate(null, null!);
+        act.Should()
+            .Throw<InvalidOperationException>()
+            .WithMessage(
+                "Cannot pass a null model to Validate/ValidateAsync. The root model must be non-null."
+            );
+    }
+
+    [Fact]
+    public void FluentValidation_ConnectionString_ShouldHaveCorrectRule()
+    {
+        // Arrange
+        var settings = new DatabaseSettings { ConnectionString = string.Empty };
+
+        // Act & Assert
+        var result = _validator.TestValidate(settings);
+        result
+            .ShouldHaveValidationErrorFor(x => x.ConnectionString)
+            .WithErrorMessage("Database connection string is required");
+    }
+
+    [Fact]
+    public void FluentValidation_CommandTimeout_ShouldHaveCorrectRules()
+    {
+        // Arrange
+        var settings = new DatabaseSettings { CommandTimeout = 0 };
+
+        // Act & Assert
+        var result = _validator.TestValidate(settings);
+        result
+            .ShouldHaveValidationErrorFor(x => x.CommandTimeout)
+            .WithErrorMessage("Command timeout must be greater than 0");
+    }
+
+    [Fact]
+    public void FluentValidation_CommandTimeoutTooHigh_ShouldHaveCorrectRule()
+    {
+        // Arrange
+        var settings = new DatabaseSettings { CommandTimeout = 301 };
+
+        // Act & Assert
+        var result = _validator.TestValidate(settings);
+        result
+            .ShouldHaveValidationErrorFor(x => x.CommandTimeout)
+            .WithErrorMessage("Command timeout must be less than or equal to 300 seconds");
+    }
+
+    [Fact]
+    public void FluentValidation_ValidSettings_ShouldNotHaveErrors()
+    {
+        // Arrange
+        var settings = CreateValidDatabaseSettings();
+
+        // Act & Assert
+        var result = _validator.TestValidate(settings);
+        result.ShouldNotHaveAnyValidationErrors();
+    }
+
+    [Theory]
+    [InlineData("Host=localhost;Port=5432;Database=test;Username=user;Password=pass")]
+    [InlineData("Server=localhost;Database=test;User Id=user;Password=pass")]
+    [InlineData("Data Source=localhost;Initial Catalog=test;User ID=user;Password=pass")]
+    public void FluentValidation_ValidConnectionStrings_ShouldNotHaveErrors(string connectionString)
+    {
+        // Arrange
+        var settings = CreateValidDatabaseSettings();
+        settings.ConnectionString = connectionString;
+
+        // Act & Assert
+        var result = _validator.TestValidate(settings);
+        result.ShouldNotHaveValidationErrorFor(x => x.ConnectionString);
+    }
+
+    [Theory]
+    [InlineData(1)]
+    [InlineData(5)]
+    [InlineData(30)]
+    [InlineData(60)]
+    [InlineData(120)]
+    [InlineData(300)]
+    public void FluentValidation_ValidCommandTimeouts_ShouldNotHaveErrors(int commandTimeout)
+    {
+        // Arrange
+        var settings = CreateValidDatabaseSettings();
+        settings.CommandTimeout = commandTimeout;
+
+        // Act & Assert
+        var result = _validator.TestValidate(settings);
+        result.ShouldNotHaveValidationErrorFor(x => x.CommandTimeout);
+    }
+
+    [Fact]
+    public void ValidateOptionsResult_Success_ShouldHaveCorrectProperties()
+    {
+        // Arrange
+        var settings = CreateValidDatabaseSettings();
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeTrue();
+        result.Failed.Should().BeFalse();
+        result.FailureMessage.Should().BeNullOrEmpty();
+    }
+
+    [Fact]
+    public void ValidateOptionsResult_Failure_ShouldHaveCorrectProperties()
+    {
+        // Arrange
+        var settings = new DatabaseSettings { ConnectionString = string.Empty, CommandTimeout = 0 };
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeFalse();
+        result.Failed.Should().BeTrue();
+        result.FailureMessage.Should().NotBeNullOrEmpty();
+        result.FailureMessage.Should().Contain("Database connection string is required");
+        result.FailureMessage.Should().Contain("Command timeout must be greater than 0");
+    }
+
+    [Fact]
+    public void Validator_ShouldImplementIValidateOptions()
+    {
+        // Arrange & Act
+        var validator = new DatabaseSettingsValidator();
+
+        // Assert
+        validator.Should().BeAssignableTo<IValidateOptions<DatabaseSettings>>();
+    }
+
+    [Fact]
+    public void Validator_ShouldInheritFromAbstractValidator()
+    {
+        // Arrange & Act
+        var validator = new DatabaseSettingsValidator();
+
+        // Assert
+        validator.Should().BeAssignableTo<FluentValidation.AbstractValidator<DatabaseSettings>>();
+    }
+
+    private static DatabaseSettings CreateValidDatabaseSettings()
+    {
+        return new DatabaseSettings
+        {
+            ConnectionString = "Host=localhost;Port=5432;Database=test;Username=test;Password=test",
+            CommandTimeout = 30,
+            EnableSensitiveDataLogging = false,
+        };
    }
 }
--- a/ChatBot.Tests/Configuration/Validators/OllamaSettingsValidatorTests.cs
+++ b/ChatBot.Tests/Configuration/Validators/OllamaSettingsValidatorTests.cs
@@ -1,86 +1,350 @@
 using ChatBot.Models.Configuration;
 using ChatBot.Models.Configuration.Validators;
 using FluentAssertions;
+using Microsoft.Extensions.Options;

