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VisaApiTests/Tests/Application/Validation/Applicants/NameModelValidatorTests.cs

@@ -0,0 +1,170 @@
+using System.Text;
+using ApplicationLayer.Services.Applicants.Models;
+using ApplicationLayer.Services.Applicants.Models.Validation;
+using Domains;
+using FluentAssertions;
+using FluentValidation;
+using VisaApi.Fakers.Applicants.Requests;
+using Xunit;
+
+namespace VisaApi.Tests.Application.Validation.Applicants;
+
+public class NameModelValidatorTests
+{
+    private readonly static IValidator<NameModel> validator = new NameModelValidator();
+    private readonly static NameModelFaker faker = new();
+
+    /// <summary>
+    /// Test for <see cref="NameModel"/> validator that should throw for empty first name
+    /// </summary>
+    [Fact]
+    private async Task ValidateForEmptyFirstNameShouldThrow()
+    {
+        var name = faker.Generate();
+        name.FirstName = null!;
+
+        var result = await validator.ValidateAsync(name);
+
+        result.Errors.Where(error => error.PropertyName == nameof(name.FirstName))
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="NameModel"/> validator that should throw for empty surname
+    /// </summary>
+    [Fact]
+    private async Task ValidateForEmptySurnameShouldThrow()
+    {
+        var name = faker.Generate();
+        name.Surname = null!;
+
+        var result = await validator.ValidateAsync(name);
+
+        result.Errors.Where(error => error.PropertyName == nameof(name.Surname))
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="NameModel"/> validator that should return no errors for empty patronymic
+    /// </summary>
+    [Fact]
+    private async Task ValidateForEmptyPatronymicShouldReturnNoErrors()
+    {
+        var name = faker.Generate();
+        name.Patronymic = null;
+
+        var result = await validator.ValidateAsync(name);
+
+        result.Errors.Where(error => error.PropertyName == nameof(name.Patronymic))
+            .Should().BeEmpty();
+    }
+
+    /// <summary>
+    /// Test for <see cref="NameModel"/> validator that should return error for too long first name
+    /// </summary>
+    [Fact]
+    private async Task ValidateForLongFirstNameShouldReturnError()
+    {
+        var name = faker.Generate();
+        var stringBuilder = new StringBuilder();
+        stringBuilder.Append('h', ConfigurationConstraints.NameLength + 1);
+        name.FirstName = stringBuilder.ToString();
+
+        var result = await validator.ValidateAsync(name);
+
+        result.Errors.Where(error => error.PropertyName == nameof(name.FirstName))
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="NameModel"/> validator that should return error for too long surname
+    /// </summary>
+    [Fact]
+    private async Task ValidateForLongSurnameShouldReturnError()
+    {
+        var name = faker.Generate();
+        var stringBuilder = new StringBuilder();
+        stringBuilder.Append('h', ConfigurationConstraints.NameLength + 1);
+        name.Surname = stringBuilder.ToString();
+
+        var result = await validator.ValidateAsync(name);
+
+        result.Errors.Where(error => error.PropertyName == nameof(name.Surname))
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="NameModel"/> validator that should return error for too long patronymic
+    /// </summary>
+    [Fact]
+    private async Task ValidateForLongPatronymicShouldReturnError()
+    {
+        var name = faker.Generate();
+        var stringBuilder = new StringBuilder();
+        stringBuilder.Append('h', ConfigurationConstraints.NameLength + 1);
+        name.Patronymic = stringBuilder.ToString();
+
+        var result = await validator.ValidateAsync(name);
+
+        result.Errors.Where(error => error.PropertyName == nameof(name.Patronymic))
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="NameModel"/> validator that should return error for not valid firstname
+    /// </summary>
+    [Fact]
+    private async Task ValidateForNotValidFirstNameShouldReturnError()
+    {
+        var name = faker.Generate();
+        name.FirstName = "&&7!**|";
+
+        var result = await validator.ValidateAsync(name);
+
+        result.Errors.Where(error => error.PropertyName == nameof(name.FirstName))
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="NameModel"/> validator that should return error for not valid surname
+    /// </summary>
+    [Fact]
+    private async Task ValidateForNotValidSurnameShouldReturnError()
+    {
+        var name = faker.Generate();
+        name.Surname = "&&7!**|";
+
+        var result = await validator.ValidateAsync(name);
+
+        result.Errors.Where(error => error.PropertyName == nameof(name.Surname))
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="NameModel"/> validator that should return error for not valid patronymic
+    /// </summary>
+    [Fact]
+    private async Task ValidateForNotValidPatronymicShouldReturnError()
+    {
+        var name = faker.Generate();
+        name.Patronymic = "&&7!**|";
+
+        var result = await validator.ValidateAsync(name);
+
+        result.Errors.Where(error => error.PropertyName == nameof(name.Patronymic))
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="NameModel"/> validator that should return no errors for valid name
+    /// </summary>
+    [Fact]
+    private async Task ValidateForValidNameShouldReturnNoErrors()
+    {
+        var name = faker.Generate();
+
+        var result = await validator.ValidateAsync(name);
+
+        result.Errors.Should().BeEmpty();
+    }
+}

VisaApiTests/Tests/Application/Validation/Applicants/PassportModelValidatorTests.cs

