<?php

class Swift_Encoder_Base64EncoderTest extends PHPUnit_Framework_TestCase
{
    private $_encoder;

    protected function setUp()
    {
        $this->_encoder = new Swift_Encoder_Base64Encoder();
    }

    public function testInputOutputRatioIs3to4Bytes()
    {
        /*
        RFC 2045, 6.8

         The encoding process represents 24-bit groups of input bits as output
         strings of 4 encoded characters.  Proceeding from left to right, a
         24-bit input group is formed by concatenating 3 8bit input groups.
         These 24 bits are then treated as 4 concatenated 6-bit groups, each
         of which is translated into a single digit in the base64 alphabet.
         */

        $this->assertEquals(
            'MTIz', $this->_encoder->encodeString('123'),
            '%s: 3 bytes of input should yield 4 bytes of output'
            );
        $this->assertEquals(
            'MTIzNDU2', $this->_encoder->encodeString('123456'),
            '%s: 6 bytes in input should yield 8 bytes of output'
            );
        $this->assertEquals(
            'MTIzNDU2Nzg5', $this->_encoder->encodeString('123456789'),
            '%s: 9 bytes in input should yield 12 bytes of output'
            );
    }

    public function testPadLength()
    {
        /*
        RFC 2045, 6.8

           Special processing is performed if fewer than 24 bits are available
           at the end of the data being encoded.  A full encoding quantum is
           always completed at the end of a body.  When fewer than 24 input bits
           are available in an input group, zero bits are added (on the right)
           to form an integral number of 6-bit groups.  Padding at the end of
           the data is performed using the "=" character.  Since all base64
           input is an integral number of octets, only the following cases can
           arise: (1) the final quantum of encoding input is an integral
           multiple of 24 bits; here, the final unit of encoded output will be
           an integral multiple of 4 characters with no "=" padding, (2) the
           final quantum of encoding input is exactly 8 bits; here, the final
           unit of encoded output will be two characters followed by two "="
           padding characters, or (3) the final quantum of encoding input is
           exactly 16 bits; here, the final unit of encoded output will be three
           characters followed by one "=" padding character.
           */

        for ($i = 0; $i < 30; ++$i) {
            $input = pack('C', rand(0, 255));
            $this->assertRegExp(
                '~^[a-zA-Z0-9/\+]{2}==$~', $this->_encoder->encodeString($input),
                '%s: A single byte should have 2 bytes of padding'
                );
        }

        for ($i = 0; $i < 30; ++$i) {
            $input = pack('C*', rand(0, 255), rand(0, 255));
            $this->assertRegExp(
                '~^[a-zA-Z0-9/\+]{3}=$~', $this->_encoder->encodeString($input),
                '%s: Two bytes should have 1 byte of padding'
                );
        }

        for ($i = 0; $i < 30; ++$i) {
            $input = pack('C*', rand(0, 255), rand(0, 255), rand(0, 255));
            $this->assertRegExp(
                '~^[a-zA-Z0-9/\+]{4}$~', $this->_encoder->encodeString($input),
                '%s: Three bytes should have no padding'
                );
        }
    }

    public function testMaximumLineLengthIs76Characters()
    {
        /*
         The encoded output stream must be represented in lines of no more
         than 76 characters each.  All line breaks or other characters not
         found in Table 1 must be ignored by decoding software.
         */

        $input =
        'abcdefghijklmnopqrstuvwxyz'.
        'ABCDEFGHIJKLMNOPQRSTUVWXYZ'.
        '1234567890'.
        'abcdefghijklmnopqrstuvwxyz'.
        'ABCDEFGHIJKLMNOPQRSTUVWXYZ'.
        '1234567890'.
        'ABCDEFGHIJKLMNOPQRSTUVWXYZ';

        $output =
        'YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXpBQk'.//38
        "NERUZHSElKS0xNTk9QUVJTVFVWV1hZWjEyMzQ1"."\r\n".//76 *
        "Njc4OTBhYmNkZWZnaGlqa2xtbm9wcXJzdHV2d3".//38
        "h5ekFCQ0RFRkdISUpLTE1OT1BRUlNUVVZXWFla"."\r\n".//76 *
        "MTIzNDU2Nzg5MEFCQ0RFRkdISUpLTE1OT1BRUl".//38
        "NUVVZXWFla";                                       //48

        $this->assertEquals(
            $output, $this->_encoder->encodeString($input),
            '%s: Lines should be no more than 76 characters'
            );
    }

    public function testMaximumLineLengthCanBeSpecified()
    {
        $input =
        'abcdefghijklmnopqrstuvwxyz'.
        'ABCDEFGHIJKLMNOPQRSTUVWXYZ'.
        '1234567890'.
        'abcdefghijklmnopqrstuvwxyz'.
        'ABCDEFGHIJKLMNOPQRSTUVWXYZ'.
        '1234567890'.
        'ABCDEFGHIJKLMNOPQRSTUVWXYZ';

        $output =
        'YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXpBQk'.//38
        "NERUZHSElKS0"."\r\n".//50 *
        "xNTk9QUVJTVFVWV1hZWjEyMzQ1Njc4OTBhYmNk".//38
        "ZWZnaGlqa2xt"."\r\n".//50 *
        "bm9wcXJzdHV2d3h5ekFCQ0RFRkdISUpLTE1OT1".//38
        "BRUlNUVVZXWF"."\r\n".//50 *
        "laMTIzNDU2Nzg5MEFCQ0RFRkdISUpLTE1OT1BR".//38
        "UlNUVVZXWFla";                                     //50 *

        $this->assertEquals(
            $output, $this->_encoder->encodeString($input, 0, 50),
            '%s: Lines should be no more than 100 characters'
            );
    }

    public function testFirstLineLengthCanBeDifferent()
    {
        $input =
        'abcdefghijklmnopqrstuvwxyz'.
        'ABCDEFGHIJKLMNOPQRSTUVWXYZ'.
        '1234567890'.
        'abcdefghijklmnopqrstuvwxyz'.
        'ABCDEFGHIJKLMNOPQRSTUVWXYZ'.
        '1234567890'.
        'ABCDEFGHIJKLMNOPQRSTUVWXYZ';

        $output =
        'YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXpBQk'.//38
        "NERUZHSElKS0xNTk9QU"."\r\n".//57 *
        "VJTVFVWV1hZWjEyMzQ1Njc4OTBhYmNkZWZnaGl".//38
        "qa2xtbm9wcXJzdHV2d3h5ekFCQ0RFRkdISUpLT"."\r\n".//76 *
        "E1OT1BRUlNUVVZXWFlaMTIzNDU2Nzg5MEFCQ0R".//38
        "FRkdISUpLTE1OT1BRUlNUVVZXWFla";                    //67

        $this->assertEquals(
            $output, $this->_encoder->encodeString($input, 19),
            '%s: First line offset is 19 so first line should be 57 chars long'
            );
    }
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NjI1Mzc5NzAwOTc4MjYwMyA0OTc2MDk4OTcwMDEyOTk0IDg2OTU3OTMyMzUzNzkyNzQ=