 namespace ChatBot.Tests.Configuration.Validators;

 public class OllamaSettingsValidatorTests
 {
-    private readonly OllamaSettingsValidator _validator = new();
+    private readonly OllamaSettingsValidator _validator;
+
+    public OllamaSettingsValidatorTests()
+    {
+        _validator = new OllamaSettingsValidator();
+    }

    [Fact]
-    public void Validate_ShouldReturnSuccess_WhenSettingsAreValid()
+    public void Validate_WithValidSettings_ShouldReturnSuccess()
    {
        // Arrange
-        var settings = new OllamaSettings
-        {
-            Url = "http://localhost:11434",
-            DefaultModel = "llama3.2",
-        };
+        var settings = CreateValidOllamaSettings();

        // Act
        var result = _validator.Validate(null, settings);

        // Assert
        result.Succeeded.Should().BeTrue();
+        result.Failed.Should().BeFalse();
+        result.FailureMessage.Should().BeNullOrEmpty();
    }

    [Fact]
-    public void Validate_ShouldReturnFailure_WhenUrlIsEmpty()
+    public void Validate_WithEmptyUrl_ShouldReturnFailure()
    {
        // Arrange
-        var settings = new OllamaSettings { Url = "", DefaultModel = "llama3.2" };
+        var settings = CreateValidOllamaSettings();
+        settings.Url = string.Empty;

        // Act
        var result = _validator.Validate(null, settings);

        // Assert
        result.Succeeded.Should().BeFalse();
-        result.Failures.Should().Contain(f => f.Contains("Ollama URL is required"));
+        result.Failed.Should().BeTrue();
+        result.FailureMessage.Should().Contain("Ollama URL is required");
    }

    [Fact]
-    public void Validate_ShouldReturnFailure_WhenUrlIsInvalid()
+    public void Validate_WithNullUrl_ShouldReturnFailure()
    {
        // Arrange
-        var settings = new OllamaSettings { Url = "invalid-url", DefaultModel = "llama3.2" };
+        var settings = CreateValidOllamaSettings();
+        settings.Url = null!;

        // Act
        var result = _validator.Validate(null, settings);

        // Assert
        result.Succeeded.Should().BeFalse();
-        result.Failures.Should().Contain(f => f.Contains("Invalid Ollama URL format"));
+        result.Failed.Should().BeTrue();
+        result.FailureMessage.Should().Contain("Ollama URL is required");
    }

    [Fact]
-    public void Validate_ShouldReturnFailure_WhenDefaultModelIsEmpty()
+    public void Validate_WithWhitespaceUrl_ShouldReturnFailure()
    {
        // Arrange
-        var settings = new OllamaSettings { Url = "http://localhost:11434", DefaultModel = "" };
+        var settings = CreateValidOllamaSettings();
+        settings.Url = "   ";

        // Act
        var result = _validator.Validate(null, settings);

        // Assert
        result.Succeeded.Should().BeFalse();
-        result.Failures.Should().Contain(f => f.Contains("DefaultModel is required"));
+        result.Failed.Should().BeTrue();
+        result.FailureMessage.Should().Contain("Ollama URL is required");
    }