@@ -0,0 +1,174 @@
+using System.Text;
+using ApplicationLayer.InfrastructureServicesInterfaces;
+using ApplicationLayer.Services.Applicants.Models;
+using ApplicationLayer.Services.Applicants.Models.Validation;
+using Domains;
+using FluentAssertions;
+using FluentValidation;
+using VisaApi.Fakers.Applicants.Requests;
+using VisaApi.Services;
+using Xunit;
+
+namespace VisaApi.Tests.Application.Validation.Applicants;
+
+public class PassportModelValidatorTests
+{
+    private readonly static IDateTimeProvider dateTimeProvider = new TestDateTimeProvider();
+    private readonly static IValidator<PassportModel> validator = new PassportModelValidator(dateTimeProvider);
+    private readonly static PassportModelFaker faker = new();
+
+    /// <summary>
+    /// Test for <see cref="PassportModel"/> validator that should return error for empty number
+    /// </summary>
+    [Fact]
+    private async Task ValidateForEmptyNumberShouldReturnError()
+    {
+        var model = faker.Generate();
+        model.Number = string.Empty;
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == nameof(model.Number))
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PassportModel"/> validator that should return error for too long number
+    /// </summary>
+    [Fact]
+    private async Task ValidateForLongNumberShouldReturnError()
+    {
+        var model = faker.Generate();
+        var stringBuilder = new StringBuilder();
+        stringBuilder.Append('d', ConfigurationConstraints.PassportNumberLength + 1);
+        model.Number = stringBuilder.ToString();
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == nameof(model.Number))
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PassportModel"/> validator that should return error for not valid number
+    /// </summary>
+    [Fact]
+    private async Task ValidateForNotValidNumberShouldReturnError()
+    {
+        var model = faker.Generate();
+        model.Number = "&?%$24asd\\]|";
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == nameof(model.Number))
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PassportModel"/> validator that should return error for empty issuer
+    /// </summary>
+    [Fact]
+    private async Task ValidateForEmptyIssuerShouldReturnError()
+    {
+        var model = faker.Generate();
+        model.Issuer = string.Empty;
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == nameof(model.Issuer))
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PassportModel"/> validator that should return error for too long issuer
+    /// </summary>
+    [Fact]
+    private async Task ValidateForLongIssuerShouldReturnError()
+    {
+        var model = faker.Generate();
+        var stringBuilder = new StringBuilder();
+        stringBuilder.Append('d', ConfigurationConstraints.IssuerNameLength + 1);
+        model.Issuer = stringBuilder.ToString();
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == nameof(model.Issuer))
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PassportModel"/> validator that should return error for not valid issuer
+    /// </summary>
+    [Fact]
+    private async Task ValidateForNotValidIssuerShouldReturnError()
+    {
+        var model = faker.Generate();
+        model.Issuer = "&?%$24asd\\]|";
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == nameof(model.Issuer))
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PassportModel"/> validator that should return error for expired passport
+    /// </summary>
+    [Fact]
+    private async Task ValidateForExpiredPassportShouldReturnError()
+    {
+        var model = faker.Generate();
+        model.ExpirationDate = dateTimeProvider.Now().AddDays(-10);
+        model.IssueDate = model.ExpirationDate.AddDays(-10);
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == nameof(model.ExpirationDate))
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PassportModel"/> validator that should return error for passport from future
+    /// </summary>
+    [Fact]
+    private async Task ValidateForPassportFromFutureShouldReturnError()
+    {
+        var model = faker.Generate();
+        model.ExpirationDate = dateTimeProvider.Now().AddDays(10);
+        model.IssueDate = model.ExpirationDate.AddDays(-3);
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == nameof(model.IssueDate))
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PassportModel"/> validator that should return error for passport that expired before issue
+    /// </summary>
+    [Fact]
+    private async Task ValidateForPassportExpiredBeforeIssueShouldReturnError()
+    {
+        var model = faker.Generate();
+        model.ExpirationDate = dateTimeProvider.Now().AddDays(10);
+        model.IssueDate = model.ExpirationDate.AddDays(3);
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == nameof(model.IssueDate))
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PassportModel"/> validator that should return no errors for valid passport
+    /// </summary>
+    [Fact]
+    private async Task ValidateForValidPassportShouldReturnNoErrors()
+    {
+        var model = faker.Generate();
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Should().BeEmpty();
+    }
+}

VisaApiTests/Tests/Application/Validation/Applicants/PlaceOfWorkModelValidatorTests.cs

