public function testContainsOnlyTheSpecifiedRange()
{
$generator = CharacterGenerator::ascii();
$this->assertTrue($generator->contains(GeneratedValue::fromJustValue("")));
$this->assertTrue($generator->contains(GeneratedValue::fromJustValue("A")));
$this->assertTrue($generator->contains(GeneratedValue::fromJustValue("b")));
$this->assertFalse($generator->contains(GeneratedValue::fromJustValue("é")));
}