    [Theory]
-    [InlineData(null)]
-    [InlineData("")]
-    [InlineData("   ")]
-    public void Validate_ShouldReturnFailure_WhenUrlIsNullOrWhitespace(string? url)
+    [InlineData("invalid-url")]
+    [InlineData("not-a-url")]
+    [InlineData("://invalid")]
+    [InlineData("http://")]
+    [InlineData("https://")]
+    public void Validate_WithInvalidUrlFormat_ShouldReturnFailure(string invalidUrl)
    {
        // Arrange
-        var settings = new OllamaSettings { Url = url!, DefaultModel = "llama3.2" };
+        var settings = CreateValidOllamaSettings();
+        settings.Url = invalidUrl;

        // Act
        var result = _validator.Validate(null, settings);

        // Assert
        result.Succeeded.Should().BeFalse();
-        result.Failures.Should().Contain(f => f.Contains("Ollama URL is required"));
+        result.Failed.Should().BeTrue();
+        result.FailureMessage.Should().Contain($"Invalid Ollama URL format: {invalidUrl}");
+    }
+
+    [Theory]
+    [InlineData("http://localhost:11434")]
+    [InlineData("https://localhost:11434")]
+    [InlineData("http://127.0.0.1:11434")]
+    [InlineData("https://ollama.example.com")]
+    [InlineData("http://192.168.1.100:11434")]
+    [InlineData("https://api.ollama.com")]
+    public void Validate_WithValidUrlFormat_ShouldReturnSuccess(string validUrl)
+    {
+        // Arrange
+        var settings = CreateValidOllamaSettings();
+        settings.Url = validUrl;
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeTrue();
+        result.Failed.Should().BeFalse();
+        result.FailureMessage.Should().BeNullOrEmpty();
+    }
+
+    [Fact]
+    public void Validate_WithEmptyDefaultModel_ShouldReturnFailure()
+    {
+        // Arrange
+        var settings = CreateValidOllamaSettings();
+        settings.DefaultModel = string.Empty;
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeFalse();
+        result.Failed.Should().BeTrue();
+        result.FailureMessage.Should().Contain("DefaultModel is required");
+    }
+
+    [Fact]
+    public void Validate_WithNullDefaultModel_ShouldReturnFailure()
+    {
+        // Arrange
+        var settings = CreateValidOllamaSettings();
+        settings.DefaultModel = null!;
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeFalse();
+        result.Failed.Should().BeTrue();
+        result.FailureMessage.Should().Contain("DefaultModel is required");
+    }
+
+    [Fact]
+    public void Validate_WithWhitespaceDefaultModel_ShouldReturnFailure()
+    {
+        // Arrange
+        var settings = CreateValidOllamaSettings();
+        settings.DefaultModel = "   ";
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeFalse();
+        result.Failed.Should().BeTrue();
+        result.FailureMessage.Should().Contain("DefaultModel is required");
+    }
+
+    [Theory]
+    [InlineData("llama3")]
+    [InlineData("llama3.1")]
+    [InlineData("llama3.2")]
+    [InlineData("codellama")]
+    [InlineData("mistral")]
+    [InlineData("phi3")]
+    [InlineData("gemma")]
+    [InlineData("qwen")]
+    public void Validate_WithValidDefaultModel_ShouldReturnSuccess(string validModel)
+    {
+        // Arrange
+        var settings = CreateValidOllamaSettings();
+        settings.DefaultModel = validModel;
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeTrue();
+        result.Failed.Should().BeFalse();
+        result.FailureMessage.Should().BeNullOrEmpty();
+    }
+
+    [Fact]
+    public void Validate_WithMultipleValidationErrors_ShouldReturnAllErrors()
+    {
+        // Arrange
+        var settings = new OllamaSettings
+        {
+            Url = "invalid-url", // Invalid
+            DefaultModel = string.Empty, // Invalid
+        };
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeFalse();
+        result.Failed.Should().BeTrue();
+        result.FailureMessage.Should().Contain("Invalid Ollama URL format: invalid-url");
+        result.FailureMessage.Should().Contain("DefaultModel is required");
+    }
+
+    [Fact]
+    public void Validate_WithNullSettings_ShouldThrowException()
+    {
+        // Arrange & Act & Assert
+        var act = () => _validator.Validate(null, null!);
+        act.Should().Throw<NullReferenceException>();
+    }
+
+    [Fact]