@@ -0,0 +1,353 @@
+using System.Text;
+using ApplicationLayer.Services.Applicants.Models;
+using ApplicationLayer.Services.Applicants.Models.Validation;
+using Domains;
+using FluentAssertions;
+using FluentValidation;
+using VisaApi.Fakers.Applicants.Requests;
+using Xunit;
+
+namespace VisaApi.Tests.Application.Validation.Applicants;
+
+public class PlaceOfWorkModelValidatorTests
+{
+    private readonly static IValidator<PlaceOfWorkModel> validator = new PlaceOfWorkModelValidator();
+    private readonly static PlaceOfWorkModelFaker faker = new();
+
+    /// <summary>
+    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for empty phone num
+    /// </summary>
+    [Fact]
+    private async Task ValidateForEmptyPhoneNumShouldReturnError()
+    {
+        var model = faker.Generate();
+        model.PhoneNum = string.Empty;
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == nameof(model.PhoneNum))
+            .Should().NotBeEmpty();
+    }
+
+    /// <summary>
+    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for long phone num
+    /// </summary>
+    [Fact]
+    private async Task ValidateForLongPhoneNumShouldReturnError()
+    {
+        var model = faker.Generate();
+        var stringBuilder = new StringBuilder();
+        stringBuilder.Append('8', ConfigurationConstraints.PhoneNumberLength + 1);
+        model.PhoneNum = stringBuilder.ToString();
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == nameof(model.PhoneNum))
+            .Should().NotBeEmpty();
+    }
+
+    /// <summary>
+    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for short phone num
+    /// </summary>
+    [Fact]
+    private async Task ValidateForShortPhoneNumShouldReturnError()
+    {
+        var model = faker.Generate();
+        var stringBuilder = new StringBuilder();
+        stringBuilder.Append('8', ConfigurationConstraints.PhoneNumberMinLength - 1);
+        model.PhoneNum = stringBuilder.ToString();
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == nameof(model.PhoneNum))
+            .Should()
+            .HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for not valid phone num
+    /// </summary>
+    [Fact]
+    private async Task ValidateForNotValidPhoneNumShouldReturnError()
+    {
+        var model = faker.Generate();
+        var stringBuilder = new StringBuilder();
+        stringBuilder.Append('a', ConfigurationConstraints.PhoneNumberMinLength);
+        model.PhoneNum = stringBuilder.ToString();
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == nameof(model.PhoneNum))
+            .Should()
+            .HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PlaceOfWorkModel"/> validator that should throw exception for null address
+    /// </summary>
+    [Fact]
+    private async Task ValidateForEmptyAddressShouldThrow()
+    {
+        var model = faker.Generate();
+        model.Address = null!;
+        NullReferenceException? result = null;
+
+        try
+        {
+            await validator.ValidateAsync(model);
+        }
+        catch (Exception e)
+        {
+            result = e as NullReferenceException;
+        }
+
+        result.Should().NotBeNull();
+    }
+
+    /// <summary>
+    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for empty Country
+    /// </summary>
+    [Fact]
+    private async Task ValidateForEmptyCountryShouldReturnError()
+    {
+        var model = faker.Generate();
+        model.Address.Country = "";
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == "Address.Country")
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for too long Country
+    /// </summary>
+    [Fact]
+    private async Task ValidateForLongCountryShouldReturnError()
+    {
+        var model = faker.Generate();
+        var stringBuilder = new StringBuilder();
+        stringBuilder.Append('a', ConfigurationConstraints.CountryNameLength + 1);
+        model.Address.Country = stringBuilder.ToString();
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == "Address.Country")
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for not valid Country
+    /// </summary>
+    [Fact]
+    private async Task ValidateForNotValidCountryShouldReturnError()
+    {
+        var model = faker.Generate();
+        model.Address.Country = "|&%";
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == "Address.Country")
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for empty City
+    /// </summary>
+    [Fact]
+    private async Task ValidateForEmptyCityShouldReturnError()
+    {
+        var model = faker.Generate();
+        model.Address.City = "";
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == "Address.City")
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for too long city
+    /// </summary>
+    [Fact]
+    private async Task ValidateForLongCityShouldReturnError()
+    {
+        var model = faker.Generate();
+        var stringBuilder = new StringBuilder();
+        stringBuilder.Append('a', ConfigurationConstraints.CityNameLength + 1);
+        model.Address.City = stringBuilder.ToString();
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == "Address.City")
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for not valid city
+    /// </summary>
+    [Fact]
+    private async Task ValidateForNotValidCityShouldReturnError()
+    {
+        var model = faker.Generate();
+        model.Address.City = "|&%";
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == "Address.City")
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for empty street
+    /// </summary>
+    [Fact]
+    private async Task ValidateForEmptyStreetShouldReturnError()
+    {
+        var model = faker.Generate();
+        model.Address.Street = "";
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == "Address.Street")
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for too long street
+    /// </summary>
+    [Fact]
+    private async Task ValidateForLongStreetShouldReturnError()
+    {
+        var model = faker.Generate();
+        var stringBuilder = new StringBuilder();
+        stringBuilder.Append('a', ConfigurationConstraints.StreetNameLength + 1);
+        model.Address.Street = stringBuilder.ToString();
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == "Address.Street")
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for not valid street
+    /// </summary>
+    [Fact]
+    private async Task ValidateForNotValidStreetShouldReturnError()
+    {
+        var model = faker.Generate();
+        model.Address.Street = "|&%";
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == "Address.Street")
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for empty building        /// </summary>
+    [Fact]
+    private async Task ValidateForEmptyBuildingShouldReturnError()
+    {
+        var model = faker.Generate();
+        model.Address.Building = "";
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == "Address.Building")
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for too long building
+    /// </summary>
+    [Fact]
+    private async Task ValidateForLongBuildingShouldReturnError()
+    {
+        var model = faker.Generate();
+        var stringBuilder = new StringBuilder();
+        stringBuilder.Append('a', ConfigurationConstraints.BuildingNumberLength + 1);
+        model.Address.Building = stringBuilder.ToString();
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == "Address.Building")
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for not valid building
+    /// </summary>
+    [Fact]
+    private async Task ValidateForNotValidBuildingShouldReturnError()
+    {
+        var model = faker.Generate();
+        model.Address.Building = "|&%";
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == "Address.Building")
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for empty name
+    /// </summary>
+    [Fact]
+    private async Task ValidateForEmptyNameShouldReturnError()
+    {
+        var model = faker.Generate();
+        model.Name = "";
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == nameof(model.Name))
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for too long name
+    /// </summary>
+    [Fact]
+    private async Task ValidateForTooLongNameShouldReturnError()
+    {
+        var model = faker.Generate();
+        var stringBuilder = new StringBuilder();
+        stringBuilder.Append('g', ConfigurationConstraints.PlaceOfWorkNameLength + 1);
+        model.Name = stringBuilder.ToString();
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == nameof(model.Name))
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return error for not valid name
+    /// </summary>
+    [Fact]
+    private async Task ValidateForNotValidNameShouldReturnError()
+    {
+        var model = faker.Generate();
+        model.Name = "@$%&|";
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Where(error => error.PropertyName == nameof(model.Name))
+            .Should().HaveCount(1);
+    }
+
+    /// <summary>
+    /// Test for <see cref="PlaceOfWorkModel"/> validator that should return no errors for valid model
+    /// </summary>
+    [Fact]
+    private async Task ValidateForValidShouldReturnNoErrors()
+    {
+        var model = faker.Generate();
+
+        var result = await validator.ValidateAsync(model);
+
+        result.Errors.Should().BeEmpty();
+    }
+}

