Unable to run any Junit4 tests – InvalidTestClassError: Invalid test class

I am trying to run Junit4 tests and I am unable to run it. I have the following dependency installed

<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.13.2</version>
    <scope>test</scope>
</dependency>

My test class looks like this

package model.validators;

import org.junit.Assert;
import org.junit.Test;

import java.util.Arrays;
import java.util.List;

class UserValidatorTest {

    @Test
    public void shouldReturnTrueForValidPhoneNumbers() {
        List<String> phoneNumbers = Arrays.asList(
                "9876543210",
                "7777543210"
        );
        boolean result = UserValidator.validateUserPhoneNumbers(phoneNumbers);

        Assert.assertTrue(result);
    }
}

When I try to run this test, I get the following error

org.junit.runners.model.InvalidTestClassError: Invalid test class 'model.validators.UserValidatorTest':

I am using IntellijIdea. Any idea what is going wrong here ? TIA

Tried changing dependencies, reloading maven project, setting the correct classpath in Junit Run configurations

>Solution :

I can see that your class UserValidatorTest is not public. On making your class public, you will be able to run the tests.

package model.validators;

import org.junit.Assert;
import org.junit.Test;

import java.util.Arrays;
import java.util.List;

public class UserValidatorTest {

    @Test
    public void shouldReturnTrueForValidPhoneNumbers() {
        List<String> phoneNumbers = Arrays.asList(
                "9876543210",
                "7777543210"
        );
        boolean result = UserValidator.validateUserPhoneNumbers(phoneNumbers);

        Assert.assertTrue(result);
    }
}