package com.example.torus

import com.example.torus.id.UuidV7
import java.util.UUID
import org.junit.Assert.assertEquals
import org.junit.Assert.assertTrue
import org.junit.Test

class UuidV7Test {
    @Test
    fun generate_isVersion7Rfc4122() {
        val uuid = UuidV7.generate()
        assertEquals(7, uuid.version())
        assertEquals(2, uuid.variant())
    }

    @Test
    fun generate_isUniqueAndTimeOrdered() {
        val ids = List(256) { UuidV7.generateString() }
        assertEquals(ids.size, ids.toSet().size)
        assertEquals(ids.sorted(), ids)
        ids.forEach { value ->
            val uuid = UUID.fromString(value)
            assertEquals(7, uuid.version())
            assertEquals(2, uuid.variant())
        }
    }
}