VisaApiTests/Tests/Application/Validation/Auth/AuthDataValidatorTests.cs

@@ -0,0 +1,113 @@
+using System.Text;
+using ApplicationLayer.Services.AuthServices.Common;
+using ApplicationLayer.Services.AuthServices.Requests.Validation;
+using Domains;
+using FluentAssertions;
+using FluentValidation;
+using VisaApi.Fakers.Auth;
+using Xunit;
+
+namespace VisaApi.Tests.Application.Validation.Auth;
+
+public class AuthDataValidatorTests
+{
+    private readonly static IValidator<AuthData> validator = new AuthDataValidator();
+    private readonly static AuthDataFaker faker = new();
+
+    /// <summary>
+    /// Test for <see cref="AuthData"/> validator that should return validation error for invalid email
+    /// </summary>
+    [Fact]
+    private async Task ValidateForInvalidEmailShouldReturnError()
+    {
+            var authData = faker.Generate();
+            authData.Email = "alsdas'dsa";
+
+            var result = await validator.ValidateAsync(authData);
+
+            result.Errors.Should()
+                .HaveCount(1)
+                .And.Contain(error => error.PropertyName == nameof(authData.Email));
+        }
+
+    /// <summary>
+    /// Test for <see cref="AuthData"/> validator that should return validation error for too long email
+    /// </summary>
+    [Fact]
+    private async Task ValidateForLongEmailShouldReturnError()
+    {
+            var authData = faker.Generate();
+            var stringBuilder = new StringBuilder();
+            stringBuilder.Append('d', ConfigurationConstraints.EmailLength);
+            stringBuilder.Append("@mail.ru");
+            authData.Email = stringBuilder.ToString();
+
+            var result = await validator.ValidateAsync(authData);
+
+            result.Errors.Should()
+                .HaveCount(1)
+                .And.Contain(error => error.PropertyName == nameof(authData.Email));
+        }
+
+    /// <summary>
+    /// Test for <see cref="AuthData"/> validator that should return no errors for valid email
+    /// </summary>
+    [Fact]
+    private async Task ValidateForValidEmailShouldReturnNoError()
+    {
+            var authData = faker.Generate();
+
+            var result = await validator.ValidateAsync(authData);
+
+            result.Errors.Where(error => error.PropertyName == nameof(authData.Email))
+                .Should().BeEmpty();
+        }
+
+    /// <summary>
+    /// Test for <see cref="AuthData"/> validator that should return validation error for empty password
+    /// </summary>
+    [Fact]
+    private async Task ValidateForEmptyPasswordShouldReturnError()
+    {
+            var authData = faker.Generate();
+            authData.Password = string.Empty;
+
+            var result = await validator.ValidateAsync(authData);
+
+            result.Errors.Should()
+                .HaveCount(1)
+                .And.Contain(error => error.PropertyName == nameof(authData.Password));
+        }
+
+    /// <summary>
+    /// Test for <see cref="AuthData"/> validator that should return validation error for too long password
+    /// </summary>
+    [Fact]
+    private async Task ValidateForLongPasswordShouldReturnError()
+    {
+            var authData = faker.Generate();
+            var stringBuilder = new StringBuilder();
+            stringBuilder.Append('d', ConfigurationConstraints.PasswordLength + 1);
+            authData.Password = stringBuilder.ToString();
+
+            var result = await validator.ValidateAsync(authData);
+
+            result.Errors.Should()
+                .HaveCount(1)
+                .And.Contain(error => error.PropertyName == nameof(authData.Password));
+        }
+
+    /// <summary>
+    /// Test for <see cref="AuthData"/> validator that should return no errors for valid password
+    /// </summary>
+    [Fact]
+    private async Task ValidateForValidPasswordShouldReturnNoError()
+    {
+            var authData = faker.Generate();
+
+            var result = await validator.ValidateAsync(authData);
+
+            result.Errors.Where(error => error.PropertyName == nameof(authData.Password))
+                .Should().BeEmpty();
+        }
+}

VisaApiTests/Tests/Application/Validation/Auth/RegisterApplicantRequestValidatorTests.cs

