class TestSpec extends FlatSpec {   // vlastni test
    val t = new Test    // moje testovana trida

    t.factorial(0) should equal (1)
    t.factorial(1) should equal (1)
    t.factorial(5) should equal (120)

    t.getPrimesLessThan(10) should contain only (2, 3, 5, 7)
    t.getPrimesLessThan(20) should contain only (2, 3, 5, 7, 11, 13, 17, 19)
}