class XmlEncoderTest

class XmlEncoderTest extends UnitTestCase {
  
  /**
   * The XmlEncoder instance.
   *
   * @var \Drupal\serialization\Encoder\XmlEncoder
   */
  protected $encoder;
  
  /**
   * @var \Symfony\Component\Serializer\Encoder\XmlEncoder|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $baseEncoder;
  
  /**
   * An array of test data.
   *
   * @var array
   */
  protected $testArray = [
    'test' => 'test',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->baseEncoder = $this->createMock(BaseXmlEncoder::class);
    $this->encoder = new XmlEncoder();
    $this->encoder
      ->setBaseEncoder($this->baseEncoder);
  }
  
  /**
   * Tests the supportsEncoding() method.
   */
  public function testSupportsEncoding() : void {
    $this->assertTrue($this->encoder
      ->supportsEncoding('xml'));
    $this->assertFalse($this->encoder
      ->supportsEncoding('json'));
  }
  
  /**
   * Tests the supportsDecoding() method.
   */
  public function testSupportsDecoding() : void {
    $this->assertTrue($this->encoder
      ->supportsDecoding('xml'));
    $this->assertFalse($this->encoder
      ->supportsDecoding('json'));
  }
  
  /**
   * Tests the encode() method.
   */
  public function testEncode() : void {
    $this->baseEncoder
      ->expects($this->once())
      ->method('encode')
      ->with($this->testArray, 'test', [])
      ->willReturn('test');
    $this->assertEquals('test', $this->encoder
      ->encode($this->testArray, 'test'));
  }
  
  /**
   * Tests the decode() method.
   */
  public function testDecode() : void {
    $this->baseEncoder
      ->expects($this->once())
      ->method('decode')
      ->with('test', 'test', [])
      ->willReturn($this->testArray);
    $this->assertEquals($this->testArray, $this->encoder
      ->decode('test', 'test'));
  }
  
  /**
   * @covers ::getBaseEncoder
   */
  public function testDefaultEncoderHasSerializer() : void {
    // The serializer should be set on the Drupal encoder, which should then
    // set it on our default encoder.
    $encoder = new XmlEncoder();
    $serializer = new Serializer([
      new GetSetMethodNormalizer(),
    ]);
    $encoder->setSerializer($serializer);
    $base_encoder = $encoder->getBaseEncoder();
    $this->assertInstanceOf(BaseXmlEncoder::class, $base_encoder);
    // Test the encoder.
    $base_encoder->encode([
      'a' => new TestObject(),
    ], 'xml');
  }

}