public function testEmptyTemperatureAfterChanging() { $Temperature = new Temperature(13); $Temperature->setInPreferredUnit(null); $this->assertTrue($Temperature->isEmpty()); $this->assertNull($Temperature->value()); $this->assertNull($Temperature->celsius()); $this->assertNull($Temperature->fahrenheit()); }
/** * Value * @return float|null [°C] */ public function value() { return $this->AdjustedTemperature->value(); }