TraceableSerializer example

$serializer
            ->expects($this->once())
            ->method('encode')
            ->with('data', 'format', $this->isType('array'))
            ->willReturn('encoded');
        $serializer
            ->expects($this->once())
            ->method('decode')
            ->with('data', 'format', $this->isType('array'))
            ->willReturn('decoded');

        $traceableSerializer = new TraceableSerializer($serializer, new SerializerDataCollector());

        $this->assertSame('serialized', $traceableSerializer->serialize('data', 'format'));
        $this->assertSame('deserialized', $traceableSerializer->deserialize('data', 'type', 'format'));
        $this->assertSame('normalized', $traceableSerializer->normalize('data', 'format'));
        $this->assertSame('denormalized', $traceableSerializer->denormalize('data', 'type', 'format'));
        $this->assertSame('encoded', $traceableSerializer->encode('data', 'format'));
        $this->assertSame('decoded', $traceableSerializer->decode('data', 'format'));
    }

    public function testCollectData()
    {