import groovy.transform.EqualsAndHashCode
import org.junit.Test
import static java.lang.System.currentTimeMillis as now

class UniqueTest {
  @Test
    void "Check if unique (10.000 items) exceeds 2 seconds"() {
        def users = createUsers(10000)
        long a = now()
        assert Uniquer.unique(users) instanceof List
        assert now() - a < 2000
    }

    @Test
    void "Check if result is correct"() {
        def users = createUsers(10000)
        def customUniqueUsers = Uniquer.unique(users)
        println customUniqueUsers.size()
        def uniqueUsers = users.unique()
        assert customUniqueUsers.size() == uniqueUsers.size()
        customUniqueUsers.each {
            assert customUniqueUsers.contains(it)
        }
    }

    static List<User> createUsers(int times) {
        List<User> users = []
        Random rand = new Random()
        times.times { byte[] a = new byte[2]; rand.nextBytes(a); users.add(new User(id: new String(a))) }
        users
    }
}

@EqualsAndHashCode
class User {
    String id
}