public function testEncodeDecode() { $this->assertEquals(21, Hex::decode(Hex::encode(21))); $this->assertEquals(21212121, Hex::decode(Hex::encode(21212121))); $this->assertEquals('ABC', Hex::dataDecode(Hex::dataEncode('ABC'))); $this->assertEquals('hello world', Hex::dataDecode(Hex::dataEncode('hello world'))); }