+    public void ValidateOptionsResult_Success_ShouldHaveCorrectProperties()
+    {
+        // Arrange
+        var settings = CreateValidOllamaSettings();
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeTrue();
+        result.Failed.Should().BeFalse();
+        result.FailureMessage.Should().BeNullOrEmpty();
+    }
+
+    [Fact]
+    public void ValidateOptionsResult_Failure_ShouldHaveCorrectProperties()
+    {
+        // Arrange
+        var settings = new OllamaSettings { Url = "invalid-url", DefaultModel = string.Empty };
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeFalse();
+        result.Failed.Should().BeTrue();
+        result.FailureMessage.Should().NotBeNullOrEmpty();
+        result.FailureMessage.Should().Contain("Invalid Ollama URL format: invalid-url");
+        result.FailureMessage.Should().Contain("DefaultModel is required");
+    }
+
+    [Fact]
+    public void Validator_ShouldImplementIValidateOptions()
+    {
+        // Arrange & Act
+        var validator = new OllamaSettingsValidator();
+
+        // Assert
+        validator.Should().BeAssignableTo<IValidateOptions<OllamaSettings>>();
+    }
+
+    [Theory]
+    [InlineData("http://localhost")]
+    [InlineData("https://localhost")]
+    [InlineData("http://localhost:8080")]
+    [InlineData("https://localhost:8080")]
+    [InlineData("http://example.com")]
+    [InlineData("https://example.com")]
+    [InlineData("http://192.168.1.1")]
+    [InlineData("https://192.168.1.1")]
+    [InlineData("http://10.0.0.1:11434")]
+    [InlineData("https://10.0.0.1:11434")]
+    public void Validate_WithVariousValidUrls_ShouldReturnSuccess(string validUrl)
+    {
+        // Arrange
+        var settings = CreateValidOllamaSettings();
+        settings.Url = validUrl;
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeTrue();
+        result.Failed.Should().BeFalse();
+        result.FailureMessage.Should().BeNullOrEmpty();
+    }
+
+    [Theory]
+    [InlineData("")]
+    [InlineData("   ")]
+    [InlineData("\t")]
+    [InlineData("\n")]
+    [InlineData("\r\n")]
+    public void Validate_WithVariousEmptyStrings_ShouldReturnFailure(string emptyString)
+    {
+        // Arrange
+        var settings = CreateValidOllamaSettings();
+        settings.Url = emptyString;
+        settings.DefaultModel = emptyString;
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeFalse();
+        result.Failed.Should().BeTrue();
+        result.FailureMessage.Should().Contain("Ollama URL is required");
+        result.FailureMessage.Should().Contain("DefaultModel is required");
+    }
+
+    [Fact]
+    public void Validate_WithVeryLongValidUrl_ShouldReturnSuccess()
+    {
+        // Arrange
+        var settings = CreateValidOllamaSettings();
+        settings.Url = "https://very-long-subdomain-name.example.com:11434/api/v1/ollama";
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeTrue();
+        result.Failed.Should().BeFalse();
+        result.FailureMessage.Should().BeNullOrEmpty();
+    }
+
+    [Fact]
+    public void Validate_WithVeryLongValidModel_ShouldReturnSuccess()
+    {
+        // Arrange
+        var settings = CreateValidOllamaSettings();
+        settings.DefaultModel = "very-long-model-name-with-many-parts-and-version-numbers";
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeTrue();
+        result.Failed.Should().BeFalse();
+        result.FailureMessage.Should().BeNullOrEmpty();
+    }
+
+    private static OllamaSettings CreateValidOllamaSettings()
+    {
+        return new OllamaSettings { Url = "http://localhost:11434", DefaultModel = "llama3" };
    }
 }
--- a/ChatBot.Tests/Configuration/Validators/TelegramBotSettingsValidatorTests.cs
+++ b/ChatBot.Tests/Configuration/Validators/TelegramBotSettingsValidatorTests.cs
@@ -1,76 +1,356 @@
 using ChatBot.Models.Configuration;
 using ChatBot.Models.Configuration.Validators;
 using FluentAssertions;
+using Microsoft.Extensions.Options;

 namespace ChatBot.Tests.Configuration.Validators;

 public class TelegramBotSettingsValidatorTests
 {
-    private readonly TelegramBotSettingsValidator _validator = new();
+    private readonly TelegramBotSettingsValidator _validator;
+
+    public TelegramBotSettingsValidatorTests()
+    {
+        _validator = new TelegramBotSettingsValidator();
+    }