@@ -0,0 +1,73 @@
+using ApplicationLayer.Services.Applicants.Models.Validation;
+using ApplicationLayer.Services.AuthServices.Requests;
+using ApplicationLayer.Services.AuthServices.Requests.Validation;
+using Domains.ApplicantDomain;
+using FluentValidation.TestHelper;
+using Infrastructure.Database.Users.Repositories;
+using VisaApi.Fakers.Auth;
+using VisaApi.Services;
+using VisaApi.Tests.Infrastructure.Database;
+using Xunit;
+
+namespace VisaApi.Tests.Application.Validation.Auth
+{
+    public class RegisterApplicantRequestValidatorTests
+    {
+        private readonly RegisterApplicantRequestValidator validator;
+        private RegisterApplicantRequestFaker requestFaker;
+
+        public RegisterApplicantRequestValidatorTests()
+        {
+            var context = InMemoryContextProvider.GetDbContext();
+            var dateTimeProvider = new TestDateTimeProvider();
+            requestFaker = new(dateTimeProvider);
+            validator = new(
+                dateTimeProvider,
+                new NameModelValidator(),
+                new RegisterRequestValidator(new UsersRepository(context, context), new AuthDataValidator()),
+                new PassportModelValidator(dateTimeProvider),
+                new PlaceOfWorkModelValidator()
+            );
+        }
+
+        /// <summary>
+        /// Validation should return no errors
+        /// </summary>
+        [Fact]
+        public async Task ValidateShouldWork()
+        {
+            var request = requestFaker.Generate();
+
+            var result = await validator.TestValidateAsync(request);
+
+            result.ShouldNotHaveAnyValidationErrors();
+        }
+
+        /// <summary>
+        /// Validation should return errors
+        /// </summary>
+        [Fact]
+        public async Task ValidateShouldFail()
+        {
+            var request = new RegisterApplicantRequest
+            {
+                BirthDate = DateTime.Now,
+                Citizenship = string.Empty,
+                CitizenshipByBirth = string.Empty,
+                CityOfBirth = string.Empty,
+                CountryOfBirth = string.Empty,
+                Gender = (Gender)123123,
+                JobTitle = string.Empty,
+                MaritalStatus = (MaritalStatus)123123,
+            };
+
+            var result = await validator.TestValidateAsync(request);
+
+            var properties = request.GetType().GetProperties().Select(x => x.Name).Except([nameof(RegisterApplicantRequest.IsNonResident)]);
+            foreach (var property in properties)
+            {
+                result.ShouldHaveValidationErrorFor(property);
+            }
+        }
+    }
+}

VisaApiTests/Tests/Application/Validation/Auth/RegisterRequestValidatorTests.cs

@@ -0,0 +1,92 @@
+using ApplicationLayer.Services.AuthServices.Common;
+using ApplicationLayer.Services.AuthServices.Requests;
+using ApplicationLayer.Services.AuthServices.Requests.Validation;
+using FluentAssertions;
+using FluentValidation;
+using Infrastructure.Database;
+using Infrastructure.Database.Users.Repositories;
+using VisaApi.Fakers.Auth;
+using VisaApi.Fakers.Users;
+using VisaApi.Tests.Infrastructure.Database;
+using Xunit;
+
+namespace VisaApi.Tests.Application.Validation.Auth;
+
+[Collection(Collections.ContextUsingTestCollection)]
+public class RegisterRequestValidatorTests
+{
+    private readonly static IValidator<AuthData> authDataValidator = new AuthDataValidator();
+    private readonly static RegisterRequestFaker requestFaker = new();
+    private readonly static UserFaker userFaker = new();
+
+    /// <summary>
+    /// Creates validator from context
+    /// </summary>
+    /// <param name="context">db context</param>
+    /// <returns>RegisterRequest validator</returns>
+    private static IValidator<RegisterRequest> GetValidator(DatabaseContext context)
+    {
+            var repository = new UsersRepository(context, context);
+            return new RegisterRequestValidator(repository, authDataValidator);
+        }
+
+    /// <summary>
+    /// Test for <see cref="RegisterRequest"/> validator that should throw for empty auth data
+    /// </summary>
+    [Fact]
+    private async Task ValidateForEmptyAuthDataShouldThrow()
+    {
+            var context = InMemoryContextProvider.GetDbContext();
+            var validator = GetValidator(context);
+            var request = requestFaker.Generate();
+            request.AuthData = null!;
+            NullReferenceException? result = null;
+
+            try
+            {
+                await validator.ValidateAsync(request);
+            }
+            catch (Exception e)
+            {
+                result = e as NullReferenceException;
+            }
+
+            result.Should().NotBeNull();
+        }
+
+    /// <summary>
+    /// Test for <see cref="RegisterRequest"/> validator that should return error for used email
+    /// </summary>
+    [Fact]
+    private async Task ValidateForUsedEmailShouldReturnError()
+    {
+            var context = InMemoryContextProvider.GetDbContext();
+            var validator = GetValidator(context);
+            var user = userFaker.Generate();
+            await context.AddAsync(user);
+            await context.SaveChangesAsync();
+            var request = requestFaker.Generate();
+            request.AuthData.Email = user.Email;
+
+            var result = await validator.ValidateAsync(request);
+
+            result.Errors.Should()
+                .Contain(error => error.PropertyName == nameof(request.AuthData))
+                .And.HaveCount(1);
+        }
+
+    /// <summary>
+    /// Test for <see cref="RegisterRequest"/> validator that should return o errors for valid requests
+    /// </summary>
+    [Fact]
+    private async Task ValidateForValidRequestShouldReturnNoErrors()
+    {
+            var context = InMemoryContextProvider.GetDbContext();
+            var validator = GetValidator(context);
+            var request = requestFaker.Generate();
+
+            var result = await validator.ValidateAsync(request);
+
+            result.Errors.Should().BeEmpty();
+        }
+}

VisaApiTests/Tests/Application/Validation/Users/ChangeUserAuthDataRequestValidationTests.cs

