<?php

namespace FG\Test\ASN1\Universal;

use FG\ASN1\Identifier;
use FG\ASN1\Universal\NullObject;
use FG\Test\ASN1TestCase;

class NullObjectTest extends ASN1TestCase
{
    public function testGetIdentifier()
    {
        $object = NullObject::create();
        $this->assertEquals(Identifier::NULL, $object->getIdentifier()->getTagNumber());
    }

    public function testGetStringValue()
    {
        $object = NullObject::create();
        $this->assertEquals('null', (string) $object);
    }

    public function testGetObjectLength()
    {
        $object = NullObject::create();
        $this->assertEquals(2, $object->getObjectLength());
    }

    public function testGetBinary()
    {
        $object = NullObject::create();
        $expectedType = chr(Identifier::NULL);
        $expectedLength = chr(0x00);
        $this->assertEquals($expectedType.$expectedLength, $object->getBinary());
    }

    /**
     * @depends testGetBinary
     */
    public function testFromBinary()
    {
        $originalObject = NullObject::create();
        $binaryData = $originalObject->getBinary();
        $parsedObject = NullObject::fromBinary($binaryData);
        $this->assertEquals($originalObject, $parsedObject);
    }

    /**
     * @depends testFromBinary
     */
    public function testFromBinaryWithOffset()
    {
        $originalObject1 = NullObject::create();
        $originalObject2 = NullObject::create();

        $binaryData  = $originalObject1->getBinary();
        $binaryData .= $originalObject2->getBinary();

        $offset = 0;
        $parsedObject = NullObject::fromBinary($binaryData, $offset);
        $this->assertEquals($originalObject1, $parsedObject);
        $this->assertEquals(2, $offset);
        $parsedObject = NullObject::fromBinary($binaryData, $offset);
        $this->assertEquals($originalObject2, $parsedObject);
        $this->assertEquals(4, $offset);
    }

    /**
     * @expectedException \FG\ASN1\Exception\ParserException
     * @expectedExceptionMessage ASN.1 Parser Exception at offset 3: An ASN.1 Null should not have a length other than zero. Extracted length was 1
     * @depends testFromBinary
     */
    public function testFromBinaryWithInvalidLength01()
    {
        $binaryData  = chr(Identifier::NULL);
        $binaryData .= chr(0x01);
        NullObject::fromBinary($binaryData);
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MTg3MDQwMzI2NjAyODgyNyAzMDIzNjMzNjU4ODMxOTkzIDI2MTQ0ODA5MzYwMjczOTc=