    [Fact]
-    public void Validate_ShouldReturnSuccess_WhenSettingsAreValid()
+    public void Validate_WithValidSettings_ShouldReturnSuccess()
    {
        // Arrange
-        var settings = new TelegramBotSettings
-        {
-            BotToken = "1234567890:ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijk",
-        };
+        var settings = CreateValidTelegramBotSettings();

        // Act
        var result = _validator.Validate(null, settings);

        // Assert
        result.Succeeded.Should().BeTrue();
+        result.Failed.Should().BeFalse();
+        result.FailureMessage.Should().BeNullOrEmpty();
    }

    [Fact]
-    public void Validate_ShouldReturnFailure_WhenBotTokenIsEmpty()
+    public void Validate_WithEmptyBotToken_ShouldReturnFailure()
    {
        // Arrange
-        var settings = new TelegramBotSettings { BotToken = "" };
+        var settings = CreateValidTelegramBotSettings();
+        settings.BotToken = string.Empty;

        // Act
        var result = _validator.Validate(null, settings);

        // Assert
        result.Succeeded.Should().BeFalse();
-        result.Failures.Should().Contain(f => f.Contains("Telegram bot token is required"));
+        result.Failed.Should().BeTrue();
+        result.FailureMessage.Should().Contain("Telegram bot token is required");
    }

    [Fact]
-    public void Validate_ShouldReturnFailure_WhenBotTokenIsTooShort()
+    public void Validate_WithNullBotToken_ShouldReturnFailure()
    {
        // Arrange
-        var settings = new TelegramBotSettings
-        {
-            BotToken = "1234567890:ABC", // 15 chars, too short
-        };
+        var settings = CreateValidTelegramBotSettings();
+        settings.BotToken = null!;

        // Act
        var result = _validator.Validate(null, settings);

        // Assert
        result.Succeeded.Should().BeFalse();
-        result
-            .Failures.Should()
-            .Contain(f => f.Contains("Telegram bot token must be at least 40 characters"));
+        result.Failed.Should().BeTrue();
+        result.FailureMessage.Should().Contain("Telegram bot token is required");
+    }
+
+    [Fact]
+    public void Validate_WithWhitespaceBotToken_ShouldReturnFailure()
+    {
+        // Arrange
+        var settings = CreateValidTelegramBotSettings();
+        settings.BotToken = "   ";
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeFalse();
+        result.Failed.Should().BeTrue();
+        result.FailureMessage.Should().Contain("Telegram bot token is required");
    }

    [Theory]
-    [InlineData(null)]
    [InlineData("")]
    [InlineData("   ")]
-    public void Validate_ShouldReturnFailure_WhenBotTokenIsNullOrWhitespace(string? botToken)
+    [InlineData("\t")]
+    [InlineData("\n")]
+    [InlineData("\r\n")]
+    public void Validate_WithVariousEmptyStrings_ShouldReturnFailure(string emptyString)
    {
        // Arrange
-        var settings = new TelegramBotSettings { BotToken = botToken! };
+        var settings = CreateValidTelegramBotSettings();
+        settings.BotToken = emptyString;

        // Act
        var result = _validator.Validate(null, settings);