@@ -0,0 +1,48 @@
+using ApplicationLayer.Services.Users.Requests;
+using ApplicationLayer.Services.Users.Requests.Validation;
+using FluentAssertions;
+using FluentValidation;
+using VisaApi.Fakers.Users.Requests;
+using Xunit;
+
+namespace VisaApi.Tests.Application.Validation.Users;
+
+public class ChangeUserAuthDataRequestValidationTests
+{
+    private readonly static IValidator<ChangeUserAuthDataRequest> validator = new ChangeUserAuthDataRequestValidator();
+    private readonly static ChangeUserAuthDataRequestFaker faker = new();
+
+    /// <summary>
+    /// Test for <see cref="ChangeUserAuthDataRequest"/> validator that should throw exception for empty auth data
+    /// </summary>
+    [Fact]
+    private async Task ValidateForEmptyAuthDataShouldThrow()
+    {
+        var request = faker.Generate();
+        request.NewAuthData = null!;
+        NullReferenceException? result = null;
+
+        try
+        {
+            await validator.ValidateAsync(request);
+        }
+        catch (Exception e)
+        {
+            result = e as NullReferenceException;
+        }
+
+        result.Should().NotBeNull();
+    }
+
+    /// <summary>
+    /// Test for <see cref="ChangeUserAuthDataRequest"/> validator that should no errors for valid entity
+    /// </summary>
+    [Fact]
+    private async Task ValidateForValidShouldReturnNoErrors()
+    {
+        var request = faker.Generate();
+        var result = await validator.ValidateAsync(request);
+
+        result.IsValid.Should().BeTrue();
+    }
+}

VisaApiTests/Tests/Application/Validation/VisaApplications/PastVisaModelValidatorTests.cs

@@ -0,0 +1,140 @@
+using System.Text;
+using ApplicationLayer.InfrastructureServicesInterfaces;
+using ApplicationLayer.Services.VisaApplications.Models;
+using ApplicationLayer.Services.VisaApplications.Models.Validation;
+using Domains;
+using FluentAssertions;
+using FluentValidation;
+using VisaApi.Fakers.VisaApplications.Requests;
+using VisaApi.Services;
+using Xunit;
+
+namespace VisaApi.Tests.Application.Validation.VisaApplications
+{
+    public class PastVisaModelValidatorTests
+    {
+        private readonly static IDateTimeProvider dateTimeProvider = new TestDateTimeProvider();
+        private readonly static IValidator<PastVisaModel> validator = new PastVisaModelValidator(dateTimeProvider);
+        private readonly static PastVisaModelFaker faker = new(dateTimeProvider);
+
+        /// <summary>
+        /// Test for <see cref="PastVisaModel"/> validator that should return error for empty expiration date
+        /// </summary>
+        [Fact]
+        private async Task ValidateForEmptyExpirationDateShouldReturnError()
+        {
+            var model = faker.GenerateValid();
+            model.ExpirationDate = new();
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Where(error => error.PropertyName == nameof(model.ExpirationDate))
+                .Should().HaveCount(2); //expected error + error because of expiration date less than issue date
+        }
+
+        /// <summary>
+        /// Test for <see cref="PastVisaModel"/> validator that should return error for expiration date less than issue date
+        /// </summary>
+        [Fact]
+        private async Task ValidateForExpirationDateLessThanIssueDateShouldReturnError()
+        {
+            var model = faker.GenerateValid();
+            model.ExpirationDate = model.IssueDate.AddDays(-4);
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Where(error => error.PropertyName == nameof(model.ExpirationDate))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="PastVisaModel"/> validator that should return error for empty issue date
+        /// </summary>
+        [Fact]
+        private async Task ValidateForEmptyIssueDateShouldReturnError()
+        {
+            var model = faker.GenerateValid();
+            model.IssueDate = new();
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Where(error => error.PropertyName == nameof(model.IssueDate))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="PastVisaModel"/> validator that should return error for issue date greater than current date
+        /// </summary>
+        [Fact]
+        private async Task ValidateForIssueDateGreaterThanCurrentDateShouldReturnError()
+        {
+            var model = faker.GenerateValid();
+            model.IssueDate = dateTimeProvider.Now().AddDays(4);
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Where(error => error.PropertyName == nameof(model.IssueDate))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="PastVisaModel"/> validator that should return error for empty name
+        /// </summary>
+        [Fact]
+        private async Task ValidateForEmptyNameShouldReturnError()
+        {
+            var model = faker.GenerateValid();
+            model.Name = string.Empty;
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Where(error => error.PropertyName == nameof(model.Name))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="PastVisaModel"/> validator that should return error for too long name
+        /// </summary>
+        [Fact]
+        private async Task ValidateForTooLongNameShouldReturnError()
+        {
+            var model = faker.GenerateValid();
+            var stringBuilder = new StringBuilder();
+            stringBuilder.Append('d', ConfigurationConstraints.VisaNameLength + 1);
+            model.Name = stringBuilder.ToString();
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Where(error => error.PropertyName == nameof(model.Name))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="PastVisaModel"/> validator that should return error for not valid name
+        /// </summary>
+        [Fact]
+        private async Task ValidateForNotValidNameShouldReturnError()
+        {
+            var model = faker.GenerateValid();
+            model.Name = "|}{%^&";
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Where(error => error.PropertyName == nameof(model.Name))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="PastVisaModel"/> validator that should return no errors for valid model
+        /// </summary>
+        [Fact]
+        private async Task ValidateForValidShouldReturnNoErrors()
+        {
+            var model = faker.GenerateValid();
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Should().BeEmpty();
+        }
+    }
+}

VisaApiTests/Tests/Application/Validation/VisaApplications/PastVisitModelValidatorTests.cs

