stream: test convert filters seeking

Author: bukka

ext/standard/tests/filters/convert_filter_seek.phpt

@@ -0,0 +1,75 @@
+--TEST--
+convert filters (base64, quoted-printable) with seek to start only
+--FILE--
+<?php
+$file = __DIR__ . '/convert_filters_seek.txt';
+
+$text = 'Hello World! This is a test for convert filter seeking functionality.';
+
+echo "Testing convert.base64-encode/decode\n";
+$fp = fopen($file, 'w');
+stream_filter_append($fp, 'convert.base64-encode', STREAM_FILTER_WRITE);
+fwrite($fp, $text);
+fclose($fp);
+
+$fp = fopen($file, 'r');
+stream_filter_append($fp, 'convert.base64-decode', STREAM_FILTER_READ);
+
+$partial = fread($fp, 20);
+echo "First read (20 bytes): $partial\n";
+
+$result = fseek($fp, 0, SEEK_SET);
+echo "Seek to start: " . ($result === 0 ? "SUCCESS" : "FAILURE") . "\n";
+
+$full = fread($fp, strlen($text));
+echo "Content matches: " . ($full === $text ? "YES" : "NO") . "\n";
+
+$result = fseek($fp, 50, SEEK_SET);
+echo "Seek to middle: " . ($result === 0 ? "SUCCESS" : "FAILURE") . "\n";
+
+fclose($fp);
+
+echo "\nTesting convert.quoted-printable-encode/decode\n";
+$text2 = "Line1\r\nLine2\r\nLine3";
+$fp = fopen($file, 'w');
+stream_filter_append($fp, 'convert.quoted-printable-encode', STREAM_FILTER_WRITE);
+fwrite($fp, $text2);
+fclose($fp);
+
+$fp = fopen($file, 'r');
+stream_filter_append($fp, 'convert.quoted-printable-decode', STREAM_FILTER_READ);
+
+$partial = fread($fp, 10);
+echo "First read (10 bytes): " . bin2hex($partial) . "\n";
+
+$result = fseek($fp, 0, SEEK_SET);
+echo "Seek to start: " . ($result === 0 ? "SUCCESS" : "FAILURE") . "\n";
+
+$full = fread($fp, strlen($text2));
+echo "Content matches: " . ($full === $text2 ? "YES" : "NO") . "\n";
+
+$result = fseek($fp, 20, SEEK_SET);
+echo "Seek to middle: " . ($result === 0 ? "SUCCESS" : "FAILURE") . "\n";
+
+fclose($fp);
+?>
+--CLEAN--
+<?php
+@unlink(__DIR__ . '/convert_filters_seek.txt');
+?>
+--EXPECTF--
+Testing convert.base64-encode/decode
+First read (20 bytes): Hello World! This is
+Seek to start: SUCCESS
+Content matches: YES
+
+Warning: fseek(): Stream filter convert.* is not seekable in %s on line %d
+Seek to middle: FAILURE
+
+Testing convert.quoted-printable-encode/decode
+First read (10 bytes): 4c696e65310d0a4c696e
+Seek to start: SUCCESS
+Content matches: YES
+
+Warning: fseek(): Stream filter convert.* is not seekable in %s on line %d
+Seek to middle: FAILURE