        // Assert
        result.Succeeded.Should().BeFalse();
-        result.Failures.Should().Contain(f => f.Contains("Telegram bot token is required"));
+        result.Failed.Should().BeTrue();
+        result.FailureMessage.Should().Contain("Telegram bot token is required");
+    }
+
+    [Theory]
+    [InlineData("123456789012345678901234567890123456789")] // 39 characters
+    [InlineData("12345678901234567890123456789012345678")] // 38 characters
+    [InlineData("1234567890123456789012345678901234567")] // 37 characters
+    [InlineData("123456789012345678901234567890123456")] // 36 characters
+    [InlineData("12345678901234567890123456789012345")] // 35 characters
+    [InlineData("1234567890123456789012345678901234")] // 34 characters
+    [InlineData("123456789012345678901234567890123")] // 33 characters
+    [InlineData("12345678901234567890123456789012")] // 32 characters
+    [InlineData("1234567890123456789012345678901")] // 31 characters
+    [InlineData("123456789012345678901234567890")] // 30 characters
+    [InlineData("12345678901234567890123456789")] // 29 characters
+    [InlineData("1234567890123456789012345678")] // 28 characters
+    [InlineData("123456789012345678901234567")] // 27 characters
+    [InlineData("12345678901234567890123456")] // 26 characters
+    [InlineData("1234567890123456789012345")] // 25 characters
+    [InlineData("123456789012345678901234")] // 24 characters
+    [InlineData("12345678901234567890123")] // 23 characters
+    [InlineData("1234567890123456789012")] // 22 characters
+    [InlineData("123456789012345678901")] // 21 characters
+    [InlineData("12345678901234567890")] // 20 characters
+    [InlineData("1234567890123456789")] // 19 characters
+    [InlineData("123456789012345678")] // 18 characters
+    [InlineData("12345678901234567")] // 17 characters
+    [InlineData("1234567890123456")] // 16 characters
+    [InlineData("123456789012345")] // 15 characters
+    [InlineData("12345678901234")] // 14 characters
+    [InlineData("1234567890123")] // 13 characters
+    [InlineData("123456789012")] // 12 characters
+    [InlineData("12345678901")] // 11 characters
+    [InlineData("1234567890")] // 10 characters
+    [InlineData("123456789")] // 9 characters
+    [InlineData("12345678")] // 8 characters
+    [InlineData("1234567")] // 7 characters
+    [InlineData("123456")] // 6 characters
+    [InlineData("12345")] // 5 characters
+    [InlineData("1234")] // 4 characters
+    [InlineData("123")] // 3 characters
+    [InlineData("12")] // 2 characters
+    [InlineData("1")] // 1 character
+    public void Validate_WithTooShortBotToken_ShouldReturnFailure(string shortToken)
+    {
+        // Arrange
+        var settings = CreateValidTelegramBotSettings();
+        settings.BotToken = shortToken;
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeFalse();
+        result.Failed.Should().BeTrue();
+        result.FailureMessage.Should().Contain("Telegram bot token must be at least 40 characters");
+    }
+
+    [Theory]
+    [InlineData("1234567890123456789012345678901234567890")] // 40 characters
+    [InlineData("12345678901234567890123456789012345678901")] // 41 characters
+    [InlineData("123456789012345678901234567890123456789012")] // 42 characters
+    [InlineData("1234567890123456789012345678901234567890123")] // 43 characters
+    [InlineData("12345678901234567890123456789012345678901234")] // 44 characters
+    [InlineData("123456789012345678901234567890123456789012345")] // 45 characters
+    [InlineData("1234567890123456789012345678901234567890123456")] // 46 characters
+    [InlineData("12345678901234567890123456789012345678901234567")] // 47 characters
+    [InlineData("123456789012345678901234567890123456789012345678")] // 48 characters
+    [InlineData("1234567890123456789012345678901234567890123456789")] // 49 characters
+    [InlineData("12345678901234567890123456789012345678901234567890")] // 50 characters
+    public void Validate_WithValidLengthBotToken_ShouldReturnSuccess(string validToken)
+    {
+        // Arrange
+        var settings = CreateValidTelegramBotSettings();
+        settings.BotToken = validToken;
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeTrue();
+        result.Failed.Should().BeFalse();
+        result.FailureMessage.Should().BeNullOrEmpty();
+    }
+
+    [Theory]
+    [InlineData("1234567890123456789012345678901234567890")]
+    [InlineData("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz")]
+    [InlineData("12345678901234567890123456789012345678901234567890")]
+    [InlineData("abcdefghijklmnopqrstuvwxyz12345678901234567890")]