@@ -0,0 +1,142 @@
+using System.Text;
+using ApplicationLayer.InfrastructureServicesInterfaces;
+using ApplicationLayer.Services.VisaApplications.Models;
+using ApplicationLayer.Services.VisaApplications.Models.Validation;
+using Domains;
+using FluentAssertions;
+using FluentValidation;
+using VisaApi.Fakers.VisaApplications.Requests;
+using VisaApi.Services;
+using Xunit;
+
+namespace VisaApi.Tests.Application.Validation.VisaApplications
+{
+    public class PastVisitModelValidatorTests
+    {
+        private readonly static IDateTimeProvider dateTimeProvider = new TestDateTimeProvider();
+        private readonly static IValidator<PastVisitModel> validator = new PastVisitModelValidator(dateTimeProvider);
+        private readonly static PastVisitModelFaker faker = new(dateTimeProvider);
+
+        /// <summary>
+        /// Test for <see cref="PastVisitModel"/> validator that should return error for empty start date
+        /// </summary>
+        [Fact]
+        private async Task ValidateForEmptyStartDateShouldReturnError()
+        {
+            var model = faker.GenerateValid();
+            model.StartDate = new();
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Where(error => error.PropertyName == nameof(model.StartDate))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="PastVisitModel"/> validator that should return error for start date greater than end date
+        /// </summary>
+        [Fact]
+        private async Task ValidateForStartDateGreaterThanEndDateShouldReturnError()
+        {
+            var model = faker.GenerateValid();
+            model.EndDate = dateTimeProvider.Now().AddDays(-10);
+            model.StartDate = model.EndDate.AddDays(4);
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Where(error => error.PropertyName == nameof(model.StartDate))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="PastVisitModel"/> validator that should return error for empty end date
+        /// </summary>
+        [Fact]
+        private async Task ValidateForEmptyEndDateShouldReturnError()
+        {
+            var model = faker.GenerateValid();
+            model.EndDate = new();
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Where(error => error.PropertyName == nameof(model.EndDate))
+                .Should().HaveCount(1); //expected error + error because of end date less than start date
+        }
+
+        /// <summary>
+        /// Test for <see cref="PastVisitModel"/> validator that should return error for start date greater than current date
+        /// </summary>
+        [Fact]
+        private async Task ValidateForStartDateGreaterThanCurrentDateShouldReturnError()
+        {
+            var model = faker.GenerateValid();
+            model.StartDate = dateTimeProvider.Now().AddDays(4);
+            model.EndDate = model.StartDate.AddDays(4);
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Where(error => error.PropertyName == nameof(model.StartDate))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="PastVisitModel"/> validator that should return error for empty destination Country
+        /// </summary>
+        [Fact]
+        private async Task ValidateForEmptyDestinationCountryShouldReturnError()
+        {
+            var model = faker.GenerateValid();
+            model.DestinationCountry = string.Empty;
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Where(error => error.PropertyName == nameof(model.DestinationCountry))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="PastVisitModel"/> validator that should return error for too long destination Country
+        /// </summary>
+        [Fact]
+        private async Task ValidateForTooLongDestinationCountryShouldReturnError()
+        {
+            var model = faker.GenerateValid();
+            var stringBuilder = new StringBuilder();
+            stringBuilder.Append('d', ConfigurationConstraints.CountryNameLength + 1);
+            model.DestinationCountry = stringBuilder.ToString();
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Where(error => error.PropertyName == nameof(model.DestinationCountry))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="PastVisitModel"/> validator that should return error for not valid destination Country
+        /// </summary>
+        [Fact]
+        private async Task ValidateForNotValidDestinationCountryShouldReturnError()
+        {
+            var model = faker.GenerateValid();
+            model.DestinationCountry = "|}{%^&";
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Where(error => error.PropertyName == nameof(model.DestinationCountry))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="PastVisitModel"/> validator that should return no errors for valid model
+        /// </summary>
+        [Fact]
+        private async Task ValidateForValidShouldReturnNoErrors()
+        {
+            var model = faker.GenerateValid();
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Should().BeEmpty();
+        }
+    }
+}

VisaApiTests/Tests/Application/Validation/VisaApplications/PermissionToDestCountryModelValidatorTests.cs

