SonarQube ignoring AbstractValidator test classes

Question

SonarQube ignores tests for AbstractValidators (FluentValidation.AspNetCore nuget package). In the coverage section, all RuleFor lines are marked as not covered. What do I need to do, for the tests to be included in the coverage in SonarQube? ReSharper shows the validator as being fully covered by tests.

The validator:

public class UserValidator : AbstractValidator<User>
{
    public UserValidator()
    {
        RuleFor(a => a.Name).NotEmpty();
        RuleFor(a => a.FirstName).NotEmpty();
    }
}

Test class:

public class UserValidatorTests
{
    [Test, TestCaseSource(nameof(User_InvalidData))]
    public async Task ValidationShouldFail(UserAndErrors testData)
    {
        var result = await new UserValidator().TestValidateAsync(testData.User!);

        Assert.IsFalse(result.IsValid);
        Assert.AreEqual(result.Errors.Count, testData.ErrorsCount);
    }

    [Test]
    public async Task ValidationShouldPass()
    {
        var request = new User
        {
            FirstName = "John",
            Name= "Doe"
        };
        var result = await new UserValidator().TestValidateAsync(request);

        Assert.IsTrue(result.IsValid);
        result.ShouldNotHaveAnyValidationErrors();
    }
            
    private static IEnumerable<TestCaseData> User_InvalidData()
    {
        yield return new TestCaseData(new User
        {
            User = new User(),
            ErrorsCount = 2
        });
        yield return new TestCaseData(new User
        {
            User = new User
            {
                Name = "Doe"
            },
            ErrorsCount = 1
        });
        yield return new TestCaseData(new User
        {
            User = new User
            {
                FirstName = "John"
            },
            ErrorsCount = 1
        });
    }       

    public class UserAndErrors
    {
        public User? User { get; set; }
        public int ErrorsCount { get; set; } = 0;
    }
}

User class:

public class User
{
    public string Name { get; set; } = string.Empty;
    public string FirstName { get; set; } = string.Empty;
}

Answer 1

The issue was the fact that the test project did not reference the coverlet.msbuild nuget package. Without it, SonarQube could not run the tests correctly and could not update the code coverage.