+    [InlineData("123456789012345678901234567890123456789012345678901234567890")]
+    public void Validate_WithVariousValidTokens_ShouldReturnSuccess(string validToken)
+    {
+        // Arrange
+        var settings = CreateValidTelegramBotSettings();
+        settings.BotToken = validToken;
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeTrue();
+        result.Failed.Should().BeFalse();
+        result.FailureMessage.Should().BeNullOrEmpty();
+    }
+
+    [Fact]
+    public void Validate_WithNullSettings_ShouldThrowException()
+    {
+        // Arrange & Act & Assert
+        var act = () => _validator.Validate(null, null!);
+        act.Should().Throw<NullReferenceException>();
+    }
+
+    [Fact]
+    public void ValidateOptionsResult_Success_ShouldHaveCorrectProperties()
+    {
+        // Arrange
+        var settings = CreateValidTelegramBotSettings();
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeTrue();
+        result.Failed.Should().BeFalse();
+        result.FailureMessage.Should().BeNullOrEmpty();
+    }
+
+    [Fact]
+    public void ValidateOptionsResult_Failure_ShouldHaveCorrectProperties()
+    {
+        // Arrange
+        var settings = new TelegramBotSettings { BotToken = string.Empty };
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeFalse();
+        result.Failed.Should().BeTrue();
+        result.FailureMessage.Should().NotBeNullOrEmpty();
+        result.FailureMessage.Should().Contain("Telegram bot token is required");
+    }
+
+    [Fact]
+    public void Validator_ShouldImplementIValidateOptions()
+    {
+        // Arrange & Act
+        var validator = new TelegramBotSettingsValidator();
+
+        // Assert
+        validator.Should().BeAssignableTo<IValidateOptions<TelegramBotSettings>>();
+    }
+
+    [Fact]
+    public void Validate_WithVeryLongValidToken_ShouldReturnSuccess()
+    {
+        // Arrange
+        var settings = CreateValidTelegramBotSettings();
+        settings.BotToken = new string('A', 1000); // Very long token
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeTrue();
+        result.Failed.Should().BeFalse();
+        result.FailureMessage.Should().BeNullOrEmpty();
+    }
+
+    [Fact]
+    public void Validate_WithTokenContainingSpecialCharacters_ShouldReturnSuccess()
+    {
+        // Arrange
+        var settings = CreateValidTelegramBotSettings();
+        settings.BotToken = "1234567890123456789012345678901234567890!@#$%^&*()";
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeTrue();
+        result.Failed.Should().BeFalse();
+        result.FailureMessage.Should().BeNullOrEmpty();
+    }
+
+    [Fact]
+    public void Validate_WithTokenContainingSpaces_ShouldReturnSuccess()
+    {
+        // Arrange
+        var settings = CreateValidTelegramBotSettings();
+        settings.BotToken = "1234567890123456789012345678901234567890 ";
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeTrue();
+        result.Failed.Should().BeFalse();
+        result.FailureMessage.Should().BeNullOrEmpty();
+    }
+
+    [Fact]
+    public void Validate_WithTokenContainingUnicodeCharacters_ShouldReturnSuccess()
+    {
+        // Arrange
+        var settings = CreateValidTelegramBotSettings();
+        settings.BotToken = "1234567890123456789012345678901234567890абвгд";
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeTrue();
+        result.Failed.Should().BeFalse();
+        result.FailureMessage.Should().BeNullOrEmpty();
+    }
+
+    [Fact]
+    public void Validate_WithExactMinimumLengthToken_ShouldReturnSuccess()
+    {
+        // Arrange
+        var settings = CreateValidTelegramBotSettings();
+        settings.BotToken = "1234567890123456789012345678901234567890"; // Exactly 40 characters
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeTrue();
+        result.Failed.Should().BeFalse();
+        result.FailureMessage.Should().BeNullOrEmpty();
+    }
+
+    [Fact]
+    public void Validate_WithOneCharacterLessThanMinimum_ShouldReturnFailure()
+    {
+        // Arrange
+        var settings = CreateValidTelegramBotSettings();
+        settings.BotToken = "123456789012345678901234567890123456789"; // 39 characters
+
+        // Act
+        var result = _validator.Validate(null, settings);
+
+        // Assert
+        result.Succeeded.Should().BeFalse();
+        result.Failed.Should().BeTrue();
+        result.FailureMessage.Should().Contain("Telegram bot token must be at least 40 characters");
+    }
+
+    private static TelegramBotSettings CreateValidTelegramBotSettings()
+    {
+        return new TelegramBotSettings
+        {
+            BotToken = "1234567890123456789012345678901234567890", // 40 characters
+        };
    }
 }