@@ -0,0 +1,110 @@
+using System.Text;
+using ApplicationLayer.InfrastructureServicesInterfaces;
+using ApplicationLayer.Services.VisaApplications.Models;
+using ApplicationLayer.Services.VisaApplications.Models.Validation;
+using Domains;
+using FluentAssertions;
+using FluentValidation;
+using VisaApi.Fakers.VisaApplications.Requests;
+using VisaApi.Services;
+using Xunit;
+
+namespace VisaApi.Tests.Application.Validation.VisaApplications
+{
+    public class PermissionToDestCountryModelValidatorTests
+    {
+        private readonly static IDateTimeProvider dateTimeProvider = new TestDateTimeProvider();
+        private readonly static IValidator<PermissionToDestCountryModel> validator = new PermissionToDestCountryModelValidator(dateTimeProvider);
+        private readonly static PermissionToDestCountryModelFaker faker = new(dateTimeProvider);
+
+        /// <summary>
+        /// Test for <see cref="PermissionToDestCountryModel"/> validator that should return error for empty expiration date
+        /// </summary>
+        [Fact]
+        private async Task ValidateForEmptyExpirationDateShouldReturnError()
+        {
+            var model = faker.Generate();
+            model.ExpirationDate = new();
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Where(error => error.PropertyName == nameof(model.ExpirationDate))
+                .Should().HaveCount(2); //expected error + error because of expired
+        }
+
+        /// <summary>
+        /// Test for <see cref="PermissionToDestCountryModel"/> validator that should return error for expiration date less than current date
+        /// </summary>
+        [Fact]
+        private async Task ValidateForExpirationDateLessThanCurrentDateShouldReturnError()
+        {
+            var model = faker.Generate();
+            model.ExpirationDate = dateTimeProvider.Now().AddDays(-1);
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Where(error => error.PropertyName == nameof(model.ExpirationDate))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="PermissionToDestCountryModel"/> validator that should return error for empty issuer
+        /// </summary>
+        [Fact]
+        private async Task ValidateForEmptyIssuerShouldReturnError()
+        {
+            var model = faker.Generate();
+            model.Issuer = string.Empty;
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Where(error => error.PropertyName == nameof(model.Issuer))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="PermissionToDestCountryModel"/> validator that should return error for not valid issuer
+        /// </summary>
+        [Fact]
+        private async Task ValidateForNotValidIssuerShouldReturnError()
+        {
+            var model = faker.Generate();
+            model.Issuer = "}{)(*&*^%#!#!:";
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Where(error => error.PropertyName == nameof(model.Issuer))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="PermissionToDestCountryModel"/> validator that should return error for too long issuer
+        /// </summary>
+        [Fact]
+        private async Task ValidateForTooLongIssuerShouldReturnError()
+        {
+            var model = faker.Generate();
+            var stringBuilder = new StringBuilder();
+            stringBuilder.Append('g', ConfigurationConstraints.IssuerNameLength + 1);
+            model.Issuer = stringBuilder.ToString();
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Where(error => error.PropertyName == nameof(model.Issuer))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="PermissionToDestCountryModel"/> validator that should return no errors for valid model
+        /// </summary>
+        [Fact]
+        private async Task ValidateForValidShouldReturnNoErrors()
+        {
+            var model = faker.Generate();
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Should().BeEmpty();
+        }
+    }
+}

VisaApiTests/Tests/Application/Validation/VisaApplications/ReentryPermitModelValidatorTests.cs

@@ -0,0 +1,110 @@
+using System.Text;
+using ApplicationLayer.InfrastructureServicesInterfaces;
+using ApplicationLayer.Services.VisaApplications.Models;
+using ApplicationLayer.Services.VisaApplications.Models.Validation;
+using Domains;
+using FluentAssertions;
+using FluentValidation;
+using VisaApi.Fakers.VisaApplications.Requests;
+using VisaApi.Services;
+using Xunit;
+
+namespace VisaApi.Tests.Application.Validation.VisaApplications
+{
+    public class ReentryPermitModelValidatorTests
+    {
+        private readonly static IDateTimeProvider dateTimeProvider = new TestDateTimeProvider();
+        private readonly static IValidator<ReentryPermitModel> validator = new ReentryPermitModelValidator(dateTimeProvider);
+        private readonly static ReentryPermitModelFaker faker = new(dateTimeProvider);
+
+        /// <summary>
+        /// Test for <see cref="ReentryPermitModel"/> validator that should return error for empty expiration date
+        /// </summary>
+        [Fact]
+        private async Task ValidateForEmptyExpirationDateShouldReturnError()
+        {
+            var model = faker.Generate();
+            model.ExpirationDate = new();
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Where(error => error.PropertyName == nameof(model.ExpirationDate))
+                .Should().HaveCount(2); //expected error + error because of expired
+        }
+
+        /// <summary>
+        /// Test for <see cref="ReentryPermitModel"/> validator that should return error for expiration date less than current date
+        /// </summary>
+        [Fact]
+        private async Task ValidateForExpirationDateLessThanCurrentDateShouldReturnError()
+        {
+            var model = faker.Generate();
+            model.ExpirationDate = dateTimeProvider.Now().AddDays(-1);
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Where(error => error.PropertyName == nameof(model.ExpirationDate))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="ReentryPermitModel"/> validator that should return error for empty number
+        /// </summary>
+        [Fact]
+        private async Task ValidateForEmptyNumberShouldReturnError()
+        {
+            var model = faker.Generate();
+            model.Number = string.Empty;
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Where(error => error.PropertyName == nameof(model.Number))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="ReentryPermitModel"/> validator that should return error for not valid number
+        /// </summary>
+        [Fact]
+        private async Task ValidateForNotValidNumberShouldReturnError()
+        {
+            var model = faker.Generate();
+            model.Number = "}{)(*&*^%#!#!:";
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Where(error => error.PropertyName == nameof(model.Number))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="ReentryPermitModel"/> validator that should return error for too long number
+        /// </summary>
+        [Fact]
+        private async Task ValidateForTooLongNumberShouldReturnError()
+        {
+            var model = faker.Generate();
+            var stringBuilder = new StringBuilder();
+            stringBuilder.Append('g', ConfigurationConstraints.ReentryPermitNumberLength + 1);
+            model.Number = stringBuilder.ToString();
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Where(error => error.PropertyName == nameof(model.Number))
+                .Should().HaveCount(1);
+        }
+
+        /// <summary>
+        /// Test for <see cref="ReentryPermitModel"/> validator that should return no errors for valid model
+        /// </summary>
+        [Fact]
+        private async Task ValidateForValidShouldReturnNoErrors()
+        {
+            var model = faker.Generate();
+
+            var result = await validator.ValidateAsync(model);
+
+            result.Errors.Should().BeEmpty();
+        }
+    }
+}