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');
    }

}