public function testKelvin()
{
$Temp = new Temperature(300, Temperature::KELVIN);
$this->assertEquals(300, $Temp->value());
$this->assertEquals('K', $Temp->unit());
$this->assertEquals('300 K', $Temp->asString());
$this->assertFalse($Temp->isUnknown());
$Temp->toCelsius();
$this->assertEquals('27 °C', $Temp->asString());
$Temp->setTemperature(7);
$Temp->toKelvin();
$this->assertEquals(280.15, $Temp->value());
}
