schengen-visa/VisaApiTests/Tests/Application/Validation/Users/ChangeUserAuthDataRequestValidationTests.cs

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();
    }
}